Consulta: subjectFacets:"Yield"
Registros recuperados: 413
Data/hora: 02/06/2024 04:31:43

Fontes e doses de potássio sobre os componentes da produção na cultura da soja e do sorgo
Provedor de dados: 196
Autores: de Oliveira, Lucas Robson; Fonseca Filho, Marcos Cesar; Montes, Rafael Marangoni; Benett, Katiane Santiago Silva; Benett, Cleiton Gredson Sabin.
Para uma boa produtividade agrícola é fundamental que o solo possua a fertilidade adequada, para disponibilizar os nutrientes exigidos pelas culturas. O objetivo do trabalho foi avaliar o efeito das diferentes fontes e doses de potássio sobre os componentes da produção e produtividades na cultura da soja e na safrinha com a cultura do sorgo. O experimento foi instalado na safra 2018/2019 no campo experimental da Universidade Estadual de Goiás, Unidade Universitária de Ipameri, Campus Sul, no município de Ipameri-GO. O delineamento experimental utilizado foi o de blocos casualizados, arranjados em esquema fatorial 2 x 6, sendo duas fontes de potássio (cloreto de potássio e fonolito) e seis doses de potássio (0; 60; 120; 180; 240 e 300 kg ha-1), com quatro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Phonolite; KCl; Yield; Adubação; Fonolito; KCl; Produtividade.
Ano: 2022
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/7016

BIOLOGICAL EFFECTIVENESS OF ONION PLANT PROTECTION SCHEME
Provedor de dados: 196
Autores: Bondarenko, Anastasia; Tyutyuma, Natalya.
The average yield of bulb onions is still quite low. The purpose of this study was to improve the techniques and methods of cultivating onions using new generation preparations against the background of N180P60K60 in a drip irrigation method. To achieve the objective of this study, field surveys, observations and measurements were carried out using generally accepted methods. The experimental data obtained from the studies were processed using analysis of variance in Excel, which is part of the Microsoft Office installation package. Field experience included both background application of mineral fertilizers, as well as integrated nutrition of plants with Aminofol Plus and Novosil bulb onion growth stimulants and its biological protection with drugs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bulb onions; Processing; Herbicide; Trips; Weeds; Yield; Bulbo de cebolas; Processamento; Herbicida; Viagens; Ervas daninhas.
Ano: 2022
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6930

Inoculación con Paenibacillus polymyxa y fertilización nitrogenada en maíz bajo condiciones de temporal.
Provedor de dados: 32
Autores: Benítez Noyola, Mariela.
En México el maíz es el cultivo más importante por la diversidad de usos que presenta, es la base de la alimentación humana, animal y materia prima para la industria; sin embargo, es un cultivo que demanda niveles altos de nitrógeno que no siempre se cubren por el costo que implica el uso de fertilizante. Una alternativa de bajo costo es el uso de inoculantes a base de bacterias promotoras del crecimiento vegetal (BPCV) que pueden combinarse con la fertilización. El objetivo de esta investigación fue evaluar la respuesta de maíz a la inoculación con la cepa de Paenibacillus polymyxa BSP1.1 en combinación con diferentes niveles de fertilización nitrogenada en condiciones de temporal. El experimento se estableció en un diseño experimental de parcelas...
Palavras-chave: Nitrógeno; Fertilización; Inoculación; Bacterias promotoras del crecimiento vegetal; Maíz; Rendimiento; Nitrogen; Fertilization; Inoculation; Plant growth promoting rhizobacteria; Corn; Yield; Edafología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/1865

Respuesta de Physalis peruviana L. con diferente origen: rebrote y semilla a diferentes formas de nitrógeno.
Provedor de dados: 32
Autores: Antúnez Ocampo, Oscar Martín.
Con el objetivo de evaluar la respuesta morfológica, rendimiento y calidad de fruto de Physalis peruviana L., derivadas de semilla y rebrote a la aplicación simultánea de NO3-y NH4+ se llevó a cabo un estudio en invernadero del Colegio de Postgraduados, Campus Montecillo, estado de México. Se utilizaron plantas propagadas por rebrote de plantas de 2 años de edad y por otra parte se utilizaron plantas nuevas obtenidas de semilla. Los tratamientos consistieron de 3 relaciones NO3-/NH4+ (%): 100:0, 75:25 y 50:50, las cuales se distribuyeron en un diseño experimental completamente al azar. Las plantas de rebrote se clasificaron por vigor: alto, medio y bajo. La unidad experimental consistió en una planta colocada en una bolsa negra de polietileno de 19 L con...
Palavras-chave: Vigor; Relación nitrato/amonio; Amonio; Rendimiento; Calidad; Relation nitrate/ammonium; Ammonium; Yield; Quality; Edafología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2151

Rendimiento de grano y contenido de antocianinas en poblaciones de maíz de la región de Huaquechula, Puebla
Provedor de dados: 32
Autores: Flores Partida, Víctor.
Con el propósito de seleccionar poblaciones locales de maíz con potencial para la producción de grano y la extracción de antocianinas, se colectaron 94 materiales genéticos en los municipios de Huaquechula, Atzizihuacán y Tlapanalá del estado de Puebla, pertenecientes geográficamente a la región de Huaquechula. Estas poblaciones y seis variedades testigo se evaluaron en 2007 en temporal, en las localidades de Huaquechula, Tlapanalá y Teacalco, utilizando el diseño Látice Triple 10x10. Los testigos correspondieron a tres materiales liberados por el Colegio de Postgraduados (CPV-M 301, Precoz Huejotzingo y Chiautla blanco), una población local de San Juan Tetla, una población de Izúcar de Matamoros y el híbrido comercial AS-910 desarrollado por la compañía...
Palavras-chave: Zea mays L.; Poblaciones nativas; Rendimiento; Antocianinas; Maize populations; Yield; Anthocianyns; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional.
Ano: 2011
URL: http://hdl.handle.net/10521/465

Interacciones causales del necrosamiento de yemas florales en zarzamora 'Tupy'.
Provedor de dados: 32
Autores: Argote Hernández, Cajeme Nicolás.
Actualmente en México la principal frutilla que se exporta en fresco es la zarzamora ‘Tupy’ (Rubus spp.). El Estado de Michoacán produce más de 90% del total a nivel nacional. Uno de los problemas de producción es el  necrosamiento de las yemas florales. No existen reportes documentados sobre el necrosamiento de las yemas en zarzamora. Se diseñó un experimento con zarzamora ´Tupy´ en Los Reyes, Michoacán  para diagnosticar las posibles interacciones causales del necrosamiento de yemas. Se probaron cinco  fechas de forzado (defoliación), tres tratamientos de dosis y formas variables de aplicación de thidiazurón (TDZ) y ácido giberélico (AG3) en pre y post defoliación y dos dosis de aplicación edáfica de nitrógeno (350 a 500 unidades/ha.). La primera fecha...
Palavras-chave: Rubus; Frutillas; Reguladores de crecimiento; Rendimiento; Fruticultura; Maestría; Small fruits; Growth regulators; Yield.
Ano: 2012
URL: http://hdl.handle.net/10521/1788

Comportamiento fisiológico, rendimiento y calidad de fruto de fresa cultivada en el modelo de producción intensivo "raíces 150"
Provedor de dados: 32
Autores: Flores Martínez, Edis Alberto.
En esta investigación se evaluó la tasa de fijación de CO2, el rendimiento y la calidad de  fruto de fresa cv. Aromas en el modelo de producción intensivo “Raíces-150”. Este modelo  tiene las siguientes características: Dos brazos de metal unidos basalmente los cuales  forman un ángulo de 30° entre ellos, con una altura de 1.92 m. Cada brazo soporta 10  canaletas de 3 m de longitud, 0.1 m de profundidad y 0.11 m de ancho; la distancia entre  las canaletas con la misma orientación es 0.4 m en el plano vertical. Se transplantaron 10  plantas de fresa por canaleta el 23 de febrero 2006 en un sustrato compuesto de una  mezcla de turba  y agrolita en partes iguales. Se midieron la temperatura de la hoja,  temperatura del aire, tasa de fotosíntesis neta y total,...
Tipo: Tesis
Palavras-chave: Fresa (Fragaria x ananassa); Modelo de producción intensivo; Absorción de CO2; Rendimiento.; Maestría; Fisiología Vegetal; (Fragaria x ananassa); Intensive production system; CO2 uptake rate; Yield; Fruit quaility.
Ano: 2008
URL: http://hdl.handle.net/10521/1344

Fosfitos en la producción de fresa.
Provedor de dados: 32
Autores: Estrada Ortiz, Elías.
El efecto de fosfitos en plantas depende fuertemente del estado nutrimental de fósforo en el organismo vivo, ya que plantas deficientes en fósforo son vulnerables a aplicaciones de fosfitos (H2PO3-). La presente investigación se realizó con el objetivo de determinar el efecto del suministro de distintos porcentajes de H2PO3- en la solución nutritiva, sobre el crecimiento, rendimiento y calidad de fruto en fresa. El experimento se realizó en un invernadero tipo túnel del Colegio de Postgraduados, en Montecillo, México, utilizando riego por goteo y tezontle como sustrato, en un diseño experimental en bloques al azar generalizado. Se modificó la solución nutritiva Steiner para utilizarla, en una primera fase al 50%, y al comenzar la fructificación se aumentó...
Palavras-chave: Fragaria x ananassa; Fosfitos; Rendimiento; Calidad de fruto; Antocianinas; Phosphites; Yield; Fruit quality; Anthocyanins; Maestría; Edafología.
Ano: 2010
URL: http://hdl.handle.net/10521/165

Fertilización N-P-K en plantaciones de palma de aceite (Elaeis guineesis Jacq.) en el norte de Chiapas
Provedor de dados: 32
Autores: Córdova Sánchez, Alberto.
Debido a que existe un conocimiento limitado sobre las necesidades nutricionales del  cultivo de la palma de aceite en el norte de Chiapas, se realizó el presente estudio con el  objetivo de evaluar diferentes tratamientos de fertilización NPK en plantaciones  comerciales de palma de aceite, a través del rendimiento y la concentración foliar de NPK.  Para ello, se establecieron dos parcelas experimentales en el municipio de Palenque,  Chiapas en plantaciones del híbrido Deli x Avros, de 8 años de edad. Mediante el Modelo  San Cristóbal se generaron 12 tratamientos que cubren un rango amplio de fertilización;  estos se evaluaron bajo un diseño de bloques completos al azar. Los niveles de N  probados fueron: 60, 90, 120 y 150 kg ha-1; de P2O5: fueron 30, 60,...
Tipo: Tesis
Palavras-chave: Nutrición; Concentración foliar; Rendimiento; Clasificación de suelos.; Maestría; Producción Agroalimentaria en el Trópico; Nutrition; Foliar concentration; Yield; Soil classification.
Ano: 2009
URL: http://hdl.handle.net/10521/1434

Sistemas de producción de fresa de altas densidades.
Provedor de dados: 32
Autores: Ramírez Gómez, Humberto.
En México se produce fresa con alta tecnología pero existe escasa investigación sobre la productividad de la fresa en sistemas hidropónicos con altas densidades. El presente estudio se realizó con la finalidad de evaluar la fisiología, rendimiento, calidad y rentabilidad de la fresa de altas densidades en cuatro sistemas hidropónicos. Los tratamientos estudiados fueron: bolsas individuales (BI), vertical con tres tubos (V3T), vertical con cuatro tubos (V4T) y vertical con macetas hidropónicas (VMH) de 42, 90, 120 y 180 plantas por módulo respectivamente. El experimento se llevó a cabo en un invernadero tipo túnel en el Colegio de Postgraduados, en Montecillo Estado de México. Para conducir el estudio los tratamientos se alojaron en un diseño experimental...
Palavras-chave: Fragaria x ananassa Duch; Sistemas hidropónicos; Variables fisiológicas; Rendimiento; Calidad; Rentabilidad; Hydroponic systems; Physiological variables; Yield; Quality; Profitability; Maestría; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/506

Adaptación a clima templado de poblaciones exóticas de maíz mediante selección masal visual.
Provedor de dados: 32
Autores: Gómez Espejo, Ana Luisa.
Independientemente de la eficiencia teórica de los métodos de mejoramiento, es la cantidad de variabilidad genética en las poblaciones la que determina el progreso genético obtenido por ciclo de selección; por ello, es de particular interés para todo programa de mejoramiento genético de maíz (Zea mays L.) incrementar la variabilidad genética de su germoplasma base, siendo para ello una vía la adaptación y uso de germoplasma exótico tropical o subtropical en las regiones de clima templado. En este trabajo se consideró la expresión del rendimiento de grano como indicador de la adaptación a clima templado, proponiéndose además que los genes de adaptación son dominantes sobre los de inadaptación. Así, durante los ciclos P-V 2011 y 2012, se evaluaron 48...
Palavras-chave: Zea mays L.; Adaptación; Selección masal; Rendimiento; Heterosis; Cruzas; Razas exóticas tropicales; Razas de clima templado; Adaptation; Crosses; Yield; Mass selection; Tropical exotic races; Temperate climate races; Genética; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2269

Rendimiento de grano y contenido de antocianinas en poblaciones de maíz de la región de Huaquechula, Puebla
Provedor de dados: 32
Autores: Flores Partida, Víctor.
Con el propósito de seleccionar poblaciones locales de maíz con potencial para la producción de grano y la extracción de antocianinas, se colectaron 94 materiales genéticos en los municipios de Huaquechula, Atzizihuacán y Tlapanalá del estado de Puebla, pertenecientes geográficamente a la región de Huaquechula. Estas poblaciones y seis variedades testigo se evaluaron en 2007 en temporal, en las localidades de Huaquechula, Tlapanalá y Teacalco, utilizando el diseño Látice Triple 10x10. Los testigos correspondieron a tres materiales liberados por el Colegio de Postgraduados (CPV-M 301, Precoz Huejotzingo y Chiautla blanco), una población local de San Juan Tetla, una población de Izúcar de Matamoros y el híbrido comercial AS-910 desarrollado por la compañía...
Palavras-chave: Zea mays L.; Poblaciones nativas; Rendimiento; Antocianinas; Maize populations; Yield; Anthocianyns; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional.
Ano: 2011
URL: http://hdl.handle.net/10521/465

Efecto de la resistencia y altura de planta del trigo en la incidencia de  Septoria tritici y su expresión en el rendimiento
Provedor de dados: 32
Autores: Rodríguez Contreras, Marías Elsa.
Se evaluaron variedades con diferente nivel de resistencia a Septoria tritici en  parcelas con control y sin control de la enfermedad en las localidades de  Juchitepec, Edo. de México y Nanacamilpa, Tlaxcala. Se observó que los daños  en el rendimiento de trigo que causa el tizón foliar pueden llegar a ser hasta del  50% en variedades susceptibles. Se determinaron tres grupos de variedades  con base a su susceptibilidad: resistentes (Rebeca F2000) moderadamente  resistentes (Triunfo F2004) y susceptibles (Gálvez M87, Salamanca S75 y  Verano S91). De seis líneas altas y seis bajas evaluadas en parcelas con y sin  competencia (separación entre hileras de plantas), el tizón foliar afectó más a las  líneas bajas que a las altas. Parcelas con competencia...
Tipo: Tesis
Palavras-chave: Tizón foliar; Pérdidas; Rendimiento; Variedades susceptibles; Líneas altas; Líneas bajas; Rebeca F2000 Leaf blotch; Yield; Losses; Susceptible varieties; Tall lines; Short lines; Rebeca F2000.
Ano: 2012
URL: http://hdl.handle.net/10521/1030

Estudio del desarrollo radical del cultivo del trigo (Triticum aestivum L. var. Triunfo F2004) aplicando ácido salicílico vía foliar.
Provedor de dados: 32
Autores: Hernández López, Juan Carlos.
El trigo es un cultivo importante en la vida económica y social de México, ya que es parte importante de la dieta alimenticia de su población. El avance de la tecnología agrícola trata de satisfacer la demanda alimentaria, en el caso del trigo se busca incrementar su producción junto con otros productos agrícolas. También es importante realizar estudios fisiológicos que permitan incrementar la producción en el trigo. Dichos estudios indican; que las plantas producen diversas sustancias que regulan su crecimiento y desarrollo, estas sustancias se llaman hormonas vegetales o reguladores de crecimiento. Dentro de estos reguladores se encuentra el Ácido Salicílico. Se tienen evidencias científicas que la aplicación de Ácido Salicílico (AS) en las plantas,...
Palavras-chave: Acido salicílico; Biomasa radical; Productividad; Rendimiento; Triticum aestivum; Productivity; Root biomass; Salicylic acid; Yield; Hidrociencias; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/1090

Tolerancia a salinidad de tomate injertado
Provedor de dados: 32
Autores: Orosco Alcalá, Blanca Estela.
La presente investigación se llevó a cabo en la empresa Vegetales de  Teotihuacan S. A de C. V. ubicada en Teotihuacan, de agosto a diciembre de  2007. Se estudió el efecto de los injertos de tomate Maxifort (MX), Multifort (MF),  Beaufort (BF) y de cuatro concentraciones de NaCl (0, 50, 100 y 150 mM)  suministradas en la solución nutritiva Steiner sobre la altura de planta, diámetro  de tallo, fotosíntesis, rendimiento, peso fresco y seco, calidad de fruta,  concentración nutrimental y contenido de prolina en hojas. Se utilizó el híbrido  Caimán sobre los portainjertos y éste mismo se usó como control (NI). Los  resultados indican una disminución de altura de planta, diámetro de tallo,  fotosíntesis y rendimiento, al aumentar el NaCl en la solución...
Tipo: Tesis
Palavras-chave: Lycopersicon esculentum Mill.; Portainjertos; Prolina; Fotosíntesis; Rendimiento; Maestría; Edafología; Rootstocks; Proline; Photosynthesis; Yield.
Ano: 2008
URL: http://hdl.handle.net/10521/1320

Desarrollo de fruto y calidad de semilla de cinco variedades de Physalis ixocarpa Brot. en el Valle del Fuerte, Sinaloa
Provedor de dados: 32
Autores: Rodríguez Burgos, Alejo.
El tomate de cáscara se explota en Sinaloa (México) desde hace 20 años y su importancia se incrementó en la última década. Existe muy poca información sistematizada del manejo y potencial productivo de diferentes variedades. Aquí se estudió el desarrollo de fruto y semilla, y la calidad de esta, en cinco variedades (Querétaro, Rendidora, Mahone, Orizaba, Carriceño) sembradas en dos fechas (FS1: 6 de septiembre y FS2: 16 de octubre de 2008). Las variedades Querétaro y Mahone tuvieron en promedio un fruto más largo (37 y 34 cm), ancho (43 y 40 cm) y pesado (38 y 34 g, respectivamente), lo que llevó a que Querétaro tuviera el rendimiento de fruto (RendF) más alto (53 t ha-1). El mejor desarrollo de cultivo se observó en FS1, debido a que en FS2 se presentó un...
Palavras-chave: Fechas de siembra; Calidad de semilla; Rendimiento; Crecimiento; Physalis ixocarpa Brot; Seeding date; Seed quality; Yield; Growth; Maestría; Producción de semillas.
Ano: 2010
URL: http://hdl.handle.net/10521/123

Acidos húmicos y fúlvicos en la producción hidropónica de Chile Manzano (Capsicum pubescens R y P) en invernadero.
Provedor de dados: 32
Autores: Hernández Hernández, Antelma.
Para determinar el efecto de substancias húmicas (SH) en el crecimiento del chile manzano (Capsicum pubescens R y P), en invernadero, se evaluaron tres niveles de presión osmótica de solución nutritiva Steiner (0.54, 0.72 y 0.90 atm) y tres concentraciones de aplicación foliar de substancias húmicas (0.5, 1, 1.5 ml.L-1 de agua de las SH). Las variables medidas fueron: diámetro ecuatorial (DE), diámetro polar (DP), volumen (VOL), grosor de pericarpio (GP), numero de frutos comerciales (NFRC), numero de frutos pequeños (NFRP), número total de frutos (NTOT), rendimiento (RTO), peso seco de fruto (PSFR), firmeza (FIR), sólidos solubles totales (OBRIX), capsaicina (CAPS) y macro y micronutrientes (N, P, K, Ca, Mg y Fe. Al aplicar la solución nutritiva con...
Palavras-chave: Substancias húmicas; Solución nutritiva; Capsicum pubescens; Rendimiento; Humic substances; Nutrient solution; Yield; Maestría; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/381

Efecto del secado parcial de la raíz en el crecimiento, intercambio de gases y rendimiento del tomate (Lycopersicon esculentum Mill.)
Provedor de dados: 32
Autores: Campos García, Huitziméngari.
Se estudió el efecto de tres niveles de secado parcial de la raíz (SPR) en comparación con riego convencional, en términos de intercambio de gases, relaciones hídricas, crecimiento, ajuste osmótico, rendimiento, calidad del fruto, estado nutrimental y eficiencia en el uso del agua en tomate (Lycopersicon esculentum Mill.). Se aplicaron cuatro tratamientos: Testigo, en el que la humedad aprovechable residual (HAR) en el sistema radical completo se permitió llegara hasta un 90 %; SPR90-30, en donde en un lado de la raíz dividida la HAR se permitió llegara al 90 % y el otro al 30 %; PRD70-30, en donde en un lado de la raíz dividida la HAR llegó al 70 % y el otro al 30 %; y PRD50-30 en donde en un lado de la raíz dividida la HAR llegó al 50 % y el otro al 30...
Tipo: Tesis
Palavras-chave: Secado parcial de la raíz; Intercambio de gases; Eficiencia en el uso del agua.; Rendimiento.; Calidad del fruto.; Tomate; Maestría; Fisiología Vegetal; Partial rootzone drying; Gas exchange.; Water use efficiency; Yield; Fruit quality; Tomato.
Ano: 2007
URL: http://hdl.handle.net/10521/1596

Impacto del cambio climático en los distritos de riego en Sinaloa.
Provedor de dados: 32
Autores: Flores Gallardo, Hilario.
El desarrollo de los cultivos depende principalmente de las condiciones ambientales que se presentan durante el ciclo fenológico de los cultivos y de las prácticas de manejo que se utilicen. Debido a lo anterior, la agricultura es el sector productivo más susceptible a la variabilidad climática y por lo tanto, al cambio climático. El cambio climático es atribuido a las actividades antropogénicas y durante los últimos años ha sido aceptado como un fenómeno real que representa una gran amenaza para la producción de alimentos. En el presente estudio se utilizó el modelo AquaCrop para simular el desarrollo y el rendimiento del cultivo de maíz (Zea mays L.) bajo condiciones climáticas actuales y bajo los escenarios de cambio climático A1B y A2. El modelo...
Palavras-chave: Adaptación; Rendimiento; Modelación de cultivos; Variabilidad climática; Adaptation; Climatic variability; Crop model; Yield; Maestría; Hidrociencias.
Ano: 2010
URL: http://hdl.handle.net/10521/334

Dinámica de crecimiento y rendimiento de forraje de diez variedades de alfalfa.
Provedor de dados: 32
Autores: Rojas García, Adelaido Rafael.
El objetivo del presente estudio fue evaluar la respuesta productiva de 10 variedades de alfalfa con intervalos de corte definidos estacionalmente. El estudio se realizó de junio de 2010 a junio de 2011 en el Colegio de Postgraduados. Las variedades evaluadas fueron: Aragón, Valenciana, Chipilo, Milenia, Oaxaca, San Miguelito, Júpiter, Atlixco, Vía láctea y Cuf 101, las cuales se distribuyeron en un diseño completamente al azar con cuatro repeticiones. Las variedades Júpiter y Milenia con 20,275 y 20,644 kg MS ha-1 registraron los mayores rendimientos y el menor para las variedades Cuf 101 y Aragón con 13,350 y 14,488 kg MS ha-1, respectivamente. Las variedades con mayor tasa de crecimiento promedio anual fueron Milenia y Júpiter con 57 y 56 kg MS ha-1d-1,...
Palavras-chave: Medicago sativa; Rendimiento; Radiación; Indice de área foliar; Yield; Radiation; Foliar area index; Ganadería; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/514

Respuestas agronómicas y fisiológicas de pepino a diferentes concentraciones de cloruro de sodio
Provedor de dados: 32
Autores: García Morales, Soledad.
La salinidad del suelo es una de las principales limitantes en la producción de  alimentos debido a que afecta negativamente muchos aspectos del metabolismo y  rendimiento de las plantas cultivadas. La respuesta de las plantas a la salinidad  consiste en numerosos procesos que funcionan coordinadamente para aliviar tanto el  estrés osmótico como la toxicidad y el desbalance nutrimental.   La presente investigación fue conducida bajo condiciones de invernadero durante el  período Otoño del 2006 en el Colegio de Postgraduados, Campus Montecillo. Se  evaluó el efecto de cinco concentraciones de cloruro de sodio (0, 47, 97, 150 y 205  mM de NaCl) suministradas en la solución nutritiva Steiner al 100 % empleada para  el riego, para analizar sus efectos en...
Tipo: Tesis
Palavras-chave: Salinidad; Crecimiento; Rendimiento; Calidad de frutos; Fisiología de plantas; Nutrición de plantas; Maestría; Edafología; Salinity; Growth; Yield; Fruit quality; Plant physiology; Plant nutrition.
Ano: 2007
URL: http://hdl.handle.net/10521/1315

Suspensión del riego en caña de azúcar durante la maduración: efecto en el rendimiento y calidad del jugo.
Provedor de dados: 32
Autores: Méndez Adorno, Jesús Manuel.
Para incrementar la concentración de azúcares previo a la cosecha en el área de abastecimiento del Ingenio Pujiltic, se establecieron cinco parcelas experimentales sembradas con las variedades, Mex57-473 y Mex69-290, en suelos Vertisol éutrico y Gleysol mólico, respectivamente en donde se evaluó la suspensión del riego a 75, 60, 45, 30, 15 días antes de la cosecha. Durante el desarrollo del experimento se tomaron datos, cada quince días, de grados Brix en la parte media del tallo y contenido de humedad de suelo de 0-30cm de profundidad. El volumen de agua de riego aplicada se midió con un vertedor triangular y los requerimientos hídricos del cultivo se estimaron por el método de Blaney y Criddle con datos de las estaciones meteorológicas automatizadas del...
Palavras-chave: Riego; Caña de azúcar; Sacarosa; Grados Brix; Rendimiento; Maduración; Producción Agroalimentaria en el Trópico; Maestría; Irrigation; Cane sugar; Sucrose; Brix; Yield; Maturity.
Ano: 2012
URL: http://hdl.handle.net/10521/1776

Requerimiento de nitrógeno en la producción de Stevia rebaudiana Bertoni en hidroponía e invernadero.
Provedor de dados: 32
Autores: Salgado Cordero, Luz Eréndira.
La Stevia rebaudiana, también llamada hierba dulce o Ka’a-He’e, es una herbácea semiperenne de la flora paraguaya perteneciente a la familia Asteraceae. La estevia es empleada por la industria alimentaria y farmacéutica debido a compuestos glucósidos que se obtienen a partir de la hoja, los cuales tienen un poder edulcorante hasta 250 a 300 veces mayor a la de la sacarosa. La presente investigación se realizó con el objetivo de evaluar el efecto de diferentes niveles de nitrato sobre la producción de biomasa, la concentración foliar y requerimiento de nitrógeno (N) en plantas de estevia en hidroponía. El experimento se realizó en un invernadero del Colegio de Postgraduados, en Texcoco, México, se utilizó riego por goteo y un sustrato con una mezcla 70:30...
Palavras-chave: Stevia; Requerimiento interno de nitrógeno; Rendimiento; Internal nitrogen requirement; Yield; Edafología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2133

Crecimiento, desarrollo, extracción nutrimental, rendimiento y calidad del jitomate de costilla (Solanum lycopersicum Mill.).
Provedor de dados: 32
Autores: Urrieta Velázquez, José Alberto.
El enfoque tradicional de la producción de jitomate (Solanum lycopersicum Mill.) fue el incremento del rendimiento a través del control de las condiciones ambientales y manejo agronómico, siendo el peso individual de los frutos y aspectos externos de los mismos los principales parámetros de calidad. En la actualidad, además de aspectos externos, los consumidores eligen los jitomates por su sabor, propiedades nutracéuticas e incluso por el manejo durante su crecimiento. Esto ha cambiado el rumbo del mejoramiento genético del jitomate, y se ha iniciado el uso de poblaciones silvestres y cultivadas para mejorar tales aspectos de calidad. En México, un alternativa potencial es jitomate de costilla (Solanum lycopersicum Mill.), que se cultiva localmente y tiene...
Palavras-chave: Jitomate de costilla; Solanum lycopersicum; Rendimiento; Calidad; Yield; Quality; Doctorado; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/474

Efecto del viroide de la mancha de sol en el rendimiento y calidad de frutos en aguacate de Michoacán.
Provedor de dados: 32
Autores: Saucedo Carabez, José Ramón.
Avocado sunblotch viroid (ASBVd) es una enfermedad considerada de importancia económica que se reportó en México en 2009. El objetivo del presente trabajo fue evaluar el efecto del ASBVd en el rendimiento y calidad de frutos en aguacate de Michoacán debido a la importancia de la enfermedad y del cultivo. Cuatro árboles sanos fueron comparados con cuatro asintomáticos y cuatro sintomáticos del cultivar ‘Hass’ y de la selección ‘Méndez’ en 2 huertos con diferente manejo. En campo se registró el rendimiento total de los árboles. En cada árbol se midió el peso, diámetro ecuatorial (DE), diámetro polar (DP) de 100 frutos y la incidencia de frutos con síntomas. Frutos ‘Hass’ de cinco condiciones: Frutos sanos de árboles sanos (C1), frutos sanos de árboles...
Palavras-chave: ASBVd; Efecto; Rendimiento; Calidad; Pérdida; Incidencia; Effect; Yield; Quality; Loss; Incidence; Fitopatología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/1977

Técnicas de riego por gravedad de alta eficiencia mediante modelación hídrica, con aplicación en Distritos de Riego.
Provedor de dados: 32
Autores: Talamantes Castorena, Ismael.
El estado de Sinaloa es el principal productor de maíz en México bajo riego, aportando el 65% de la producción nacional, sin embargo, la eficiencia de aplicación de riego se mantiene en 45% y escenarios frecuentes de baja disponibilidad hídrica, han puesto en riesgo la estabilidad económica y social del estado. Con el fin de generar alternativas tecnológicas de aplicación inmediata que contribuyan a mejorar la eficiencia en el uso del agua del maíz, en el presente estudio se evaluaron cinco técnicas parcelarias de riego por gravedad de alta eficiencia: 1) surcos alternos, 2) camas, 3) reducción de gasto, 4) riego intermitente y 5) riego deficitario, comparándolas con el sistema tradicional (testigo). El estudio se realizó en el distrito de riego 075 (norte...
Palavras-chave: Diseño; Riego de precisión; Productividad del agua; Rendimiento; Design; Irrigation technique; Water use efficiency; Yield; Hidrociencias; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2136

Caracterización agronómica y aptitud combinatoria de poblaciones de maíz del sureste del Estado de México.
Provedor de dados: 32
Autores: Arce Ramírez, Aurelio Chico.
El propósito de esta investigación fue contribuir a la detección de materiales genéticos adecuados de partida para el mejoramiento genético de maíz (Zea mays L) de grano blanco y blanco cremoso para el Sureste del Estado de México, así como definir el método de mejoramiento genético a seguir en las mismas. Para ello, se realizaron dos estudios; en el primero se evaluó el peso seco de grano por planta (PSG/PP), componentes del rendimiento, y características agronómicas de 110 materiales genéticos, mientras que en el segundo se estimaron los efectos de aptitud combinatoria general (gi) (ACG) y específica (sij)(ACE) del PSG/PP de 10 poblaciones sobresalientes y de sus 45 cruzas simples posibles, respectivamente, mediante el Método 2 de Griffing. En ambos...
Palavras-chave: Zea mays L.; Aptitud combinatoria; Cruzas dialélicas; Poblaciones nativas; Premejoramiento; Rendimiento; Combining ability; Diallel crosses; Native populations; Yield; Genética; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2038

Rendimiento y contenido de prolina en maíz mejorado por selección masal para resistencia a sequía.
Provedor de dados: 32
Autores: Acevedo Cortés, María de los Angeles.
El presente trabajo se realizó con el objetivo de estimar el avance genético promedio del rendimiento por ciclo de selección, de diferentes compuestos de selección masal visual estratificada (SMVE) practicada para resistencia a sequía en dos variedades de maíz (Zea mays L.), donde el rendimiento de grano fue el criterio de selección. También se tuvo como objetivos estimar el avance genético indirecto promedio del contenido de prolina (P) en las plantas de los diferentes ciclos de SMVE, y conocer si existe relación alguna entre el rendimiento y P, esto para poder determinar si el P en la planta puede recomendarse como un criterio de selección para resistencia a sequía en maíz. Para evaluar el rendimiento en campo, se usaron los siguientes materiales...
Palavras-chave: Zea mays; Selección masal visual estratificada (SMVE); Sequía; Rendimiento; Respuesta a la selección; Prolina; Drought; Proline; Response to selection; Stratified visual mass selection (SVMS); Yield; Genética; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/748

Productividad de grano y semilla de híbridos trilineales, cruzas simples adroestériles y fértiles de maíz.
Provedor de dados: 32
Autores: Canales Islas, Enrique Inoscencio.
En los programas de mejoramiento genético de maíz (Zea mays L.) y de generación de híbridos de la Facultad de Estudios Superiores Cuautitlán (FESC-UNAM) y del Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP-CEVAMEX), se emplean la esterilidad masculina y la incorporación de este carácter, en las líneas élites como una alternativa para facilitar la producción de semillas, favorecer el mantenimiento de la calidad genética, y disminuir costos de producción de semilla, al liberarse comercialmente para su uso extensivo y abastecimiento de semilla de nuevos híbridos. En estos programas, desde 1992, se trabaja con androesterilidad, contándose con híbridos trilíneales, para productores de maíz de los Valles Altos de México (2200 a...
Palavras-chave: Zea mays L.; Androesterilidad; Densidad de población; Producción de semillas; Híbridos de maíz; Proporciones de semilla; Parámetros de estabilidad; AMMI; Rendimiento; Male sterility; Plant density; Seed production; Maize hybrids; Seed ratios; Parameters of stability; Yield; Genética; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2312

Acidos húmicos y fúlvicos en la producción hidropónica de Chile Manzano (Capsicum pubescens R y P) en invernadero.
Provedor de dados: 32
Autores: Hernández Hernández, Antelma.
Para determinar el efecto de substancias húmicas (SH) en el crecimiento del chile manzano (Capsicum pubescens R y P), en invernadero, se evaluaron tres niveles de presión osmótica de solución nutritiva Steiner (0.54, 0.72 y 0.90 atm) y tres concentraciones de aplicación foliar de substancias húmicas (0.5, 1, 1.5 ml.L-1 de agua de las SH). Las variables medidas fueron: diámetro ecuatorial (DE), diámetro polar (DP), volumen (VOL), grosor de pericarpio (GP), numero de frutos comerciales (NFRC), numero de frutos pequeños (NFRP), número total de frutos (NTOT), rendimiento (RTO), peso seco de fruto (PSFR), firmeza (FIR), sólidos solubles totales (OBRIX), capsaicina (CAPS) y macro y micronutrientes (N, P, K, Ca, Mg y Fe. Al aplicar la solución nutritiva con...
Palavras-chave: Substancias húmicas; Solución nutritiva; Capsicum pubescens; Rendimiento; Humic substances; Nutrient solution; Yield; Maestría; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/381

Rendimiento y calidad del pasto ovillo al variar la  frecuencia e intensidad de pastoreo
Provedor de dados: 32
Autores: Villareal González, Jorge Armando.
El ovillo (Datylis glomerata L.), es una de las gramíneas más utilizadas en la zona  templada de México. El objetivo de esta investigación, fue describir el  comportamiento de ovillo en términos de rendimiento estacional y acumulado de  forraje, componentes de la persistencia de la pradera y calidad del forraje al variar la  frecuencia e intensidad con la que es pastoreado. El experimento se realizó de  febrero a diciembre de 2007 en Montecillo, Texcoco, Estado de México en 18  parcelas de ovillo de 72 m2, distribuidas en un diseño de bloques al azar, con arreglo  factorial 3 x 2 y tres repeticiones. Los tratamientos fueron tres calendarios de  frecuencias de pastoreo (14, 21 y 28 días en primavera y verano y 28, 35 y 42 días  en otoño) y dos intensidades...
Palavras-chave: Dactylis glomerata L.; Frecuencia e intensidad de pastoreo; Rendimiento; Tasa de acumulación; Densidad de tallos; Calidad nutritiva de forraje Dactylis glomerata L.; Grazing frequency and intensity; Yield; Accumulation ratio; Stem density; Nutritive quality of the forage.
Ano: 2012
URL: http://hdl.handle.net/10521/870

Efecto de la resistencia y altura de planta del trigo en la incidencia de  Septoria tritici y su expresión en el rendimiento
Provedor de dados: 32
Autores: Rodríguez Contreras, María Elsa.
Se evaluaron variedades con diferente nivel de resistencia a Septoria tritici en  parcelas con control y sin control de la enfermedad en las localidades de  Juchitepec, Edo. de México y Nanacamilpa, Tlaxcala. Se observó que los daños  en el rendimiento de trigo que causa el tizón foliar pueden llegar a ser hasta del  50% en variedades susceptibles. Se determinaron tres grupos de variedades  con base a su susceptibilidad: resistentes (Rebeca F2000) moderadamente  resistentes (Triunfo F2004) y susceptibles (Gálvez M87, Salamanca S75 y  Verano S91). De seis líneas altas y seis bajas evaluadas en parcelas con y sin  competencia (separación entre hileras de plantas), el tizón foliar afectó más a las  líneas bajas que a las altas. Parcelas con competencia...
Tipo: Tesis
Palavras-chave: Tizón foliar; Pérdidas; Rendimiento; Variedades susceptibles; Líneas altas; Líneas bajas; Rebeca F2000; Doctorado; Leaf blotch; Yield; Losses; Susceptible varieties; Tall lines; Short lines.
Ano: 2008
URL: http://hdl.handle.net/10521/1358

Desarrollo de fruto y calidad de semilla de cinco variedades de Physalis ixocarpa Brot. en el Valle del Fuerte, Sinaloa
Provedor de dados: 32
Autores: Rodríguez Burgos, Alejo.
El tomate de cáscara se explota en Sinaloa (México) desde hace 20 años y su importancia se incrementó en la última década. Existe muy poca información sistematizada del manejo y potencial productivo de diferentes variedades. Aquí se estudió el desarrollo de fruto y semilla, y la calidad de esta, en cinco variedades (Querétaro, Rendidora, Mahone, Orizaba, Carriceño) sembradas en dos fechas (FS1: 6 de septiembre y FS2: 16 de octubre de 2008). Las variedades Querétaro y Mahone tuvieron en promedio un fruto más largo (37 y 34 cm), ancho (43 y 40 cm) y pesado (38 y 34 g, respectivamente), lo que llevó a que Querétaro tuviera el rendimiento de fruto (RendF) más alto (53 t ha-1). El mejor desarrollo de cultivo se observó en FS1, debido a que en FS2 se presentó un...
Palavras-chave: Fechas de siembra; Calidad de semilla; Rendimiento; Crecimiento; Physalis ixocarpa Brot; Seeding date; Seed quality; Yield; Growth; Maestría; Producción de semillas.
Ano: 2010
URL: http://hdl.handle.net/10521/123

Efecto del cambio climático en los mercados de maíz (Zea mays L.) y sorgo (Sorghum vulgare) en México.
Provedor de dados: 32
Autores: Caamal Pat, Zulia Helena.
La incertidumbre del cambio climático y sus efectos en la agricultura llevan a los productores de granos forrajeros a buscar cultivos con mayor tolerancia a las condiciones climáticas observadas. El objetivo de este estudio fue medir el efecto del cambio climático en los mercados de maíz y sorgo en México, para lo cual se construyó un modelo Armington para el periodo 2008/2010. Los resultados obtenidos mostraron que un cambio en el rendimiento de maíz; a causa de los cambios en la temperatura y precipitación en México durante el cultivar de maíz, incrementará las importaciones de maíz y sorgo, y los precios de importación aumentarán aproximadamente en la misma proporción para ambos cultivos. Si los rendimientos de sorgo disminuyeran debido al cambio...
Palavras-chave: Importación; Modelo Armington; Precio; Rendimiento; Valor comercial; Imports; Armington model; Yield; Price; Commercial value; Economía; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2365

Demanda nutrimental y manejo agronómico del cultivo Physalis peruvianum L.
Provedor de dados: 32
Autores: Gastelum Osorio, Delma Araceli.
La uchuva (Physalis peruvianum L.) es una fruta de gran importancia en varios países por sus propiedades medicinales y potencial económico que hacen de la uchuva una alternativa de producción. En México no existe investigación en torno a esta especie sobre su manejo agronómico, suelo, clima, plagas, enfermedades y su demanda nutrimental bajo condiciones hidropónicas. El presente trabajo se realizó con el objetivo de generar información sobre la demanda nutrimental y del efecto de diferente densidad de plantación sobre el rendimiento del cultivo y calidad del fruto en condiciones protegidas y sistema hidropónico. El experimento se realizó bajo el diseño experimental completamente al azar, se evaluó el efecto de la fuerza iónica de la solución nutritiva...
Palavras-chave: Physalis peruvianum; Solución nutritiva; Densidad; Rendimiento; Absorción nutrimental; Calidad; Nutrient solution; Plant density; Yield; Nutrient uptake; Quality; Maestría; Edafología.
Ano: 2012
URL: http://hdl.handle.net/10521/705

Relaciones  NH4+/NO3- y Ca2+/K+ en la producción de fresa (Fragaria x ananassa Duch.) en hidroponia.
Provedor de dados: 32
Autores: Campos García, Tonatiu.
El objetivo de la presente investigación fue estudiar el efecto de las relaciones (en la solución nutritiva) amonio/nitrato (NH4+/NO3-) y calcio/potasio (Ca2+/K+) en plantas de fresa Fragaria x ananassa cv. Festival, cultivadas en fibra de coco en un sistema hidropónico. Los tratamientos de NH4+/NO3- fueron 100/0, 75/25, 25/75 y 0/100 en porcentaje de nitrógeno total y 58/42, 75/25, 50/50, 25/75 de Ca2+/K+. Los resultados obtenidos indicaron que las plantas con mayor crecimiento vegetativo y área foliar fueron las que se cultivaron con el tratamiento 100/0 donde se adicionó el 100% de nitrógeno en forma de amonio. También se observó que la corona es el órgano de la planta que concentra la mayor cantidad de NH4+ y NO3-. La concentración de azúcares y...
Palavras-chave: Fresa; Amonio; Nitrato; Relaciones; Producción; Strawberry; Ammonium; Nitrate; Ratio; Yield; Edafología; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2306

Comportamiento fisiológico, rendimiento y calidad de fruto de fresa cultivada en el modelo de producción intensivo "raices 150"
Provedor de dados: 32
Autores: Flores Martínez, Edis Alberto.
En esta investigación se evaluó la tasa de fijación de CO2, el rendimiento y la calidad de  fruto de fresa cv. Aromas en el modelo de producción intensivo “Raíces-150”. Este modelo  tiene las siguientes características: Dos brazos de metal unidos basalmente los cuales  forman un ángulo de 30° entre ellos, con una altura de 1.92 m. Cada brazo soporta 10  canaletas de 3 m de longitud, 0.1 m de profundidad y 0.11 m de ancho; la distancia entre  las canaletas con la misma orientación es 0.4 m en el plano vertical. Se transplantaron 10  plantas de fresa por canaleta el 23 de febrero 2006 en un sustrato compuesto de una  mezcla de turba  y agrolita en partes iguales. Se midieron la temperatura de la hoja,  temperatura del aire, tasa de fotosíntesis neta y total,...
Tipo: Tesis
Palavras-chave: Fresa (Fragaria x ananassa); Modelo de producción intensivo; Absorción de CO2; Rendimiento. (Fragaria x ananassa); Intensive production system; CO2 uptake rate; Yield; Fruit quaility.
Ano: 2012
URL: http://hdl.handle.net/10521/1016

Virus asociados al cultivo de jitomate en el estado de Morelos.
Provedor de dados: 32
Autores: Pérez Rojas, Moisés.
En un invernadero comercial de jitomate ubicado en Zacatepec, Morelos, se realizaron aplicaciones independientes de miel de abeja, Saccharomyces cerevisiae, ácido acetil salicílico, cobre-manganeso-zinc y acibenzolar S-metil para determinar su efecto sobre el rendimiento, incidencia y severidad de virosis en este cultivo. Adicionalmente, se evaluó el extracto de clavo como repelente de mosca blanca. Las plantas tratadas con levadura tuvieron la menor incidencia en la primera fecha de evaluación. Plantas asperjadas con acibenzolar S-metil mostraron la menor severidad en las tres primeras fechas de evaluación, mientras que las tratadas con miel presentaron los valores más altos de incidencia en todas las fechas de evaluación. El extracto de clavo no funcionó...
Palavras-chave: Solanum lycopersicum; Virus; Incidencia; Severidad; Rendimiento; Control; Incidence; Severity; Yield; Fitopatología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2000

Caracterización fisiológica y productiva de dos variedades mexicanas de fresa (Fragaria x Ananassa) para el subtrópico.
Provedor de dados: 32
Autores: Estrada Nolasco, Celia.
Se estudiaron parámetros fisiológicos y de rendimiento de cuatro distintas variedades de fresa (Fragaria x anannassa Duch.), dos variedades mexicanas CP Zamorana (CP 02-01) y CP Jacona (CP 02-04) y dos variedades comerciales extranjeras (Festival y Giant). La evaluación se llevó a cabo en el periodo de otoño 2009. Se midieron variables de crecimiento, de producción y variables fisiológicas El comportamiento de la transpiración (TT), conductancia estomática (CE) y la tasa de fotosíntesis neta (TF) varió durante el periodo de cosecha. Las variedades Zamorana y Jacona presentaron las mayores TF en comparación a las variedades introducidas. Así, las TF fueron mayores para la variedad Jacona, seguida de Zamorana, Festival y Giant. Las diferencias en TF entre...
Palavras-chave: Intercambio de gases; Crecimiento; Producción; Rendimiento; Fragaria x ananassa; Gas exchange; Growth; Yield; Strawberry; Maestría; Fruticultura.
Ano: 2011
URL: http://hdl.handle.net/10521/391

Sistemas de producción de fresa de altas densidades.
Provedor de dados: 32
Autores: Ramírez Gómez, Humberto.
En México se produce fresa con alta tecnología pero existe escasa investigación sobre la productividad de la fresa en sistemas hidropónicos con altas densidades. El presente estudio se realizó con la finalidad de evaluar la fisiología, rendimiento, calidad y rentabilidad de la fresa de altas densidades en cuatro sistemas hidropónicos. Los tratamientos estudiados fueron: bolsas individuales (BI), vertical con tres tubos (V3T), vertical con cuatro tubos (V4T) y vertical con macetas hidropónicas (VMH) de 42, 90, 120 y 180 plantas por módulo respectivamente. El experimento se llevó a cabo en un invernadero tipo túnel en el Colegio de Postgraduados, en Montecillo Estado de México. Para conducir el estudio los tratamientos se alojaron en un diseño experimental...
Palavras-chave: Fragaria x ananassa Duch; Sistemas hidropónicos; Variables fisiológicas; Rendimiento; Calidad; Rentabilidad; Hydroponic systems; Physiological variables; Yield; Quality; Profitability; Maestría; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/506

Crecimiento y rendimiento de haba (Vicia faba L.) en ambientes contrastantes.
Provedor de dados: 32
Autores: Pichardo Riego, Juan Carlos.
En México el cultivo de haba es de gran importancia social y económica principalmente en la región de los “Valles altos”, que aportan cerca del 98% a la producción nacional. Sin embargo debido a los bajos rendimientos de esta leguminosa se requiere un manejo del cultivo más apropiado en función de la diversidad de ambientes en que se desarrolla, incluyendo la búsqueda de cultivares de máximo rendimiento de grano seco para cada localidad. El objetivo del estudio fue determinar el comportamiento de distintos cultivares de haba en diferentes ambientes e identificar el más productivo de acuerdo a la región de estudio y a éste, aplicarle la mejor combinación de fertilización nitrogenada, fosfatada y densidad de población (DP). El estudio se realizó bajo...
Palavras-chave: Cultivar; Nitrógeno; Fósforo; Densidad de población; Rendimiento; Estabilidad de rendimiento; Máxima eficiencia biológica; Máxima eficiencia económica; Tratamiento óptimo económico; Cultivar; Nitrogen; Phosphorus; Population density; Yield; Yield stability; Maximum biological efficiency; Maximum economical efficiency; Optimum economic treatment; Doctorado; Botánica.
Ano: 2010
URL: http://hdl.handle.net/10521/157

Cultivares de frijol ejotero de diferente hábito de crecimiento en función del manejo en ambientes contrastantes.
Provedor de dados: 32
Autores: Salinas Ramírez, Nicolás.
El presente estudio se dividió en dos etapas, la primera se realizó en verano del 2008, bajo condiciones de temporal y tuvo como objetivo seleccionar dentro de cultivares de diferente hábito de crecimiento, aquellos con mayor producción de biomasa, rendimiento y calidad nutrimental, en dos ambientes Montecillo (clima semiárido, CS) y San Pablo Ixayoc (clima templado, CT). Los resultados encontrados indican que en CS los cultivares de hábito de crecimiento indeterminado (CHCI) presentaron la mayor producción de biomasa, rendimiento y calidad nutrimental del ejote (235 g m-2, 1.38 kg m-2, proteína 22 %, FDA 31 %, grasa 1.9 % y fósforo 0.080 %, respectivamente) y los valores más bajos (86 g m-2, 0.41 kg m-2, proteína 19.5 %, FDA 21.4 %, grasa 1.7 % y fósforo...
Palavras-chave: Phaseolus vulgaris L.; Rendimiento; Calidad nutrimental; Fertilizantes; Yield; Nutritional quality; Fertilizers; Doctorado; Botánica.
Ano: 2010
URL: http://hdl.handle.net/10521/326

Fertilización orgánica e inorgánica en la producción y calidad de aceites esenciales en manzanilla, menta y tomillo.
Provedor de dados: 32
Autores: Juárez Rosete, Cecilia Rocío.
Dentro de los factores agronómicos que tienen un efecto en el incremento de la productividad de los cultivos y que maximizan su potencial durante su desarrollo, la fertilización es uno de los más importantes. En plantas aromáticas y medicinales se ha demostrado que influye en el crecimiento, eleva el rendimiento de biomasa y juega un papel crucial en las características fitoquímicas de estas.  Los objetivos generales  de esta investigación  fueron evaluar el efecto de la fertilización orgánica e inorgánica sobre el crecimiento y sobre las características cualitativas y cuantitativas de aceites esenciales en manzanilla (Chamomilla recutita L.), menta (Mentha x pipperita L.) y tomillo (Thymus vulgaris L.) cultivadas bajo condiciones de invernadero; y evaluar...
Palavras-chave: Fertilización; Rendimiento; Plantas aromáticas; Compuestos bioactivos; Fertilization; Yield; Herbs; Bioactive compounds; Doctorado; Edafología.
Ano: 2010
URL: http://hdl.handle.net/10521/107

Crecimiento y rendimiento de haba (Vicia faba L.) en ambientes contrastantes.
Provedor de dados: 32
Autores: Pichardo Riego, Juan Carlos.
En México el cultivo de haba es de gran importancia social y económica principalmente en la región de los “Valles altos”, que aportan cerca del 98% a la producción nacional. Sin embargo debido a los bajos rendimientos de esta leguminosa se requiere un manejo del cultivo más apropiado en función de la diversidad de ambientes en que se desarrolla, incluyendo la búsqueda de cultivares de máximo rendimiento de grano seco para cada localidad. El objetivo del estudio fue determinar el comportamiento de distintos cultivares de haba en diferentes ambientes e identificar el más productivo de acuerdo a la región de estudio y a éste, aplicarle la mejor combinación de fertilización nitrogenada, fosfatada y densidad de población (DP). El estudio se realizó bajo...
Palavras-chave: Cultivar; Nitrógeno; Fósforo; Densidad de población; Rendimiento; Estabilidad de rendimiento; Máxima eficiencia biológica; Máxima eficiencia económica; Tratamiento óptimo económico; Cultivar; Nitrogen; Phosphorus; Population density; Yield; Yield stability; Maximum biological efficiency; Maximum economical efficiency; Optimum economic treatment; Doctorado; Botánica.
Ano: 2010
URL: http://hdl.handle.net/10521/157

Efecto de la fertilización de nopal (Opuntia ficus-indica) sobre la productividad y calidad de grana cochinilla (Dactylopius coccus Costa).
Provedor de dados: 32
Autores: Coronado Flores, Violeta.
La grana (Dactylopius coccus Costa) es la única fuente del colorante natural rojo carmín utilizado ampliamente en las industrias farmacéutica, alimentaria y cosmética. Este colorante es considerado uno de los más seguros desde el punto de vista de inocuidad y está permitido por legislaciones alimentarias en diversos países, su creciente demanda ha estimulado la investigación para obtener mayor producción y calidad del insecto. Se evalúo el efecto de la fertilización del nopal Opuntia ficus-indica, substrato alimenticio del insecto; sobre la producción y calidad en función del ácido carmínico (AC) contenido, en la grana Dactylopius coccus Costa, y su viabilidad económica. Se utilizó un diseño de parcelas divididas. Los resultados se analizaron con un ANDEVA...
Palavras-chave: Cochinilla; Fertilización; Rendimientos; Nopal; Cochineal; Fertilization; Yield; Cactus pear; Puebla; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional.
Ano: 2011
URL: http://hdl.handle.net/10521/454

Dinámica de crecimiento y rendimiento de forraje de diez variedades de alfalfa.
Provedor de dados: 32
Autores: Rojas García, Adelaido Rafael.
El objetivo del presente estudio fue evaluar la respuesta productiva de 10 variedades de alfalfa con intervalos de corte definidos estacionalmente. El estudio se realizó de junio de 2010 a junio de 2011 en el Colegio de Postgraduados. Las variedades evaluadas fueron: Aragón, Valenciana, Chipilo, Milenia, Oaxaca, San Miguelito, Júpiter, Atlixco, Vía láctea y Cuf 101, las cuales se distribuyeron en un diseño completamente al azar con cuatro repeticiones. Las variedades Júpiter y Milenia con 20,275 y 20,644 kg MS ha-1 registraron los mayores rendimientos y el menor para las variedades Cuf 101 y Aragón con 13,350 y 14,488 kg MS ha-1, respectivamente. Las variedades con mayor tasa de crecimiento promedio anual fueron Milenia y Júpiter con 57 y 56 kg MS ha-1d-1,...
Palavras-chave: Medicago sativa; Rendimiento; Radiación; Indice de área foliar; Yield; Radiation; Foliar area index; Ganadería; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/514

Efecto de la fertilización de nopal (Opuntia ficus-indica) sobre la productividad y calidad de grana cochinilla (Dactylopius coccus Costa).
Provedor de dados: 32
Autores: Coronado Flores, Violeta.
La grana (Dactylopius coccus Costa) es la única fuente del colorante natural rojo carmín utilizado ampliamente en las industrias farmacéutica, alimentaria y cosmética. Este colorante es considerado uno de los más seguros desde el punto de vista de inocuidad y está permitido por legislaciones alimentarias en diversos países, su creciente demanda ha estimulado la investigación para obtener mayor producción y calidad del insecto. Se evalúo el efecto de la fertilización del nopal Opuntia ficus-indica, substrato alimenticio del insecto; sobre la producción y calidad en función del ácido carmínico (AC) contenido, en la grana Dactylopius coccus Costa, y su viabilidad económica. Se utilizó un diseño de parcelas divididas. Los resultados se analizaron con un ANDEVA...
Palavras-chave: Cochinilla; Fertilización; Rendimientos; Nopal; Cochineal; Fertilization; Yield; Cactus pear; Puebla; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional.
Ano: 2011
URL: http://hdl.handle.net/10521/454

Portainjertos de jitomate nativos (Solanum lycopersicum L.) tolerantes a niveles altos de conductividad eléctrica en la solución nutritiva.
Provedor de dados: 32
Autores: Sanjuan Lara, Felipe.
La diversidad de poblaciones de jitomate mexicano es una fuente invaluable de recursos fitogenéticos para la búsqueda de mejoramiento a estrés salino e incrementar la productividad en suelos y agua con salinidad. Las variedades (injerto) sensibles a la salinidad sobre portainjertos tolerantes a estrés salino es un método alternativo para producir en ambientes salinos. El presente estudio tuvo como objetivo general evaluar líneas de jitomate nativo en condiciones de salinidad y con base a resultados de carácter agronómico y morfológico seleccionar portainjertos tolerantes a salinidad en condiciones protegidas. El estudio se dividió en tres fases: Fase I, se colectaron y caracterizaron en casa sombra 120 selecciones individuales de jitomate con un productor...
Palavras-chave: Solanum lycopersicum; Portainjertos; Estrés salino; Rendimiento; Calidad; Root stocks; Salinity stress; Yield; Quality; Fisiología Vegetal; Doctorado.
Ano: 2013
URL: http://hdl.handle.net/10521/2033

Rendimiento y calidad del pasto ovillo al variar la frecuencia e intensidad de pastoreo
Provedor de dados: 32
Autores: Villarreal González, Jorge Armando.
El ovillo (Datylis glomerata L.), es una de las gramíneas más utilizadas en la zona  templada de México. El objetivo de esta investigación, fue describir el  comportamiento de ovillo en términos de rendimiento estacional y acumulado de  forraje, componentes de la persistencia de la pradera y calidad del forraje al variar la  frecuencia e intensidad con la que es pastoreado. El experimento se realizó de  febrero a diciembre de 2007 en Montecillo, Texcoco, Estado de México en 18  parcelas de ovillo de 72 m2, distribuidas en un diseño de bloques al azar, con arreglo  factorial 3 x 2 y tres repeticiones. Los tratamientos fueron tres calendarios de  frecuencias de pastoreo (14, 21 y 28 días en primavera y verano y 28, 35 y 42 días  en otoño) y dos intensidades...
Tipo: Tesis
Palavras-chave: Dactylis glomerata L.; Frecuencia e intensidad de pastoreo; Rendimiento; Tasa de acumulación; Densidad de tallos; Calidad nutritiva de forraje; Maestría; Ganadería; Grazing frequency and intensity; Yield; Accumulation ratio; Stem density; Nutritive quality of the forage.
Ano: 2009
URL: http://hdl.handle.net/10521/1230

Dinámica de crecimiento y rendimiento de alfalfa en respuesta a diferente frecuencia de corte
Provedor de dados: 32
Autores: Mendoza Pedroza, Sergio Ibán.
En México, la alfalfa es la leguminosa más utilizada en la alimentación del ganado lechero, debido a su alta cantidad y calidad de forraje obtenido por superficie. El objetivo del presente estudio fue determinar el efecto de la frecuencia de corte en la dinámica de crecimiento, rendimiento y calidad de la alfalfa. El estudio se realizó de agosto de 2006 a agosto de 2007 en el Colegio de Postgraduados con alfalfa Variedad “San Miguelito”. Los tratamientos fueron cuatro frecuencias (3, 4, 5 y 6 semanas para primavera-verano y 4, 5, 6 y 7 semanas para otoño-invierno) distribuidos aleatoriamente en un Diseño Experimental Completamente al Azar, con 4 repeticiones. En rendimiento acumulado existieron diferencias significativas (P&lt;0.05), mostrando el menor...
Tipo: Tesis
Palavras-chave: Medicago sativa; Frecuencia de corte; Rendimiento; Calidad; Área foliar; Maestría; Ganadería; Cutting frequency; Yield; Quality; Leaf area.
Ano: 2008
URL: http://hdl.handle.net/10521/1581

Rendimiento y calidad del pasto ovillo al variar la  frecuencia e intensidad de pastoreo
Provedor de dados: 32
Autores: Villareal González, Jorge Armando.
El ovillo (Datylis glomerata L.), es una de las gramíneas más utilizadas en la zona  templada de México. El objetivo de esta investigación, fue describir el  comportamiento de ovillo en términos de rendimiento estacional y acumulado de  forraje, componentes de la persistencia de la pradera y calidad del forraje al variar la  frecuencia e intensidad con la que es pastoreado. El experimento se realizó de  febrero a diciembre de 2007 en Montecillo, Texcoco, Estado de México en 18  parcelas de ovillo de 72 m2, distribuidas en un diseño de bloques al azar, con arreglo  factorial 3 x 2 y tres repeticiones. Los tratamientos fueron tres calendarios de  frecuencias de pastoreo (14, 21 y 28 días en primavera y verano y 28, 35 y 42 días  en otoño) y dos intensidades...
Palavras-chave: Dactylis glomerata L.; Frecuencia e intensidad de pastoreo; Rendimiento; Tasa de acumulación; Densidad de tallos; Calidad nutritiva de forraje Dactylis glomerata L.; Grazing frequency and intensity; Yield; Accumulation ratio; Stem density; Nutritive quality of the forage.
Ano: 2012
URL: http://hdl.handle.net/10521/899

Análisis técnico-económico de la Cooperativa Cafetalera Juan Ramón Corea bajo los principios de las Buenas Prácticas Agrícolas, ciclo agrícola 2009/2010.
Provedor de dados: 32
Autores: Cuadra Franco, Luis Alberto.
Las exigencias de inocuidad en el mercado internacional del café están empujando a los productores a cambiar las prácticas inapropiadas de manejo del cultivo del café. Para hacer frente a esta situación las instituciones públicas junto con el sector cafetalero impulsan la implementación de las Buenas Prácticas Agrícolas (BPA) en la producción primaria de café. El objetivo del estudio fue analizar el efecto de un protocolo básico de BPA sobre la utilidad neta y el margen de ganancia y su viabilidad bajo las condiciones socioeconómicas de los socios de la cooperativa Juan Ramón Corea. Así, se estudiaron 29 pequeñas fincas cafetaleras en las cuales se reconstruyó el itinerario técnico ejecutado durante el ciclo agrícola 2008/2009, haciendo énfasis en los...
Palavras-chave: Inocuidad; Buenas prácticas agrícolas; Rendimiento; Café; Utilidad neta; Safety food; Good Agricultural Practice; Yield; Coffee; Net income; Maestría Tecnológica; EDAR; Desarrollo Rural Territorial Sustentable CP-UNAN.
Ano: 2010
URL: http://hdl.handle.net/10521/323

Fosfitos en la producción de fresa.
Provedor de dados: 32
Autores: Estrada Ortiz, Elías.
El efecto de fosfitos en plantas depende fuertemente del estado nutrimental de fósforo en el organismo vivo, ya que plantas deficientes en fósforo son vulnerables a aplicaciones de fosfitos (H2PO3-). La presente investigación se realizó con el objetivo de determinar el efecto del suministro de distintos porcentajes de H2PO3- en la solución nutritiva, sobre el crecimiento, rendimiento y calidad de fruto en fresa. El experimento se realizó en un invernadero tipo túnel del Colegio de Postgraduados, en Montecillo, México, utilizando riego por goteo y tezontle como sustrato, en un diseño experimental en bloques al azar generalizado. Se modificó la solución nutritiva Steiner para utilizarla, en una primera fase al 50%, y al comenzar la fructificación se aumentó...
Palavras-chave: Fragaria x ananassa; Fosfitos; Rendimiento; Calidad de fruto; Antocianinas; Phosphites; Yield; Fruit quality; Anthocyanins; Maestría; Edafología.
Ano: 2010
URL: http://hdl.handle.net/10521/165

Crecimiento, desarrollo, extracción nutrimental, rendimiento y calidad del jitomate de costilla (Solanum lycopersicum Mill.).
Provedor de dados: 32
Autores: Urrieta Velázquez, José Alberto.
El enfoque tradicional de la producción de jitomate (Solanum lycopersicum Mill.) fue el incremento del rendimiento a través del control de las condiciones ambientales y manejo agronómico, siendo el peso individual de los frutos y aspectos externos de los mismos los principales parámetros de calidad. En la actualidad, además de aspectos externos, los consumidores eligen los jitomates por su sabor, propiedades nutracéuticas e incluso por el manejo durante su crecimiento. Esto ha cambiado el rumbo del mejoramiento genético del jitomate, y se ha iniciado el uso de poblaciones silvestres y cultivadas para mejorar tales aspectos de calidad. En México, un alternativa potencial es jitomate de costilla (Solanum lycopersicum Mill.), que se cultiva localmente y tiene...
Palavras-chave: Jitomate de costilla; Solanum lycopersicum; Rendimiento; Calidad; Yield; Quality; Doctorado; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/474

Producción de chile guajillo (Capsicum annuum  L.) en función de la edad al trasplante, aplicación de residuo de girasol y tipo de suelo
Provedor de dados: 32
Autores: Vázquez Casarrubias, Gabino.
En relación a la siembra directa el trasplante en el cultivo de chile permite el uso eficiente de semillas,  uniformidad en la población y seguridad en la producción. Sin embargo, dicha producción dependerá  de la edad de la plántula al trasplante. El objetivo del presente estudio fue evaluar el crecimiento y  rendimiento de dos cultivares de chile Guajillo (Capsicum annuum L.) Apaxtleco y Mirasol en función  de la edad al trasplante, el manuscrito se presenta en 4 capítulos: Capítulo I. Crecimiento y  rendimiento de chile guajillo Apaxtleco y Mirasol en función de la edad al trasplante bajo condiciones  de invernadero, en donde se establecieron 3 fechas de trasplante a los 15, 30 y 45 días después de la  emergencia (dde). Capítulo II. Crecimiento y...
Tipo: Tesis
Palavras-chave: Altura; Área foliar; Botones; Flores; Biomasa; Rendimiento; Indice de cosecha; Maestría; Botánica; Height; Leaf area; Buttons; Flowers; Biomass; Yield; Harvest index.
Ano: 2008
URL: http://hdl.handle.net/10521/1496

Optimizing nitrogen rates in the midwestern United States for maximum ecosystem value
Provedor de dados: 7
Autores: Ewing, Patrick M; University of Minnesota, Department of Agronomy and Plant Genetics ; ewing069@umn.edu; Runck, Bryan C; University of Minnesota, Department of Geography, Environment and Society; runck014@umn.edu.
The importance of corn production to the midwestern United States cannot be overestimated. However, high production requires high nitrogen  fertilization, which carries costs to environmental services such as water quality. Therefore, a trade-off exists between the production of corn yield and water quality. We used the Groundwater Vulnerability Assessment for Shallow depths and Crop Environment Resource Synthesis-Maize models to investigate the nature of this trade-off while testing the Simple Analytic Framework trade-offs featured in this Special Feature. First, we estimated the current levels of yield and water quality production in northeastern Iowa and southern Minnesota at the 1-square-kilometer, county, and regional scales. We then constructed an...
Tipo: Peer-Reviewed Reports
Palavras-chave: Agriculture; Agroecology; Corn belt; DSSAT; Fertilization rate; Frontier analysis; Groundwater nitrate; GWAVA-S; Land use; Nitrogen; Rotation; Row crops; Simple Analytics Framework; Yield.
Ano: 2015

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems
Provedor de dados: 70
Autores: CORTEZ,JORGE W.; CHAVES,RODRIGO G.; ORLANDO,ROBERTO C.; SOUZA,CRISTIANO M. A. DE; SOUZA,PAULO H. N. DE.
ABSTRACT With the short period of the sowing process, we observed an increase in the seeder speed set in several soil management systems that may result in decreased soybean yield and problems with penetration resistance. We aimed to assess the penetration resistance (PR) and agronomic characteristics of soybean on soil tillage and sowing speed. The randomized block design in split plot with four replications was used. The treatments consisted of six management systems, applied to the plots: no tillage (NT), no tillage and chiseling (NTc), no tillage and cross chiseling (NTcc), conventional tillage (CT), reduced tillage (RT) and conservation tillage (CsT) and four speeds, (4.6; 5.5; 7,3 and 7.8 km h-1) applied in the subplot at the time of soybean seeding....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural mechanization; No tillage; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000400664

RELATIONSHIP BETWEEN COFFEE CROP PRODUCTIVITY AND VEGETATION INDEXES DERIVED FROM OLI / LANDSAT-8 SENSOR DATA WITH AND WITHOUT TOPOGRAPHIC CORRECTION
Provedor de dados: 70
Autores: Nogueira,Sulimar M. C.; Moreira,Maurício A.; Volpato,Margarete M. L.
ABSTRACT The reflectance values of a coffee crop are influenced by several factors such as planting direction, crop spacing, time of the year, plant age and topography which reduces the accuracy of the estimates derived from remote sensing data. In this context were evaluated the relationships between coffee productivity and values of NDVI, SAVI and NDWI vegetation indexes with and without topographic reflectance correction for different coffee phenological phases for the crop years 2013/2014 (low productivity) and 2014/2015 (high productivity). The evaluations were made through the standard deviation of vegetation indices (VIs), linear relationship between the cosine factor and the VIs and between VIs and coffee productivity. The best phenological phases...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee; NDVI; NDWI; Yield; SAVI; Remote sensing.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000300387

COMPARISON OF ARROWROOT (Maranta arundinacea) AND CASSAVA STARCH EXTRACTION IN SEPARATION, CONCENTRATION, AND PURIFICATION USING A ROTATING SIEVE UNDER WATER
Provedor de dados: 70
Autores: Fabiano,P. Branco; Marney,P. Cereda; Marco,H. Naka.
ABSTRACT Brazil is home to several plant species that exhibit potential for starch extraction. The arrowroot plant stands out owing to its South American origin. Arrowroot starch is especially important for fine confectionery, which is a high-value niche market. Thus, a small producer could benefit from the high prices of arrowroot starch. However, to have consistent production, the extraction should be performed using simple, safe, and inexpensive equipment. Starch extraction involves disintegration of the raw material under water, followed by the separation of fibrous bagasse from the starch–water suspension. This study presents an equipment design based on the concept of appropriate technology that is suitable for small producers to extract starch. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Efficiency; Yield; Machine project; Water consumption; Granulometry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100090

Trickle irrigation: effects on papaya crop
Provedor de dados: 70
Autores: Carvalho,Gian C.; Coelho,Eugênio F.; Silva,Afrânio dos S. A. M. da; Pamponet,Arthur J. M.
The objective of this study was to evaluate growth and yield of papaya cv. Sunrise solo under trickle irrigation system configurations. A random block design was used with six treatments and four replications. Treatments were: T1- a 32 L h-1 micro sprinkler; T2 - a 43 L h-1 micro sprinkler and T3 - a 60 L h-1 micro sprinkler for four plants; T4 - Drip system with four emitters per plant on one lateral line per crop row; T5 - Drip system with eight emitters per plant on two laterals line per crop row; T6 - Drip system with four emitters per plant on one lateral line distributed as pig tail. The dripper flow rate was 4 L h-1and they were apart each other 0.50 m. Crop growth variables were measured every two weeks. Production variables were evaluated during...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carica Papaya L; Yield; Trickle irrigation systems.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000200005

Nonparametric stability methods for interpreting genotype by environment interaction of bread wheat genotypes (Triticum aestivum L.)
Provedor de dados: 74
Autores: Akcura,Mevlut; Kaya,Yuksel.
Evaluation of performance stability and high yield is essential for yield trials conducted in different environments. We determined the stability of 10 bread wheat (Triticum aestivum L.) genotypes (5 cultivars and 5 advanced lines) using nonparametric stability measures and compared nonparametric stability statistics across 19 environments in the Central Anatolian Region of Turkey. Experiments were setup in a randomized complete block design with four replications. Nonparametric stability measures revealed that AL-2, Karahan-99 and Altay-2000 were the most stable and well adapted genotypes across the 19 environments. In addition, it was concluded that graphs of mean grain yield (t ha-1) vs. nonparametric measures (Si(¹), Si(²), S(³), Si(6) and σgy) values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bread wheat (Triticum aestivum L.); Nonparametric stability analysis; Yield.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500018

Plant density in production of mini lettuce cultivars in organic system management
Provedor de dados: 75
Autores: Takahashi,Keiko; Cardoso,Antonio II.
Production of mini vegetables in organic system is a good alternative to improve profit, but there are no researches about the optimum plant density for these cultivars in Brazilian conditions. Two experiments were conducted to evaluate the production of mini lettuce cultivars in different plant densities. Experiment 1 was conducted from January 1th (sowing) to February 10th(harvesting), 2012. The experimental design was completely randomized blocks, with six treatments in factorial scheme, 3 mini lettuce cultivars (Tudela, Renoir and Sartre) x 2 spacing between plants (16 and 20 cm), with eight replications and plots (2.04 m2) with six rows, spaced 15 cm. Experiment 2 was conducted from June 6th (sowing) to July 18th (harvesting), 2012. The cultivars...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Spacing; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000300342

Production and quality of melon hybrid Mandacaru irrigated with different levels of salinity
Provedor de dados: 75
Autores: Medeiros,Damiana Cleuma de; Medeiros,José Francismar de; Pereira,Francisco Aécio de L; Silva,Sonally Cristina de M; Amâncio,Maria das Graças.
Among the problems faced by the melon crop in the state of Rio Grande do Norte, northeastern Brazil, the effect of water and soil salinity is considered one of the key factors to limit fruit production and quality. The aim of this work was to study the effects of using irrigation waters with different salinity levels on yield and quality of fruits of the yellow melon hybrid Mandacaru. A randomized complete block design was used with five treatments (irrigation water salt concentrations: 0.54, 1.48, 2.02, 3.03, 3.9 dS m-1) and four replications. The effects of these concentrations were evaluated through, number of marketable fruits per plant, marketable and total fruit yield, average marketable fruit mass, soluble solids content and pulp firmness. Increment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo L; Electric conductivity; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000400026

Nitrogen applied in okra under non-tightness grown and residual fertilization
Provedor de dados: 75
Autores: Cardoso,Marinice O; Berni,Rodrigo F.
The aim of this study was to evaluate, in the Amazonian rainy season, the effect of nitrogen applied in okra under non-tightness grown and residual fertilization. The trial was carried out in the Embrapa Amazonia Ocidental, in Iranduba, Amazonas state, Brazil, between October/2010 and February/2011, in dystrophic Yellow Argisoil, medium texture, using pits with residual fertility. The experimental design was of randomized blocks with four repetitions (two lines with four plants, spacing of 1.5x1.0 m) and four main treatments (urea: 0.0; 20.0; 40.0 and 60.0 g plant-1 corresponding to 0.0; 60.0; 120.0 and 180.0 kg ha-1 of N, respectively, in two portions) using cv Dardo. Besides two additional treatments: chicken manure (1.0 L pit-1, with the cv Dardo) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abelmoschus esculentus; Fertilization; Organic manure; Yield.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000400014

Plant density and nitrogen fertilization in Swiss chard
Provedor de dados: 75
Autores: Echer,Márcia de M; Zoz,Tiago; Rossol,Charles Douglas; Steiner,Fábio; Castagnara,Deise D; Lana,Maria do C.
An experiment was conducted to evaluate the effect of plant spacing and nitrogen fertilization on Swiss chard's yield, from September to November 2009. The experimental design was of randomized blocks in split plot with four replications. In the plots were allocated the two plant spacings (0.30 and 0.50 m) and in the subplots the five doses of nitrogen (0, 40, 80, 120 and 160 kg ha-1). The crop was harvested 90 days after transplanting. The plant spacing of 0.50 m provided increased production of total fresh weight of shoot (961.7 g plant-1) and marketable (873.1 g plant-1). However, the highest total yield (77.8 t ha-1) and marketable (64.5 t ha-1) was achieved with the smaller spacing between plants (0.30 m). The N rates applied in coverage until 160 kg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta vulgaris var. cycla; Nitrogen; Yield.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000400023

Production and characterization of inter and intraspecific hybridization eggplant
Provedor de dados: 75
Autores: Ghani,Muhammad A; Abbas,Muhammad M; Ziaf,Khurram; Azam,Muhammad; Ali,Basharat; Amjad,Muhammad; Anjum,Romana; Noor,Anam; Zahid,Mubashir.
ABSTRACT The eggplant is a highly valuable horticultural crop grown all over the world and it is of substantial economic importance in Asia. However, its production is severely threatened by several soil-borne and foliar diseases, insect-pests, drought, heat, and frost damage. Therefore, efforts to transfer useful resistance genes into eggplant from their wild relatives is important. In the present study, interspecific and intraspecific hybridization was carried out, that included three cultivated genotypes of eggplant (Solanum melongena MEE, Solanum melongena MEP, Solanum melongena MEB) and one wild Solanum species (Solanum incanum INC). The F1 hybrids were made by inter and intraspecific hybridization. A total of 632 possible inter and intraspecific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum melongena; Solanum incanum; Solanaceae; Hybrid; Heterosis; Yield; Wild species.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000400407

Production and quality of carrot in function of split application of nitrogen doses in top dressing
Provedor de dados: 75
Autores: Colombari,Lidiane F; Lanna,Natália BL; Guimarães,Leysimar RP; Cardoso,Antonio Ismael Inácio.
ABSTRACT Fertilizers supply in the appropriate period and dose is important to obtain satisfactory production. In this research we studied the effect of different split applications and doses of nitrogen in top dressing on the production of the carrot and the physicochemical characteristics of the roots. Nine treatments, resulting from a factorial of 4x2+1 (control without nitrogen fertilization), were evaluated in the randomized blocks experimental design, with four replications. The first factor were four nitrogen (N) doses in top dressing (60, 90, 120 and 150 kg ha-1) and the second were two forms of splitting [three equal applications (1/3+1/3+1/3 of the dose) and one with increasing proportions (1/6+2/6+3/6 of the dose) applied 15, 30 and 50 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Daucus carota; Carotenoids; Fertilization; Root quality; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300306

Yield of gherkin in response to doses of bovine manure
Provedor de dados: 75
Autores: Oliveira,Arnaldo Nonato P de; Oliveira,Ademar P de; Leonardo,Francisco de Assis P; Cruz,Iordam da S; Silva,Damiana F da.
Considering the importance of gherkin in Northeastern Brazil, studies focusing on increasing its quality and yield are powerful tools to improve people social and economical condition in this region. The effects of doses of bovine manure were evaluated in gherkin yield in an experiment using cultivar Nordestino, from May to September 2006, at the Federal University of Paraíba, in Areia County, Paraíba State, Brazil. The experimental design was randomized complete blocks, with five treatments (0; 10; 20; 30, and 40 t ha-1) of bovine manure, in four replications. The working area in each experimental plot corresponded to 80 m², including 20 plants, with 2.0 x 2.0 m spaces. The highest number of fruits per plant (30) was achieved with 32.2 t ha-1 of bovine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis anguria L.; Organic fertilization; Yield.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000100020

Selection of sweet potato clones for the region Alto Vale do Jequitinhonha
Provedor de dados: 75
Autores: Andrade Júnior,Valter C de; Viana,Daniel JS; Fernandes,José SC; Figueiredo,José A; Nunes,Ubirajara R; Neiva,Irã P.
An experiment was carried out from December 2005 to July 2006, in the Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), in Diamantina, Minas Gerais State, Brazil, aiming at selecting sweet potato clones for the Alto Vale do Jequitinhonha. We evaluated nine clones from the UFVJM germplasm bank, using cultivars Brazlândia Branca, Brazlândia Roxa, and Princesa as controls. The experimental design was blocks at random, with four replications. Plants were harvested seven months after transplanting. We assessed the fresh mass yield of vines and roots, as well as root shape and resistance to soil insects. Genotypes did not differ from each other for the fresh mass yield of vines (ranging from 3.81 to 11.76 t ha-1). The total yield of roots ranged...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Yield; Quality; Resistance to insects.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000300024

Guidelines for irrigation scheduling of peach palm for heart-of-palm production in the São Francisco Valley, Brazil
Provedor de dados: 75
Autores: Bassoi,Luís Henrique; Flori,José Egídio; Silva,Emanuel Elder G. da; Silva,José Antonio M. e.
The water consumption, crop coefficient and effective rooting depth of the peach palm cultivated in a Vertisol were evaluated over two years and three months, from planting to fifth harvest, in Juazeiro, Bahia State, Brazil. Plants were irrigated by microsprinklers under two irrigation treatments, full irrigation (FI) and reduced irrigation (RI), and the amount of water applied in RI corresponded to 75% of that of FI. Water consumption and crop coefficient has increased markedly at the first harvest (7.3 mm day-1 and 1.2, respectively, in FI treatment) in the thirteenth month, as a consequence of plant canopy development. After that, plants were harvested every three or four months, and these values varied a little due to decrease of the stand. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactris gasipaes Kunth; Semi-arid; Yield.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000400022

Yield of determinate tomato cultivars grown in a closed hydroponic system as affected by plant spacing
Provedor de dados: 75
Autores: Maboko,Martin M; Plooy,Christian P Du; Chiloane,Silence.
ABSTRACT In South Africa there are no established spacing recommendations for determinate tomato cultivar production under closed hydroponic systems. This study was conducted to determine yield and quality of hydroponically grown determinate tomato cultivars at different plant densities. Four determinate tomato cultivars (Dynimo, Mariana, Mion and Sama) were subjected to four plant densities (10, 16, 20 and 25 plants/m2) during the spring/summer and summer/fall seasons. Experimental layout was a randomized complete block design in a factorial scheme of four plant spacing x four cultivars with three replicates. There were no significant differences in marketable yield between the cultivars tested during the spring/summer and summer/fall seasons. Cultivar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Gravel-film technique; Yield; Soilless cultivation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000200258

Nitrate production and accumulation in lettuce as affected by mineral Nitrogen supply and organic fertilization
Provedor de dados: 75
Autores: Pôrto,Mônica L; Alves,Jailson do C; Souza,Adailson P de; Araújo,Raunira da C; Arruda,Jandeilson A de.
Lettuce is one of the leading vegetables in Brazil. However, studies concerning its fertilization for the Northeastern region of the country are still scarce. This work was carried out to evaluate the effects of mineral Nitrogen supply and organic fertilization on the production and nitrate accumulation in lettuce, cultivar Elba, in the semi-arid zone of Paraíba, Brazil. A randomized block design, with four replications, was used to test five doses of cattle manure (30; 60; 90; 120, and 150 t ha-1), five doses of N supplied as urea (30; 60; 90; 120, and 150 kg ha-1), and a control without fertilization. Along with mineral N, the other nutrients were also supplied using mineral sources. No additional nutrients were supplied where organic fertilization was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa L.; Lettuce; Cattle manure; Urea; Yield.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000200019

Growth, assimilate partition and yield of melon charenthais under different shading screens
Provedor de dados: 75
Autores: Pereira,FHF; Puiatti,M; Finger,FL; Cecon,PR.
In this experiment we evaluated the growth, partition of assimilates and yield of melons type hybrid Charenthais 'Fleuron' under different shading nets. The experiment was conducted at Federal University of Viçosa, from November 24, 2003 to March 11, 2004. The treatments consisted of four growth environmental conditions, as follows: control (full sun), and under Aluminet® 30%-O, Cromatinet® 30%-O, Sombrite® 30%, with reduction of photosynthetic active radiation (PAR) of 30.85%, 35.9% and 32.0%, respectively. The experiment was arranged in a complete random design with four replicates. For the periodically evaluated characteristics we used a sub divided parcel 4 x 7 with the growing conditions in the parcel and the evaluations on the sub parcel (0, 14, 28,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Light; Leaf area; Dry weight; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000100015

Production and resistance of three scallion cultivars to pink root
Provedor de dados: 75
Autores: Marcuzzo,Leandro L; Carvalho,Jaqueline.
The production of scallion has been widely exploited on small farms, since it requires little care and is largely commercialized close to the production sites. Pink root, caused by Phoma terrestris (syn. Pyrenochaeta terrestris),is among the main diseases affecting this crop. However, little information on aspects related to yield and few cultivars resistant to the disease are available. In this study we evaluated these variables on Konatsu, Natsu and Nebuka cultivars. The experiment was carried out in Lontras, Santa Catarina state, Brazil, in a complete randomized blocks design with four replications. After 80 days of transplantation the following parameters were evaluated: plant mass, total and marketable number of leaves, total and marketable mass of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium fistulosum; Phoma terrestris; Yield; Genotypes.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000300363

Adequate timing for heart-of-palm harvesting in King palm
Provedor de dados: 75
Autores: Bovi,Marilene L.A.; Saes,Luiz Alberto; Uzzo,Roberta Pierry; Spiering,Sandra H.
Heart-of-palm, palm heart, or "palmito" can be considered as a non-conventional vegetable, largely consumed in Brazil and exported to more than sixty countries. Timing of heart-of-palm harvesting is a critical issue in palmito agribusiness, since it affects yield, quality and costs. A three-year field experiment was utilized to identify the correct timing for king palm heart-of-palm harvesting, from the standpoint of maximizing yield and minimizing growing period. The experimental site was located at Pariqueraçu, Vale do Ribeira, a region where palmito agribusiness has increased recently, due to adequate climatic conditions, low costs and high industry demand. Crop was grown in 2 x 0.75 m spacing, utilizing six-month old seedlings. Growth was assessed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Archontophoenix alexandrae; Palmito; Growth; Yield; Quality.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362001000200008

Growth and production of nasturtium flowers in three hydroponic solutions
Provedor de dados: 75
Autores: Melo,Evanisa Fátima RQ; Santos,Osmar S dos.
This experiment was carried out during April to August 2003 in a greenhouse at the Universidade Federal de Santa Maria, Rio Grande do Sul state, Brazil. The growth and production of nasturtium flowers (Tropaeolum majus) in hydroponics NFT system was typified. Treatments were displayed in a 3x11 factorial, with six replications, in entirely randomized experimental design, and were composed of three nutrition solutions and 11 assessment dates. Each plant was separated between aerial part and root for the evaluation of dry mass. The blossoming started 49 days after the transplant (DAT). The plants presented good development in hydroponics, as well as growing dry mass, stature, leaf area and IAF, during the cycle. The culture's growth rate presented larger...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropaeolum majus; Capuchinha; Edible flowers; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000400023

Mulches for yacon cultivation
Provedor de dados: 75
Autores: Oliveira,Fabio Luiz; Venturim,Cristiano Henrique P; Silva,Diego Mathias N; Quaresma,Mateus Augusto L; Dalvi,Leandro P.
ABSTRACT In Brazil, studies on commercial exploitation of yacon are still scarce. A growing interest in this vegetable has demanded some researches on this crop cultivation management, though. Considering that yacon has a long cycle, which exposes the soil, studies on mulch management will be of great value. We used a randomized complete block design, with five replicates, under different soil mulches for yacon cultivation: two plastic film covers (black and double-sided), four mulches (corn husk, coffee husk in three levels), and the control (bare soil). Plastic mulch can be used for yacon cultivation, considering that the double sided plastic provides greater production of total roots; however, the same yield of the most valued roots was obtained using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smallanthus sonchifolius; Tuberous root; Yield; Soil protection.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300389

Oregano production under various water depths estimated by means of the class A pan evaporation
Provedor de dados: 75
Autores: Marques,Patricia Angélica A; Bernardi Filho,Lineu; Oliveira,Ricardo B de.
The purpose of this experiment was to analyze the effect of five irrigation water depths on oregano production. Oregano is a plant rich in essential oil, commonly used as seasoning in food preparation. The water depths were estimated based on the class A pan evaporation (CPE): 0 CPE (without water replacement); 25 CPE, 50 CPE, 75 CPE, and 100% CPE. The analyzed variables were fresh and dry weight of leaves and roots, yield, net return, and water use efficiency. The experiment was carried out in Presidente Prudente, São Paulo State, Brazil, from February to May 2006. The best results for all the studied variables were found when 100% CPE was used. A linear positive relation was observed between water increments and fresh and dry weight of both the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Origanum vulgare L.; Evaporation; Medicinal plants; Yield; Net profit; Water use efficiency.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000100012

Selectivity of pre-emergence herbicides in potato cv. Innovator
Provedor de dados: 75
Autores: Luz,José Magno Q; Fonseca,Luciano F; Duarte,Ivaniele N.
ABSTRACT Herbicide tolerance differs among potato cultivars. Thus, pre-emergence herbicides in potatoes need to be studied. We evaluated weed control, selectivity and potato yield of cv. Innovator with the herbicides clomazone, metribuzin and linuron. The experimental design was randomized blocks with four replications. One experiment was installed in 2014 (experiment 1, 5 treatments) and another in 2015 (experiment 2, 7 treatments), irrigated by central pivot in Perdizes-MG, Brazil. In experiment 1 treatments consisted of a control (T1), a hoed control (T2), clomazone (360 g ha-1) (T3), metribuzin (480 g ha-1) (T4), and linuron (990 g ha-1) (T5). The treatments in experiment 2 repeated those in experiment 1 (T1 to T5) and added clomazone + metribuzin (360...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Yield; Weed.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000200223

Lima beans production and economic revenue as function of organic and mineral fertilization
Provedor de dados: 75
Autores: Alves,Adriana U; Oliveira,Ademar P de; Alves,Anarlete U; Dornelas,Carina SM; Alves,Edna U; Cardoso,Edson A; Oliveira,Arnaldo Nonato P de; Cruz,Iordan da S.
Lima beans (Phaseolus lunatus L.) are alternative food and income sources for the population of Northeastern Brazil. In this region, lima beans are consumed either as green or dry grains. However, low yields have been observed, a challenge that could be overcome by adequate organic and mineral fertilization. This work intended to assess lima beans yield, cultivar Raio de Sol, as affected by doses of cattle manure in the presence and absence of mineral NPK fertilization. The experiment was carried out at the Federal University of Paraíba, Brazil, from September, 2004 to May, 2005. The experimental design was of randomized blocks, with four replications, 40-plant plots, spaces of 1.00 x 0.50 between and within rows, respectively. Treatments were displayed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus lunatus L.; Organic fertilization; Mineral fertilization; Yield.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000200024

Avaliação do comportamento de híbridos comerciais de milho nas regiões nordeste e sudeste do Estado do Pará.
Provedor de dados: 14
Autores: SOUZA, F. R. S. de; CORREA, L. A.; GAMA, E. E. G. e; PEREIRA, C. A.; EL-HUSNY, J. C.
bitstream/item/57622/1/CPATU-PA214.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Paragominas; Pará; Brasil; Maize; Production; Variety; Yield; Environmental conditions.; Condição Ambiental; Milho; Produtividade; Produção; Variedade.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376243

Borrachas naturais brasileiras III. Borracha de mangabeira.
Provedor de dados: 14
Autores: WISNIEWSKI, A.; MELO, C. F. M. de.
bitstream/item/55272/1/cpatu-doc-8.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Mangabeira; Borracha natural; Extração do latex; Brasil; Production; Exportation; Natural rubber; Analysis; Yield; Latex extraction.; Análise; Coagulação; Exportação; Hancornia Speciosa; Produtividade; Produção; Tecnologia.; Coagulation; Technology.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/388000

Minimilho: efeito de densidades de plantio e cultivares na produção e em algumas características da planta de milho.
Provedor de dados: 14
Autores: PEREIRA FILHO, I. A.; GAMA, E. E. G. e; CRUZ, J. C.
bitstream/item/30783/1/Pesq.And.-23.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Minimilho; Densidade; Variedades; Sete Lagoas; Minas Gerais; Brasil; Babycorn; Production; Yield; Variation.; Plantio; Produção; Rendimento; Zea Mays.; Density; Brazil; Planting.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/478861

Comportamento e variabilidade genética do guaranazeiro em Altamira-Pará.
Provedor de dados: 14
Autores: KATO, O. R.; KATO, M. do S. A.; KALIL FILHO, A. N.
bitstream/item/57867/1/Altamira-CirTec2.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Cultivo; Altamira; Pará; Brasil; Cultivation; Yield; Genetic.; Genética; Guaraná; Melhoramento; Paullinia Cupana; Produtividade.; Amazonia; Breeding.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383439

CULTURA da cana de açúcar.
Provedor de dados: 14
bitstream/item/146498/1/CANA-ACUCAR.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cana-de-açúcar; Cultivo; Controle; Sugar cane; Cultivation; Plantation date; Fertilizer; Spacing; Cultural practices; Harvest; Yield; Pest; Disease; Control.; Adubação; Clima; Colheita; Espaçamento; Época de Plantio; Doença; Praga; Pratica Cultural; Produtividade; Solo.; Climate; Soil.
Ano: 1973
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375990

Influência do esterco de curral e da calagem na produção de feijão Vigna (Cow-pea) em latosolo amarelo, da região de Belém.
Provedor de dados: 14
Autores: PONTE, N. T. da; LIBONATI, V. F.
bitstream/item/143169/1/CIRCULAR-9-ABRIL-1964.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Adubação orgânica; Caupi; Belém; Pará; Brasil; Organic fertilizer; Cowpea; Yellow latossol; Yield; Manure.; Calagem; Esterco; Latossolo Amarelo; Produtividade.; Amazonia; Liming.
Ano: 1964
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376222

Indicações para o cultivo do amendoim.
Provedor de dados: 14
Autores: SANTOS, A. I. M. dos; CONDURÚ, J. M. P.
bitstream/item/70905/1/IPEAN-Comunicado30.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Zona leste; Pará; Brasil; Peanut; Cultivation; Spacing; Plantation date; Fertilizer; Yield; Harvest; Cultural practices.; Amendoim; Adubação; Colheita; Época de Plantio; Espaçamento; Produtividade.; Pratica Cultural; Amazonia.
Ano: 1972
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376311

Variabilidade genética e correlações entre o rendimento e seus componentes em caupi (Vigna unguiculata (L.) Walp.) na região Amazônica.
Provedor de dados: 14
Autores: BARRIGA, R. H. M. P.; OLIVEIRA, A. F. F. de.
bitstream/item/31909/1/CPATU-BP38.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Caupi; Variabilidade genetica; Capitão Poço; Pará; Brasil; Cowpea; Yield; Genetical variability.; Produtividade; Vigna Unguiculata.; Amazonia.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381148

Efeito de diferentes materiais de cobertura morta em pimenta-do-reino.
Provedor de dados: 14
Autores: KATO, O. R.; KATO, M. do S. A.; ALBUQUERQUE, F. C. de; KATO, A. K.
bitstream/item/57406/1/Altamira-ComTec10.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Pimenta-do-reino; Palha de capim; Yield; Scobs.; Casca de Arroz; Cobertura Morta; Produtividade; Serragem; Solo.; Black pepper; Mulching; Soil.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383428

CNPA G3: nova opção de gergelim para a região do Distrito Federal.
Provedor de dados: 14
Autores: AMABILE, R. F.; FARIAS NETO, A. L. de; SPEHAR, C. R.; ARRIEL, N. H. C.; BELTRAO, N. E. de M.
bitstream/CPAC-2010/20764/1/comtec-43.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cultivar CNPA G3; Distrito Federal; Brasil; Sesame; Mass selection; Yield; Cultura: Gergelim.; Cerrado; Gergelim; Produção; Sesamum Indicum.; Brazil; Varieties.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/564314

Comportamento das espécies florestais estabelecidas nos Sistemas 2, 3 e 4.
Provedor de dados: 14
Autores: LIMA, R. M. B. de.
No campo experimental do CPAA foram plantadas algumas especies florestais como componentes dos sistemas: II- urucum x castanha-do-brasil x cupuacu x pupunha; III- parica x seringueira x coqueiro x citros; IV- seringueira x andiroba x mogno x parica, utilizando-se nas entrelinhas mandioca e pueraria como cobertura de solo (Sistema II); mandioca, milho, caupi e pueraria como cobertura (Sistema III), ambos sistemas recebendo adubacao recomendada e inoculacao com micorriza. Os tratamentos foram distribuidos em blocos ao acaso com cinco repeticoes. As plantas, nos diferentes sistemas, foram avaliadas a cada seis meses no primeiro ano, e, a partir do segundo ano, em intervalo de doze meses, quanto a altura total (m), diametro a altura do peito-DAP (cm) e...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Agrofloresta; Brasil; Amazonas; Agroforesty; Growth; Yield; Bertholletia Excelsa; Carapa Guianensis; Crescimento; Cultivo Multiplo; Essência Florestal; Hevea Brasiliensis; Performance; Schizolobium Amazonicum; Swietenia Macrophylla; Forest trees; Multiple cropping.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667455

Aplicação sistemática de defensivos na produção de sementes de caupi.
Provedor de dados: 14
Autores: FIGUEIREDO, F. J. C.; CARVALHO, J. E. U. de; FRAZÃO, D. A. C.
bitstream/item/40985/1/Boletim-Pesquisa-71-CPATU.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Caupi; Campo Experimental de Tracuateua; Braganca; Pará; Brasil; Cowpea; Pulverization; Infestation; Yield; Insecticide; Fungicide.; Fungicida; Infestação; Inseticida; Germinação; Produtividade; Pulverização; Vigna Unguiculata.; Amazonia; Germination; Vigor.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383610

Sistemas de plantio e produtividade do capim-elefante (Pennisetum purpureum).
Provedor de dados: 14
Autores: SIMÃO NETO, M.; VEIGA, J. B. da; SERRÃO, E. A. S.; GONÇALVES, C. A.; DUTRA, S.; UCHÔA, R. S.
bitstream/item/34010/1/CPATU-CirTec53.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Capim-elefante; Propagacao; Planta forrrageira; Grass elephant; Yield; Propagation; Forage crop.; Gramínea; Pennisetum Purpureum; Produtividade.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383675

Comparação de rendimento entre frutos de duas variedades de cupuaçuzeiro (Theobroma grandiflorum, Schum).
Provedor de dados: 14
Autores: SANTOS, A. I. M. dos; CONDURÚ, J. M. P.
bitstream/item/70907/1/IPEAN-Comunicado31.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivar; Brasil; Variety; Yield; Fruit.; Cupuaçu; Fruta; Produtividade; Theobroma Grandiflorum.; Amazonia.
Ano: 1972
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376308

Importância do búfalo para a pecuária brasileira.
Provedor de dados: 14
Autores: NASCIMENTO, C. N. B. do; CARVALHO, L. O. D. de M.; LOURENCO JUNIOR, J. de B.
População mundial de búfalos; Búfalos no Brasil; Efetivo bubalino; Bubalinocultura; Características do búfalo; Adaptabilidade; Utilização de forragem; Longevidade; Reprodutividade; Produção de leite; Produção de carne; Animal de trabalho
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Bubalino; Distribuição; Característica; Composição corporal; Brasil; Buffalo; Distribution; Importation; Yield; Feed; Characteristics; Production; Weigt gain; Corporal composition.; Alimentação; Carne; Ganho de Peso; Importação; Leite; População; Produtividade; Produção.; Meat; Population.; Milk.
Ano: 1979
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/374303

Uniformidade de distribuição de plantas em lavouras de soja.
Provedor de dados: 14
Autores: TORRES, E.; GARCIA, A.
bitstream/item/53939/1/48.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Distribuicao espacial; Brasil; Parana; Soybean; Production; Yield; Cultural practice.; Produtividade; Pratica Cultural; Soja.; Brazil.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445648

Diferenças entre o Pseudocereal Chenopodium quinoa Wild. e a planta daninha Chenopodium album L., Chenopodiaceae.
Provedor de dados: 14
Autores: SPEHAR, C. R.; SANTOS, R. L. B.; NASSER, L. C. B.
bitstream/CPAC-2010/23956/1/comtec-61.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Caracteristica agronomica; Chromosome; Adaptability; Cultivar; Yield; Caracteristica; Planta invasora; Cultura: Quinoa.; Chenopodium Quinoa; Cerrado; Quinoa.; Chenopodium album; Dormancy; Weeds.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/564521

Cultivo do chuchu.
Provedor de dados: 14
Autores: LOPES, J. F.; OLIVEIRA, C. A. de S.; SOUZA, A. F. de; BARBOSA, S.; CHARCHAR, J. M.; CASTOR, O. S.; MAKISHIMA, N.; COBBE, R. V.
bitstream/item/184877/1/digitalizar0107.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Cultivar; Controle; Manipulacao; Higienizacao; Classificacao; Coeficiente tecnico; Colletotrichum lagenarium; Leandria mamordicae; Chayote; Climate soil; Fertilization; Diseases; Control; Pest insects; Harvest; Productivity; Yield; Manipulation; Handling; Ácaro; Adubação; Broca; Chuchu; Clima; Colheita; Doença; Embalagem; Época de Plantio; Erysiphe Cichoracearum; Inseto; Irrigação; Praga; Produtividade; Sechium Edule; Sistema de Produção; Solo; Variedade; Cropping systems; Farming systems; Irrigation; Planting date; Soil; Varieties.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/769095

Efeito de níveis de calcário sobre a produção de alfafa (Medicago sativa L.) na região do Submédio São Francisco.
Provedor de dados: 14
Autores: D'OLIVEIRA, L. O. B.
Foi estudado o efeito de calcario em alfafa (medicago sativa L.), cultivar Africana, em Latossolo da regiao do Submedio Sao Francisco. O experimento foi conduzido na Estacao Experimental de Bebedouro, em Petrolina,PE. Os tratamentos consistiram de treze corte e os subtratamentos de quatro niveis de calcario: 0; 1,8; 3,6 e 5,4 t/ha, em um delineamento de blocos ao acaso, em parcelas subdivididas com quatro repeticoes. Os sucessivos cortes mensais provocaram queda de producao. O efeito benefico de um periodo de repouso e mostrado pela maior producao de 1,6 t/ha de materia seca obtida no setimo corte. Em relacao aos niveis de calcario, foi estimada uma equacao quadratica, onde se obteve uma producao maxima de 1,39 t/na de materia seca, correspondente a...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Brasil; Pernambuco; Submédio São Francisco; Lime level; Dry matter; Yield; Variety.; Alfafa; Irrigação; Calcário; Matéria Seca; Medicago Sativa; Produção.; Irrigation.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131860

A cultura do milho na Amazônia.
Provedor de dados: 14
Autores: PEREIRA, O. G.
bitstream/item/69744/1/IPEAN-Fitotecnia1.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Melhoramento genetico; Brasil; Maize; Cultivation; Genetic breeding; Cultural practices; Yield; Harvest.; Colheita; Milho; Pesquisa; Polinização; Pratica Cultural; Produtividade.; Plantio; Amazonia; Pollination; Planting; Research.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376203

Avaliação de cultivares de soja em Paragominas - Pará.
Provedor de dados: 14
Autores: EL-HUSNY, J. C.; ANDRADE, E. B. de; MEYER, M. C.
bitstream/item/60314/1/CPATU-PA196.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Característica agronômica; Paragominas; Pará; Brasil; Yield; Agronomic characteristics.; Comportamento de Variedade; Produtividade; Soja.; Amazonia; Soybeans; Variety trials.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375193

Resultados de pesquisa com arroz de sequeiro na Transamazônica, Pará - 1972/81.
Provedor de dados: 14
Autores: CARVALHO, E. J. M.; CORREA, J. R. V.; POLTRONIERI, L. S.
bitstream/item/66789/1/Altamira-Doc4.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Arroz de sequeiro; Cultivar; Transamazônica; Pará; Brasil; Upland rice; Yield; Fertilizer; Variety.; Adubação; Pesquisa; Produtividade.; Amazonia; Research.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383048

Sistema de cobertura morta utilizando cachos vazios de dendê em dendezais e sua economicidade.
Provedor de dados: 14
Autores: FURLAN JUNIOR, J.; TEIXEIRA, L. B.; OLIVEIRA, R. F. de.
bitstream/item/59300/1/CPATU-ComTec81.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Igarapé-Açu; Pará; Brasil; Oil palm; Costs; Yield; Bunch.; Cacho; Composição Química; Cobertura Morta; Dendê; Custo; Elaeis Guineensis; Produtividade.; Amazonia; Chemical composition; Mulching.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375265

Cultivares de arroz de sequeiro para o Território Federal de Roraima.
Provedor de dados: 14
Autores: MASCARENHAS, R. E. B.; CORDEIRO, A. C. C.; ALVES, A. A. C.
bitstream/item/33539/1/CPATU-CirTec18.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Arroz de sequeiro; Avaliacao; Cultivar; Roraima; Brasil; Upland rice; Valuation; Yield; Variety.; Produtividade.; Amazonia.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379477

Ovinocultura: princípios básicos para sua criação (Manejo sanitário).
Provedor de dados: 14
Autores: GIRARDI, J. L.
Tipo: Folhetos
Palavras-chave: Manejo sanitario; Yield; Sanitary management; Criação; Ovino; Sheep.
Ano: 1995
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/687524

Competição de cultivares de mandioca na Transamazônica - Pará.
Provedor de dados: 14
Autores: KATO, M. do S. A.; KATO, O. R.; OLIVEIRA, R. P. de.
bitstream/item/61329/1/Altamira-ComTec5.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cultivar; Terra roxa estruturada; Transamazônica; Altamira; Marabá; Itaituba; Pará; Brasil; Variety; Yield; Yellow latosol.; Latossolo Amarelo; Mandioca; Produtividade.; Amazonia; Cassava.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380660

Avaliação do desempenho do puruí (Alibertia edulis L. Rich) A. Rich) na região de Manaus, AM.
Provedor de dados: 14
Autores: SILVA, S. E. L. da; SOUZA, A. das G. C. de; CANTO, A. do C.
As mudas de purui produzidas atraves de sementes possuem caracteristicas diferentes entre si. Observou-se que 50% das plantas iniciaram a producao a partir do segundo ano apos o plantio, indicando boa precocidade. No terceiro ano, cerca de 70% das plantas produziram frutos, destacando-se uma planta que produziu frutos maiores e em quantidade superiores as demais, apresentando boas caracteristicas para ser multiplicada assexuadamente.
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Purui; Alibertia edulis; Desempenho; Brasil; Amazonas; Yield.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665439

Avaliação do comportamento de cultivares de feijão no município de Altamira, PA.
Provedor de dados: 14
Autores: OLIVEIRA, A. F. F. de; POLTRONIERI, L. S.
bitstream/item/57419/1/CPATU-ComTec64.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Avaliação; Cultivar; Altamira; Pará; Brasil; Bean; Valuation; Yield; Variety; Disease; Resistance.; Feijão; Doença; Fungo; Melhoramento; Mela; Produtividade; Resistência; Thanatephorus Cucumeris.; Amazonia; Fungi.; Breeding.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381243

Avaliação de cultivares de milho no município de Paragominas - Pará.
Provedor de dados: 14
Autores: SOUZA, F. R. S. de; GAMA, E. E. G. e; OLIVEIRA, M. R. C. de; CORREA, J. R. V.; EL-HUSNY, J. C.
bitstream/item/57743/1/CPATU-ComTec94.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cultivo; Paragominas; Pará; Maize; Cultivation; Production; Yield; Environmental conditions.; Condição Ambiental; Milho; Produtividade; Produção.; Amazonia.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376249

Ovinocultura: princípios básicos para sua criação (Instalações).
Provedor de dados: 14
Autores: GIRARDI, J. L.
Tipo: Folhetos
Palavras-chave: Instalacao; Yield; Criação; Ovino; Sheep.
Ano: 1995
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/687522

Cultivo intercalar de milho seguido de caupi num plantio de dendê.
Provedor de dados: 14
Autores: WERNIGERODE, A. G. zu S.; ANDRADE, E. B. de.
bitstream/item/40157/1/Circ-Tec-47-CPATU.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Caupi; Consorciacao; Cultivo; Desenvolvimento; Campo Experimental de Capitao Poco; Pará; Brasil; Maize; Cowpea; Oil palm; Consorciation; Cultivation; Yield; Development.; Dendê; Elaeis Guineensis; Milho; Produtividade; Zea Mays.; Vigna Unguiculata; Amazonia.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383381

Rendimento de graos em diferentes sistemas de preparo e manejo de solos.
Provedor de dados: 14
Autores: JASTER, F.; ELTZ, F. F. L.; FERNANDES, F. F.; MERTEN, G. H.; GAUDENCIO, C. de A.; OLIVEIRA, M. C. N. de.
Material e metodos: amostragem e avaliacao; Resultados e discussao: primeira etapa de 1978 ate 1986 - 17 cultivos; Segunda etapa: de 1987 ate 1990 - cultivos 18 a 23; Conclusoes e recomendacoes; Implicacoes praticas dos resultados experimentais.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Brasil; Soybean; Grain; Yield; Management.; Grão; Manejo; Rendimento; Solo.; Soja; Brazil; Soil.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445443

Castanhais nativos de Marabá - PA: fatores de depredação e bases para a sua preservação.
Provedor de dados: 14
Autores: KITAMURA, P. C.; MÜLLER, C. H.
bitstream/item/55270/1/CPATU-DOC-30.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Castanha-do-brasil; Extrativismo; Preservação; Marabá; Pará; Brasil; Brazil-nut; Economy; Production; Yield; Preservation.; Bertholletia Excelsa; Economia; Produtividade; Produção.; Amazonia.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381689

Fruteiras: abacaxizeiro, cajueiro, goiabeira, maracujazeiro, murucizeiro.
Provedor de dados: 14
Autores: CALZAVARA, B. B. G.
bitstream/item/166617/1/Culturas-da-amazonia-COMPLETO.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Muruci; Cultivar; Controle; Pará; Brasil; Fruit; Cultivation; Pineapple; Cashew-nut; Guava; Maracock; Yield; Variety; Plantation date; Spacing; Fertilizer; Disease; Control.; Adubação; Abacaxi; Caju; Doença; Época de Plantio; Espaçamento; Fruta; Goiaba; Maracujá; Peste; Produção; Produtividade; Praga; Solo.; Amazonia; Soil.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/856001

Comportamento de cultivares de caupi na região amazônica.
Provedor de dados: 14
Autores: OLIVEIRA, A. F. F. de; BARRIGA, R. H. M. P.; FIGUEIREDO, F. J. C.; SILVA, J. F. de A. F. da; PONTE, N. T. da.
bitstream/item/33769/1/CPATU-CirTec10.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Caupi; Cultivar; Adubacao organica; Acailandia; Macapa; Santarem; Capitao Poco; Ourem; Marapanim; Braganca; Capanema; Igarape-Acu; Belem; Pará; Brasil; Cowpea; Yield; Variety; Organic fertilizer.; Melhoramento; Produtividade; Vigna Unguiculata.; Amazonia; Breeding.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/378022

Produtividade e qualidade fisiológica de sementes de caupi colhidas em diferentes épocas.
Provedor de dados: 14
Autores: FIGUEIREDO, F. J. C.; FRAZÃO, D. A. C.; OLIVEIRA, R. P. de; CARVALHO, J. E. U. de.
bitstream/item/40155/1/Circ-Tec-50-CPATU.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Caupi; Produtivadade; IPEAN-V-69; Campo Experimental de Tracuateua; Bragança; Pará; Brasil; Cowpea; Seed; Yield; Quality.; Época de Colheita; Fisiologia; Germinação; Semente; Qualidade; Vigna Unguiculata.; Amazonia; Harvest date; Germination; Physiology.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383612

Ovinocultura: princípios básicos para sua criação (Raça e manejo reprodutivo).
Provedor de dados: 14
Autores: GIRARDI, J. L.
Tipo: Folhetos
Palavras-chave: Yield; Management; Criação; Manejo; Ovino; Raça; Reprodução; Reproduction; Sheep.
Ano: 1995
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/687523

Influência de adubação NPK no milho, em terra roxa estruturada (Altamira - zona do rio Xingu).
Provedor de dados: 14
Autores: CRUZ, E. de S.; SOUSA, G. F. de; BASTOS, J. B.
bitstream/item/162581/1/FL01758-.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Terra roxa estruturada; Zona do Xingu; Altamira; Pará; Brasil; Maize; Fertilizer; Yield; Structured brown soil.; Adubação; Milho; Produtividade.; Amazonia.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375796

A cana-de-açúcar na Transamazônica, PA: resultados de 8 anos de pesquisa, 1974/82.
Provedor de dados: 14
Autores: POLTRONIERI, L. S.; ROCHA, A. C. P. N. da; COSTA, M. S.
bitstream/item/57751/1/Altamira-Doc5.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cana-de-açúcar; Cultivar; Sacharum officinarum; Transamazônica; Pará; Brasil; Sugar cane; Fertilizer; Yield; Variety.; Adubação; Fósforo; Pesquisa; Produtividade.; Amazonia; Phosphorus; Research.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383049

Comportamento de germoplasma de pimenta-do-reino em relação a produtividade e a resistência a doença em regiões da Amazônia brasileira.
Provedor de dados: 14
Autores: ALBUQUERQUE, F. C. de; DUARTE, M. de L. R.; NUNES, A. M. L.; STEIN, R. L. B.; POLTRONIERI, M. C.; OLIVEIRA, R. P. de; ENDO, T.
bitstream/item/67074/1/CPATU-Doc90P15.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Pimenta-do-reino; Enxertia; Brasil; Yield; Disease; Grafting.; Doença; Germoplasma; Garfagem; Produtividade.; Piper Nigrum; Amazonia; Germplasm.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/395075

Nutrição mineral e produtividade de tomateiro pré-inoculadas com fungos micorrízicos arbusculares sob condições da Amazônia Oriental.
Provedor de dados: 14
Autores: YING, E. C.; MAKI, H. J.-I. O.; CHENG, S. S.
bitstream/item/57541/1/CPATU-PA194.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Absorcao de nutriente; Controle de doença; Belém; Pará; Brasil; Yield; Vesicular mijcorrhizae.; Inoculação; Micorriza; Produtividade; Tomate.; Amazonia; Disease control; Inoculation methods; Nutrient uptake; Tomatoes.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375195

Mandioca.
Provedor de dados: 14
Autores: ALBUQUERQUE, M. de.
Pesquisas do IPEAN. A cultura em grandes zonas agrícolas do estuário amazônico.
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Cultivar; Consorciação; Rotação; Classificação; Utilização; Brasil; Pará; Cultivation; Disease; Pest; Variety; Fertilizer; Rotation; Spacing; Plantation date; Yield; Production; Utilization.; Adubação; Botânica; Época de Plantio; Espaçamento; Doença; Mandioca; Pesquisa; Praga; Produtividade; Plantio; Produção; Tecnologia.; Amazonia; Classification; Cassava; Botany; Intercropping; Planting; Research; Technology.
Ano: 1970
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/387078

Arroz: determinação de melhores variedades de arroz de sequeiro para as condições ecológicas da região de Belém (latossolo amarelo-capoeira derrubada e queimada).
Provedor de dados: 14
Autores: PONTE, N. T. da.
bitstream/item/223707/1/Arroz.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Cultivar; Belem; Pará; Brasil; Variety; Yield; Arroz; Produtividade; Amazonia; Rice.
Ano: 1962
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376223

Irrigação suplementar com água salina: efeito no solo e na produtividade de feijão e sorgo.
Provedor de dados: 14
Autores: CORDEIRO, G. G.; VALDIVIESO SALAZAR, C. R.; SOARES, J. M.
Com o objetivo de estudar o potencial de uso das aguas subterraneas salinas provenientes de pocos profundos no cristalino do Nordeste do Brasil, pesquisou-se o alto teor de sais na irrigacao suplementar de feijao e sorgo no que diz respeito ao manejo e as limitacoes de uso.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Salty-water; Supplementary irrigation; Yield; Bean; Sorghum.; Irrigação; Água Salina; Feijão; Irrigação Suplementar; Sorgo; Solo.; Irrigation; Soil.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131826

Mandioca: resultados preliminares de pesquisa na Transamazônica - PA.
Provedor de dados: 14
Autores: KATO, M. do S. A.; KATO, O. R.
bitstream/item/66788/1/Altamira-Doc3.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cultivar; Transamazônica; Pará; Brasil; Yield; Variety.; Manihot Esculenta; Mandioca; Pesquisa; Produtividade.; Amazonia; Cassava; Research.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383047

Introdução e competição de cultivares de cana-de-açúcar (Saccharum officinarum L.) na região Transamazônica - Pará.
Provedor de dados: 14
Autores: POLTRONIERI, L. S.; COSTA, M. S.; ROCHA, A. C. P. N. da; OLIVEIRA, R. P. de.
bitstream/item/57572/1/Altamira-ComTec3.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cana-de-açúcar; Cultivar; Transamazônica; Pará; Brasil; Sugar cane; Variety; Yield; Saccharose.; Produtividade; Saccharum Officinarum.; Sacarose; Amazonia.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380663

Estudos com mandioca.
Provedor de dados: 14
Autores: ALBURQUERQUE, M. de.
bitstream/item/69200/1/IAN-Circular6-p14.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cutivar; Densidade; Cultivo; Variety; Yield; Spacing; Cultivation; Cost.; Custo; Espaçamento; Farinha Seca; Mandioca; Produtividade.; Cassava; Density.
Ano: 1962
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375627

Efeito da seleção de cultivares no rendimento dos mandiocais em zonas mandioqueiras do Pará.
Provedor de dados: 14
Autores: ALBUQUERQUE, M. de.
bitstream/item/81881/1/IPEAN-Com16.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivar; Pará; Brasil; Selection; Yield; Variety.; Mandioca; Produtividade; Seleção.; Amazonia; Cassava.
Ano: 1972
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376675

Dendê: problemas e perspectivas na Amazônia.
Provedor de dados: 14
Autores: MULLER, A. A.; VIEGAS, I. de J. M.; CELESTINO FILHO, P.; SOUZA, L. A. de; SILVA, H. M. e.
bitstream/item/57330/1/Belem-Doc13.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cultivo; Brasil; Oil palm; Production; Cultivation; Yield; Pest; Disease; Plantation.; Dendê; Doença; Óleo; Pesquisa; Produtividade; Praga; Plantio; Produção.; Amazonia; Research.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379302

Utilização de inoculante líquido solubilizador de fosfato formulado a base dos isolados de Bacillus megaterium (b119) e Bacillus subitilis (b2084) no plantio da cana-de-açúcar.
Provedor de dados: 14
Autores: CANÇADO, G. M. de A.; VASCONCELOS, J. C. S.; OLIVEIRA-PAIVA, C. A.; CHRISTOFOLETTI, D.; SEVERINO, F. J.; PINTO JUNIOR, A. S.; MEDEIROS, G. de; BARBOSA, L. A. F.; SPERANZA, E. A.; ANTUNES, J. F. G.
Resumo - O Brasil é o maior produtor mundial de cana-de-açúcar e para obter altos índices de produtividade combinada à prática do cultivo sustentável dos canaviais, constantemente os produtores buscam e adotam novas tecnologias que sejam não apenas eficientes no que se refere à produção e qualidade de produto, como também capazes de dirimir o impacto ambiental. No presente estudo, foi testado em lavouras de cana-de-açúcar, o uso associado do inoculante líquido formulado com os isolados Bacillus megaterium(b119) e Bacillus subitilis (b2084) com a adubação fosfatada, aplicados diretamente nos colmos no sulco de plantio. O objetivo foi ava-liar a eficácia do inoculante líquido comercial SolubPhos Cana® na cultura da cana-de-açúcar, em sistema de produção...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Bioinsumo; Solubilizador de fosfato; Fósforo-lábil; Biostimulants; Phosphate solubilizer; Labile phosphorus; Yield; Cana de Açúcar; Saccharum Officinarum; Produtividade; Bacillus megaterium; Bacillus subtilis; Sugarcane.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137862

Avaliação de cultivares de milho na Transamazônica - Pará.
Provedor de dados: 14
Autores: SOUZA, F. R. S. de; MOTA, M. G. da C.; BARRIGA, R. H. M. P.; OLIVEIRA, R. P. de.
bitstream/item/63090/1/Altamira-CirTec6.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Cultivar; Avaliação; Transamazônica; Pará; Brasil; Maize; Variety; Yield; Valuation.; Milho; Produtividade.; Amazonia.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383440

Análise econômica da aplicação de herbicidas na cultura da pimenta-do-reino no município de Altamira, PA.
Provedor de dados: 14
Autores: CARVALHO, R. de A.; HOEFLICH, V. A.; VIEIRA, G.; REIS, R. P.
bitstream/item/57561/1/Belem-Doc15.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Pimenta-do-reino; Controle; Altamira; Pará; Brasil; Black papper; Herbicide; Economy; Yield; Production; Control; Weed.; Economia; Erva Daninha; Herbicida; Piper Nigrum; Produtividade; Produção.; Amazonia.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379307

Fruteiras: abacaxizeiro, cajueiro, goiabeira, maracujazeiro, murucizeiro.
Provedor de dados: 14
Autores: CALZAVARA, B. B. G.
bitstream/item/166425/1/CulturasDaAmazonia.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Muruci; Cultivar; Controle; Pará; Brasil; Fruit; Cultivation; Pineapple; Cashew-nut; Guava; Maracock; Yield; Variety; Plantation date; Spacing; Fertilizer; Disease; Control.; Abacaxi; Adubação; Caju; Época de Plantio; Espaçamento; Fruta; Doença; Goiaba; Maracujá; Peste; Produtividade; Praga; Produção; Solo.; Amazonia; Soil.
Ano: 1970
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375743

Cultivares de arroz de sequeiro para o Território Federal do Amapá.
Provedor de dados: 14
Autores: MASCARENHAS, R. E. B.; FIGUEIRÊDO, F. J. C.
bitstream/item/57592/1/CPATU-ComTec29.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Arroz de sequeiro; Cultivar; Amapá; Brasil; Upland rice; Variety; Production; Yield; Selection.; Produtividade; Produção; Seleção.; Amazonia.
Ano: 1979
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376055

Feijão "cow-pea": primeiros resultados experimentais no IAN.
Provedor de dados: 14
Autores: PONTE, N. T. da.
bitstream/item/69201/1/IAN-Circular6-p2.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Caupi; Cultivar; Experimento; Brasil; Cowpea; Variety; Yield; Experimentation.; Análise Química; Produtividade.; Amazonia; Chemical analysis.
Ano: 1962
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375629

Pesquisas com feijão (Phaseolus vulgaris L.) e caupi (Vigna unguiculata (L.) Walp.) na região da Transamazônica: resultados alcançados 1975-1980.
Provedor de dados: 14
Autores: CORRÊA, J. R. V.
bitstream/item/57600/1/Altamira-Doc1.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Caupi; Cultivar; Rodovia Transamazonica; Pará; Brasil; Bean; Cowpea; Plantation date; Yield; Variety.; Época de Plantio; Feijão; Pesquisa; Phaseolus Vulgaris; Produtividade; Vigna Unguiculata.; Amazonia; Research.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381262

Etat de la Peche des Sparides du Golfe du Lion. Application de Deux Modeles de Gestion (Schaefer, 1957; Beverton et Holt, 1957) aux Stocks de Pagellus erythrinus et Boops boops.
Provedor de dados: 5
In the Gulf of Lion, only three species of Sparidae present a true economical interest : The pandora, the bogue and the gilt head bream. They totalize 90% of the catches of this family. The model of Schaefer is inapplicable to the pandora and bogue stocks and the author could not determine an optimal fishing effort for these two species. The important heterogeneity of size and equipment of the trawlers and the notable imprecision of the fishery statistics explain, perhaps, the inadequacies of this logistic model to this fishing. The author has defined the potentialities of the production of the pandora and bogue stock using the analytical model of Beverton and Holt. He verifies that an increase of the yield corresponds to a decrease of the fishing effort....
Tipo: Text
Palavras-chave: Boops boops; Pagellus erythrinus; Boops boops; Fishery statistics; Pagellus erythrinus; Yield; Fishery statistics; Fishing effort; Yield; Stock assessment; Fishing effort; Mathematical models; Stock assessment; Fishery management; Mathematical models.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/publication-1928.pdf

Relation of smoking parameters to the yield, colour and sensory quality of smoked Atlantic salmon (Salmo salar)
Provedor de dados: 5
Autores: Cardinal, Mireille; Knockaert, Camille; Torrissen, Ole; Sigurgisladottir, Sjofn; Morkore, Turid; Thomassen, Magny; Vallet, Jean-luc.
The relations between smoking parameters and the characteristics of salmon raw material were investigated with respect to yield, colour, flesh content of phenol and salt, and sensory properties. The fish studied were ocean ranched salmon harvested in Iceland in July 1998 and farmed salmon from Norway slaughtered in October 1998 and April 1999. Seven treatments were applied on fresh or frozen raw material combining dry or brine salting with cold smoking at 20 or 30 degreesC. Electrostatic smoking was tested on dry-salted salmon fillets. The results show a lower yield after filleting and trimming with ocean ranched fish. Although freezing had little effect on yield, total loss was slightly greater, especially for fish with low fat content. Sensory...
Tipo: Text
Palavras-chave: Quality parameters; Freezing; Salting; Yield; Smoking; Atlantic salmon.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/2001/publication-656.pdf

Intensive culture of the Manila clam (Ruditapes philippinarum) in marine ponds. The impact of rearing densities and feeding levels on growth rates and yields
Provedor de dados: 5
Autores: Baud, Jean-pierre; Haure, Joel; Bodoy, Alain.
Intensive ongrowing (from 28 mm to the commercial size, 35 mm) of the Manila clam Ruditapes philippinarum was studied in experimental raceways with a natural bottom of clay. The factors controlled were rearing density (100, 200, and 300 individuals/m2) and food concentration (34.0 and 68.1 µg.1-1 chlorophyll a). Food was produced from a batch culture of Skeletonema costatum in a large volume (50 m3), thanks to the fertile ground and saline water. Best results regarding final size were obtained in the vicinity of the inflow with a densilY of 100 individuals/m2. However it was a density of 300 individuals/m2 which appeared from the following results to be the optimal choice for intensive rearing: the survival rate was 84 %, the final biomass was 4 kg/m2 and...
Tipo: Text
Palavras-chave: Ruditapes philippinarum; Skeletonema costatum; Elevage intensif; Marais maritime; Croissance; Rendement; Ruditapes philippinarum; Skeletonema costatum; Intensive rearing; Marine pond; Growth rate; Yield.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00038/14950/12276.pdf

Relative importance of family, site, and field placement timing on survival, growth, and yield of hatchery-produced Pacific oyster spat (Crassostrea gigas)
Provedor de dados: 5
Autores: Degremont, Lionel; Bedier, Edouard; Soletchnik, Patrick; Ropert, Michel; Huvet, Arnaud; Moal, Jeanne; Samain, Jean-francois; Boudry, Pierre.
Summer mortality has been reported in the Pacific oyster, Crassostrea gigas, for many years in different parts of the world. The causes of this phenomenon are complex. The multidisciplinary program "MOREST", coordinated by IFREMER, was initiated to understand the causes of summer mortality of Crassostrea gigas juveniles in France and to reduce its impact on oyster production. Within this program, three successive groups of bi-parental families were bred in a hatchery in 2001 and placed in the field during summer in three sites (Ronce, Riviere d'Auray, and Baie des Veys). This paper reports the relative importance of family, site and field placement timing for three characters of major importance for oyster production: survival, growth, and yield. At the...
Tipo: Text
Palavras-chave: Juvenile; Crassostrea gigas; Oysters; Yield; Growth; Survival.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-1693.pdf

Analyse des captures des pêcheries marines et lagunaires d'Egypte en liaison avec la construction du haut barrage d'Assouan
Provedor de dados: 5
Autores: Bebars, Mi; Lasserre, G; Hoai, Tl.
Annually exploited communities from the Nile delta and two nearby lagoons (Manzalah and Edkou) were monitored from 1962 to 1989. The changes in community structure were analysed as a function of two events: fishing pressure growth (motorized fishing vessels) which increased by a factor of 19 between 1952 and 1962; and the construction of the Aswan Dam, which was built between 1965 and 1969, reducing the flow of the Nile by 90 %. Before the construction of the dam, increased sea fishing pressure led to a decline in landings from 33,832 tons in 1962 to 8,522 tons in 1969, but with no structural change in the exploited community. However, following completion of the dam in 1969, the community structure changed and a significant correlation was detected...
Tipo: Text
Palavras-chave: Impact; Aswan Dam; Yield; Fisheries; Diversity; Lagoon.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20406/18073.pdf

Study of Wool Characteristics in the Aranese Ovine Breed
Provedor de dados: 77
Autores: Parés,P.M; Jordana,J; Pérezgrovas,R.
To date, no ethnological study on the wool characteristics of the Spanish Aranese ovine breed has been published. Fifty three animals belonging to this breed are tested as fleece samples. Each sample is analyzed for fleece type and length, yield by isoalcohol scouring, fiber length for each kind of fiber, variation in fiber diameter, and proportions of non-medullated and medullated or kemp fibers. Fiber length appears shorter than that previously reported for the breed by other authors. Fleeces of the Aranese sheep breed can be described as square, simple, "semi-open" and short with a relatively high yield by isoalcohol scouring and low medullation levels, thus indicating good potential quality and greater suitability for potential processing than other...
Tipo: Journal article
Palavras-chave: Fiber diameter; Fleece; Kemp; Medullation; Sheep; Yield.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100021

Population dynamics and damage caused by the leafminer Liriomyza huidobrensis blanchard (Diptera: Agromyzidae), on seven potato processing varieties grown in temperate environment
Provedor de dados: 82
Autores: López,R; Carmona,D; Vincini,A M; Monterubbianesi,G; Caldiz,D.
The leafminer Liriomyza huidobrensis Blanchard is considered a key pest for potatoes in Argentina. Population dynamics and leaf damage caused by the leafminer on seven selected potato processing varieties were assessed at Balcarce during the 2002 and 2003 growing seasons. Adult population dynamic was monitored using yellow sticky traps, while leaf damage (punctures and mines) was assessed using a damage index scale from low to severe. Liriomyza huidobrensis adults were present throughout the growing season and the population increased along crop development. The same was true for all varieties regarding larval damage, being low on early crop stages and severe late in the season. Varieties were grouped in two different categories according to damage scale...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yield; Solanum tuberosum; Yellow sticky trap.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000100015

Weed suppression under the maize-soybean intercropping system
Provedor de dados: 19
Autores: PREMALAL, K. P. S. Bandula; GEMMA, Takuma; MIURA, Hideho; プレマラル, K. P. S. バンドゥラ; 源馬, 琢磨; 三浦, 秀穂.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: Dry matter production; Maize-soybean intercropping; Weed; Yield.
Ano: 1993
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3760

Recomendación de capturas biológicamente aceptables de anchoíta patagónica (Engraulis anchoita, 41º S-48º S) durante 2012
Provedor de dados: 20
Autores: Hansen, J.E.; Buratti, C.C.; Garciarena, A.D.
Advise on Biologically Allowable Catch (BAC) for Southern Argentine anchovy (Engraulis anchoita, 41° S-48° S) during 2012. To assess the evolution since 1990 and the current status of Argentine anchovy Southern stock, an Age Structured Population Model (ASPM) was used. Modeling of catches according to a four-month period pulses allowed to predict annual yields so as to get them close to the nominal catches officially recorded. Some independent indexes of stock abundance (eight acoustic estimates of total biomass and five estimates of spawning stock biomass obtained with the Daily Egg Production Method) and the proportion of individuals per age group assessed during the same cruises were used to calibrate the fitting. No stock-recruitment function but a...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Yield; Statistical models; Age composition; Clupeoid fisheries.
Ano: 2013
URL: http://hdl.handle.net/1834/5508

Obtención a escala piloto de un extracto de café
Provedor de dados: 20
Autores: Borges, P.; Ortega, A.; Roncal, E.; Rogert, E.
Se obtuvo un extracto de café, mediante una tecnología de extracción sólido-líquido con etanol a 36 %, agitación y a ebullición del disolvente. El rendimiento promedio del extracto, expresado en porcentaje de sólidos totales, fue 90,4 % y por su caracterización sensorial resultó de buena calidad. Además se desarrolló un aroma de café que presentó una excelente calidad y fue aplicado en helado con una dosis de 8 mL/kg de crema base.
Tipo: Journal Contribution
Palavras-chave: Data processing; Yield; Coffee; Coffee pulp; Flavourings.
Ano: 2008
URL: http://hdl.handle.net/1834/5019

Estratificación y estimación de los rendimientos de la flota de buques procesadores congeladores arrastreros.
Provedor de dados: 20
Autores: Bertolotti, M.I.; Hernandez, D.R.; Pagani, A.N.; Castañeda, M.F.
In order to better understand the behaviour of the trawler processing freezer fleet in the Argentine Sea, an analysis of yields and structural characteristics for the 1989-98 period was carried out. The relationship between structural variables and yield expressed in kilos per day was explained with a simplified asymptotic model. The fleet was divided into four homogeneous strata. Common hake is the target of stratum I and stratum II which are deeply affected by overfishing of the species. As of 1993, in stratum III, common hake was replaced by other pelagic and demersal species, mainly hoki. In fleet stratum IV southern blue whiting and hoki were caught. Catches of the latter increased during the last three years.
Tipo: Book Section
Palavras-chave: Trawlers; Factory ships; Yield; Mathematical models; Fish catch statistics; Trawlers; Factory ships; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_7880; Http://aims.fao.org/aos/agrovoc/c_10732; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2001
URL: http://hdl.handle.net/1834/2584

Estratificación y análisis de la eficacia y la eficiencia de la flota costera de pequeña escala perteneciente a la Sociedad de Patrones Pescadores del puerto de Mar del Plata.
Provedor de dados: 20
Autores: Errazti, E.; Hernandez, D.R.; Bertolotti, M.I.; Buono, J.J.
This chapter includes an economic analysis of the small scale fleet of the Mar del Plata harbour, Buenos Aires Province, Argentina. The original study was carried out at the request of the Skippers Fisheries Society to find out the relative efficacy and efficiency of homogeneous groups of associated vessels. Based on the information available, to tune the observed data, assess the relative efficacy and estimate the relative economic efficiency of the fleet, an ad hoc model was designed. Length, gross registered tonnage, engine power and number of crew members were considered and analyzed as structural variables for 1995, 1996 and 1997. No changes in variables for the period were observed so, the efficacy and efficiency analysis was carried out for the year...
Tipo: Book Section
Palavras-chave: Fishing vessels; Fishery economics; Coastal fisheries; Yield; Mathematical models; Fishing vessels; Coastal fisheries; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2001
URL: http://hdl.handle.net/1834/2585

Report of the INIDEP working group on assessment of hake (Merluccius hubbsi) north of 48° S (Southwest Atlantic Ocean)
Provedor de dados: 20
Autores: Bezzi, S.I.; Cañete, G.R.; Pérez, M.; Renzi, M.A.; Lassen, H.
The assessment covers hake between 34° and 48°S (Argentina and Uruguay), excluding Golfo San Matías. Total international landings and Argentine catch-at-age and effort data available for the 1983-1991 period allowed an analytical assessment. Tunning of the VPA was made using Laurec-Shepherd analysis and Extended Survivor analysis. The results of these analysis are congruent with the information about the state of the stock. VPA biomass estimates are aound 2.1 and 2.7 mill. Tonnes, which are similar to those calculated through surveys. The Spawning Stock Biomass estimated for 1991 is considered to be within limits where the stock shows stable recruitment. At the present effort level, yield and Spawning Stock Biomass appear to remain stable. Management...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Yield; Fishery management; Stock assessment; Fishery management; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026.
Ano: 1994
URL: http://hdl.handle.net/1834/2554

Algunos aspectos de la biología pesquera del langostino (Pleoticus muelleri)de la Bahía Blanca y un análisis del desembarco comercial del período 1955-1979
Provedor de dados: 20
Autores: Bertuche, D.A.; Wyngaard, J.G.
This study was carried out in order to get somme knowledge on the characteristics of the fisheries of the shrimp Pleoticus muelleri in the area of Bahia Blanca during 1980-1981. Monthly samplings in the fishing area were performed, and the landing data from 1955 to 1979 were analized.
Tipo: Journal Contribution
Palavras-chave: Size distribution; Growth curves; Length-weight relationships; Landing statistics; Yield; Shrimp culture.
Ano: 1982
URL: http://hdl.handle.net/1834/2053

Estratificación de la flota industrial de buques fresqueros y estimación de los rendimientos
Provedor de dados: 20
Autores: Bertolotti, M.I.; Pagani, A.N.; Hernandez, D.R.; Buono, J.J.
In order to increase knowledge about the ice chilling fleet and to explain the relationship between structural variables and yields, a simplified model was developed. The fleet was classified in three homogeneous strata. Stratum I includes the smallest ships, with a catch composition equal to that of the large coastal fishing vessels. The stratum yields decreased in 1997 and 1998. Strata II and III have common hake as the main target of catches. Yields of those strata showed a continuous decrease as of 1994/1995. Therefore, the species was replaced by other fish originally caught by other fleets. These two last strata are more vulnerable to overfishing of traditional coastal and demersal fisheries.
Tipo: Book Section
Palavras-chave: Fishery economics; Overfishing; Fish catch statistics; Yield; Fishing vessels; Overfishing; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_34068; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 2001
URL: http://hdl.handle.net/1834/2586

Ommastrephes bartramii: a potential target for the squid fishery in the Southwest Atlantic
Provedor de dados: 20
Autores: Brunetti, N.E.; Ivanovic, M.L.
Six exploratory cruises on board of the Japanese RV "Shinko Maru N°3" were carried out between 1997 and 2002 to obtain data on red squid (Ommastrephes bartramii)in the oceanic area of the SW Atlantic off Argentina and Uruguay (33° S-42° S/43° W-55° W). Between 10 and 32 jigging stations were performed each year during the night at depths of 80-200 m. Positive catches were registered in the whole area investigated with yields ranging between 0.01 and 2.03 kg/ (hour*line)and 0.001-2.26 individuals/(hour*line). Total catches oscilated between 1,426 kg in 2002 and 2,825 kg in 2000 and sea surface temperature at the fishing stations between 7.5° C and 24.5° C. Yields higher than 1 individual/ (hour*line)were registered at surface temperatures of 22° C-24° C....
Tipo: Journal Contribution
Palavras-chave: Cephalopod fisheries; Fishery surveys; Yield; Exploratory fishing; Catch/effort; Abundance; Geographical distribution; Exploratory fishing; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_2759; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2004
URL: http://hdl.handle.net/1834/1504

Efectos del filtrado de datos sobre la estimación de la tendencia de los índices de abundancia de polaca (Micromesistius australis)
Provedor de dados: 20
Autores: Cordo, H.D.
Catch per unit of effort (CPUE)analysis of the Argentine surimi fleet is a routine work to estimate abundance indices of southern blue whiting Micromesistius australis. Several analysis of this fishery suggest that, as of the years when intensive fishing by foreign and national fleets started, the resource has suffered a marked decline. When calculating the CPUE it is common practice to take into acount only trips and fishing operations with high catches of the target species fishing operations directed to other species are not considered to avoid underestimations. Therefore, in order to include a percentage of catch of the analyzed species higher than a subjective value, available data are filtered. However, because only operations with high yield are...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Yield; Commercial fishing; Overfishing; Stock assessment; Stock assessment; Overfishing.
Ano: 2002
URL: http://hdl.handle.net/1834/1584

Síntesis de las evaluaciones y sugerencias de manejo efectuadas sobre el recurso merluza (Merluccius hubbsi) entre el año 1986 y mayo de 1997.
Provedor de dados: 20
Autores: Bezzi, S.I.
Hake (Merluccius hubbsi) stock assessments and management recommendations made as of 1986 for the Argentine Sea, are summarized. The surplus production models used allowed to diagnose an overdimensioned fleet and to establish that, as of 1983, population densities were lower than the optimum values. In 1990 it was mentioned that total landings exceeded the Maximum Sustainable Yield and that the fishing effort was above the optimum exploitation level. The Virtual Population Analysis was first applied in 1993 and, for the 1986-1991 period, a 25. increase in fishing mortality, significant reductions of total and reproductive biomasses and a first catch length of 25 cm were detected. Besides, proposals were made to enhance accuracy of future assessments. In...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishery management; Yield; Overfishing; Risks; Stock assessment; Fishery management; Overfishing; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_34068.
Ano: 2000
URL: http://hdl.handle.net/1834/2533

Review and research plan on the stock structure of yellowfin tuna (Thunnus albacares) and bigeye tuna (Thunnus obesus) in the Indian Ocean
Provedor de dados: 20
Autores: Nishida, T.; Chow, S.; Grewe, P.
Yellowfin and bigeye tuna are the most important tuna species in the Indian Ocean, this paper reviews the stock structure of these two species and describes research plans based on the review.
Tipo: Proceedings Paper
Palavras-chave: Tuna fisheries; Fishery management; Yield.
Ano: 1998
URL: http://hdl.handle.net/1834/59

Estado de situación de los recursos pesqueros del Golfo San Matías, sus pesquerías, especies asociadas y ambiente: informe ad hoc para la evaluación preliminar de las pesquerías marinas de Río Negro con vistas a la certificación de su sustentabilidad
Provedor de dados: 20
Autores: Coller, M.; Osovnikar, P.; Narvarte, M.; Perier, R.; González, R.A.; Di Giácomo, E.; Morsan, E.M.; Braicovich, P.; Curtolo, L.; Ocampo, M.
Se realiza una sinopsis del estado de situación de los recursos pesqueros del Golfo San Matías, de sus pesquerías y especies asociadas a las mismas y del ecosistema marino. El objetivo de este informe es presentar información histórica y actualizada sobre los recursos pesqueros y las pesquerías marinas de Río Negro, a los fines de su empleo como guía de análisis para la evaluación de las mismas con vistas a la potencial certificación de una gestión sustentable de las mismas a partir de los estándares del Marine Stewardship Council (MSC). Se presenta información sobre la organización y estructura del sector institucional y del marco legal en el que se desarrolla la actividad. Se desarrolla una caracterización de las pesquerías a partir de diferentes...
Tipo: Report
Palavras-chave: Fishery resources; Fishery management; Clam fisheries; Coastal fisheries; Biodiversity; Environments; Associated species; Yield; Potential yield; Fishery regulations; Certification; Standards; Sustainability; Fishing fleet; Fishery management; Certification; Fishery resources; Coastal fisheries; Biodiversity; Sustainability.
Ano: 2004
URL: http://hdl.handle.net/1834/3719

Aplicación de un modelo dinámico de biomasa para evaluar el efectivo sur de merluza. Período 1986-1998
Provedor de dados: 20
Autores: Irusta, G.; Hernandez, D.R.
The status of hake (Merluccius hubbsi) resource south of 41°S in the Argentine Sea was evaluated with the Biomass Dynamic Model of Pella and Tomlinson. Results indicate that the population was overexploited and in a low biological production level (B99 BMSY1 because, as of 1998, catches always exceeded the surplus production corresponding to each year and the (MSY) Maximum Sustainable Yield. In 1993 increase of landings accelerated declination of biomass. For 1999 the MSY was estimated at 244,773 t and the replacement catch at 147,389 t. Landings corresponding to 1998 surpassed the MSY in 145,000 t and the replacement catch in 242,611 t.
Tipo: Journal Contribution
Palavras-chave: Gadoid fisheries; Stock assessment; Overfishing; Biomass; Yield; Stock assessment; Biomass; Overfishing; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_34068.
Ano: 2003
URL: http://hdl.handle.net/1834/2425

Estimación del nivel óptimo de mortalidad por pesca y riesgo de sobreexplotación de la castañeta (Cheilodactylus bergi)
Provedor de dados: 20
Autores: Wöhler, O.C.; Cordo, H.D.
Patagonian scallop (Zygochlamys patagonica King &amp; Broderip, 1832): A new fishery in the Argentine continental shelf. Yield-per-recruit model was applied to the stock of castañeta (Cheilodactylus bergi)in the Argentine-Uruguayan Common Fishing Zone (Southwest Atlantic, among 34° and 39°30' S), in order to estimate the range of F0.1 values resulting from the uncertainty in the parameters of the model. Simulations with variations in natural mortality and recruitment were carried out, in order to estimate the risk of overfishing associated with different fishing mortality levels. The criterion that spawning stock biomass be mantained over 35. of its unexploited level was adopted. For an optimum age of first capture of 4 years, the range of calculated F0.1...
Tipo: Journal Contribution
Palavras-chave: Fishing mortality; Overfishing; Biomass; Yield; Biomass; Overfishing; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_34068.
Ano: 1999
URL: http://hdl.handle.net/1834/1873

Flota pesquera Argentina. Evolucion 1960-1998 con una actualizacion al 2000.
Provedor de dados: 20
Autores: Bertolotti, M.I.; Verazay, G.A.; Pagani, A.N.; Errazti, E.; Buono, J.J.
The analysis of the Argentine fishing fleet (SW Atlantic) evolution as of 1960 allows to explain the major causes of expansion, the crisis in the fisheries and the structural changes of the fleet during the 90's. Different fleet classification criteria focused on fishing capacity, fish landing composition, yields and productivity indices are described. The expansion cycles were associated to the incorporation of fishing vessels, while the 1960-1989 crisis originated in domestic and international economic crisis and changes in the strategy pattern of the fishing countries. The latter was related to overfishing of traditional coastal and demersal fisheries and to the full exploitation of resources such as squid, blue whiting and toothfish incorporated to the...
Tipo: Book Section
Palavras-chave: Fishing vessels; Fishery economics; Fishing vessels statistics; Overfishing; Landing statistics; Catch/effort; Yield; Fishing vessels; Overfishing; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_34068.
Ano: 2001
URL: http://hdl.handle.net/1834/2587

Evaluación del abadejo (Genypterus blacodes) en el Atlántico Sudoccidental por medio de modelos de producción dinámicos.
Provedor de dados: 20
Autores: Cordo, H.D.
Two dynamic production models were applied to assess the status of ling Genypterus blacodes stock in the SW Atlantic. The simplest (biomass dynamic model)and a more complex one (structured production model) were fitted with commercial CPUEs as abundance indices. Ling is one of the most important demersal fishes in Argentine waters. It is a demersal fish found between 35°and 55°S that shows the highest concentration in summer, between 42°and 48°S. In winter, schools disperse over the whole range of distribution. Argentine ling fishery started developing in 1986 when catches surpassed 15000 mt/year to stabilize, in recent years, at around 23000 mt/year. The species is caught mainly as by-catch by trawlers with bottom net that direct their effort to hake...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Catch/effort; Mathematical models; Yield; Stock assessment; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2001
URL: http://hdl.handle.net/1834/1869

Estudios sobre la factibilidad de una pesquerÍa artesanal con palangres en los golfos y costa de la provincia del Chubut, Argentina
Provedor de dados: 20
Autores: Elias, I.; Pereiro, R.
Artisanal fishing activities  bivalve extraction through diving, hand-collection of octopuses and beach seine fishing  are currently the only ways to exploit the coastal resources inhabiting the Argentine Northern Patagonian gulfs  42°43°S from the SW Atlantic. These are time-restricted activities. Diving and hand-collection are limited by management and sanitary policies while resource variability and commercial demand limit beach fishing. The objective of this work was to test a productive alternative, i.e., the use of longlines to increase and diversify catches in order to improve commercialization, contribute to a rational management and alleviate the pressure put on the resources exploited at present. Results obtained indicate that profitability of...
Tipo: Journal Contribution
Palavras-chave: Artisanal fishing; Coastal fisheries; Longlining; Yield; Exploratory fishing; Exploratory fishing; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_2759; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2003
URL: http://hdl.handle.net/1834/2419

Efecto de diferentes densidades de siembra en el engorde de tilapia roja  (Oreochromis mossambicus x O. aureus) en jaulas colocadas en la bahía  de Casilda, Cuba
Provedor de dados: 20
Autores: Fraga, I.; Flores, E. R.; Reyes, R.; Llanes, Y.
Con el objetivo de evaluar el efecto sobres el crecimiento y la supervivencia, de diferentes densidades de siembra de tilapia  roja en jaulas de diferentes volúmenes (4, 6 y 16 m3) se desarrollaron tres ciclos de engorde en la bahía de Casilda, provincia  Sancti-Spíritus. La selección del sitio se realizó a partir de una red de cinco estaciones muestreadas en lluvia y seca para  determinar los parámetros físico, químicos, batimétricos y turbidez. Los alevines se adaptaron al agua de mar en tanques de  12 m3, con flujo de agua marina (1.4 - 2.8 L/segundo) durante 24 horas con supervivencia de 96%. Al emplear densidades de  73 y 184 alevines/m3 en jaulas de 6 m3, no se observaron diferencias significativas (p&gt; 0.05) en el crecimiento y  supervivencias...
Tipo: Journal Contribution
Palavras-chave: Food; Seawater; Stock density; Cages; Environmental impact; Yield.
Ano: 2012
URL: http://hdl.handle.net/1834/4334

Assessment of growth and yield performance of rubber tree clones of the IAC 500 series
Provedor de dados: 86
Autores: Gonçalves,Paulo de Souza; Scaloppi Júnior,Erivaldo José; Martins,Maria Alice; Moreno,Rogério Manoel Biagi; Branco,Roberto Botelho Ferraz; Gonçalves,Elaine Cristine Piffer.
The objective of this work was to evaluate the performance of 15 clones of the IAC 500 series of Hevea brasiliensis, developed at Instituto Agronômico (IAC), over a 12-year period, in the northwest region of São Paulo State, Brazil. The 15 new clones evaluated are primary clones obtained from selected ortets within half-sib progenies. The clone RRIM 600, of Malaysian origin, was used as the control. Dry rubber yield performance over a four-year period, mean girth at the tenth year, girth increment before and during tapping, thermal properties of the natural rubber produced and other characters of the laticiferous system were evaluated. Forty percent of the clones were superior in comparison to the control for yield. Clone IAC 500 recorded the highest yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Bark thickness; Brown bast; Vigor; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001200009

An update of new flood-irrigated rice cultivars in the SimulArroz model
Provedor de dados: 86
Autores: Ribas,Giovana Ghisleni; Streck,Nereu Augusto; Duarte Junior,Ary José; Ribeiro,Bruna San Martin Rolin; Pilecco,Isabela Bulegon; Rossato,Ioran Guedes; Richter,Gean Leonardo; Bexaira,Kelin Pribs; Pereira,Vladison Fogliato; Zanon,Alencar Junior.
Abstract: The objective of this work was to model, in the SimulArroz model, the three flood-irrigated rice (Oryza sativa) cultivars currently most grown in the state of Rio Grande do Sul, Brazil. The experiments to calibrate and validate the model were conducted in the municipalities of Cachoeirinha, Santa Maria, Uruguaiana, Santa Vitória do Palmar, and Cachoeira do Sul during four crop seasons. The number of leaves, phenology, aboveground dry matter biomass, and yield of each cultivar were evaluated. The results showed a slight overestimate of the R1, R4, and R9 stages; however, overall, the SimulArroz model had a good performance in simulating rice phenology for the three studied genotypes. Furthermore, the model had a reasonable accuracy in simulating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Mathematical model; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000101001

Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina
Provedor de dados: 86
Autores: Gonzalez,Norma; Eyherabide,Juan Jose; Barcelonna,Maria Ignacia; Gaspari,Alfredo; Sanmartino,Silvina.
Two trials were performed in Balcarce, Argentina (37° 45' LS; 58° 18' LW) during 1993-94, to assess the effect of eight herbicides applied individually or in tank mixtures, on nodule number, nodule dry weight, seed yield and N percent in seed in soybean Asgrow 3205, inoculated with Bradyrhizobium japonicum CB 1809. Individual herbicides and doses in kg ha-1 of a.i. were metribuzin (0.48), acetochlor (0.90), metolachlor (1), flumioxazin (0.075), trifluralin (0.96), imazaquin (0.20), imazethapyr (0.10) and chlorimuron ethyl (0.0125). The mixtures were metribuzin+acetochlor (0.48+0.9), flumioxazin+acetochlor (0.075+0.9), imazaquin+acetochlor (0.2+0.9), metribuzin+metolachlor (0.48+1.92), and flumioxazin+ metolachlor (0.075+1.92). A control treatment without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bradyrhizobium japonicum; Herbicides injury; Nitrogen fixation; Yield.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700008

Growth, yield, water and effluent quality in ponds with different management during tambaqui juvenile production
Provedor de dados: 86
Autores: Silva,Ana Maria Dias da; Gomes,Levy de Carvalho; Roubach,Rodrigo.
The objective of this work was to evaluate the effect of pond management on fish feed, growth, yield, survival, and water and effluent quality, during tambaqui (Colossoma macropomum) juvenile production. Fish were distributed in nine 600 m² earthen ponds, at a density of 8 fish per m²; the rearing period was 60 days. Three different pond management were applied: limed and fertilized (LimFer), limed (Lim), and natural (Nat). Fish were fed with a commercial ration containing 34% crude protein three times daily. There were no significant differences in fish growth or yield. Three main items found in tambaqui stomach were insect, zooplankton and ration, without a significant difference among treatments in proportion. Alkalinity, hardness, and CO2 were greater...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colossoma macropomum; Growth; Yield; Diet; Environmental impact.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000500017

Agronomical and molecular characterization of banana germplasm
Provedor de dados: 86
Autores: Mattos,Lorenna Alves; Amorim,Edson Perito; Amorim,Vanusia Batista de Oliveira; Cohen,Kelly de Oliveira; Ledo,Carlos Alberto da Silva; Silva,Sebastião de Oliveira e.
The objective of the present work was to characterize banana accessions from the Germplasm Bank at Embrapa Mandioca e Fruticultura Tropical (Brazil), using agronomical, physical and physicochemical characteristics of fruit and simple sequence repeats (SSR) markers. Twenty-six accessions were analyzed, in which high genetic variability was found, especially for the agronomical characters number of fruit and weight of bunch. Accessions with high contents of carotenoids (diploid 'Jaran'), polyphenols (triploid 'Caipira' and tetraploid 'Teparod') and vitamin C (diploid 'Tuugia' and an unknown triploid AAA) in the fruit were identified. Thirteen microsatellite primers revealed an average of 7.23 alleles, which showed high variability. A dendrogram was prepared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa; Functional properties; Fruit quality; Hybrids; Yield.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000200005

Heading of shoots and hand thinning of flowers and fruits on 'BRS Kampai' peach trees
Provedor de dados: 86
Autores: Oliveira,Paula Duarte de; Marodin,Gilmar Arduino Bettio; Almeida,Gustavo Klamer de; Gonzatto,Mateus Pereira; Darde,Daniel Chamorro.
Abstract: The objective of this work was to evaluate the effect of shoot heading and of hand thinning in different development stages of flowers and fruits on the fruit production and quality of 'BRS Kampai' peach (Prunus persica) trees. The experiment was performed during three crop years, under the conditions of the “Depressão Central” region in the state of Rio Grande do Sul, Brazil, and the treatments were: T1, heading of half of the mixed shoot; T2, heading of one third of the mixed shoot; T3, flower thinning in the pink bud stage; T4, thinning at full bloom; T5, thinning of fruit with 5 mm; T6, thinning of fruit with 20 mm; and T7, no thinning or heading (control). Fruit production and quality were evaluated. Plants with no thinning were more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Fruit quality; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001101006

Performance of 'Jaffa' sweet orange on different rootstocks for orchards in the Brazilian Northeast
Provedor de dados: 86
Autores: Teodoro,Adenir Vieira; Carvalho,Hélio Wilson Lemos de; Barros,Inácio de; Carvalho,Luciana Marques de; Martins,Carlos Roberto; Soares Filho,Walter dos Santos; Girardi,Eduardo Augusto; Passos,Orlando Sampaio.
Abstract: The objective of this work was to evaluate the effect of nine rootstocks on 'Jaffa' sweet orange (Citrus sinensis) for its vegetative, productive, and qualitative traits, and for its susceptibility to three pest mites (Eutetranychus banksi, Tetranychus mexicanus and Phyllocoptruta oleivora). The following parameters were evaluated: vegetative growth, yield, physiochemical characteristics of fruit, and density of pest mites. 'Sunki Tropical' mandarin conferred high cumulative yields whereas 'Orlando' tangelo and 'Rugoso Vermelho' lemon imparted bigger fruit with low brix, and less acidity to 'Jaffa'. Indio and 'Riverside' citrandarins induced more acid fruit of smaller sizes, as well as low-cumulated yields and canopy volumes. Also, the 'Cravo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Juice content; Yield; Phytophagous mites.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000102800

Agronomic performance of quinoa selected in the Brazilian Savannah
Provedor de dados: 86
Autores: Spehar,Carlos Roberto; Santos,Roberto Lorena de Barros.
Twenty six breeding lines, selected from individual plant progenies of hybrids among varieties Amarilla de Marangani, Blanca de Junín, Chewecca, Faro 4, Improved Baer, Kancolla, Real, and Salares-Roja, had their agronomic characters evaluated, in Planaltina, DF, Brazil (15º36'S and 47º12'W), 1,000 masl, in randomized complete blocks, on a Ferralsol, previously limed and fertilized. Grain yield was positively associated with plant height, inflorescence length and diameter, and plant cycle. Genetic gain can be attained by selection based in these characters for commercial production of quinoa in tropical regions.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chenopodium quinoa; Breeding line; Selection; Yield; Cerrado.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000600012

Performance of 'Valência' sweet orange grafted onto rootstocks in the state of Acre, Brazil
Provedor de dados: 86
Autores: Rodrigues,Maria Júlia da Silva; Andrade Neto,Romeu de Carvalho; Araújo Neto,Sebastião Elviro de; Soares Filho,Walter dos Santos; Girardi,Eduardo Augusto; Lessa,Lauro Saraiva; Almeida,Ueliton Oliveira de.
Abstract: The objective of this work was to select rootstocks, based on the agronomic characters and fruit quality of the 'Valência' orange tree. The evaluated rootstocks were: the 'Cleópatra' mandarin; the TSKFL x CTTR-013, LVK x LCR-038, TSKC x CTQT 1439-004, LVK x LVA-009, TSK x TRENG-256 ('Indio' citrandarin) hybrid genotypes; the 'Santa Cruz' Rangpur lime; and the TSKFL x CTC-25-002, and TSKC x CTSW-038 hybrids. The experiment was installed in 2010 and evaluated from 2013 to 2017. The parameters plant height, canopy volume, yield efficiency, scion:rootstock ratio, survival percentage, and drought tolerance were evaluated in 2017. The yield average of five harvests was estimated, as well as the annual production per plant and the accumulated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Poncirus trifoliata; Fruit quality; Rangpur lime; Western Amazon; Yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102704

Performance of 'Oneco' mandarin on six rootstocks in South Brazil
Provedor de dados: 86
Autores: Gonzatto,Mateus Pereira; Kovaleski,Alisson Pacheco; Brugnara,Eduardo Cesar; Weiler,Roberto Luis; Sartori,Ivar Antônio; Lima,Jurandir Gonçalves de; Bender,Renar João; Schwarz,Sergio Francisco.
The objective of this work was to assess the effect of six rootstocks on yield, fruit quality, and growth of 'Oneco' mandarin during the first seven harvesting seasons, in Butiá, Rio Grande do Sul State, Brazil. The rootstocks evaluated were: 'Swingle' citrumelo (Citrus paradisi × Poncirus trifoliata), 'Caipira' orange (C. sinensis), 'Troyer' citrange (C. sinensis × P. trifoliata), 'Rangpur' lime (C. limonia), 'Volkamer' lemon (C. volkameriana), and 'Flying Dragon' trifoliata orange (P. trifoliata var. monstrosa). Plants budded onto 'Flying Dragon' had the lowest vegetative development, which indicates the dwarfing characteristics of this rootstock, and had the highest mean production efficiency, despite low yield. Plants grafted on 'Volkamer' lemon and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus reticulata; Alternate bearing; Fruit quality; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000400010

Morphometric and allometric relations of cage-reared Iguaçu surubim
Provedor de dados: 86
Autores: Feiden,Aldi; Signor,Altevir; Boscolo,Wilson Rogério; Reidel,Adilson; Coldebella,Anderson; Signor,Arcangelo Augusto; Klein,Sidnei.
The objective of this work was to evaluate the morphometric and allometric relations of Iguaçu surubim (Steindachneridion melanodermatum) cultivated in net cages. One hundred and twenty specimens were cultivated at a density of 50 fish per square meter in three 6 m³ net cages. Fish were fed three times a day with commercial feed. Thirty fish were evaluated at 60, 120, 180, and 360 days of cultivation as to the variables: total body, head, clean trunk, viscera, skin, and fin weight; total, standard, and head length; and head and body height. The Iguaçu surubim shows later development of the clean trunk and early development of the other body parts.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Steindachneridion melanodermatun; Body weight; Development; Processing; Weight class; Yield.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800055

Influence of rootstocks and pruning times on yield and on nutrient content and extraction in 'Niagara Rosada' grapevine
Provedor de dados: 86
Autores: Tecchio,Marco Antonio; Moura,Mara Fernandes; Teixeira,Luiz Antonio Junqueira; Pires,Erasmo José Paioli; Leonel,Sarita.
The objective of this work was to evaluate the influence of rootstocks and pruning times on yield and on nutrient content and extraction by pruned branches and harvested bunches of 'Niagara Rosada' grapevine in subtropical climate. The rootstocks 'IAC 766', 'IAC 572', 'IAC 313', 'IAC 571-6', and '106-8 Mgt' were evaluated. Treatments consisted of a combination between five rootstocks and three pruning times. At pruning, fresh and dry matter mass of branches were evaluated to estimate biomass accumulation. At harvest, yield was estimated by weighing of bunches per plant. Branches and bunches were sampled at pruning and at harvest, respectively, for nutrient content analysis. Nutrient content and dry matter mass of branches and bunches were used to estimate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis labrusca; Vitis vinifera; Biomass accumulation; Mineral nutrition; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000500340

Influence of soil tillage and Phoma macdonaldii on sunflower (Helianthus annuus L.) yield and oil quality
Provedor de dados: 85
Autores: Mirleau-Thebaud,V; Scheiner,JD; Dayde,J.
Plant yield and oil content determine sunflower production. Those plant production determinants depend in turn on the plant-environment interaction. In the South West of France, there have been recent advances in soil tillage. To date, 35% of the soil surface dedicated to sunflower is cropped under a reduced tillage system. Major constraints to sunflower cropping are water stress and cryptogamic diseases. The second most important sunflower disease in the South West of France is premature ripening caused by Phoma macdonaldii. Aims of this work were to: 1) understand how these factors influence sunflower yield, and 2) quantify the fatty acid quality variation under reduced tillage and Phoma macdonaldii infection. Results showed that 1) soil tillage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids; Oil; Yield; Premature ripening; Phoma macdonaldii; Soil tillage.
Ano: 2011
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572011000200013

Morphological and genetic characteristics allow the identification of a collection of garlic cultivars in the North-Central region of Mexico
Provedor de dados: 85
Autores: Azuara Hern ández,L; Silos Espino,H; Perales Segovia,C; Gómez Leyva,JF; Alpuche Solís,AG; Macias Valdez,LM.
The objective of this study was to compare the yield and genetic relationships between two Perla garlic selections, obtained by indi­vidual selection of cloves, and commercial varieties and cultivars adapted to diverse regions of Mexico (which did not have a selection process). Varieties with fewer cloves showed higher yields. Coreano and California produced 20 ton/ha (fresh weight) and Perla selections between 17-19 ton/ha (fresh weight). Six primers of the series OPB were tested for genetic characteriza-tion and OPB-17 was selected. With the amplified DNA fragments, a binary matrix was generated; afterwards, a dissimilarity matrix and dendrogram were developed. High genetic diversity was found among all varieties, which were separated into two groups...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RAPDs; Allium sativum; Selection; Yield.
Ano: 2008
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572008000100007

Nitrate reductase activity, biomass, yield, and quality in cotton in response to nitrogen fertilization
Provedor de dados: 85
Autores: Hernández-Cruz,AE; Sánchez,E; Preciado-Rangel,P; García-Bañuelos,M L; Palomo-Gil,A; Espinoza-Banda,A.
In the production of cotton (Gossypium hirsutum L.), nitrogen fertilization is one of the most costly crop practices, but important to reach high yields. However, high nitrogen (N) content in plants does not always translate into a high fibre production. One way of assessing the efciency of the N fertilizer is through the enzymatic activity of the nitrate reductase (NR). This is a key enzyme in N assimilation, whose activity is regulated by a number of endogenous and exogenous factors that determine yield. The aim of this study was to assess the efect of N fertilization on yield, fibre quality, biomass, and NR enzymatic activity in vivo in the cotton variety Fiber Max 989. The evaluated application rates were 0, 50, 100, and 150 kg/ha of N, using urea as a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum L; Nitrogen assimilation; Yield.
Ano: 2015
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000200026

Selectivity of Herbicides to Cabbage (Brassica oleracea var. capitata)
Provedor de dados: 87
Autores: REIS,M.R.; MELO,C.A.D.; RAPOSO,T.P.; AQUINO,R.F.B.A.; AQUINO,L.A.
ABSTRACT The presence of weeds in commercial fields of cabbage may interfere directly and indirectly on yield and on the quality of the commercial product. Therefore, the satisfactory production depends on a successful control of weeds. Because of the limited availability of herbicides registered in Brazil for cabbage crop in addition to the lack of information in the literature, the objective of this work was to evaluate the selectivity of herbicides to cabbage. The herbicides S-metolachlor (1,740 and 768 g ha-1), oxyfluorfen (240 and 96 g ha-1), flumioxazin (40 and 40 g ha-1) clomazone (720 and 360 g ha-1) and oxyfluorfen + flumioxazin (240 + 20 and 96 + 20 g ha-1) were applied before and after transplant of seedlings, besides the S-metolachlor +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides tolerance; Weed management; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100226

Phytotoxic Effect of Aqueous Extracts of Different Plant Parts of Milkweed on Weeds and Growth and Yield of Wheat
Provedor de dados: 87
Autores: SHAH,R.H.; BALOCH,M.S.; ZUBAIR,M.; KHAN,E.A.
ABSTRACT: The present research work was undertaken to find out the phytotoxic effects of different concentrations of aqueous extracts of leaves, stems and root of milkweed (Calotropis procera) in the Agronomic Research Area of Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa (KPK), Pakistan during 2013-14 and 2014-15. The treatments consisted of different concentrations of aqueous leaf, stem and root extracts (10, 20, 30 and 40%) of milkweed, which were compared with tap water (control). The results showed that the reduction of all studied parameters, including weeds, growth and yield of wheat was proportional to the concentration of aqueous extracts of milkweed in use. The level of inhibition was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytotoxicity; Calotropis procera; Aqueous extracts; Weed density; Growth; Yield; Wheat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100279

Optimum Weed Control Method Increases the Yield of Kinnow by Improving the Physical Properties of Soil
Provedor de dados: 87
Autores: SAJID,M.; AHMAD,S.; JASKANI,M.J.; YASIN,M.
ABSTRACT: Going towards sustainable fruit culture, it is very important that soil fertility should maintain by adopting the proper weeds control and adding the organic matter. This research was carried out to identify the most suitable weed control method for Kinnow orchard. The plants of Kinnow at the age of 6 years grown under drip irrigation were selected. Weeds of orchard were managed by mulching (wood chip and black polyethylene), mechanical (cultivator and rotavator) and chemical (glyphosate) methods. Mechanical weed control was taken as control treatment. The plants where wood chip mulching was used for weed control showed maximum increase in shoot length (24.00 cm), chlorophyll contents (84.00 SPAD value) and yield (11.88 ton ha-1) followed by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Mulches; Glyphosate; Mechanical control; Soil physical properties; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100284

Nitrogen availability and glyphosate hormesis on white oat
Provedor de dados: 87
Autores: R.O. Silva,Diecson; A. Silva,Álvaro A.; D. Novello,Bruna; Rieder,Eduardo; M. Aguiar,Adalin C.; J. Basso,Claudir.
Abstract  Background:  The effect of low rates of glyphosate has been widely studied in several crops. Low nitrogen stress reduces carbohydrate synthesis and we hypothesize that hormesis from glyphosate occurs at low nitrogen availability.  Objective: To evaluate the effects of glyphosate hormesis at different levels of nitrogen on the growth and yield of white oat.  Methods: A two-factor factorial (2x7) was conducted in field testing at nitrogen levels (50 and 90 kg ha-1) and low rates of glyphosate rates (0 - 180 g a.e. ha-1). The glyphosate was applied at the second node already formed. The growth and yield were evaluated.  Results:  Plant height was not affected by the nitrogen levels. A low rate of glyphosate induced a plant height increase up of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa; Low rate; Herbicide; Growth stimulus; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100323

Use of growth retardants in wheat
Provedor de dados: 87
Autores: Espindula,M.C.; Rocha,V.S.; Grossi,J.A.S.; Souza,M.A.; Souza,L.T.; Favarato,L.F.
In general, lodging has been controlled by restricting nitrogen fertilizer application and/or using short cultivars. Growth retardants can also be used to solve this problem.The objective of this study was to evaluate the effect of rates and application times of three growth retardants on Pioneiro wheat cultivar. The trial was carried out in Viçosa-MG, from May to September 2005, in a factorial and hierarchical scheme, in a randomized block design with four replications and a control treatment. The treatments consisted of 500, 1,000 and 1,500 g ha-1 of chlormequat; 62.5, 125 and 187.5 g ha-1 of trinexapac-ethyl and 40, 80 and 120 g ha-1 of paclobutrazol applied at growth stages 6 or 8, growth stage used on the scale of Feeks and Large, and a control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlormequat; Trinexapac-ethyl; Paclobutrazol; Triticum aestivum; Plant height; Yield.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000200022

Agronomic Performance of Intacta RR2 Soybean Submitted to Doses of Glyphosate
Provedor de dados: 87
Autores: CESCO,V.J.S.; KRENCHINSKI,F.H.; RODRIGUES,D.M.; NARDI,R.; ALBRECHT,A.J.P.; ALBRECHT,L.P.
ABSTRACT: This study aimed at evaluating the agronomic performance of Intacta RR2 soybean submitted to the application of glyphosate doses in post-emergence. For this, two experiments were conducted in two locations (Palotina and Marechal Cândido Rondon - Paraná state). Applications were carried out with increasing rates of glyphosate (0, 720, 1,440, 2,160, 2,880, 3,600, 4,320 g a.e. ha-1), constituting seven treatments with an experimental design in randomized blocks with four replications, totaling 28 plots for each location. The cultivar used for both experiments was Monsoy 6210 Intacta RR2 IPROTM. The analyzed variables were phytotoxicity at 3, 7, 14, 21 and 28 DAA, A-B and total chlorophyll index, final height, number of pods, 100-seed weight, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Yield; Phytotoxicity; Herbicides; Transgenic soybean.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100306

Understanding the Competitive Effects of Blessed Milkthistle Densities on Wheat
Provedor de dados: 87
Autores: REHMAN,A.; QAMAR,R.; SAFDAR,M.E.; JAVEED,H.M.R.; SHEHZAD,M.; ALI,M.; ASIF,M.; TARAR,Z.H.; AHMED,A.; JAMIL,M.
ABSTRACT: Weed-induced yield loss in wheat crop is a great threat to food security in Pakistan. A comprehensive understanding of weed-crop competition is very important to develop sustainable and cost-effective weed management. For this purpose, two-year field studies were conducted to determine the effect of different blessed milkthistle densities on the phenology and yield of wheat crop in a rice-wheat cropping scheme in Sargodha, Pakistan during 2013-2014 and 2014-2015. The experiment comprised seven treatments: control (weed free), weedy check (weedy without any control) and blessed milkthistle densities of 5, 10, 15, 20 and 25 plants m-2. In response to increasing weed density, a gradual reduction in yield and yield-related traits of wheat was noted....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blessed milkthistle; Density; Phenology; Rice-wheat cropping systems; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100210

Farmer response to rationed and uncertain irrigation supplies
Provedor de dados: 31
Autores: Perry,   Christopher J.; Narayanamurthy,   S.G.
Explores the theoretical and actual responses of farmers faced with irrigation supplies that are limited in relation to available land and labor resources, and where the actual schedule and available volume for delivery are uncertain.
Tipo: Report
Palavras-chave: Water resource management; Water use efficiency; Evapotranspiration; Agricultural production; Irrigated farming; Irrigation scheduling; Water allocation; Water supply; Water scarcity; Water delivery; Reservoirs; Uncertainty; Yield; Crop Production/Industries; Labor and Human Capital; Land Economics/Use.
Ano: 1998
URL: http://purl.umn.edu/44582

Prediction of Loan Deficiency Payments
Provedor de dados: 31
Autores: Cooper,   Joseph C.; Plato,   Gerald E.
This paper develops a stochastic model for estimating potential loan deficiency payments to U.S. corn producers in a discrete-dynamic context. We minimize the potential for misspecification bias by using nonparametric and semi-nonparametric approaches as specification checks in the model. The model permits the forecast at planting time of the resulting empirical distribution of LDP payments for that crop year. Using this model, the paper examines the sensitivity of this distribution to changes in expected price levels.
Tipo: Conference Paper or Presentation
Palavras-chave: Domestic support; Loan deficiency payments; Marketing loan benefits; Corn; Yield; Agricultural Finance.
Ano: 2007
URL: http://purl.umn.edu/9717

More than Mean Effects: Modeling the Effect of Climate on the Higher Order Moments of Crop Yields
Provedor de dados: 31
Autores: Tack,   Jesse B.; Harri,   Ardian; Coble,   Keith H.
The objective of this article is to propose the use of moment functions and maximum entropy techniques as a flexible way to estimate conditional crop yield distributions. We present a moment based model that extends previous approaches in several dimensions, and can be easily estimated using standard econometric estimators. Upon identification of the yield moments under a variety of climate and irrigation regimes, we utilize maximum entropy techniques to analyze the distributional impacts from switching regimes. We consider the case of Arkansas, Mississippi, and Texas upland cotton to demonstrate how climate and irrigation affect the shape of the yield distribution, and compare our findings to other moment based approaches. We empirically illustrate...
Tipo: Presentation
Palavras-chave: Risk; Climate change; Moments; Entropy; Yield; Cotton; Crop Production/Industries; Production Economics; Research Methods/ Statistical Methods; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/123330

Risk premiums and GM traits
Provedor de dados: 31
Autores: Nolan,   Elizabeth; Santos,   Paulo.
An argument in favor of the development of genetically modified (GM) hybrids is that their presence is considered to be risk decreasing. On this basis, insurance premiums for corn growers in the United States who plant approved hybrids have been reduced. In this study we investigate, using a large dataset of experimental data compiled from reports of results from experimental field trials of corn hybrids by the State Agricultural Extension Services of ten universities over 20 years, whether the presence in a corn hybrid of a GM trait, or a combination of these traits, is likely to increase or decrease risk. The effects of input use on production uncertainty can be quantified through the specification and estimation of heteroskedastic production functions...
Tipo: Conference Paper or Presentation
Palavras-chave: Production functions; Yield; Risk; Skewness; Corn; Genetically modified traits; Crop Production/Industries; Risk and Uncertainty; C2; Q12; Q16.
Ano: 2011
URL: http://purl.umn.edu/103692

Revisiting Malthus in Light of Agricultural Biotechnology
Provedor de dados: 31
Autores: Mock,   J.N.; Epperson,   James E.
While the population of the world is continually growing, there are doubts that the food supply will be sufficient to keep pace.  Although 14% of the world is undernourished today, an exponentially increasing population could be catastrophic if agricultural production lags too far behind.  This paper attempts to forecast agricultural yield given the recent advent of genetically modified crops as a means to see whether this technology has the potential to help supply the world with food in the future.  Through regression, a model was developed to make predictions of corn yields as a case study on how biotechnology might affect future agricultural production.
Tipo: Working or Discussion Paper
Palavras-chave: Yield; Future; Prediction; Model; Agricultural and Food Policy; Crop Production/Industries; Food Security and Poverty.
Ano: 2008
URL: http://purl.umn.edu/45613

MARKETING AND CROP INSURANCE COMBINED TO MANAGE RISK ON A CASS COUNTY REPRESENTATIVE FARM
Provedor de dados: 31
Autores: Clow,   Aaron D.; Flaskerud,   George K.
This study analyzed the effects that the use of crop insurance products and marketing alternatives had on the gross revenue per acre for an individual farm in Cass County. Crop insurance products and marketing strategies were analyzed individually to determine if they were effective in minimizing down side risk, and combined to determine if integration created synergies. A whole farm scenario analysis was run that included integrated strategies that implemented the same insurance coverage and marketing alternatives for each crop.  Several general conclusions can be drawn for situations similar to the representative farm. When analyzed at the individual crop level, the use of crop insurance at the 65 percent level minimizes down side risk in wheat and corn,...
Tipo: Working or Discussion Paper
Palavras-chave: Risk; Management; Strategy; Yield; Price; Insurance; Market; Risk and Uncertainty.
Ano: 2001
URL: http://purl.umn.edu/23517

A Mixed Effects Model of Crop Yields for Purposes of Premium Determination
Provedor de dados: 31
Autores: Roberts,   Michael J.; Tack,   Jesse B.
Farm income is highly variable due to annual price and yield uncertainties. The federally subsidized crop insurance program is an important tool for managing this risk, and has grown from a relatively modest program to one that encompasses the majority of productive cropland in the country. The success of this program depends on identification of actuarially fair insurance premium rates, which in turn depends on accurate estimation of farm-level yield distributions. We use the confidential U.S. Department of Agriculture Risk Management Agency (RMA) panel dataset to estimate farm-specific distributions of yields and actually fair crop insurance premiums. Our ongoing work includes using the difference between our estimated actually fair premiums and RMA's to...
Tipo: Conference Paper or Presentation
Palavras-chave: Yield; Crop Insurance; Policy; Mixed Model; Agricultural and Food Policy.
Ano: 2011
URL: http://purl.umn.edu/103405

World Soybean Production: Area Harvested, Yield, and Long-Term Projections
Provedor de dados: 31
Autores: Masuda,   Tadayoshi; Goldsmith,   Peter D.
www.ifama.org
Tipo: Journal Article
Palavras-chave: Soybean; Production; Yield; Land use; Long-term projection; Exponential smoothing with damped trend; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; Land Economics/Use; Q1.
Ano: 2009
URL: http://purl.umn.edu/92573

COSTS, YIELDS, AND NET RETURNS, COMMERCIAL ULTRA-NARROW ROW COTTON PRODUCTION, MISSISSIPPI, 1999
Provedor de dados: 31
Autores: Parvin,   David W., Jr.; Cooke,   Fred T., Jr.; Molin,   W.T.
An analysis of a 1999 sample of 13 no-till producers indicates that over a reasonable range of cotton lint prices, ultra narrow cotton production may result in larger net returns per acre than conventional production practices.  The largest percentage cost reduction is in fixed expenses.  In general, total direct expenses per acre are also reduced, although UNRC usually results in higher seed and chemical expenses.  UNRC has a lower total cost per pound compared to conventional cotton.
Tipo: Working or Discussion Paper
Palavras-chave: UNRC; No-Till; Cost of production; Yield; Stripper; Harvest; Production Economics.
Ano: 2000
URL: http://purl.umn.edu/15786

Payments under the Average Crop Revenue Program: Implications for Government Costs and Producer Preferences
Provedor de dados: 31
Autores: Cooper,   Joseph C.
This paper develops a stochastic model for comparing payments to U.S. corn producers under the U.S. Senate’s Average Crop Revenue Program (ACR) versus payments under the price-based marketing loan benefit and countercyclical payment programs. Using this model, the paper examines the sensitivity of the density function for payments to changes in expected price levels. We also assess the impact of the choice of yield aggregation used in the ACR payment rate on the mean and variance of farm returns. We find that ACR payments lower the producer’s coefficient of variation of total revenue more than does the price-based support, although ACR may not raise mean revenue as much. While corn farmers in the heartland states might still prefer to receive the...
Tipo: Journal Article
Palavras-chave: Domestic support; Counter-cyclical payments; Revenue; Price; Corn; Yield; Pairs bootstrap; Kernel density; Combinatorial optimization; Agricultural and Food Policy.
Ano: 2009
URL: http://purl.umn.edu/49864

Evaluating the Production and Price Impacts of Biotechnology Application in Crop Markets
Provedor de dados: 31
Autores: Brookes,   Graham; Yu,   Tun-Hsiang (Edward); Tokgoz,   Simla; Elobeid,   Amani E.
Biotechnology crop traits have been applied on a widespread commercial global basis since 1996, making it the most rapidly adopted crop technology in agriculture. The primary biotechnologies used have included technology delivering herbicide tolerance and insect resistance for crops, such as corn, soybeans, cotton, and canola. This technology has provided farmers with productivity improvements through a combination of yield improvements and cost reductions. Thus, this technology has had an impact on prices of cereals and oilseeds (and their derivatives) both in countries where biotech traits were applied and in the global market. Realizing the surging significance of biotechnology application in global crop markets, this study first summarizes the...
Tipo: Conference Paper or Presentation
Palavras-chave: Biotech crops; Prices; Yield; Soybeans; Corn; Canola; Partial-equilibrium model; Price effects; Demand and Price Analysis; Productivity Analysis.
Ano: 2010
URL: http://purl.umn.edu/61164

Kansas Grain Supply Response to Economic and Biophysical Factors, 1977-2007
Provedor de dados: 31
Autores: Boussios,   David; Barkley,   Andrew P.
This research identifies and quantifies the impact of biophysical and economic variables on Kansas grain supply for the period 1977- 2007. This research estimates total supply response by aggregating yield and acreage responses. Previous methods have effectively analyzed the response of crop supply through either acreage or yield responses. However, the method proposed in this research incorporates both yield and acreage response to various production variables through recursive modeling. The results include the negative impact of acreage expansion on aggregate yields and thus the impact on total supply. The results also show that previous methods underestimate supply response elasticities by as much as 97%. Furthermore, this research estimates supply...
Tipo: Presentation
Palavras-chave: Yield; Acreage; Supply; Grain; Extensive Margin; Producer Expectations; Climate; Weather; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124385

Improving Agronomic Structure in Econometric Models of Climate Change Impacts
Provedor de dados: 31
Autores: Ortiz-Bobea,   Ariel.
Economists are relying on agronomic concepts to construct weather or climate independent variables and improve the reliability and efficiency of econometric models of climate change impact on U.S. agriculture. The use of cumulative heat measures in agronomy (growing degree-days), has recently served as a basis for the introduction of plurimonthly calendar heat variables in these models. However, season-long weather conditions seem at odds with conventional agronomic wisdom that emphasizes crucial differences in crop stage sensitivity to environmental stress. In this paper I show that weather variables matched to key corn development stages provide an enhanced and more stable fit than their calendar counterparts. More importantly, the proposed...
Tipo: Conference Paper or Presentation
Palavras-chave: Agriculture; Climate change; Corn; Degree-days; Phenology; Proxy; Yield; Production Economics; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy; Q54; C23.
Ano: 2011
URL: http://purl.umn.edu/103656

WHITE WHEAT MARKET AND STRATEGY ANALYSIS FOR NORTH DAKOTA
Provedor de dados: 31
Autores: Janzen,   Edward L.; Wilson,   William W.
There is a growing interest and a perceived demand for hard white (HW) wheat to satisfy the needs of the growing Asian noodle market which is currently dominated by Australia.  The wheat industry is reviewed with attention to U.S. and Australian production and international markets for white wheat.  Quality issues and target markets/market development are discussed.  Economic issues associated with production of HW wheat in hard red spring (HRS) wheat producing areas, primarily North Dakota, are explored with emphasis on agronomic issues, segregation and handling costs, yield factors, and price premiums.  At present, the development of HW wheat in North Dakota must focus on yield improvements and the development of a robust HW wheat adaptable to climatic...
Tipo: Working or Discussion Paper
Palavras-chave: Hard white (HW) wheat; Wheat breeding; Wheat quality; Wheat markets; Wheat end uses; Agronomics; Yield; Price premiums; Crop Production/Industries.
Ano: 2001
URL: http://purl.umn.edu/23613

Effects of No-Tillage Production Practices on Crop Yields as Influenced by Crop and Growing Environment Factors
Provedor de dados: 31
Autores: Toliver,   Dustin K.; Larson,   James A.; English,   Burton C.; Roberts,   Roland K.; Torre Ugarte,   Daniel de la; West,   Tristram O.
This paper evaluated differences between yields of no-tillage compared to conventional or reduced tillage and their associated downside risk. Six crops were evaluated along with how those yields and risks differed by various environmental factors such geographic location, precipitation, soil type and how long the practice had been used.
Tipo: Thesis or Dissertation
Palavras-chave: No-tillage; Conservation; Conventional tillage; Downside-risk; Yield; Agribusiness; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Risk and Uncertainty.
Ano: 2011
URL: http://purl.umn.edu/98818

Sulphur test KCl-40 and growth of the Australian canola industry
Provedor de dados: 31
Two Australian Centre for International Agricultural Research (ACIAR) projects in the mid-1980s (Projects 8328 and 8804) funded research at the University of New England to help better understand and improve phosphorus and sulfur management in tropical agricultural systems. As tropical agriculture expands into more marginal land and production systems intensify, the demands for soil phosphorus and sulfur increase.  Major outcomes of the research were a better understanding of the nutrient dynamics in South-East Asia and the development of a new and more reliable soil test for available sulfur. The new test (KCl-40) more accurately measured the sulfur available to plants, as it was able to measure the sulfur held within organic matter. A spin-off from the...
Tipo: Book
Palavras-chave: Sulfur; Canola; Australia; Soil; Phosphorus; Nutrient dynamics; South-east Asia; KCl; Livestock; Economic evaluation; Yield; NSW; WA; Agribusiness; Crop Production/Industries; Farm Management; Food Security and Poverty; International Development; Livestock Production/Industries; Production Economics.
Ano: 1998
URL: http://purl.umn.edu/47501

Is geographic diversification sufficient to limit contract grower risk?
Provedor de dados: 31
Autores: Geyser,   Mariette; Louw,   Andre; Botha,   L.
Lending and financial institutions have looked for a variety of ways to expand their portfolios into agriculture, but because of the risks associated with lending to farmers who lack traditional forms of collateral, they face price and yield risks, causing these inroads to be limited. Market-based instruments are readily available for price risk. Organised exchanges offering the most basic of these instruments, futures and options, have operated for a long time, providing transparency to the market and low-cost risk transfer tools for those able to access them. While the use of price risk management instruments is an incomplete solution, it has sufficient merits on its own and will make the overall burden of risk more bearable. The use of these instruments...
Tipo: Journal Article
Palavras-chave: Geographic diversification; Contract grower; Risk; Lending; Rainfall; Yield; Agricultural Finance.
Ano: 2009
URL: http://purl.umn.edu/49163

O que significam as medidas de produtividade da agricultura?
Provedor de dados: 31
Autores: Alves,   Eliseu Roberto de Andrade.
Some productivity measures area analyzed. The emphasis is on concepts, limitations and on some empirical results. Software is not discussed. The productivity measures are classified in optimized, whenever obtained by an optimization procedure, and not optimized, as yield, labor productivity and total factor productivity (ptf). The work shows when yields and total factor productivity say the same thing to conclude that this is possible only in a primitive agriculture where labor and land are the only factors of production used. This type of agriculture is present only in backward regions of Brazil. Hence yield, except in this situation, is a poor measure of profitability. Empirical works show that the development of Brazilian agriculture follows a path of...
Tipo: Journal Article
Palavras-chave: Yield; Labor Productivity; Total Factor Productivity; Technical Efficiency; Production Frontier; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/102083

Enhancing food and livelihood security in the context of the food and financial crisis: challenges and opportunities for small scale rainwater harvesting and conservation
Provedor de dados: 31
Autores: Baiphethi,   Mompati N.; Viljoen,   Machiel F.; Kundhlande,   Godfrey; Ralehlolo,   N.G.
The world recently experienced the food and financial crisis. The food crisis was an indicator of the challenges towards sufficiently feeding an increasing world population. Food production through rainfed and irrigated agriculture account for the bulk of the freshwater used globally but the water is still sufficient to meet the MDG goal on hunger reduction. Agricultural water management is thus an important challenge for feeding humanity; creates the need to find sustainable methods of managing water that will include all water users. Some of these methods include rainwater harvesting which has great potential in increasing food production as compared to irrigation. This paper aims to identify challenges and opportunities for small scale rainwater...
Tipo: Journal Article
Palavras-chave: Food security; Livelihoods; Rainwater harvesting; Household; Yield; Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/96640

Quais as Perspectivas da Produção de Biodiesel de Mamona no Nordeste Brasileiro?
Provedor de dados: 31
Autores: Vaz,   Paulo Henrique Pereira De Meneses; Sampaio,   Yony.
O objetivo desse artigo é analisar as condições necessárias para o desenvolvimento do PNPB (Programa Nacional de Produção e Uso do Biodiesel) no nordeste brasileiro. A metodologia utilizada é essencialmente prospectiva, considerando o custo de oportunidade da produção de mamona para os agricultores familiares para avaliar como se comportam diante de variações de preço e produtividade da mamona, apontada como insumo mais adequado para o Biodiesel da região. Os resultados encontrados apontam para a necessidade de incrementos no nível de produtividade da cultura a fim de incentivar maior participação da agricultura tradicional. Há indícios de que uma média de produção próxima de 1ton/ha tornaria o plantio dessa oleaginosa viável para maior parte desses...
Tipo: Conference Paper or Presentation
Palavras-chave: Mamona; Biodiesel; Produtividade; Agricultura familiar; Viabilidade econômica; Castor beans; Biodiesel; Yield; Family agriculture; Economic viability; Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/108162

THE EFFECTS OF RESEARCH ON WHEAT YIELDS AND YIELD VARIANCES
Provedor de dados: 31
Autores: He,   Senhui; White,   Fred C.; Fletcher,   Stanley M.
This paper investigates the impacts of research investment on wheat production.  A two-way error component random effect model was estimated using panel data to examine the effects of research investment on mean yield and yield variance.  Results show that, for the time period between 1974 and 1995, research investment enhanced yield stability but had no significant impact on mean yield.   Key words: yield, yield variance, research investment.
Tipo: Conference Paper or Presentation
Palavras-chave: Yield; Yield variance; Research investment.; Crop Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/35155

Üszőellések elkülönített elszámolásának hatása az eredményre és a vagyonra
Provedor de dados: 31
Autores: Abel,   Ildiko; Hoffmann,   Andras.
Megvizsgáljuk, hogy a borjak számviteli törvénynek megfelelő elszámolása hogyan hat az önköltségre, az eredményre és a vállalkozás vagyonára. Megállapítható, hogy az előhasi üszőktől született borjak növendékállományon belül történő elszámolásának hatása vagyont és eredményt csökkentő tételként jelentkezik. Azt, hogy az elszámolásban keletkező különbözet milyen arányban jelenik meg vagyont és eredményt csökkentő tételként, azt a korosbítás gyakorlata is jelentősen befolyásolja. Ha az állományt már az első korcsoport után szétválasztják, akkor nagyobb hányad kompenzálja a tejre jutó költségnövekedést és kisebb lesz a vagyoncsökkenés. ------------------------------------------------------ This study focuses on how recording of calves in accordance with the...
Tipo: Journal Article
Palavras-chave: Tehenészet; Üszőellés; Élőtömeg-önköltség; Hozam; Cow farm; Heifer birthing; Live mass net cost; Yield; Farm Management; Livestock Production/Industries.
Ano: 2010
URL: http://purl.umn.edu/99173

Efficiency analysis of a sheep farm
Provedor de dados: 31
Autores: Vincze,   Judit; Tenk,   Antal.
Our study shows an analysis of a sheep farm. The present farm was chosen for analysis due to the fact that it is run under special natural conditions and as for the sheep farming, it has quite a few non-typical features. These raise some economic issues, which have to be analysed, questions have to be answered that may result in useful conclusions. Since sheep farming does not seem to be able to overcome its difficulties on its own, the EU support system could give the initial step necessary for the success and would also help to sustain sheep farms. The amount of grant that is usual in the EU could provide for the sustainability of this sector, the relative safety of sales, the equal chances of the farms operating under different capabilities and if...
Tipo: Journal Article
Palavras-chave: Ewe; Production cost; Yield; Production value; Results of sector; Agricultural and Food Policy; Livestock Production/Industries; Production Economics.
Ano: 2007
URL: http://purl.umn.edu/51953

Pigeonpea improvement
Provedor de dados: 31
Autores: Ryan,   James G.
This study was commissioned by the Australian Centre for International Agricultural Research (ACIAR) to evaluate the economic impact of two projects (8201 and 8567) for which ACIAR provided support from 1982–89. These projects were aimed at the improvement of the grain yield potential of pigeonpea (Cajanus cajan) using modern plant breeding, along with associated physiological, agronomic, processing and socioeconomic research. The commissioned organisation in Australia was the University of Queensland. The partners were: Fiji (Ministry of Primary Industries, Native Land Development Corporation); Indonesia (Central Research Institute for Food Crops, Agency for Agricultural Research and Development); India (Indian Council for Agricultural Research,...
Tipo: Book
Palavras-chave: Pigeonpea; ACIAR; Economic impact; Yield; Plant breeding; Fiji; Indonesia; India; Thailand; Australia; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Development; Production Economics.
Ano: 1998
URL: http://purl.umn.edu/47498

RESEARCH REGARDING OIL SEEDS CROPS DEVELOPMENT IN ROMANIA IN THE EU CONTEXT
Provedor de dados: 31
Autores: Popescu,   Agatha.
Professional paper
Tipo: Article
Palavras-chave: Rape; Soybean; Sunflower; Cultivated area; Yield; Production; Romania; Agribusiness; Crop Production/Industries; Q10; Q01.
Ano: 2012
URL: http://purl.umn.edu/123964

A Revenue-Based Alternative to the Counter-Cyclical Payment Program
Provedor de dados: 31
Autores: Cooper,   Joseph C.
This paper develops a stochastic model for comparing payments to U.S. corn producers of a revenue-based counter-cyclical payment (R-CCP) that is offered as an alternative in the 2007 House "Farm Bill" (H.R. 2419) to the current price-based CCP (P-CCP). We minimize the potential for miss-specification bias in the model by using nonparametric and semi-nonparametric approaches as specification checks in the model. Using this model, the paper examines the sensitivity of the density function for payments to changes in expected price levels. A mean-variance utility function approach is used to assess producer preferences for choice of CCP program alternative. The results show that as risk reduction instruments at the farm level, there appears to be little...
Tipo: Conference Paper or Presentation
Palavras-chave: Domestic support; Counter-cyclical payments; Revenue; Price; Corn; Yield; Pairs bootstrap; Kernel density; Semi-nonparametric; Combinatorial optimization; Agricultural and Food Policy; Crop Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/6197

Maize Yield Response to Fertilizer and Profitability of Fertilizer Use Among Small-Scale Maize Producers in Zambia
Provedor de dados: 31
Autores: Xu,   Zhiying; Govereh,   Jones; Black,   J. Roy; Jayne,   Thomas S.
Multi-year nationwide survey data is used to estimate maize yield response functions and determine profitability of fertilizer use by small-scale farmers in Zambia. There has been a dearth of empirical studies on economics of fertilization in the context of Sub-Saharan Africa. In this paper we identify major methodological issues arising from using survey data and estimate maize yield response functions for small-scale rural households that have various management practices and soil conditions in two major agro-climatic zones. Profitability of fertilizer use is determined for each group of households. Our findings provide the following key messages. First, households that obtained fertilizer on time and used animal draught power or mechanical power for...
Tipo: Conference Paper or Presentation
Palavras-chave: Maize; Yield; Fertilizer; Profitability; Survey data; Crop Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/25730

ACRE: A Revenue-Based Alternative to Price-Based Commodity Payment Programs
Provedor de dados: 31
Autores: Cooper,   Joseph C.
This paper develops a stochastic model for estimating the probability density function of the Average Crop Revenue Election (ACRE), a revenue-based commodity support payment that is offered under the 2008 Farm Act as an alternative to the traditional suite of price-based commodity payments, that is, marketing loan benefits and counter-cyclical payments.  We minimize the potential for miss-specification bias in the model by using nonparametric and semi-nonparametric approaches as specification checks in the model. Our simulation results show that adding ACRE revenue payments to gross revenue reduced the downside risk in revenue for corn, wheat, and soybean farmers in 2009 in the four locations examined, with reductions ranging from 4% to 25%.   Integrating...
Tipo: Conference Paper or Presentation
Palavras-chave: Domestic support; Average crop revenue election; Loan deficiency payments; Counter-cyclical payments; Revenue; Price; Corn; Yield; Pairs bootstrap; Kernel density; Semi-nonparametric; Combinatorial optimization; Negative exponential utility function; Agricultural and Food Policy; Demand and Price Analysis.
Ano: 2009
URL: http://purl.umn.edu/49180

COSTS, YIELDS, AND NET RETURNS, COMMERCIAL NO-TILL COTTON PRODUCTION, MISSISSIPPI, 1999
Provedor de dados: 31
Autores: Parvin,   David W., Jr.; Cooke,   Fred T., Jr.
An analysis of a 1999 sample of ten no-till producers indicates that over a reasonable range of cotton lint prices, no-till cotton production may result in larger net returns per acre than conventional tillage.  However, the authors caution that additional analysis based on a larger sample of commercial no-till growers on better cotton soils is needed.
Tipo: Working or Discussion Paper
Palavras-chave: No-till; Spindle harvest; Cost of production; Yield; Production Economics.
Ano: 2000
URL: http://purl.umn.edu/15794

Factors Influencing Wheat Yield and Variability: Evidence from Manitoba, Canada
Provedor de dados: 31
Autores: Carew,   Richard; Smith,   Elwin G.; Grant,   Cynthia.
Production functions to explain regional wheat yields have not been studied extensively in the Canadian prairies. The objective of this study is to employ a Just-Pope production function to examine the relationship between fertilizer inputs, soil quality, biodiversity indicators, cultivars qualifying for Plant Breeders’ Rights (PBR), and climatic conditions on the mean and variance of spring wheat yields. Using regional-level wheat data from Manitoba, Canada, model results show nitrogen fertilizer, temporal diversity, and PBR wheat cultivars are associated with increased yield variance. Mean wheat yield is reduced by the proportion of land in wheat, the interaction of growing temperature and precipitation, and spatial diversity. By contrast, higher soil...
Tipo: Journal Article
Palavras-chave: Climate; Fertilizer; Manitoba; Plant Breeders’ Rights; Production risk; Wheat; Yield; Agribusiness; Crop Production/Industries; Farm Management; Land Economics/Use; Productivity Analysis; Risk and Uncertainty; O18; Q16.
Ano: 2009
URL: http://purl.umn.edu/56649

DETERMINACIÓN DE LA RENTABILIDAD DE LA PRODUCCIÓN DE OVINOS RAZA PELIBUEY EN EL NORTE DE SONORA
Provedor de dados: 31
Autores: Retes Lopez,   Rafael; Dominguez Canizales,   Karla; Moreno Medina,   Salomon; Denogean Ballesteros,   Francisco G.; Ibarra Flores,   Fernando A.; Martin Rivera,   Martha H.
The feeding and the shelter are considered basic needs of the man and one of the options to satisfy them is through the lambs which contribute to cover them with their meat, wool and skin. For the analysis of the yield a flock took itself from twenty females and a stallion one of Pelibuey race and was developed in conditions of semiestabulado and artificial prairie with oats and rye grass in the north of the State of Sonora.Several indicators were taken to carry out the determination of the yield taking in first instance the capital of work, point of balance, sensitivity analysis as well as the relation benefit-cost. In the case of first the amount of 109.650,44 like so was determined whereas the balance point obtains as of the second period of 270 days...
Tipo: Article
Palavras-chave: Lambs; Yield; Capital of work; Analysis; Benefit-cost.; Agribusiness.
Ano: 2012
URL: http://purl.umn.edu/120497

Modeling in the Adjustment of Fertilization Recommendation through Leaf Analysis in Fertigated ‘Prata’ Banana
Provedor de dados: 90
Autores: Deus,José Aridiano Lima de; Neves,Júlio César Lima; Soares,Ismail; Alvarez V.,Víctor Hugo; Albuquerque,Fabricio Martinazzo Regis de; Santos,Lauana Lopes dos; Natale,William.
ABSTRACT: In banana cultivation, fertilization recommendations are almost exclusively based on soil chemical analysis, without considering leaf analysis and expected yield, which can help in the adjustment of fertilization programs. The aim of this study was to develop a method to recommend macronutrient fertilization rates which integrates data on leaf analysis, soil chemical analysis, and yield. Yield, soil chemical analysis, and leaf analysis data of fertigated plantations of ‘Prata’ banana were obtained for the first and second halves of the years from 2010 to 2015. Yield was correlated with soil organic matter (SOM) and soil contents of macronutrients (P, K, Ca, and Mg) to obtain the critical level (CLNui). Then, leaf nutrient contents were plotted on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Nutrient; Critical level; Boundary line; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100532

Ammonia volatilization from nitrogen fertilizers in no-till wheat and maize in southern Brazil
Provedor de dados: 90
Autores: Viero,Fernando; Bayer,Cimélio; Fontoura,Sandra Mara Vieira; Moraes,Renato Paulo de.
Crop residues on the soil surface of no-till systems can intensify ammonia volatilization from N fertilizers applied to cereal crops. This study assessed the magnitude of N losses through ammonia volatilization from urea applied to no-till winter (wheat) and summer crops (maize) on a Typic Hapludox in the south-central region of Paraná, southern Brazil. In addition, the potential of alternative N sources (urea with urease inhibitor, liquid fertilizer, ammonium nitrate and ammonium sulfate) and different urea managements (fertilizer applied in the morning or afternoon) were evaluated. Two experiments with maize and wheat were carried out for two years, arranged in a randomized block design with four replications. Nitrogen volatilization losses were assessed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen fertilization; Efficiency; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500017

Pig slurry and nutrient accumulation and dry matter and grain yield in various crops
Provedor de dados: 90
Autores: Lourenzi,Cledimar Rogério; Ceretta,Carlos Alberto; Brunetto,Gustavo; Girotto,Eduardo; Tiecher,Tadeu Luis; Vieira,Renan Costa Beber; Cancian,Adriana; Ferreira,Paulo Ademar Avelar.
Pig slurry (PS) represents an important nutrient source for plants and using it as fertilizer makes greater nutrient cycling in the environment possible. The aim of this study was to assess how PS application over a period of years can affect grain yield, dry matter production and nutrient accumulation in commercial grain and cover crops. The experiment was carried out in an experimental area of the Universidade Federal de Santa Maria, in Santa Maria, RS, Brazil, from May 2000 to January 2008. In this period, 19 grain and cover crops were grown with PS application before sowing, at rates of 0, 20, 40 and 80 m³ ha-1. The highest PS rate led to an increase in nutrient availability over the years, notably of P, but also of nutrients that are potentially toxic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manure; Yield; Crop rotation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000300027

Biometric Responses of Soybean to Different Potassium Fertilization Management Practices in Years with High and Low Precipitation
Provedor de dados: 90
Autores: Esper Neto,Michel; Minato,Evandro Antonio; Besen,Marcos Renan; Inoue,Tadeu Takeyoshi; Batista,Marcelo Augusto.
ABSTRACT Brazilian soybean producers commonly apply maintenance potassium (K) fertilization during cultivation to restore the K taken up by plants; however, this measure can modify the morphophysiological plant characteristics, since the functions of K are closely related with plant growth and development. This study assessed the morphological changes in soybean plants in response to K rates, sowing fertilization, and the application periods of K fertilization in a Latossolo Vermelho eutroférrico (Oxisol) under a no-tillage system, located in the municipality of Floresta, Paraná. A randomized block design was used in the experiment with four replications in a fully crossed factorial design (5 × 2 × 2). The experiment was carried out in two growing seasons...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf area index; Correlation; Yield; Drought.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100525

Defoliation percentage in two soybean cultivars at different growth stages
Provedor de dados: 91
Autores: Glier,Cláudio A. da S.; Duarte Júnior,José B.; Fachin,Gabriel M.; Costa,Antonio C. T. da; Guimarães,Vandeir F.; Mrozinski,Chrismam R.
ABSTRACT The objective of this study was to evaluate the agronomic variables due to the effects of different levels of defoliation in the phenological phases of two soybean cultivars. The experiment was conducted during the 2011/2012 season, in a randomized block design with three replicates, in a 2 x 4 x 5 factorial scheme. Two cultivars were exposed to defoliations of 0, 25, 50, 75 and 100% at the stages of V4, V9, R3 and R5. The cultivar 'NK 7059RR' showed less sensitivity to defoliation than the cultivar 'IN 4990RG'. 25% defoliation levels reduced the yield of the cultivar 'IN 4990RG', while levels of 75 and 100% reduce the number of grains per pod in both cultivars. The defoliation performed in the V4 stage lead to lower grain yield than defoliation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; Yield; Leaf area indices.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000600567

Performance of spray nozzles to control fusarium head blight and mycotoxin in the barley crop
Provedor de dados: 91
Autores: Reynaldo,Étore F.; Machado,Thiago M.
ABSTRACT This study aimed to evaluate the performance of spray nozzles to control fusarium head blight (FHB) and mycotoxins in barley grains. The barley cultivar used in the test was ‘BRS Aliansa’, with a density of 300 plants m-2. Fungicide applications were performed using a mechanized set formed by a sprayer (Jacto, model Falcon Vortex) and a tractor (Massey Ferguson, Model 283). The spray volume used was 150 L ha-1. The nozzles used were single fan, single fan with air induction, hollow cone and double fan. The assay was performed in strips, totaling an area of 350 m2 and the variables yield and concentration of mycotoxin in the grains were determined along the strips. The data were submitted to descriptive statistics; the results were compared by F...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hordeum vulgare L.; Technology application; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300209

Photosynthetic efficiency, gas exchange and yield of castor bean intercropped with peanut in semiarid Brazil
Provedor de dados: 91
Autores: Dutra,Wellison F.; Melo,Alberto S. de; Dutra,Alexson F.; Brito,Marcos E. B.; Filgueiras,Luanna M. B.; Meneses,Carlos H. S. G.
ABSTRACT To evaluate the photosynthetic efficiency, gas exchange and yield of castor bean intercropped with peanut under Brazilian semiarid conditions, a field experiment was set up with six treatments and four replicates arranged in a randomized block design. The experiment consisted of the cultivation of castor bean ‘BRS Energia’ in a monocrop system and intercropped with peanut ‘BR 1’. One treatment was formed by monocropped castor bean and the others by the castor bean intercropped with peanut with different intercrop establishment times, i.e. peanut sowing times (0, 10, 15, 20 and 25 days after castor bean sowing). The castor bean photosynthetic and carboxylation efficiencies were higher in the intercrop system with a 25-day interval between sowings....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyll fluorescence; Photosynthesis; Ricinus communis L.; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200106

Economic analysis of irrigated melon cultivated in greenhouse with and without soil plastic mulching
Provedor de dados: 91
Autores: Lima,Elvis M. de C.; Carvalho,Jacinto de A.; Viol,Miguel A.; Rezende,Fátima C.; Thebaldi,Michael S.; Diotto,Adriano V.
ABSTRACT The objective of this study was to analyze technically and economically the irrigated ‘Gália’ melon (Hybrid Nectar), cultivated in greenhouse with and without using plastic mulch covering on the soil. Simultaneously, two experiments were conducted using a completely randomized design (CRD), in which melon plants were submitted to five water availability levels, defined by 50, 75, 100, 125, and 150% of crop evapotranspiration, with four replicates. The difference between experiments were only about the soil covering with plastic mulch: with (CC) or without (SC) plastic mulch. The economically optimal irrigation depths were 208.83 and 186.88 mm, resulting in yields of 50.85 and 44.51 t ha-1 for the experiments with and without mulching,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water depth; Irrigation management; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700471

Agronomic aspects of soybean plants subjected to deficit irrigation
Provedor de dados: 91
Autores: Nunes,Antônia C.; Bezerra,Francisco M. L.; Silva,Roberta A. e; Silva Júnior,José L. C. da; Gonçalves,Flávia B.; Santos,Geovana A.
ABSTRACT This study aimed to evaluate the behavior of soybean plants subjected to irrigation management with controlled water deficits in different phenological stages. The research was conducted in an experimental area of the Federal University of Tocantins (UFT), in Palmas-TO, Brazil. The experimental design was randomized blocks with four replicates, and treatments arranged in a split-plot scheme. The plots consisted of irrigation levels that induced plants to water deficit in the vegetative stage, reproductive stage and throughout the entire cycle, based on potential crop evapotranspiration (ETpc). The subplots corresponded to two soybean cultivars (M9144RR and TMG1288RR). The following agronomic variables were evaluated: days until flowering, days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation management; Yield; Glycine max (L.) Merril.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000700654

Yield and vegetative growth of cactus pear at different spacings and under chemical fertilizations
Provedor de dados: 91
Autores: Silva,João A. da; Donato,Sérgio L. R.; Donato,Paulo E. R.; Souza,Evilasio dos S.; Padilha Júnior,Milton C.; Silva Junior,Ancilon A. e.
ABSTRACT The objective was to evaluate the effect of different spacings and mineral fertilizations on cactus pear growth and production in a randomized block design, with three replicates, in a 3 x 4 factorial scheme: three spacings, 1.00 x 0.50 m, 2.00 x 0.25 m and 3.00 x 1.00 x 0.25 m, and four fertilizations, 000-000-000, 000-150-000, 200-150-000 and 200-150-100 kg ha-1 of N, P2O5 and K2O, respectively. Plant growth was evaluated between 90 and 390 days and production and growth were evaluated at 620 days after planting. There were significant interactions between spacing and fertilization for plant height, number of cladodes and cladode area index from 90 to 390 days and for production of fresh and dry matter at 620 days after planting. Spacing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Opuntia; Plant arrangement; Fertilization; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000600564

Organic residues on rooting and yield of sugarcane in Typic Quartzipsamments soil
Provedor de dados: 91
Autores: Pina,José C.; Bono,José A. M.; Oliveira,Ademir K. M. de; Rufino,Rodrigo dos S.; Amorim,Diogo O.
The use of renewable residues as a source of nutrients, associated with chemical input, can provide better efficiency, greater amount of nutrients available to the plant and reduce its application. The objective of this study was to evaluate the influence of different organic residues associated with chemical fertilizer (NPK) on sugarcane rooting and yield. The experiment was conducted in a Typic Quartzipsamments soil, located in Campo Grande-MS, Brazil, from October 2010 to September 2013. The plots were 4 x 5 m (20 m2), set in a randomized block design with four replicates. The treatments consisted of poultry litter (10 t ha-1), filter cake (10 t ha-1), vermicompost (10 t ha-1) and vinasse (300 m3 ha-1), all associated with basic NPK fertilizer, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum; Sustainability; Renewable residues; Yield.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000700650

Calibration and evaluation of the DSSAT/Canegro model for sugarcane cultivars under irrigation managements
Provedor de dados: 91
Autores: Coelho,Anderson P.; Dalri,Alexandre B.; Fischer Filho,João A.; Faria,Rogério T. de; Silva,Laércio S.; Gomes,Romário P.
ABSTRACT Model calibration is a fundamental factor to obtain high accuracy in the estimation of crop growth and yield. This study aimed to parameterize the genetic and ecotype coefficients of the DSSAT/Canegro model for five sugarcane cultivars kept under three water managements, besides evaluating the accuracy of the model in predicting sugarcane stalk yield, sugar yield and height. Experimental field data were obtained from two years (2016 and 2017) of cultivation at FCAV/Universidade Estadual Paulista, Jaboticabal, SP, Brazil. The cultivars were maintained under supplementary irrigation, deficit irrigation and no irrigation. Data of the supplementary irrigation treatment (without stress) were used for the parameterization of each cultivar. Model...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sacharum spp.; Crop model; Parameterization; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100052

No-tillage curly lettuce cultivated under different spacings
Provedor de dados: 91
Autores: Cecconello,Antonio M.; Trogello,Emerson; Ferro,Jolcemar; Rossato,Otavio B.
ABSTRACT The use of appropriate cultural practices is important for the sustainability of the production system. This study aims to evaluate the agronomic performance of lettuce cultivar ‘Mônica’, during two crop cycles, at the Instituto Federal Catarinense, Campus of Concórdia, SC, Brazil. Two experiments were conducted in the field, arranged in randomized block design, in a 3 x 2 factorial scheme, evaluating the effects of three spacings (0.20 × 0.20, 0.25 × 0.25 and 0.30 × 0.30 m), associated with two planting systems (conventional and no-tillage with millet), with four repetitions in the first cycle and five in the second. At 39 and 44 days after transplanting, six plants were harvested in the first and in the second cycles, respectively. Soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa L.; Millet; Weeds; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000400231

Nutrient concentration and nutritional efficiency in ‘Gigante’ cactus pear submitted to different spacings and fertilizations
Provedor de dados: 91
Autores: Lédo,Alex A.; Donato,Sergio L. R.; Aspiazu,Ignácio; Silva,João A. da; Donato,Paulo E. R.; Carvalho,Abner J. de.
ABSTRACT The objective of this study was to evaluate nutrient concentration and nutritional efficiency in ‘Gigante’ cactus pear under different chemical, organic and organomineral fertilizations, planting configurations and spacings, during three production cycles. Seventy two treatments, involving two types of configuration in the plots, three spacings in the subplots and 12 types of fertilization in the sub-subplots were arranged in a split-split-plot scheme, in a randomized block design, with three repetitions. At the time of harvest of each production cycle, 40 cladode tissue samples were collected per treatment to determine dry matter mass and nutrient concentration, which were used to calculate the coefficients of biological utilization of nutrients....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Opuntia sp.; Biological utilization coefficient; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300154

Technological quality and yield of sugarcane grown under nitrogen doses via subsurface drip fertigation
Provedor de dados: 91
Autores: Rhein,Andressa F. L.; Pincelli,Renata P.; Arantes,Marcel T.; Dellabiglia,William J.; Kölln,Oriel T.; Silva,Marcelo de A.
ABSTRACT This study characterized the technological quality and yield of sugarcane cv. SP80-3280 under nitrogen doses via subsurface drip fertigation. Five treatments were established using N-fertilizer in the form of urea (0, 50, 100, 150 and 200 kg N ha-1), with four replicates, applied via subsurface drip fertigation. The technological quality (fiber% cane; Brix% juice; pol% juice, pol% cane; juice purity and total recoverable sugar - TRS), as well as yield of stalks and sugar were determined 381 days after the third harvest. The technological variables Brix%, pol% juice, purity% and TRS of sugarcane, cultivar SP80-3280, were altered by the application of nitrogen doses via subsurface drip fertigation, with significant reductions at the dose of 200 kg N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Nitrogen fertilization; Full irrigation; Pol% cane; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000300209

Yield of sugarcane submitted to nitrogen fertilization and water depths by subsurface drip irrigation
Provedor de dados: 91
Autores: Cunha,Fernando N.; Silva,Nelmício F. da; Sousa,Antonio E. C.; Teixeira,Marconi B.; Soares,Frederico A. L.; Vidal,Vitor M.
ABSTRACT Water is limiting for growth and essential for photosynthesis. Crop yield depends on the available amount of this resource and on the efficiency of its use by the plant. This study aimed to evaluate the vegetative growth and the gross yield of sugar and ethanol from sugarcane along cane-plant and ratoon cane cultivation, under different irrigation depths for water replenishment, with and without nitrogen (N) application by subsurface drip irrigation. The experimental design was randomized blocks, analyzed in a split-plot scheme, with four replicates, in which the plots were represented by the interaction: irrigation depths (0, 25, 50, 75 and 100% water replenishment of the field capacity), with and without N fertigation, and subplots were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum L.; Water replenishment; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900841

Response of eggplant crop fertigated with doses of nitrogen and potassium
Provedor de dados: 91
Autores: Souza,Álvaro H. C. de; Rezende,Roberto; Lorenzoni,Marcelo Z.; Seron,Cássio de C.; Hachmann,Tiago L.; Lozano,Cláudia S.
ABSTRACT The objective of the present study was to evaluate the response of eggplant, cv. ‘Ciça’, with respect to yield, number of fruits and dry matter (root and stem), when grown in a greenhouse and conducted under fertigation with nitrogen and potassium. The experiment was conducted in the Irrigation Technical Center of the State University of Maringá, between the months of February and August 2015. Four nitrogen doses (0.0; 6.43; 12.86 and 25.72 g of N plant-1) and four potassium doses (0.0; 5.18; 10.36 and 20.73 g of K plant-1) were tested, totaling 16 treatments in a 4 x 4 factorial scheme, arranged in a completely randomized design with four replicates, in a Red Latosol with sandy texture. The highest number of fruits per plant and yield were found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vegetables; Yield; Greenhouse; Solanum melongena L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000100021

Common bean yield under water suppression and application of osmoprotectants
Provedor de dados: 91
Autores: Bastos,Fabiano J. de C.; Soares,Frederico A. L.; Sousa,Camylla V.; Tavares,Cássio J.; Teixeira,Marconi B.; Sousa,Antonio E. C.
ABSTRACT The objective of this study was to evaluate the performance of the common bean crop grown with application of osmoprotectants based on algae of the genus Durvillaea potatorum in the winter crop season, with occurrence or not of water suppression. The experiment used a randomized block design, in split plots, arranged in a 4x7 factorial scheme, in which the plots were composed of four treatments - periods of water suppression (7, 14, 21 days and the control treatment: 100% of field capacity throughout the crop cycle) and the subplots consisted of seven types of osmoprotectants. The treatments with osmoprotectants was applied during the full flowering of the common bean. Three days after application of osmoprotectants, the treatments with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Durvillaea potatorum; Water stress; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000800697

Agronomic performance of Italian zucchini as a function of phosphate fertilization
Provedor de dados: 91
Autores: Souza,Francisco I. de; Grangeiro,Leilson C.; Souza,Valdívia de F. L. de; Gonçalvez,Francisco das C.; Oliveira,Fábio H. T. de; Jesus,Priscila M. M. de.
ABSTRACT The objective of this research was to evaluate the agronomic performance of Italian zucchini as a function of phosphate fertilization. The experiments were carried at the Rafael Fernandes Experimental Farm, Federal Rural University of the Semi-Arid Region, Mossoró, RN, Brazil, from August to November 2015 and from July to September 2016. The experimental design was randomized blocks in 2 x 5 factorial scheme, with four replicates. The treatments consisted of the combination of two cultivars (Caserta and Alícia) and five doses of phosphorus (0, 40, 78, 120 and 150 kg ha-1 of P2O5). Phosphorus doses associated with the maximum marketable yields estimated were smaller for Alícia than for Caserta in the period from August to November 2015. In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbita pepo L.; Plant nutrition; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300206

Soybean yield in the Matopiba region under climate changes
Provedor de dados: 91
Autores: Silva,Vicente de P. R. da; Silva,Roberta A. e; Maciel,Girlene F.; Souza,Enio P. de; Braga,Célia C.; Holanda,Romildo M. de.
ABSTRACT The climatic conditions along the cycle are the main factors responsible for the final production of any crop. This study aimed to evaluate the current conditions and the effects of climate change scenarios on the yield of soybean grown in the Matopiba region, located between the states of Tocantins, south and northeast of Maranhão, south of Piauí and west of Bahia, Brazil. The AquaCrop model of FAO, version 5.0, was calibrated with data of 2014 and validated with those of 2016, using climate, soil and crop management parameters collected in two experimental campaigns conducted between June and October in 2014 and 2016 in Palmas, TO, Brazil. The performance of the model was evaluated using the following statistical indicators: prediction error...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Yield; AquaCrop model; Climate variability.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100008

Biostimulants on mineral nutrition and fiber quality of cotton crop
Provedor de dados: 91
Autores: Silva,Ricardo de A.; Santos,Jerffson L.; Oliveira,Luan S.; Soares,Mauricio R. S.; Santos,Saad M. S. dos.
ABSTRACT Biostimulants are used in cotton (Gossypium hirsutum L.) to balance vegetative and reproductive growth as well as to increase cotton seed yield and fiber quality. Therefore, in order to study the efficiency of seed treatment with biostimulants, nutrition, production and technological quality for the cotton fiber, a field experiment was installed. The study was conducted at the Alvorada farm research field, in Luis Eduardo Magalhães municipality - BA. The experiment was arranged in a completely randomized block design with four replicates and five treatments (control group, untreated group, Booster®, Stimulate®, Improver® and Biozyme®). Leaf contents of nutrients, yield and technological quality of the fiber were evaluated. The results showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulators; Yield; Foliar nutrition; Gossypium hirsutum L.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201062

Performance of onion cultivars as a function of spacing between plants
Provedor de dados: 91
Autores: Santos,Jandeilson P. dos; Grangeiro,Leilson C.; Sousa,Valdívia de F. L. de; Gonçalves,Francisco das C.; Franca,Francisco D. de; Cordeiro,Carlos J. X.
ABSTRACT The objective of this study was to evaluate the performance of onion cultivars as a function of the spacing between plants. The experimental design was a complete randomized block in a 3 x 4 factorial scheme, with four replicates. The treatments were composed of the combination between three onion cultivars (Vale Ouro IPA 11, Serena and Rio das Antas) and four plant spacings (3, 6, 8 and 10 cm). The evaluated characteristics were total, marketable and unmarketable yield of bulbs, percentages of bulbs in classes 1, 2, 3 and 4, bulb mean weight, bulb dry weight. In onion cultivation, the cultivars Rio das Antas and Serena are the most indicated, with the highest marketable yields at 6 and 3 cm spacings between plants, respectively. The cultivar Vale...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium cepa L.; Planting density; Classification of bulbs; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300212

Biochar: Agronomic and environmental potential in Brazilian savannah soils
Provedor de dados: 91
Autores: Petter,Fabiano A.; Madari,Beata E.
Due to the high activity of microorganisms, the loss of soil organic matter is high in tropical regions. This loss becomes even greater if the soil is managed improperly or when there is no technology that leverages the permanence of the soil carbon by maintaining appropriate levels of organic matter, providing chemical, physical and biological soil improvements and contributing to reduce CO2 emissions to the atmosphere. Due to its aromatic structure, biochar is a highly stable form of carbon in the soil that may contribute to the reduction of greenhouse gas emissions, such as CO2, N2O and CH4, and act as a soil conditioner, improving the physical and chemical properties of the soil. Biochar may also result in increased productivity due to the improvement...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrogenic carbon; Fertility; Yield; Greenhouse gas emission.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012000700009

Agronomic performance of lettuce subjected to green manure with different leguminous species
Provedor de dados: 91
Autores: Sarmento,José J. A.; Santos,José J. F. dos; Costa,Caciana C.; Bomfim,Marinês P.
ABSTRACT Green manure is the practice of cultivation and incorporation of plants to the soil, mainly leguminous species, produced or not in situ, for the purpose of preserving and/or restoring soil organic matter and soil nutrients. To compare the effects of incorporating leguminous species in the pre-planting green manure on lettuce production, seven treatments were tested: mineral fertilization; crotalaria (Crotalaria juncea); cowpea (Vigna unguiculata); common bean (Phaseolus vulgaris); lablab bean (Dolichos lablab); pigeon pea (Cajanus cajan) and spontaneous plants. The treatments were arranged in the randomized blocks, with five repetitions. The experiment was conducted in the experimental area of the CCTA/UFCG, in the period from April to December...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Nutrient cycling; Plant nutrition; Yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000200114

Management zones in coffee cultivation
Provedor de dados: 91
Autores: Jacintho,João L.; Ferraz,Gabriel A. e S.; Silva,Fabio M. da; Santos,Sthéfany A.
ABSTRACT This study aimed to apply precision agriculture techniques in coffee production, using correlation analysis in the definition of management zones. This work was carried out in a 22-ha area of coffee (Coffea arabica L.), cv. ‘Topázio MG 1190’, which was sampled on a regular grid, using a topographic GPS, totaling 64 georeferenced samples (on average, 2.9 points per ha). Descriptive analysis was used in the data, followed by Pearson’s correlation analysis at 0.05 significance between soil chemical attributes, agronomic characteristics of the plants and altitude. It was possible to verify the correlation of soil chemical attributes, agronomic characteristics of the plants and altitude with coffee yield. Altitude was the variable most correlated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Precision agriculture; Yield; Thematic mapping.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200094

CARBOHYDRATE CONTENT AND DEVELOPMENT OF STRAWBERRY TRANSPLANTS FROM RIO GRANDE DO SUL AND IMPORTED
Provedor de dados: 94
Autores: COCCO,CARINE; GONÇALVES,MICHÉL ALDRIGHI; REISSER JUNIOR,CARLOS; MARAFON,ANDERSON CARLOS; ANTUNES,LUIS EDUARDO CORRÊA.
ABSTRACT  Obtaining high yields in strawberry crop requires the use of transplants with high sanitary and physiological quality. Thus, the present study aimed to evaluate the effect of the origin of strawberry transplants on quality, carbohydrate content and subsequent development and field production. Treatments covered four transplant origins: Argentina, Chile, Chuí (Rio Grande do Sul, Brazil) and São Francisco de Paula (Rio Grande do Sul, Brazil) and two cultivars (Camarosa and Camino Real) in experimental design of randomized blocks with four replicates, conducted between April and December 2010. Carbohydrate content in crown and roots was evaluated, as well as the growth and development of transplants and plant yield. Regardless of cultivar and origin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria x ananassa; Bare root transplants; Total sugar; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400701

‘FUJI’ APPLE TREE RESPONSE TO PHOSPHORUS FERTILIZATION
Provedor de dados: 94
Autores: NAVA,GILBERTO; CIOTTA,MARLISE NARA; BRUNETTO,GUSTAVO.
ABSTRACT  The aim of this work was to evaluate the effects of orchard fertilization with increasing rates of phosphorus (P) on yield and critical levels of P in the soil and in the leaf of ‘Fuji’ apple trees. The experiment was conducted in São Joaquim, state of Santa Catarina, southern Brazil, from 2010 to 2015, in an Inceptisol soil. The three apple orchards were planted in 2004 with the Fuji cultivar grafted on Marubakaido/ M9 rootstock and grown under a high-plant-density system (1984 trees ha-1). Annual fertilizer levels of 0, 40, 80, 120 and 160 kg ha-1 of P2O5 (as triple superphosphate) were applied to the soil surface, without incorporation, in a randomized block design with five replicates. In the first and last years (2011 and 2015), soil samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica Borkh; Yield; Critical level; Leaf analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000103001

Protected cultivation of ‘BH-65’, ‘Siluet’, ‘Sensation’,‘Intenzza’ and ‘Red Lady’ papaya cultivars in South East Spain
Provedor de dados: 94
Autores: Salinas,Irene; Pinillos,Virginia; Hueso,Juan José; Cuevas,Julián.
Abstract  Papaya (Carica papaya L.) is a tropical fruit crop of rapid growth and early yielding. In recent years, papaya cultivation has extended to subtropical regions due to its commercial interest. In South East Spain, protected cultivation is, however, mandatory to ensure the optimal development of the crop. Even more, to assure profitability, the selection of plant material well adapted to the structural constrains and the climatic conditions inside greenhouses is essential. With this objective, different papaya cultivars with diverse geographical origin, characteristics and pedigree have been compared. ‘BH-65’, ‘Siluet’, ‘Sensation’, ‘Intenzza’ and ‘Red Lady’ papaya cultivars were thus grown under a plastic greenhouse in Almería, SE Spain and their...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carica papaya L.; Fruit quality; Protected cultivation; Variety trials; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000400701

Performance of ‘Fuji Suprema’ apple trees treated with budbreak promoters, in São Joaquim-SC
Provedor de dados: 94
Autores: Pasa,Mateus da Silveira; Felippeto,João; Nava,Gilberto; Silva,Carina Pereira da; Brighenti,Alberto Fontanella; Ciotta,Marlise Nara.
Abstract  The application of rest breaking agents to overcome the lack of chilling is a common practice in apple orchards in southern Brazil. However, its necessity in areas of greater chilling accumulation, like in the city São Joaquim, Santa Catarina State (SC), has been questioned over the years. The aim of this study was to evaluate the effect of different budbreak promoters, on the performance of ‘Fuji Suprema’ apple trees, in the region of São Joaquim/SC. The study was performed at the Experimental Station of São Joaquim - Santa Catarina Agricultural Research and Extension Agency (EPAGRI), in the growing seasons of 2013/2014, 2014/2015, and 2015/2016. Plant material consisted of 10-year-old ‘Fuji Suprema apple trees grafted on the rootstock ‘M.9’ and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Dormancy; Flowering; Yield; Hydrogen cyanamide; Nitrogen-calcium solution.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100701

Performance of juice and wine grape cultivars in different training systems
Provedor de dados: 94
Autores: Pedro Júnior,Mário José; Hernandes,José Luiz; Moura,Mara Fernandes.
Abstract  The increase of rural tourism activities has led growers to use different grape cultivars for the production of wine and/or juice. Thus, the aim of this study was to evaluate the phytotechnical characteristics of grapevines and physicochemical characteristics of grape must obtained for Bordô, Isabel Precoce, BRS Violeta, Isabel and Concord cultivars in different training systems: vertical shoot position; Y-shaped trellis and V-shaped trellis with double spur cordon. The experimental design was randomized blocks for comparison of cultivars within each training system and analysis of the main components for productivity variables was carried out. BRS Violeta cultivar showed higher bunch weight values regardless of training system. Bordô cultivar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grapevine; Rustic grape; Yield; Soluble solids.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000600702

Citrus tristeza disease severity and agronomic performance of ‘Pêra’ sweet orange cultivars and selections in the North and Northwest regions of the State of Paraná, Brazil
Provedor de dados: 94
Autores: GIAMPANI,JOSÉ SEGUNDO; TAZIMA,ZULEIDE HISSANO; BABA,VIVIANE YUMI; YADA,INÊS FUMIKO UBUKATA; LEITE JÚNIOR,RUI PEREIRA.
ABSTRACT ‘Pêra’ sweet orange is the most important citrus cultivar in Brazil, but it is highly susceptible to Citrus tristeza virus (CTV), the causal agent of citrus tristeza disease. In this study, we evaluated the severity of citrus tristeza disease and its relation with the agronomic performance of seven cultivars and six selections of ‘Pêra’ sweet orange under field conditions in the North and Northwest regions of the State of Paraná, Brazil. The citrus tristeza disease severity was determined based on symptoms of stem pitting. The vegetative growth assessed in trees of all four locations for the 2012 season, and in two field plots for the 2011, 2012 and 2013 harvests, respectively. The cultivar ‘IPR 153’ (Bianchi) had the best performance concerning...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Stem pitting; Yield; Vegetative growth; Citrus tristeza virus.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000300403

PERFORMANCE OF ‘TUXPAN VALENCIA’ SWEET ORANGE GRAFTED ONTO 14 ROOTSTOCKS IN NORTHERN BAHIA, BRAZIL
Provedor de dados: 94
Autores: FRANÇA,NATIANA DE OLIVEIRA; AMORIM,MAURICIO DA SILVA; GIRARDI,EDUARDO AUGUSTO; PASSOS,ORLANDO SAMPAIO; SOARES FILHO,WALTER DOS SANTOS.
ABSTRACT  In the State of Bahia, Brazil, the citrus industry is located on the north coast with the prevalence of the combination ‘Pera’ sweet orange on ‘Rangpur’ lime. Scion-rootstock diversification may contribute to the increase of yield and the extension of harvest season, as long as to decrease the risk associated to abiotic and biotic stresses. Therefore, the performance of ‘Tuxpan Valencia’ sweet orange grafted onto 14 rootstocks was evaluated in Rio Real – BA. Planting was performed in 2006 under rainfed cultivation on cohesive ultisol and tree spacing of 6.0 m x 4.0 m. Tree size, yield and fruit quality were evaluated in the period of 2010-2014, in addition to tree survival at nine years old and drought tolerance in the field based on leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus spp.; Poncirus trifoliata; Drought tolerance; Fruit quality; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400702

Agricultural and economic characterization of guava production in Brazil
Provedor de dados: 94
Autores: Vitti,Karine Alessandra; Lima,Lilian Maluf de; Martines Filho,João Gomes.
Abstract  This study was designed to analyze the relationship between guava crop production variables in the Matão region of central São Paulo, Brazil, and to better understand the economic importance of this crop to its growers. Data were obtained through a questionnaire applied during interviews with guava growers and after the data collection, statistical analyzes were made using Chi-Square hypothesis tests. Analysis results indicate a distinct association between the variables variety and plant age, between variety and number of plants per hectare, andbetween number of plants per hectare and yield, while no association was found between yield and variety. The Paluma guava variety spaced seven meters by five meters apart and pruned throughout the entire...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chi-square test; Psidium guajava; Variety; Yield; Economic importance.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000100502

THE PEAR TREE RESPONSE TO PHOSPHORUS AND POTASSIUM FERTILIZATION
Provedor de dados: 94
Autores: BRUNETTO,GUSTAVO; NAVA,GILBERTO; AMBROSINI,VÍTOR GABRIEL; COMIN,JUCINEI JOSÉ; KAMINSKI,JOÃO.
The aim of this study was to evaluate the response to phosphorus (P) and potassium (K) fertilization and to establish the critical levels of P and K in the soil and in the plant tissue in pear trees. Two experiments were conducted in São Joaquim (SC), Brazil. In experiment 1, the plants received annually the application of increasing rates of phosphate fertilizer (0, 40, 80, 120 and 160 kg P2O5 ha-1), while in experiment 2, increasing rates of potassium fertilizer (0, 40, 80, 120 and 160 kg K2O ha-1) were applied annually. In the two experiments, soil was collected annually from the 0-10, 10-20 and 0-20 cm layers, and the available P (experiment 1) and exchangeable K (experiment 2) content was analyzed. Whole leaves were collected annually, which were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus communis L.; Sufficiency level; Phosphate fertilization; Potassium fertilization; Yield.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452015000200507

PRODUCTIVE PERFORMANCE OF ‘FUJI’ APPLE TREES ON ‘JM’ SERIES ROOTSTOCKS, IN SÃO JOAQUIM/SC
Provedor de dados: 94
Autores: PASA,MATEUS DA SILVEIRA; BRIGHENTI,ALBERTO FONTANELLA; KATSURAYAMA,JOSÉ MASANORI; SILVA,CARINA PEREIRA DA; CIOTTA,MARLISE NARA; CARRA,BRUNO.
ABSTRACT  Worldwide, research has developed new apple rootstocks that induce higher yields, pest resistance and adaptation to different climatic and soil conditions. Thus, the performance of these new rootstocks in the conditions of the main regions that grow apples should be investigated. The objective of this study was to evaluate the performance of ‘Fuji’ trees on different rootstocks of JM series and M.7 in the region of São Joaquim, SC. The experiment was performed from 2010 to 2015. Plant material consisted on the cultivar Fuji grafted on the rootstocks JM.2, JM.3, JM.5, JM.7, JM.8 and M.7, planted as single axis trees in the winter of 2002, and spaced at 5 x 1.5m. Trees were trained in a central-leader system and arranged in a randomized complete...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Malus domestica Borkh; Yield; Yield efficiency; Fruit size.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000701001

Quantitative and qualitative characteristics of the non-carcass components and the meat of lambs fed sunflower seeds and vitamin E
Provedor de dados: 96
Autores: Lima,Natália Ludmila Lins; Silva Sobrinho,Américo Garcia da; Almeida,Fabiana Alves de; Endo,Viviane; Zeola,Nivea Maria Brancacci Lopes; Almeida,Amélia Katiane de; Sampaio,Alexandre Amstalden Moraes.
The objective of this investigation was to evaluate the weight and percentage of the non-carcass components and the mineral content (macro minerals and trace minerals), crude protein, ether extract, moisture and vitamin E of the heart, liver, tongue, lungs, reticulum, kidneys and meat from the longissimus dorsi of lambs in feedlot finishing. Thirty-two non-castrated Ile de France male lambs, fed diets containing sunflower seeds and vitamin E from 15 to 32 kg of body weight were allotted in a completely randomized design in a 2 × 2 factorial arrangement. The weight of the gastrointestinal tract was higher in the lambs fed diets containing vitamin E (10%). No difference was observed in the liver as to the mineral matter, crude protein, ether extract,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Minerals; Organs; Viscera; Vitamin E; Yield.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100008

Effects of stocking density and artificial substrates on yield and water quality in a biofloc shrimp nursery culture
Provedor de dados: 96
Autores: Legarda,Esmeralda Chamorro; Barcelos,Suhellen Santos; Redig,Joselle Cursino; Ramírez,Norha Constanza Bolívar; Guimarães,Ariane Martins; Santo,Carlos Manoel do Espírito; Seiffert,Walter Quadros; Vieira,Felipe do Nascimento.
ABSTRACT The objective of this study was to evaluate the effect of different stocking densities and the presence/absence of two artificial substrates on water quality and production rates of marine shrimp in a biofloc shrimp nursery culture. Two experiments were performed: different stocking densities with mosquito netting substrate and the presence/absence of polyester-type substrate. The first experiment lasted 38 days, and shrimp at an initial weight of 0.013±0.010 g were stocked in 24 tanks. The second experiment lasted 35 days, and shrimp at an initial weight of 0.037±0.002 g were stocked in six tanks. Weekly biometric measurements were performed to adjust the amount of feed. Suspended solids were higher at a density of 6000 PL m−3 and mosquito...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial substrates; Biofloc technology; Litopenaeus vannamei; Stocking density; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100104

Genetic improvement of silage maize: predicting genetic gain using selection indexes and best linear unbiased prediction
Provedor de dados: 124
Autores: Crevelari,Jocarla Ambrosim; Pereira,Messias Gonzaga; Azevedo,Flávio Henrique Vidal; Vieira,Ricardo Augusto Mendonça.
ABSTRACT The objective of this study was to evaluate four selection indexes and best linear unbiased prediction (BLUP) for predicting genetic gain in maize hybrids used for silage. The genetic gain was compared between four selection indexes and BLUP. Nineteen topcross hybrids and five controls were evaluated using a completely randomized block design with four replicates in two areas located in Campos dos Goytacazes and Itaocara, Rio de Janeiro, Brazil, in the growing season 2013-2014. Plant height, first ear height, average stem diameter, grain yield at the silage stage, and green mass yield were evaluated. The genetic gain was predicted using the selection indexes proposed by Pesek and Baker, Smith and Hazel, Mulamba and Mock, Willians, and BLUP. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Topcrosses; Tester; Hybrids; Yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200197

Soil physical attributes in integrated bean and sheep system under nitrogen levels
Provedor de dados: 124
Autores: Andreolla,Veruschka Rocha Medeiros; Moraes,Aníbal de; Bonini,Andreia Kusumota; Deiss,Leonardo; Sandini,Itacir Eloi.
Integrated crop-livestock systems (ICLS) can promote higher grain and meat/milk yield as well as reduce soil degradation risks. Thus, this study aimed to evaluate the influence of grazing sheep with moderate intensity and nitrogen doses on soil physical attributes, and bean crop yield (Phaseolus vulgaris Lam.) under rotation with summer corn crop (Zea mays Lam.) and winter pasture with oats (Avena sativa Lam) and ryegrass (Lolium multiflorum Lam.) The experimental design was completely randomized blocks with split-plot; the plots were nitrogen doses and the split-plots were grazing presence or absence. The treatments were nitrogen doses of 0, 75, 150 and 225 kg ha-1 applied on ryegrass and white oat pasture in winter followed by bean crop. Soil density,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Integrated crop-livestock system; Soil compaction; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500008

Sunflower fertigated with potassium fertilization in two agricultural seasons in the Brazilian semiarid region
Provedor de dados: 124
Autores: Santos,Allysson Pereira dos; Tartaglia,Francilene de Lima; Souza,Almir Rogerio Evangelista de; Santos,Manoel Galdino dos; Silveira,Lindomar Maria da; Barros Júnior,Aurélio Paes.
ABSTRACT The objective of this study was to evaluate the effect of potassium doses on the production components of sunflower cultivars grown in the semiarid climate region. The experiment was carried out in two agricultural seasons, in 2016 and 2017, at the Rafael Fernandes Experimental Farm, Mossoró, RN, Brazil. The experimental design used was randomized blocks, in split plots, with four replicates. Five potassium doses were evaluated in the plots: 0, 30, 60, 90 and 120 kg ha-1 of K2O, and four sunflower cultivars were evaluated in the subplots: Aguará 6, Altis 99, Multissol and BRS 122. The evaluated characteristics were: K content in the diagnostic leaf (KDL), thousand-achene weight (TAW), achene yield (AY), oil content (OC) and oil yield (OY)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus L.; Potassium doses; Plant nutrition; Yield; Oilseed crop.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200403

Establishment of intercropping of beet and chicory depending on soil management
Provedor de dados: 124
Autores: Coutinho,Pablo Wenderson Ribeiro; Oliveira,Paulo Sérgio Rabello de; Echer,Márcia de Moraes; Cadorin,Danielle Acco; Vanelli,Jaqueline.
ABSTRACT This study aimed to evaluate the productivity and quality characteristics of beet and chicory based on management of straw and intercropping period of establishment. The experiment was conducted in the organic horticulture sector of Unioeste, in a design of randomized blocks with four replications, where the treatments were arranged in 2 x 5 and 2 x 8 factorial schemes. The first factorial consisted of the straw mulch management (with and without incorporation of the gray velvet bean straw) and the intercropping period of establishments and beet and chicory monocrops (0; 7; 14 and 21 days after transplanting beet). The second factorial was composed of the straw mulch management (with and without incorporation) and the cultivation of chicory...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta vulgaris; Cichorium endívi; Vegetal cover; Yield; Post-harvest.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400674

Evaluation of NPK doses on the production of papaya 'Caliman 01'
Provedor de dados: 124
Autores: Albuquerque,Gustavo Henrique da Silva; Soares,Ismail; Aquino,Boanerges Freire de; Miranda,Fabio Rodrigues de; Dutra,Indalécio.
ABSTRACT The study aimed to evaluate the effect of different NPK doses on the yield components of papaya hybrid 'Caliman 01'. The experiment was carried at the company WG Fruticultura, located in the Chapada do Apodi region. Five nitrogen doses (94, 590, 837, 1088 and 1575 kg N ha-1), five phosphorus doses (10, 72, 96, 133 and 195 kg P2O5 ha-1) and five potassium doses (75, 527, 752, 978 and 1429 kg K2O ha-1), were combined according to the experimental matrix Pan Puebla II, in 16 combinations and distributed in a randomized block design, with five repetitions. The plots consisted of six papaya plants and the four central plants were evaluated. The fertilizers urea, monoammonium phosphate and potassium chloride were used as NPK sources, respectively. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carica papaya L.; Fertilization; Yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000400529

Morphological and productive aspects of lettuce in low altitude and latitude
Provedor de dados: 124
Autores: Cardoso,Sara Santos; Guimarães,Marcelo de Almeida; Lemos Neto,Hozano de Souza; Tello,Jean Paulo de Jesus; DoVale,Júlio César.
ABSTRACT Lettuce is considered a crop of mild climate and its production in regions of low altitude and latitude is impaired due to the high temperatures and the predominance of long days. Therefore, the aim of this study was to evaluate the behavior of lettuce cultivars in such conditions. An experiment was conducted at the Horta Didática of the Federal University of Ceará, Campus do Pici, in Fortaleza. Nine lettuce cultivars from three commercial groups were used and distributed in a randomized block design, with four replications. The following qualitative traits were evaluated: bolting, head formation, leaf texture, anthocyanin and phytosanitary status for pest and disease infestation. Regarding the quantitative traits, plant height, plant diameter,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa L.; Bolting; Yield; Commercial groups.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400644

Production of paulista gherkin using trellis net support
Provedor de dados: 63
Autores: Modolo,Valéria A.; Costa,Cyro Paulino da.
Paulista gherkin is a new gherkin type obtained by crossing Cucumis anguria var. anguria x C. anguria var. longaculeatus. It differs from common gherkin in its fruits and leaves. Elite lines of Paulista gherkin present similar performance for total yield and fruit weight but some have distinctive characteristics, including fruit and leaf attributes. The combination of these characteristics through production of Paulista gherkin hybrids could be an alternative for fruit quality and/or yield improvement. The purpose of the present work was to compare the yield of Paulista gherkin lines and their hybrids grown on a trellis net under field conditions. Four lines and their six single-cross hybrids were evaluated for yield and fruit production using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis anguria var. anguria; Vegetable crop; Management; Yield.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100008

Agronomic and molecular characterization of wild germplasm Saccharum spontaneum for sugarcane and energycane breeding purposes
Provedor de dados: 63
Autores: Silva,Jorge Alberto Gonçalves da; Costa,Paulo Mafra de Almeida; Marconi,Thiago Gibbin; Barreto,Everton Jean da Silva; Solís-Gracia,Nora; Park,Jon-Won; Glynn,Neil Charles.
ABSTRACT: Among the species related to sugarcane, Saccharum spontaneum (L.) is a wild species with the greatest potential as a source of genetic variation to cope with biomass production in harsh environments. Due to its high yield, early vigor, ratooning ability, low input requirements and tolerance to various biotic and abiotic stresses, sugarcane breeders have shown interest in its contribution, as a donor of genes, to the development of high biomass energy canes. The conservation, evaluation and utilization of the genetic variability of S. spontaneum available in germplasm collections are critical for breeding, but, given the aggressive rhizomatous growth habit and the ability to propagate via seed dispersal, S. spontaneum is classified as a noxious...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular markers; Yield; Bioenergy; Abiotic stress; Core collection.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000400329

Genotypic variation of traits related to quality of cassava roots using affinity propagation algorithm
Provedor de dados: 63
Autores: Oliveira,Eder Jorge de; Santana,Fernanda Alves; Oliveira,Luciana Alves de; Santos,Vanderlei da Silva.
The conservation, sustainable evaluation and use of cassava (Manihot esculenta Crantz) genetic resources are essential to the development of new commercial varieties. This study aimed to evaluate the quality of cassava roots and to estimate genetic variation and clustering in cassava germplasm using the Affinity Propagation algorithm (AP), which is based on the concept of "message passing" between data points. AP finds "exemplars" of each group and members of the input set representative of clusters. The genotypic data of 474 cassava accessions were evaluated over a period of two years for starch yield (StYi), root dry matter (DMC), amylose content (AML), and the level of cyanogenic compounds (CyC). The AP algorithm enabled the formation of nine diversity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germplasm; Amylose content; Cyanogenic compounds; Yield.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000100053

Herbicide selectivity by differential metabolism: considerations for reducing crop damages
Provedor de dados: 63
Autores: Carvalho,Saul Jorge Pinto de; Nicolai,Marcelo; Ferreira,Renato Rodrigues; Figueira,Antonio Vargas de Oliveira; Christoffoleti,Pedro Jacob.
Herbicide selectivity is an agricultural technology largely exploited in chemical strategies of weed control. The joint action of several protection mechanisms avoids phytotoxicity from herbicide treatment, maintaining the level of agronomically accepted damage to a minimum, or even totally avoiding them. The major mechanism of herbicide selectivity derives from the differential metabolism between weed and crop plant species, with weeds presenting a limited ability to perform it under agronomically recommended conditions. In this case, phytotoxicity can be interpreted as an overcoming of the maximum protection capacity offered by the mechanisms of selectivity, or when considering metabolism as the main factor, the overcoming of the inherent plant ability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytotoxicity; Injuries; Yield; Experimental design; Crop management.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100020

Soil compaction and fertilization in soybean productivity
Provedor de dados: 63
Autores: Beutler,Amauri Nelson; Centurion,José Frederico.
Soil compaction and fertilization affect soybean development. This study evaluated the effects of soil compaction and fertilization on soybean (Glycine max cv. Embrapa 48) productivity in a Typic Haplustox under field conditions in Jaboticabal, SP, Brazil. A completely randomized design with a 5 x 2 factorial layout (compaction vs. fertilization), with four replications in each treatment, was employed. Each experimental unit (replicate) consisted of a 3.6 m² useful area. After the soil was prepared by cultivation, an 11 Mg tractor passed over it a variable number of times to create five levels of compaction. Treatments were: T0= no compaction, T1= one tractor pass, T2= two, T4= four, and T6= six passes, and no fertilizer and fertilizer to give soybean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bulk density; Penetration resistance; Fertilizer; Yield.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600010

Oxisol subsurface chemical attributes related to sugarcane productivity
Provedor de dados: 63
Autores: Landell,Marcos Guimarães de Andrade; Prado,Hélio do; Vasconcelos,Antônio Carlos Machado de; Perecin,Dilermando; Rossetto,Raffaella; Bidoia,Márcio Aurélio Pitta; Silva,Marcelo de Almeida; Xavier,Mauro Alexandre.
In spite of the great homogeneity found in the morphological characteristics of Oxisols, there is great chemical diversity in subsurface layers of these soils. Studies indicate that crop yield presents significant correlation with the chemical attributes of the subsurface, which, are more stable than attributes found in the plough layer, subject to greater alterations as a consequence of agricultural exploration. This work evaluated the effects of subsurface chemical attributes of Oxisols of the South Central region of Brazil, on the yield of sugarcane clones and of variety RB72454, during the first, second and third cropping cycles. Productivity data were obtained between 1993 and 1998. Soils were characterized in terms of their mechanical analysis and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yield; Soils; Linear models; Chemical analysis.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400020

Growth analysis of chickpea (Cicer arietinum L.)
Provedor de dados: 63
Autores: Nogueira,S.S.S.; Nagai,V.; Braga,N.R.; Novo,M. Do C.S.S.; Camargo,M.B.P.
An experiment to study the growing pattern of a chickpea variety, IAC-Marrocos, was carried out at the Monte Alegre Experimental Station, SP, during 1987 and 1988. The dry matter production of all parts of the plant, as well the leaf area index, were weekly evaluated. Exponential quadratic models of regression were adjusted to total dry matter, leaf dry matter and leaf area index, and a linear model to dry matter of grain. Based on the growth analysis it was concluded that the chickpea is a rustic eatable plant that can be recommended as an alternative winter crop for similar climatic conditions as those of the experiment.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickpea; Growing indexes; Yield.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000300008

Bioregulator application, agronomic efficiency, and quality of soybean seeds
Provedor de dados: 63
Autores: Ávila,Marizangela Rizzatti; Braccini,Alessandro de Lucca e; Scapim,Carlos Alberto; Albrecht,Leandro Paiola; Tonin,Telmo Antônio; Stülp,Marcibela.
The application of vegetal bioregulators has shown promising results, mainly in cultures that have already reached a high level of technology. Based on this context an experiment was carried out with the objective of evaluating agronomic traits of plants, such as yield and quality of seeds, produced by applying bioregulators to a soybean crop. For this purpose, the following treatments were carried out: before sowing - seed treatment (25, 50 and 75 mL for 100 kg-1 seeds); during sowing time - spraying on the sowing lines (pulverization onto the sowing lines) (50, 100 and 150 mL ha-1); between stages V5 and V6 (25, 50 and 75 mL ha-1); and the control - no treatment. Emergence speed, final seedling emergence, number of pods and seeds per plant, average...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulator; Yield; Vigor; Germination.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600006

Prunus hybrids rootstocks for flat peach
Provedor de dados: 63
Autores: Legua,Pilar; Pinochet,Jorge; Moreno,María Ángeles; Martínez,Juan José; Hernández,Francisca.
Peach (Prunus persica L.) is the most important stone fruit tree grown in Spain and is the second most important fruit crop in Europe. The influence of eight Prunus rootstocks (GF-677, Krymsk® 86, PADAC 97-36, PADAC 99-05, PADAC 9912-03, PADAC 0024-01, PAC 0021-01 and PAC 0022-01) on vigor, yield and fruit quality traits of 'UFO 3' flat peach cultivar was studied. The highest trunk cross sectional area was exhibited by GF-677 and the lowest by PADAC 99-05, while intermediate values were found on the other rootstocks. The highest yield efficiency was found on PADAC 99-05, PAC 0021-01, PAC 0022-01 and PADAC 0024-01 and the lowest was shown on Krymsk® 86. The fruit quality parameters measured were color, fruit and stone weights, equatorial diameter, pulp...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SSC; Fruit weight; Rootstock; Acidity; Yield.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000100003

Trifoliata hybrids rootstocks for 'Lane Late' navel orange in Spain
Provedor de dados: 63
Autores: Legua,Pilar; Bellver,Ricardo; Forner,Juan Bautista; Forner-Giner,Maria Angeles.
Carrizo citrange [Citrus sinensis (L.) Osb. × Poncirus trifoliata (L.) Raf.] and Cleopatra mandarin (C. reshni Hort. ex Tan.) are the most important rootstocks used in Spain, but they are problematic and it is necessary to search for new rootstocks with better all-round performance. The performance of 'Lane Late' navel orange [Citrus sinensis (L.) Osb] on ten rootstocks was determined in the South of the province of Alicante (Spain). They are Carrizo citrange, Cleopatra mandarin and eight new hybrids obtained at the Instituto Valenciano de Investigaciones Agrarias in Valencia (Spain): 020324 [Troyer citrange (C. sinensis × P. trifoliata) × Cleopatra mandarin], Forner-Alcaide 418 (F&amp;A 418) [Troyer citrange × common mandarin (C. deliciosa Ten.)],...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus rootstock; Fruit quality; Tree size; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000500006

Manganese and zinc leaf application on common bean grown on a "Cerrado" soil
Provedor de dados: 63
Autores: Teixeira,Itamar Rosa; Borém,Aluízio; Araújo,Geraldo Antônio de Andrade; Fontes,Renildes Lúcio Ferreira.
The occurrence of micronutrient deficiencies, mainly of manganese (Mn) and zinc (Zn) in "cerrado" soils, has been increasing in several crops, including bean. Such a problem is caused by high rates of liming material applied entirely on the soil surface. In this study, the effects of the leaf application of Mn and Zn rates were evaluated. Three experiments were carried out: two in greenhouse and one under field conditions. The greenhouse experiments were set up using a randomized block design and a 5 x 5 factorial, with three replicates, consisting of five rates of Mn (0, 75, 150, 300, and 600 g ha-1) and five rates of Zn (0, 50, 100, 200, and 400 g ha-1) applied via leaves at the 25th day, or both alternatively parceled at 25 and 35 days after emergency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Yield; Mineral nutrition; Micronutrients.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100013

Field performance of "marsh seedless" grapefruit on trifoliate orange inoculated with viroids in Brazil
Provedor de dados: 63
Autores: Stuchi,Eduardo Sanches; Silva,Simone Rodrigues da; Donadio,Luiz Carlos; Sempionato,Otávio Ricardo; Reiff,Eduardo Toller.
Some viroids reduce citrus tree growth and may be used for tree size control aiming the establishment of orchards with close tree spacing that may provide higher productivity than conventional ones. To study the effects of citrus viroids inoculation on vegetative growth, yield and fruit quality of 'Marsh Seedless' grapefruit (Citrus paradisi Macf.) grafted on trifoliate orange [Poncirus trifoliata (L.) Raf.], an experiment was set up in January 1991, in Bebedouro, São Paulo State, Brazil. The experimental design was randomized blocks with four treatments with two plants per plot: viroid isolates Citrus Exocortis Viroid (CEVd) + Hop stunt viroid (HSVd - CVd-II, a non cachexia variant) + Citrus III viroid (CVd-III) and Hop stunt viroid (HSVd - CVd-II, a non...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Yield; Fruit quality; Exocortis; Dwarfing.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600004

Performance of new Hevea clones from IAC 400 series
Provedor de dados: 63
Autores: Gonçalves,Paulo de Souza; Silva,Marcelo de Almeida; Aguiar,Adriano Tosoni da Eira; Martins,Maria Alice; Scaloppi Junior,Erivaldo José; Gouvêa,Lígia Regina Lima.
The Hevea breeding program of Instituto Agronômico de Campinas (IAC) has completed clonal evaluation on the following series: IAC 100, IAC 200 and IAC 300. The performance of 22 clones of Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg., evolved at IAC, over a period of eleven years was evaluated in the Western Central part of the São Paulo State, Brazil. Among these 22 new clones, six were intraspecific hybrid clones (IAC 400, IAC 404, IAC 405, IAC 406, IAC 410, IAC 412) and the remaining are primary those resulted from selected ortets within half-sib progenies. An old popular clone RRIM 600, of Malaysian origin, was used as the control. The trial was laid out in a randomized block design with three replications. Yield performance over a period of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Yield; Vigour; Brown bast; Bark thickness.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300005

Environmental group identification for upland rice production in central Brazil
Provedor de dados: 63
Autores: Heinemann,Alexandre Bryan; Sentelhas,Paulo Cesar.
Upland rice (Oryza sativa L.) production is basically concentrated in four central Brazilian States, Mato Grosso, Goiás, Rondônia and Tocantins. To reduce the genotype and environment (G × E) interactions, the classification of environment groups was proposed. The goal of this study explores possibilities to adjust the upland rice regional breeding systems to optimally fit to the range of environments they are targeting, based on a historical yield data set of the Brazilian Geographic and Statistics Institute (IBGE, www.ibge.gov.br/home/) from 54 microregions. The specific objectives of this study were: (i) to identify and classify environmental groups in the Brazilian upland rice production area; (ii) to validate these environmental groups using yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment classification; Breading program; Cluster analysis; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000500005

Soil respiration in cucumber field under crop rotation in solar greenhouse
Provedor de dados: 63
Autores: Liang,Yinli; Bai,Caihong; Mu,Lan; Zhou,Maojuan.
Crop residues are the primary source of carbon input in the soil carbon pool. Crop rotation can impact the plant biomass returned to the soil, and influence soil respiration. To study the effect of previous crops on soil respiration in cucumber (Cucumis statirus L.) fields in solar greenhouses, soil respiration, plant height, leaf area and yield were measured during the growing season (from the end of Sept to the beginning of Jun the following year) from 2007 to 2010. The cucumber was grown following fallow (CK), kidney bean (KB), cowpea (CP), maize for green manure (MGM), black bean for green manure (BGM), tomato (TM), bok choy (BC). As compared with CK, KB, CP, MGM and BGM may increase soil respiration, while TM and BC may decrease soil respiration at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf area; CO2 emission; Plant height; Previous crop; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000400012

Honey bee visitation to sunflower: effects on pollination and plant genotype
Provedor de dados: 63
Autores: Chambó,Emerson Dechechi; Garcia,Regina Conceição; Oliveira,Newton Tavares Escocard de; Duarte-Júnior,José Barbosa.
Sunflower (Helianthus annuus L.) is an allogamic plant, which needs insects on flowering, especially the honeybees for seed production. Collecting nectar and pollen by honeybees in agricultural crops is essential to apiculture, as well as a better understanding of plant biology. The foraging behavior of Africanized Apis mellifera L. (Hymenoptera, Apidae) and its efficiency of pollination on seed yield of sunflower genotypes (open pollination and restricted pollination) were evaluated. There were peaks of visits by A. mellifera for nectar collection on the 2nd and 3rd flowering days between 7h00 and 8h30. The average density of A. mellifera during increased visitation ranged from 2.27 to 2.94 bees per capitulum. Nectar collecting bees were more frequent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apis mellifera; Pollinators; Floral resources; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000600007

Production and vegetative growth of coffee trees under fertilization and shade levels
Provedor de dados: 63
Autores: Jaramillo-Botero,Catalina; Santos,Ricardo Henrique Silva; Martinez,Herminia Emilia Prieto; Cecon,Paulo Roberto; Fardin,Merci Pereira.
It is difficult to separate the effects of light reduction versus nutrient and water competition in agroforestry systems. The objective of this experiment was to evaluate the effect of shading and fertilizer supply on the vegetative development and yield of Coffea arabica over six years. The coffee trees were covered with shade screens (photosynthetically active radiation reduction up to 48%) and fertilized from 100 to 40% of the recommended amount from 2001 on. Leaf area, number of leaves, number of nodes, leaf area per branch and, yield were determined. Although no effect of fertilization was found, shading influenced the number of nodes, leaf area and production from the third year on. The number of nodes and yield decreased as shading increased. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Bienniallity; Plant growth and development; Yield.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000600004

Rootstock on vine performance and wine quality of ‘Syrah’ under double pruning management
Provedor de dados: 63
Autores: Dias,Frederico Alcântara Novelli; Mota,Renata Vieira da; Souza,Claudia Rita de; Pimentel,Rodrigo Meirelles de Azevedo; Souza,Laís Cristina de; Souza,André Luiz de; Regina,Murillo de Albuquerque.
ABSTRACT In the Brazilian Southeast, the production of high quality wines is attained by a new management approach called double pruning. This management changes the harvesting of wine grape (Vitis vinifera L.) from wet summer to dry winter through a two pruning procedures carried out during the year. The first pruning is done during the winter to induce a vegetative cycle (all clusters are removed) and a second pruning is done during the summer to induce the reproductive cycle. In this study, ten different rootstocks were compared in order to optimize yield and wine quality of Syrah vines conducted under autumn-winter season by double pruning approach. Syrah grapevines grafted onto ‘Rupestris du Lot’ and ‘IAC 766’ showed the highest pruning weight, while...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera; Autumn-winter season; Vigor; Yield; Berry quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000200134

Recurrent selection in inbred popcorn families
Provedor de dados: 63
Autores: Daros,Máskio; Amaral Jr.,Antônio Teixeira do; Pereira,Messias Gonzaga; Santos,Fabrício Santana; Gabriel,Ana Paula Cândido; Scapim,Carlos Alberto; Freitas Jr.,Silvério de Paiva; Silvério,Lucas.
Although much appreciated in Brazil, commercial popcorn is currently cropped on a fairly small scale. A number of problems need to be solved to increase production, notably the obtaintion of seeds with good agronomic traits and good culinary characteristics. With the objective of developing superior genotypes in popcorn, a second cycle of intrapopulation recurrent selection based on inbred S1 families was carried out. From the first cycle of selection over the UNB-2U population, 222 S1 families were obtained, which were then divided into six sets and evaluated in a randomized complete block design with two replications within the sets. Experiments were carried out in two Brazilian localities. The analysis of variance revealed environmental effects for all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding program; S1 families; Yield; Popping expansion.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600008

Winery distillery waste compost effect on the performance of melon crop under field conditions
Provedor de dados: 63
Autores: Villena,Raquel; Castellanos,María Teresa; Cartagena,María Carmen; Ribas,Francisco; Arce,Augusto; Cabello,María Jesús; Requejo,María Isabel.
ABSTRACT: The substantial generation of organic waste together with increasing interest in developing sustainable agriculture heralds an opportunity for mobilizing the recycling of these materials as a source of organic matter and nutrients into a viable management strategy option. A field experiment was conducted to evaluate the use of compost derived from waste produced by the winery and distillery industries in a drip-irrigated melon crop traditionally grown in the area where these wastes are generated. A randomized complete block design was used with four treatments consisting of three different dose levels of compost: 7 (D1), 13 (D2) and 20 (D3) t ha−1 and a control (D0) without the application of compost. The effects of these treatments on plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Growth; Yield; Nitrogen; Phosphorus.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600494

Remediation of salt-affected soil by the addition of organic matter: an investigation into improving glutinous rice productivity
Provedor de dados: 63
Autores: Cha-um,Suriyan; Kirdmanee,Chalermpol.
Soil salinity may limit plant growth and development, and cause yield loss in crop species. This study aimed at remediating saline soil using organic matter (OM) treatment, before the cultivation of RD6 rice (Oryza sativa L. spp. indica). Physiological and morphological characters of rice plants, as well as crop yield, were evaluated from salt-affected soil with varying levels of salinity. The chlorophyll a and total chlorophyll pigments of rice plants grown in salt-affected soil (2% salt level) with the application of OM were maintained better than in plants grown without OM treatment. The degree of reduced photosynthetic pigments in rice plants was dependent on the level of salt contamination. Pigment content was positively related to maximum quantum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyll a fluorescence; Inland salinity; Pigment stabilization; Net photosynthetic rate; Yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000400003

Agronomic responses of grapevine ‘Chenin Blanc’ as a function of training systems and rootstocks
Provedor de dados: 63
Autores: Leão,Patrícia Coelho de Souza; Chaves,Agnaldo Rodrigues de Melo.
ABSTRACT The aim of this research was to study the influence of training system and rootstock on the yield, vigor and physiology of the ‘Chenin Blanc’ grapevine at São Francisco Valley, northeastern Brazil. An experiment was carried out on eight harvests, from 2013 to 2017, in Petrolina, in the state of Pernambuco. Grapevines were grown under two training systems, lyre and espalier, and five rootstocks: ‘IAC 572’, ‘IAC 313’, ‘IAC 766’, ‘Paulsen 1103’ and ‘SO4’, using a split-plot randomized block design, with training systems assigned to the main plot and the rootstock assigned to the subplot. Lyre favored an increase in the number of bunches, branches and leaf mass in the harvest of the first semester of the year, while in the second semester there were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera; Tropical viticulture; Yield; Vigor.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000100601

Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching
Provedor de dados: 63
Autores: Moura,Emanoel Gomes de; Coelho,Kátia Pereira; Freitas,Idelfonso Colares de; Aguiar,Alana das Chagas Ferreira.
In the humid tropic, chemical and physical soil properties that decrease soil's nutrient availability and increase oxygen deficiency are important as restrictions to crop growth. The objective of this study was to evaluate the relations between plant growth and chemical and physical fertility indicators of an Ultisol developed from sediments of the Itapecuru Formation in Central-Northern state of Maranhão, Brazil. An experiment was established with randomized block design, four replicates, and six treatments: 6.0 Mg ha-1 mulch with or without liming; 3.0 Mg ha-1 mulch with or without liming; bare soil with or without liming. Determinations in the plants included leaf area index, net assimilation rate, and the yield parameters: mean number and weight of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Growth; Yield; Effective porosity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600012

Agrometeorological models for 'Valencia' and 'Hamlin' sweet oranges to estimate the number of fruits per plant
Provedor de dados: 63
Autores: Paulino,Silvia Elisandra Pasqua; Mourão Filho,Francisco de Assis Alves; Maia,Aline de Holanda Nunes; Avilés,Tatiana Eugenia Cantuarias; Dourado Neto,Durval.
The development of models that allow forecasting yield tendencies is important to all sectors of the citrus industry. This work evaluated the influence of meteorological variables in different phases of the crop cycle in order to propose empirical models to estimate the number of fruits per plant (NFP) of 'Valencia' and 'Hamlin' sweet oranges. NFP sampling data from the citrus juice industry of the State of São Paulo, on the total of 15 harvests (1990/91 to 2004/05), classified into three age classes, and meteorological data of maximum and minimum air temperature and rainfall of Limeira, SP, Brazil, were utilized. Correlation coefficients were initially computed between the number of fruits per plant and each meteorological variable used for water balance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Harvest; Modeling; Yield.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100001

Soil tillage and sugarcane planting: an assessment of cost and economic viability
Provedor de dados: 63
Autores: Amorim,Fernando Rodrigues de; Patino,Marco Tulio Ospina; Santos,David Ferreira Lopes.
ABSTRACT Yield and profitability levels in sugarcane crops demonstrate the importance of the agricultural practices adopted, especially for soil preparation and planting systems. This study evaluated the costs involved in 40 alternative methods for the establishment of sugarcane crops resulting from the combination of eight soil preparation systems and five planting options, followed by an assessment of the economic viability of sugarcane production for suppliers and sugar mills. Data were collected from 31 sugar mills and 42 suppliers in São Paulo State, Brazil, from the 2016/17 season. The cost analysis and discounted cash flow analysis were used to calculate economic viability. Localized soil preparation with a fixed application rate of inputs (soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp; Mechanization; Variable rate; Yield; Profitability.
Ano: 2022
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162022000100101

Late nitrogen application enhances spikelet number in indica hybrid rice (Oryza sativa L.)
Provedor de dados: 63
Autores: Zhou,Wei; Lv,Tengfei; Chen,Yong; Hu,Jianfeng; Zhang,Qiang; Ren,Wanjun.
ABSTRACT To increase rice yield potential, field experiments were conducted in farmers’ paddies in 2011 and 2012 to evaluate the effects of different nitrogen applications on the yield and panicle components of three typical indica hybrid rice varieties in Sichuan Province. The number of grains per panicle resulting from late nitrogen application (LA) was 12 % greater than that obtained from traditional nitrogen application (TA); this increase was the main source of improvements in yield. The number of surviving and differentiated spikelets (NSS and NDiS) resulting from LA was significantly higher than that measured under TA, especially for the Fyou498 cultivar, where the NSS and NDiS increased by 15 % and 14 %, respectively. Compared with TA, the number...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Panicle; Grain number; Branch; Degenerated rate; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000200127

การปรับปรุงความอุดมสมบูรณ์ของดินนาในการผลิตข้าวโดยใช้ปุ๋ยเคมีและวัสดุเหลือใช้จากอุตสาหกรรมผลิตน้ำตาลทราย
Provedor de dados: 106
Autores: Wiwat Ingkapradit; Jaturong Pipatpiriyanon; Win-U  Wong-Ubon.
Filter cake is by - product of cane sugar manufacture. It consists of plant nutrient which is useful for soil fertility improvement. According to low fertility of most paddy soils, an experiment had been conducted with combination of chemical fertilizer application and filter cake incorporation for soil fertility and yield improvement in two different soil types in wet season during 1992-2002. This experiment was 4x3 factorial in randomized complete block design, 3 replications, 2 factors with 4 filter cake rates at 0, 500, 1,000 and 1,500 kg/rai and 3 nitrogen rates at 0, 3 and 6 kg N/rai for photo sensitive rice cultivar (Khao Dawk Mali 105) planted in Koksamrong Soil Series (sandy loam, mixed isohyperthermic, typic tropaqualfs) at Lop Buri Rice Research...
Tipo: Collection
Palavras-chave: Paddy soil; Soil fertility improvement; Rice production; Filter cake; Chemical fertilizer; KDML 105; Chainat 1; Yield; By products; Wastes; ข้าว; การปรับปรุงความอุดมสมบูรณ์ของดิน; กากตะกอนน้ำตาล; ปุ๋ยเคมี; พันธุ์ขาวดอกมะลิ 105; พันธุ์ชัยนาท 1; ผลผลิต; วัสดุเหลือใช้; ผลผลิต; ดินนา; อุตสาหกรรมผลิตน้ำตาลทราย.
Ano: 2008
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5101

อิทธิพลของวิธีการย้ายกล้าในระบบการปลูกข้าวอินทรีย์
Provedor de dados: 106
Autores: Tiravut Larptrakul; Sudarut Tripetchkul; Saengchai Akepratumchai; Songpon Koonsrisuk.
Objective of the present study was to investigate influence of transplanting methods, namely, parachute” and wet seeded culture, on growth, i.e., height and tiller number/bunch, incidence of disease outbreak, soil quality and yield of “Hommali 105” rice cultivated organically. Results showed that the transplanting methods played insignificant role on growth as well as the incidence of disease outbreak (p0.05). However, the “parachute” transplanting method led to higher tiller numbers/bunch and rice yield than that obtained with the wet seeded method, 27 against 5 tillers/bunch (p&lt;0.05) and 1.7 folds, respectively. Further, during cultivation, soil qualities in terms of pH and content of organic matter, nitrogen and potassium appeared to be comparable...
Tipo: PhysicalObject
Palavras-chave: Rice; Wetland rice; Tillering; Yield; Parachute; Organic paddy rice farming; ข้าวนาหว่าน; การแตกกอ; ผลผลิตข้าว; นาโยนกล้า; วิธีการย้ายกล้า; ระบบการปลูกข้าวอินทรีย์.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5451

CCS08054-KLG-9-1-1-2-1 ข้าวไม่ไวต่อช่วงแสงอายุเก็บเกี่ยวไม่เกิน 100 วัน
Provedor de dados: 106
Autores: Prakobkit Dangthaisong; Kanya Cheaupan; Sunanta Wongpiyachon; Watcharee Sukviwat; Kanchana Klakhaeng; Suniyom Taprap.
CCS08054-KLG-9-1-1-2-1 is a short duration photoperiod insensitive rice, non-glutinous, and non-aromatic rice line derived from a cross between Chainat 1 and IR40. The single cross hybridization was made in 2008 at Bang Khen Rice Experiment Station (now Chachoengsao Rice Research. F2 to F5 progenies were selected at Klong Luang Rice Reseach Center during 2009-2011.The line CCS08054-KLG-9-1-1-2-1 has an erect and moderately strong culm; 115 cm height on transplanting; 99 days maturity on transplanting. The cooked rice is hardly non-aromatic and the amylose content is 24.56 percent. The seed size is larger than Pathum Thani 1 and Suphanburi 1. The period of seed dormancy is about 4 weeks. . Its yield potential is up to 759 kg/rai or more when grown under...
Tipo: Collection
Palavras-chave: Photoperiod insensitive rice variety; Short duration; Non-glutinous rice; Yield; Irrigated paddy field; Central plain; ข้าวไม่ไวต่อช่วงแสงอายุสั้น; ข้าวอายุสั้น; ข้าวเจ้า; ผลผลิต; นาชลประทาน; ภาคกลาง.
Ano: 2015
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5866

การใช้แผ่นเทียบสีใบข้าวจัดการปุ๋ยไนโตรเจนในข้าวสุพรรณบุรี 1 ปลูกแบบหว่านน้ำตม
Provedor de dados: 106
Autores: Surapol Chatuporn; Amornrat Intrman; Walaiporn Sanvong; Nittaya Ruensuk.
Two methods of nitrogen management of broadcast wet-seeded rice in SPR1 with Leaf Color Chart (LCC) had been demonstrated compared with farmer fertilizer's practice in 6 farmer fields in Suphan Buri province during dry and wet season, 2003. The results showed that LCC produced yield of 605 and 616 kg/rai whereas farmers’ practice produced only 594 kg/rai and also consumed 28-48% less N fertilizer and gained more yield per nitrogen unit than those of farmers’ practice. Moreover, LCC took only 3.80 baht/kg of total fertilizer input cost and gained 602-614 baht of net benefit whereas the farmers’ practice needed 4.20 baht/kg and gave only 363.50 baht net benefit. Thus, nitrogen management with LCC reduces a lot of input cost and imported urea fertilizer.
Tipo: Collection
Palavras-chave: Leaf color chart (LCC); Nitrogen management; SPR1; Broadcast wet-seeded rice; Cost production; Yield; ข้าว; การจัดการธาตุไนโตรเจน; พันธุ์สุพรรณบุรี 1; นาหว่านน้ำตม; ต้นทุนการผลิต; ผลผลิต; แผ่นเทียบสีใบข้าว; นาเกษตรกร; การใส่ปุ๋ย; ปุ๋ยไนโตรเจน.
Ano: 2008
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5098

การเจริญเติบโตและผลผลิตของสตรอเบอรี่ในสภาพพื้นที่ปลูกที่มีความสูงต่างๆ กัน
Provedor de dados: 106
Autores: Prapatsorn Riyaphan.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Strawberry; Fragaria ananassa; Tioga variety; Tochiotome variety; Cropping systems; Cultivars; Elevation; Daughter plant; Length runner; Growth; Yield; Chiangmai province; สตรอเบอรี่; พันธุ์ไทโอกา; พันธุ์โทชิโอโตเมะ; การปลูกพืช; สภาพพื้นที่ปลูก; ระดับความสูง; การเจริญเติบโต; ต้นไหล; ความยาวเส้นไหล; คุณภาพผลผลิต; จ.เชียงใหม่.
Ano: 2005
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5506

การตอบสนองต่อปุ๋ยไนโตรเจนของข้าวนาชลประทานสายพันธุ์ดีในเขตภาคตะวันตก
Provedor de dados: 106
Autores: Surin Tritilanant; Chayanunt Cham-Oun; Suthep Rhitsavang.
Response of nitrogen rates was investigated in Ratchaburi Rice Research Center during dry and wet season 2013 with 10 irrigated promissing rice lines/variety with different nitrogen rates of check 0 6 12 18 24 and 30 kg(N)/rai. The result showed rice yield in dry season 2013 at 6 18 24 and 30 kg(N)rai equal to 505.0 533.6 528.9 and 579.7 kg/rai with nonsignificant but in wet season 2013 there was different yield at 0 6 12 and 18 N-rates with 24 N-rate that gave highly yield of 622.4 kg/rai. In dry season 2013 PTT 00018-10-1-2-1 gave highly yield of 553 kg/rai but non different from RD31 check variety that gave yield of 519.29 kg/rai. The height of rice in dry season 2013 in every rates of N-fertilizer had non significant but PTT00018-10-1-2-1 had lowest...
Tipo: Collection
Palavras-chave: Irrigated rice; Nitrogen fertilizer; Response; Yield; Western region; ข้าวนาชลประทาน; ปุ๋ยไนโตรเจน; การตอบสนอง; ผลผลิต; ภาคตะวันตก.
Ano: 2015
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5924

ผลของการพอกเมล็ดพันธุ์ข้าวโพดไร่ขนาดเล็ก ด้วยฟอสฟอรัสและโพแทสเซียม ที่มีต่อคุณภาพเมล็ดพันธุ์ การเจริญเติบโตของต้นกล้า และผลผลิต
Provedor de dados: 106
Autores: Nongnuch Saenghin; Boonmee Siri.
The objectives of this research were to investigate effects of seed pelleting of small corn seed with phosphorus and potassium on seed quality and seedling growth. The experiment was conducted in Complete Randomized Design (CRD) at Seed Quality Test Laboratory of Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. The SPP033 hybrid corn was used for 4 replications and 6 treatments. T1) large-seed (unpelleting: size 20/64 in diameter screen) T2) small-seed (unpelleting: size 14/64 in diameter screen) T3) small seed pelleted with bentonite and charcoal and Hydroxylpropyl methylcellulose (HPMC) (P1) T4) small seed pelleted with P1 and phosphorus 0.070 mg. and potassium 0.644 mg./1 kg. of seed T5) small seed pelleted with P1 and phosphorus...
Tipo: PhysicalObject
Palavras-chave: Corn seed; Seed pelleting; Fertilization; Phosphorus; Potassium; Seed qaulity; Yield; Maize; Seedling growth; Seed size; Seed longevity; เมล็ดพันธุ์ข้าวโพด; การพอกเมล็ดพันธุ์; ธาตุอาหารพืช; ฟอสฟอรัส; โพแทสเซียม; การเก็บรักษาเมล็ดพันธุ์; เทคโนโลยีเมล็ดพันธุ์; คุณภาพเมล็ดพันธุุ์; ผลผลิต; อัตราการงอกของเมล็ด; ความแข็งแรงของเมล็ด; ต้นกล้า; การเจริญเติบโต.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5721

การจัดการธาตุอาหารเฉพาะพื้นที่เพื่อการผลิตข้าวอย่างยั่งยืน: จังหวัดพิษณุโลก
Provedor de dados: 106
Autores: Nivat Nabheerong; Anan Polvatana; Nalinee Chiengwattana; Sa-ang Chairinte; Phitsanu Hintang; Tasnee Attanandana.
Tipo: Collection
Palavras-chave: Rice; Nutrient management; NPK fertilizer; Production; Cost; Yield; Phitsanulok province; ข้าว; การจัดการธาตุอาหาร; ปุ๋ยไนโตรเจน; การผลิต; ต้นทุน; ผลผลิต; การตอบสนองต่อปุ๋ย; จ.พิษณุโลก; ปุ๋ยฟอสฟอรัส; ปุ๋ยโพแทสเซียม.
Ano: 2008
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5104

การศึกษาเปรียบเทียบความสามารถในการปรับตัวของลินินพันธุ์ต่าง ๆ ที่ระดับความสูงของพื้นที่ 3 ระดับ ในจังหวัดเชียงใหม่
Provedor de dados: 106
Autores: Parinya Vilairatana.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Linseed; Linum usitatissimum; Adaptability; Varieties; Growth; Harvesting time; Yield; Elevations; Royal Agricultural Station Angkhang; Royal Agricultural Station Pangda; Maejo Institute of Agricultural Technology; Chiang Mai province; ลินิน; พันธุ์; ความสามารถในการปรับตัว; การเจริญเติบโต; ระยะเก็บเกี่ยว; ผลผลิต; ระดับความสูง; สถานีเกษตรหลวงอ่างขาง; สถานีเกษตรหลวงปางดะ; สถาบันเทคโนโลยีการเกษตรแม่โจ้; จ.เชียงใหม่.
Ano: 1992
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5513

การเปรียบเทียบผลผลิตข้าวลูกผสม ข้าวปทุมธานี 1 และพิษณุโลก 2 ภายใต้การปลูกโดยวิธีการหว่านน้ำตมโดยใช้อัตราเมล็ดพันธุ์ 4 กก./ไร่
Provedor de dados: 106
Autores: Nittaya Ruensuk; Pranom Mongkonbunjong; Supaporn Janbuathong; Wassana Inthalaeng.
Tipo: Collection
Palavras-chave: Hybrid rice; Wet seeded rice; Yield; ข้าว; พันธุ์ลูกผสม; พันธุ์ปทุมธานี 1; พันธุ์พิษณุโลก 2; อัตราเมล็ดพันธุ์; การปลูกแบบหว่านน้ำตม; ผลผลิต.
Ano: 2007
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5084

การจัดเขตศักยภาพการผลิตข้าวจังหวัดเพชรบุรี
Provedor de dados: 106
Autores: Satit Tayapat; Saowaluck Arom; Tanadun Chuenmathunpaijit.
Rice production potential zoning of Petchaburi province had been conducted from 2010 to 2012. Research methodology composted of general rice production information collection, soil sampling and crop cutting from farmer field, and field experiment. The research found that there were 4 major rice varieties growing in the area Chainat1, Phitsanulok2, Suphanburi60 and Suphanburi1. The field experiments for comparing of fertilizer application were conducted 2 seasons at 12 locations. The results showed that L1 area, recommended fertilizer application (F1) gave the average yield of 1,067 kg/rai, while fertilizer application base on soil analysis (F2) gave the average yield of 1,222 kg/rai. Farmers’ practice of fertilizer application (F3) gave the average yield...
Tipo: PhysicalObject
Palavras-chave: Rice potential zoning; Petchaburi province; Yield; Rice production; Landform; Fertilizer; Cost; การจัดเขตศักยภาพการ; จังหวัดเพชรบุรี; ผลผลิตข้าว; การผลิตข้าว; ข้าว; ลักษณะดิน; การใส่ปุ๋ย; การจัดการปุ๋ย; การทดสอบพันธุ์; ต้นทุนการผลิต; การลดต้นทุน; การดูแลรักษา; ศักยภาพการผลิต.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5690

อิทธิพลของสารพาโคลบิวทราโซลที่มีต่อการเจริญเติบโต การเกิดดอกและผลผลิตของบ๊วย
Provedor de dados: 106
Autores: Jaturaporn Rakngan.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Prunus mume; Japanese apricot; Paclobutrazol; Flowering; Fruiting; Growth; Branching; Yield; บ๊วย; สารพาโคลบิวทราโซล; การเกิดดอก; การออกผล; การเจริญเติบโต; การแตกกิ่ง; ผลผลิตบ๊วย.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5486

ผลการจัดการปุ๋ยไนโตรเจนและน้ำต่อผลผลิตและปริมาณสารแอนโทไซยานินในข้าวก่ำเหนียวพันธุ์พื้นเมือง
Provedor de dados: 106
Autores: Wannapa Kamtuy; Benjavan Rerkasem; Sananee Jamjod; Nattinee Phatarakul; Chanakan Prom-u-thai.
Tipo: Collection
Palavras-chave: Yield; Anthocyanin; Purple rice; Glutinious rice; Local rice varie; Nitrogen fertilizers; Water mangement; ข้าวก่ำ; ข้าวเหนียว; ข้าวพื้นเมือง; แอนโทไซยานิน; ปุ๋ยไนโตรเจน; การจัดการน้ำ; ผลผลิต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5371

อิทธิพลของสารพาโคลบิวทราโซลที่มีต่อการเจริญเติบโต การออกดอก การติดผล ผลผลิต และคุณภาพของผลแอปเปิลพันธุ์ Anna และ Ein Shemer
Provedor de dados: 106
Autores: Phichit Sripinta.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Apple; Malus domestica; Anna; Ein Shemer; Paclobutrozol; Growth; Flowering; Fruit setting; Yield; Fruit quality; Royal Ang Khang Station; Chiang Mai province; แอปเปิล; พันธุ์; สารพาโคลบิวทราโซล; สารชะลอการเจิรญเติบโต; การเจริญเติบโต; การออกดอก; การติดผล; ผลผลิต; คุณภาพผล; สถานีเกษตรหลวงอ่างขาง; จ.เชียงใหม่.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5512

เปรียบเทียบระบบการปลูกข้าวแบบ 2 ครั้ง/ปี และ 3 ครั้ง/ปี ในเขตนาชลประทาน
Provedor de dados: 106
Autores: Nittaya Ruensuk; Sukanya Binamud.
Rice cropping system in irrigated area are rice-rice continuous cultivation. Farmers try to grow rice more than 2 crops/year. Nowadays there are no break even data. The aim of this research to compare economic data between 2 crops/year and 3 crops/year rice cropping system. Experiments were conducted in farmer’s field at Lumlukka district Pathum Thani province in 2011. There were 3 experiments : using the same variety, changed variety every season and changed variety every season with short duration rice variety in the rice cropping system. Each experiment consisted of 2 treatment: 2 crops/year and 3 crops/year rice cropping system. The result shown that 2 crops/year rice cropping system gave lower total yield and income than growing rice 3 crops/year...
Tipo: Collection
Palavras-chave: Rice; Irrigation area; Rice cropping system; Yield; Income; ข้าว; นาชลประทาน; ระบบการปลูกข้าว; นาเกษตรกร; ผลผลิต; รายได้; จ.ปทุมธานี อ.ลำลูกกา.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5324

ต้นทุนการผลิต ผลผลิต รายได้ และปัญหาการระบาดของข้าววัชพืช จากการปลูกข้าวในเขตนาชลประทาน จังหวัดอุตรดิตถ์
Provedor de dados: 106
Autores: Waraipoen Sanwong; Siraporn Chuea-uan; Nittaya Ruensuk.
Tipo: Collection
Palavras-chave: Cost of rice production; Yield; Income; Weedy rice; Broadcast wet seeded rice; Transplanting; Irrigated area; Uttaradit province; ข้าว; ผลผลิต; รายได้; ต้นทุนการผลิต; ข้าววัชพืช; การปักดำ; นาหว่านน้ำตม; เขตชลประทาน; จ.อุตรดิตถ์.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5264

การวิเคราะห์ความเสี่ยงในการปลูกข้าวนาน้ำฝนโดยใช้ระบบสารสนเทศภูมิศาสตร์และแบบจำลองการเจริญเติบโตของพืช
Provedor de dados: 106
Autores: Surajit Phuphak; Bas Bouman.
Risk due to rainfall variability is crucial in rainfed rice growing areas in the NE Thailand therefore analysis on risk coping of the farmers is importance. This research had evaluated the yield of KDML105 rice variety using a knowledge-based system approach, subject to rainfall uncertainty in 6 different kinds of paddies that related to soil and hydrological variability, with 4 scenarios of sowing times and 2 sowing methods in a watershed area of Ubon Ratchathani province. A GIS and a rice growth simulation model, ORYZA2000, tools were used with stochastic efficiency rule to analyze risk. The results showed that KDML105 yield was sensitive to rainfall variability, sowing times and sowing methods rather than variability of soil and hydrology which related...
Tipo: Collection
Palavras-chave: Risk analysis; Rainfed rice production; Crop growth simulation model; GIS; ORYZA2000; KDML 105; Yield; ข้าว; การปลูกข้าวนาน้ำฝน; แบบจำลองการเจริญเติบโต; จีไอเอส; ORYZA2000; พันธุ์ขาวดอกมะลิ 105; ผลผลิต; การวิเคราะห์ความเสี่ยง.
Ano: 2008
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5102

ผลของบราสสิโนสเตียรอยด์ต่อการสังเคราะห์ด้วยแสงและผลผลิตของข้าวพันธุ์ปทุมธานี 1 ภายใต้ภาวะเครียดจากความร้อน
Provedor de dados: 106
Autores: Kanapol Juthamanee; Jutiporn Thassakulpanit; Verasilp Sornsomboon; Lilly Kaweeta; Vitit Jaiaree; Apichart Sooksamrarn.
Brassinosteroids are the plant hormone reported to alleviate heat stress. This study investigated the response of rice (Oryza sativa L.cv. Pathum Thani 1) to 24-epibrassinolide (EBR) or 7,8-dihydro-8-20-hydroxyecdysone (DHECD) under high temperature by examine photosynthesis performance and yield. The results show that foliar application of 0.01 μM EBR and 0.1 μM DHECD on V7 vegetative growth could increase the photosynthetic efficiency under 40/30 ºC (day/night temperature). In field growth experiment, the application of those brassinosteroids concentrations on V7 growth stage could increase seed setting in all panicle part and number of normal seeds per particle. The results indicated that EBR and DHECD alleviated heat stress of rice ‘Pathum Thani 1’ by...
Tipo: Collection
Palavras-chave: Rice; Photosynthesis; Brassinosteroids; Yield; Heat stress; ข้าว; การสังเคราะห์แสง; ผลผลิต; บราสสิโนสเตียรอยด์; ความเครียดจากความร้อน; ฮอร์โมนพืช; การตอบสนองของพืช; การติดเมล็ด; พันธุ์ปทุมธานี 1.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5326

การเปรียบเทียบศักยภาพของผลผลิตเมล็ดพันธุ์และคุณภาพในการเก็บรักษาของถั่วเหลืองฝักสดกลิ่นหอม
Provedor de dados: 106
Autores: Laongdown Sangla; Pimnapa Khunpilueg; Kallaya Withee; Nopporn Tongplew.
Objective of this study was to compare four cultivars/lines of aromatic green soybean for fresh pod yield, seed yield, and storage quality. For yield assessment, the experiment was conducted under field conditions in the dry seasons and the late rainy seasons during November 2009 to February 2011 in a randomized completed block design with five replications.  For storability study, the experiment was undertaken in a laboratory using a split plot design in completly randomized design with three replications. In the dry season, two lines of aromatic green soybean (MJ0108-11-5 and MJ0101-4-6) had higher fresh pod yield (314 and 299 kg/Rai) and seed yield (281 and 294 kg/Rai) than did the standard check (Kaori). Germination percentage and seed vigor were not...
Tipo: Collection
Palavras-chave: Green soybean; Yield; Seed yield; Seed quality; Variety; ถั่วเหลืองฝักสด; ผลผลิต; ผลผลิตเมล็ด; คุณภาพเมล็ด; การเก็บรักษา; พันธุ์.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5188

การใช้ภูไมท์ ซีโอไลท์-สเมคไทต์ ซีโอไลท์คาซัคสถานและไคลน็อพติโลไลท์กับการปลูกข้าวขาวดอกมะลิ
Provedor de dados: 106
Autores: Jintana Hasawayukul; Sumpun Rattanasupa; Sataporn Kanchanapan; Phiboonwat Youngsook; Boonnak Plienpijit.
Tipo: Collection
Palavras-chave: KDML105; Pumice; Zeolite-Smectile; Zeolite-Kasacstan; Clinoptilolite; Rice; Rice cultivation; Yield; ข้าวขาวดอกมะลิ105; ภูไมท์; ซีโอไลท์-สเมคไทต์; ซีโอไลท์คาซัคสถาน; ไคลน็อพติโลไลท์; ปุ๋ยเคมี; ดินร่วนทราย; ดินเหนียว; ผลผลิต.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/123456789/3090

ปฏิกิริยาของพันธุ์ข้าวนาชลประทานภาคกลางต่อโรคใบสีส้ม
Provedor de dados: 106
Autores: Kasem Soontrajan; Wasana Panpeng; Satit Tayapat.
Tipo: Collection
Palavras-chave: Irrigated rice; Central region; Yellow orange leaf disease; Yield; Disease reaction; ข้าวนาชลประทาน; โรคใบสีส้ม; เพลี้ยจั๊กจั่นสีเขียว; แมลงพาหะ; การถ่ายทอดโรค; ปฏิกิริยาของพันธุ์ข้าว; ความต้านทานต่อโรค; ระดับความรุนแรงของโรค.
Ano: 2006
URL: http://anchan.lib.ku.ac.th/agnet/handle/123456789/3128

ผลของการเปลี่ยนแปลงสภาพภูมิอากาศต่อการเจริญเติบโตและผลผลิตของข้าว
Provedor de dados: 106
Autores: Piyapan Srikoom; Nittaya Reunsuk.
The effect of climate change on rice growth and yield had been studied during December, 2010 through March, 2012 at Chiang Rai Rice Research Center, Chiang Rai Province. Experimental design was split plot with three replications. Main plots were planting dates which designed to plant at monthly interval. Sub plots were rice varieties, consisting of Suphan Buri 1 (SPR1), and Suphan Buri 2 (SPR2). Planting method was pre-germinated seed broadcasting with seed rate of 15 kg/rai. The research found that planting in July was appropriate for both SPR1 and SPR2 variety in term of growth, growth duration and yield. Averaged plant heights were 136.4 and 122.3 cm with of SPR1 and SPR2 variety, respectively. The average yields were 827, and 678 kg/rai for SPR1 and...
Tipo: PhysicalObject
Palavras-chave: Global Warming; Climatic change; Growth; Yield; ภาวะโลกร้อน; การเปลี่ยนแปลงสภาพภูมิอากาศ; วันปลูก; ผลผลิต; การเจริญเติบโต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5591

Breeding and genetics for the improvement of yield and quality of corn
Provedor de dados: 106
Autores: Chamnan Chutkaew; Sansern Jampatong; Chokechai Aekatasanawan; Kittipong Tiantubtim.
16 tables
Palavras-chave: Maize; Corn; Breeding; Genetics; Yield increase; Yield; Quality; ข้าวโพด; การปรับปรุงพันธุ์; ผลผลิต; คุณภาพ.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4276

การจัดการจัดการศัตรูดาวเรืองแบบบูรณาการ
Provedor de dados: 106
Autores: Tasanee Jamjanya; Nutcharee Siri; Yuwarat Boonkaseam; Kanjana Khaeso.
The study of integrated pest management was performed in two farmers’ marigold field namely Ms. Liab and Ms Somchom at Muang district, Khon Kaen province. Randomized Complete Block Design (RCBD) was used with three treatments and four replications. T1- farmers’ practice, T2- control (no application of any insecticide and fungicide) and T3- integrated pest management (using trichoderma and released the predator, Sycanus sp.). In Ms. Liab’s plots, neem extract was applied to control insect pest. The result showed the least flower damage (1.81 percent); the highest number of flowers (44,596) and profit of 25,383.4 Baht/rai in T3 which significant difference with T1. The T1 obtained the least number of flowers (35,131.6) and profit of 16,288.5 Baht/rai....
Tipo: PhysicalObject
Palavras-chave: Marigold flower; Sycanus; Biological control; Trichoderma harzianum; Organic fertilizer; Integrated pest managemant; IPM; Survey; Yield; Profit; ดาวเรือง; ไม้ตัดดอก; มวนเพชฌฆาต; การควบคุมโดยชีววิธี; การควบคุมแมลงศัตรูพืช; การควบคุมโรคพืช; เชื้อราไตรโคเดอร์มา; ปุ๋ยหมักชีวภาพ; น้ำหมักชีวภาพ; ใบสะเดา; การจัดการศัตรูพืช; การจัดการแบบบูรณาการ; การสำรวจความเสียหาย; ผลผลิต; กำไร.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5779

การจัดเขตศักยภาพการผลิตข้าวจังหวัดประจวบคีรีขันธ์
Provedor de dados: 106
Autores: Satit Tayapat; Saowaluck Arom; Tanadun Chuenmathunpaijit.
Rice production potential zoning of Prachuap Khiri Khan province had been conducted from 2011 to 2013. Research methodology composted of general rice production information collection, soil sampling and crop cutting from farmer field, and field experiment. The research found that there were 4 major rice varieties growing in the area Chainat 1 , Suphanburi 1 , RD31 and Pathum Thani 1. The field experiments for comparing of fertilizer application were conducted 2 seasons at 12 locations. The results showed that L1 area, recommended fertilizer application (T1) gave the average yield of 885 kg/rai, while fertilizer application base on soil analysis (T2) gave the average yield of 785 kg/rai. Farmers’ practice of fertilizer application (T3) gave the average...
Tipo: PhysicalObject
Palavras-chave: Rice potential zoning; Prachuap Khiri Khan province; Yield; Rice production; Technology; Soil series; Chemical fertilizer; ข้าว; เขตศักยภาพการผลิตข้าว; ชุดดิน; ปุ๋ยเคมี; การใส่ปุ๋ย; ผลผลิต; ต้นทุนการผลิต; จ.ประจวบคีรีขันธ์.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5646

ปฏิกริยาสัมพันธ์ระหว่างพันธุกรรมและสภาพแวดล้อมของลักษณะผลผลิตเมล็ดในข้าวไร่พันธุ์พื้นเมืองสีดำของไทย
Provedor de dados: 106
Autores: Phosai Somchana; Wattana Pattanakul; Bhalang Surihan; Jirawat Sanitchon.
Interaction between genetic and environment effects were very important for the selection and production management programs of the black indigenous upland rice. The objectives of this study were to evaluate the effect of interaction between genetic and environment on grain yield and to investigate stability of these black upland rice varieties. Seven genotypes of Thai black indigenous upland rice were evaluated in 8 upland field environments (Jun-Oct) during 2010-2011 at 1) Khon Kaen University (2 yrs) 2) Ban Had district, Khon Kaen (2 yrs) 3) Phurua district, Loei 4) Dansai district, Loei and 5) Phangmapha district, Mae Hong Son (2 yrs) locate in the Northern and Northeastern of Thailand. Randomized complete block design with four replications were laid...
Tipo: Collection
Palavras-chave: ฺฺBrown rice; Purple rice; Pigment; Anthocyanin; Stability of varieties; Upland rice; Yield; Black Sticky Rice; ข้าวกล้อง; ข้าวก่ำ; ข้าวเหนียวดำ; รงควัตถุพืช; แอนโธไซยานิน; เสถียรภาพพันธุ์; ข้าวไร่; ปฏิกิริยาสัมพันธ์ระหว่างพันธุกรรมกับสภาพแวดล้อม; ผลผลิตเมล็ด.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5350

การศึกษาวิธีการผลิตต้นไหลสตรอเบอรี่พันธุ์ไทโอกา
Provedor de dados: 106
Autores: Nakorn Luangprasert.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Fragaria ananassa; Strawberry; Tioga; Daughter plant production; Runner production; Rooting; Flowering; Yield; สตรอเบอรี่; พันธุ์ไทโอกา; การผลิตต้นไหล; ส่วนขยายพันธุ์; การห่อราก; การสร้างรากใหม่; วันปลูก; การรอดตาย; การเจริญเติบโต; การออกดอก; ผลผลิต.
Ano: 1982
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5502

การปฏิบัติของชาวนาในการปลูกข้าวตามมาตรฐานการปฏิบัติทางการเกษตรที่ดี (GAP) ปี 2550/2551
Provedor de dados: 106
Autores: Kukiat Soitong.
This article concerned a summary report of social science research. The purpose of this research was to know the farmers' socio-economic situation, rice cultivation, rice cultivation practices, GAP standard practice in rice cultivation of the farmars and its factors related. The research was conduted by interviewing 3,575 farmers in 51 provinces during October 2007 to September 2008. It revealed the current situation of Thai farmers, rice cultivation practices, technologies used for rice production i.e. rice seed, soil fertility improvement, rice pest control and emphasizing on GAP standard practice by farmers. Many suggestion of the researchers were also given.
Tipo: Collection
Palavras-chave: Rice cultivation; Farmers; GAP; Rice seed; Soil fertility improvement; Rice pest control; Yield; Production technology; Good agricultural practices; การปลูกข้าว; ชาวนา; เกษตรดีที่เหมาะสม; การบำรุงดิน; การป้องกันกำจัดศัตรูข้าว; ผลผลิต; การผลิตข้าว; เมล็ดพันธุ์; เทคโนโลยีการผลิต; การปฏิบัติทางการเกษตรที่ดี; สภาพเศรษฐกิจและสังคม.
Ano: 2009
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5266

การศึกษาผลของสารละลายโปรตีนไหมต่อผลผลิตข้าวไร่ ณ ศูนย์ภูฟ้าพัฒนา จังหวัดน่าน
Provedor de dados: 106
Autores: Walailuk Phatwibul; Srisak Thani; Thiranan Taengthong; Mayuree Junsaytong; Phongphan Ek-arvoot; Rirtee Leuhong.
Silk protein solution was sprayed on upland paddy fields of 23 farmers at Phufa Pattana Centre in Nan province to study its potential to increase the yield of rice. Untreated areas were included in each field for comparison. Standard procedures for proper rice growing were applied in all study areas, namely, addition of bio-fertilizer during land preparation and during the cultivation, weed control, etc. Number of tillers, number of plants per tiller, plant height, panicles’ length, number of branches per panicle, number of seeds per tiller, weight of 100 good seeds and grains’ weight per sq.m. were collected. Grain yields per rai were calculated and analyzed statistically between untreated areas and areas treated with silk protein solution. Data were...
Tipo: PhysicalObject
Palavras-chave: Upland rice; Silk protien solution; Yield; Phufa Pattana Center; ข้าวไร่; สารละลายโปรตีนไหม; ผลผลิต; ศูนย์พัฒนาภูฟ้า; จ.น่าน.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5430

ผลของไคโตซานฉายรังสีต่อการเจริญเติบโต การให้ผลผลิต และการต้านทานโรคในข้าว
Provedor de dados: 106
Autores: Phiriyatorn Suwanmala; Kasinee Hemvichian; Nittaya Ruensuk; Kasem Suntrajarn; Manit Zonsook; Kanokporn Boonsirichai.
Tipo: PhysicalObject
Palavras-chave: Radiation chitosan; Rice growth; Yield; Disease resistance; ข้าว; ไคโตซาน; การฉายรังสี; ปุ๋ยเคมี; การเจริญเติบโต; การต้านทานโรค; ผลผลิต; องค์ประกอบผลผลิต.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5224

Vegetable corn breeding for yield and quality
Provedor de dados: 106
Autores: Prawit Puddhanon; Sakol Petchmanee; Penkae Nattribhop; Sumitra Pinthongkum; Suvit Punsurintr; Vichit Kajornmalee.
8 tables
Palavras-chave: Corn; Maize; Vegetable corn; Breeding; Yield; Quality; Baby corn; Sweet corn; Open pollinated variety; Hybrids; ข้าวโพด; ข้าวโพดฝักสด; การปรับปรุงพันธุ์; ผลผลิต; คุณภาพ.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4280

ผลของการให้น้ำที่มีต่อการเจริญเติบโตและผลผลิตของต้นสตรอเบอรี่
Provedor de dados: 106
Autores: Chusak Sajjapongse.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Fragaria ananassa; Strawberries; Irrigation; Growth; Yield; สตรอเบอรี่; การให้น้ำ; การเจริญเติบโต; ผลผลิต; คุณภาพ.
Ano: 1985
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5500

อิทธิพลของช่วงเวลาปลูกต่อผลผลิตและคุณภาพข้าวนาชลประทานสายพันธุ์ดีเด่น
Provedor de dados: 106
Autores: Wannakorn Intarasatit; Sa-ang Chairin; Suradet Palawisut.
Climate change has an impact on rice yield and quality. Heat highly affects rice during flowering stage, as during the stage rice is extremely sensitive to temperature environment. It has been reported that, different rice variety was affected by temperature differently. For Asian country, the highest temperature during the day in summer was about 35 to 41oC or higher resulting in heat intolerance in rice that causes the high percentage of unfilled grain. Heat is also the major cause of cracked-grain leading to the higher number of broken milled rice after milling. The temperature which is higher than 35oC can cause a severe problem in rice plant development in either vegetative phase or reproductive phase that can be determined by the lower number of...
Tipo: Collection
Palavras-chave: Effect of planting date; Yield; Physical quality; Milling quality; Promissing line; อิทธิพลของช่วงเวลาปลูก; ผลผลิต; คุณภาพข้าวทางกายภาพ; คุณภาพการสี; สายพันธุ์ดีเด่น.
Ano: 2015
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5934

ผลการเปลี่ยนแปลงสภาพแวดล้อมต่อการเจริญเติบโตและให้ผลผลิตข้าว
Provedor de dados: 106
Autores: Khemporn Petcharaporn; Nittaya Ruensuk.
Investigation was made of growth and yield rice in response to different environments of irrigated rice varieties in paddy field at Klong Luang Rice Research Center during 2012 to 2013.  The objective of this research was to correlate the effect of climate change on growth and rice yield.  Five non-photoperiod sensitive rice varieties (Suphanburi 1, Suphanburi 2,  Pathumtani 1, RD 29 and RD 43)  were varied planting date. The results showed that 1) Increasing of the mean temperature, rain, humidity, wind speedy and the cumulative of sunshine per day will tend increasing height and number tiller of rice  during  sowing date to tillering stage.  2) Low temperature and lese of the cumulative amount of sunshine per day effect to the ripening stage was shorter...
Tipo: PhysicalObject
Palavras-chave: Rice; Climate change; Growth; Yield; Global warming; ข้าว; สภาพภูมิอากาศ; การเจริญเติบโต; ผลผลิต; พันธุ์.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5623

การใช้ปอเทืองเป็นปุ๋ยพืชสดที่มีต่อผลผลิต องค์ประกอบผลผลิต และปริมาณไนโตรเจนของข้าวสังข์หยดพัทลุง
Provedor de dados: 106
Autores: Somporn Kamyot.
The research objectives were to investigate green manure species namely Crotalaria juncia on yield, yield components and nitrogen content of rice cv. Sangyodphatthalung was conducted in paddy soil condition of Phatthalung Soil Series. The experimental design was RCBD of which consisted of 7 treatments by using different seed rates (kg rai-1) as compared to chemical fertilizer i.e. 0, 5, 10, 15, 20, 25 and 8-10-0 kg N-P2O5-K2O rai-1. The results of yield showed that significantly different with different seed rates, the treatment of 15, 20, 25 kg rai-1 and CF gave similar highest average yield (386.8, 388.9, 385.7, 409.5 kg rai-1 respectively) and highest average number of no. of panicle hill-1, no. of spikelet panicle-1 and % of filled grain whereas the N...
Tipo: Collection
Palavras-chave: Rice; Sangyodphatthalung rice; Green manure; Yield; Yield component; Nitrogen content; ข้าว; พันธุ์สังข์หยดพัทลุง; ปอเทือง; ปุ๋ยพืชสด; ผลผลิต; องค์ประกอบผลผลิต; ปริมาณไนโตรเจน.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5373

การจัดการฟางข้าวในพื้นที่ทำนาอย่างต่อเนื่อง
Provedor de dados: 106
Autores: Nittaya Ruensuk; Pranom Mongkonbunjong; Chalermchat Leuchikam; Wassana Inthalaeng.
Straw management by incorporation into the soils is an alternative method to avoid straw burning before land preparation.The experiment was conducted at Pathum Thani Rice Research Center and Suphan Buri Rice Research Center during 2006-2007. It was comprised of 3 trials, i.e., effect of amount of straw incorporated into soils to rice growth and yield, effect of straw management methods to rice growth and yield, and effect of straw incorporation period to rice growth and yield. The results showed that straw incorporation rate of 0-800 kg/rai did not affect early growth stage (number of plants/m2 at 15 days after planting) and yield. Number of plants/m2 at 15 days after planting was decreased by straw incorporation at the rate of 1,200-1,600 kg/rai whereas...
Tipo: Collection
Palavras-chave: Rice; Straw management; Straw incorporation period; Growth; Yield; ข้าว; การจัดการฟางข้าว; การไถกลบ; ระยะเวลาการหมัก; การเจริญเติบโต; ผลผลิต.
Ano: 2008
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5100

ผลของการใช้วัสดุอินทรีย์ต่อการตอบสนองของข้าวในดินเค็ม
Provedor de dados: 106
Autores: Konkanok Paopo; Porntip Srimongkol; Suphasit Sitthaphanit; Wimolnan Kanket.
Rice growth and yield are adversely affected by soil salinity. The application of organic matter is a successful technique for saline soil remediation. The experiment was conducted to determine the effect of different organic materials on the response of rice in saline soil. Experimental design was a randomized complete block with 4 replicates comprised 4 treatments: 1) no organic material application (control) 2) sesbania application at the rate of 1,000 kg/rai 3) rice straw application at the rate of 1,000 kg/rai and 4) sesbania at the rate of 500 kg/rai and rice straw at the rate of 500 kg/rai. The result were shown that sesbania and rice straw treatment had the highest rice dry weight in all growth stages, the highest nutrient uptake at booting stage,...
Tipo: PhysicalObject
Palavras-chave: Rice; Sesbania; Rice straw; Organic material; Saline soil; Soil management; Soil amendments; Organic material application; Photosynthesis; Yield; Plant response; Rice production; ข้าว; โสนอัฟริกัน; ฟางข้าว; วัสดุอินทรีย์; ดินเค็ม; การจัดการดิน; การปรับปรุงดิน; การตอบสนองของพืช; การสังเคราะห์แสง; อัตราผลผลิต; การผลิตข้าว.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5754

การปรับปรุงพันธุ์ข้าวให้ทนดินเค็มและมีคุณภาพการหุงต้มดี
Provedor de dados: 106
Autores: Duangjai Suriyaarunroj; Apichart Vanavichit; Somvong Tragoonrung; Theerayut Toojinda.
Breeding for salt tolerant rice has been done for a decade. However, most of salt tolerant lines which have been released carry inferior cooking qualities compared to KDML105, an aroma good cooking quality rice of Thailand. To develop salt tolerant and good cooking quality rice, molecular marker assisted selection in backcross breeding program was initiated in 2001. Two RILs, FL496 and FL530 selected from mapping population of IR29 x Pokkali were used as salt tolerant donors. KDML105 as recipient was cross pollinated with these 2 donors to develop F1 and cross back to KDML105 to develop BC1F1. Three markers ; RM140, B1.1-1 and B1.1-11 flanking salt tolerant QTLs spanning 33 cM and two markers; RM00 and 10L03FW for amylose content and aroma scent were used...
Tipo: Collection
Palavras-chave: Salt tolerant rice; Molecular markers; Cooking quality; Yield; ข้าวทนเค็ม; โมเลกุลเครื่องหมาย; คุณภาพการหุงต้ม; ผลผลิต; การปรับปรุงพันธุ์.
Ano: 2007
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5301

Sequential plantations of ríce, edamame soybeans, and peanuts as a product of alternative and mineral fertilization in the Roraima Cerrado in Brazil
Provedor de dados: 109
Autores: Smiderle,Oscar José; Souza,Aline das Graças; Franco de Oliveira,Jane María; Dias,Thiago Jardelino.
Abstract The objective of this study was to determine the production of sequential rice, soybean, and peanut plantations as a function of mineral and alternative fertilization. To meet the objectives of the work, three independent experiments were carried out in the Experimental Field of Embrapa in Brazil. The first experiment was with rice BRS Sertaneja, conducted in the period from May to September in two agricultural years (2009 and 2010), with the purpose of evaluating the yield, germination, and vigour of BRS Sertaneja rice seeds as a function of mineral and alternative fertilization. The second experiment was performed with soybeans BRS 258 and the strain BR9452273, which were evaluated in the period from October to January in two years (2009/2010...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis hipogaea; Glycine max; Oryza sativa; Yield; Grains.
Ano: 2022
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122022000200162

Combining ability analysis for yield and yield components in bold grained rice (Oryza sativa L.) of Assam
Provedor de dados: 109
Autores: Chakraborty,R; Chakraborty,Supriyo; Dutta,B.K.; Paul,S.B.
Combining ability analysis for grain yield and its components was carried out in eight parental diallel crosses of bold grained rice excluding reciprocals. The general combining ability (GCA) and specific combining ability (SCA) effects were significant for all the characters indicating the importance of both additive and non-additive gene effects in their inheritance. The parents Ranjit followed by Matonga and Monohar Sali contributed significantly to high GCA effect towards high grain yield per hill. The superior specific cross combinations for high grain yield per hill were Matonga/Bar Madhava, originated from high x low GCA combination followed by Dhola Mula/ Ranjit (low x high gca), Chandmoni/Hathi Sali (low x high GCA), Dhola Mula/Mala (low x low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: General combining ability; Bold grained rice; Yield component; Yield.
Ano: 2009
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122009000100002

Establishment of drought screening protocols for rice under field conditions
Provedor de dados: 109
Autores: Sakai,Tomoko; Duque,Myriam Cristina; Vallejo Cabrera,Franco Alirio; Martínez,César Pompilio; Ishitani,Manabu.
Protocols were established for screening rice genotypes for tolerance to water-limited conditions under field conditions. These protocols were successfully used to select the best genotypes for further experiments. Rice genotypes responded differently when subjected to water-limited conditions. Experiments conducted under field conditions indicated that rice genotypes Curinga and CT6241 performed much better in terms of grain yield under water-limited conditions than varieties Azucena, Nerica, CICA8 and Palmar. Curinga, CT6241, CICA8 and Palmar were selected for further studies. The first two genotypes are tolerant and whereas the last two are susceptible to water stress.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice; Oryza; Drought; Yield; Yield components.
Ano: 2010
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122010000300009

Effect of two environments and fertilization recommendations on the development and production of bell pepper (cv. Nathalie)
Provedor de dados: 109
Autores: Lozano-Fernández,Jaime; Orozco-Orozco,Luz Fanny; Montoya-Munera,Luis Felipe.
Abstract Some unappropriated techniques are found in bell pepper agricultural management. Those are: non-balancing nutritional profile among soil contribution, crop requirements and fertilizer efficiency, excessive use of composite sources and the lack of availability of studies on recommendations in different environments where this crop is grown. In order to mitigate the inadequate techniques in the agronomic management of bell pepper, an evaluation of four fertilization treatments under open field and protected conditions with plastic cover was conducted. Nathalie cultivar was grown during 2014-B and 2015-A at "Corporación Colombiana de Investigación Agropecuaria", -CORPOICA research center, located in Llanogrande, township of Rionegro (Antioquia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic management; Capsicum annuum; Crop relative growth rate; Open field condition; Protected with plastic cover; Yield.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100101

Performance of bean ( Phaseolus vulgaris L.) genotypes in the second-season under high and low technology management in Parana, Brazil
Provedor de dados: 109
Autores: Brusamarello,Antonio Pedro; Oliveira,Paulo Henrique; Sebim,Danilo Eduardo; Baretta,Douglas Rodrigo.
Abstract In the face of bean (Phaseolus vulgaris L.) crops with low grain yield in Brazil, specifically in the state of Parana-Brazil, this research aimed to evaluate the agronomical performance of different genotypes grown in the second-season under high and low technology management. The experimental design was a randomized block design with three replications in a 3x13x2 triple factorial arrangement, where Factor A was composed of three years of cultivation (second-season 12/13, 13/14 and 14/15), Factor B consisted of 13 bean cultivars (BRS Campeiro; BRS Esplendor; IPR Gralha; IPR Tuiuiú; IPR Uirapuru; BRS Ametista; BRS Estilo; BRS Notável; BRS Pérola; IPR 81; IPR Campos Gerais; IPR Curió and IPR Tangará) and Factor C consisted of 2 levels of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cultivars; Environment; Genetics; Technology; Yield.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300436

NUTRIENT MANAGEMENT PRACTICES FOR ENHANCING SOYBEAN (Glycine max L.) PRODUCTION
Provedor de dados: 37
Autores: HELLAL,FARID A.; ABDELHAMID,MAGDI T.
Soybean (Glycine max L.), is the most important pulse crop in the world. Soybean is a very energy-rich grain legume containing 40 percent protein and 19 percent oil in the seeds. The magnitude of soybean yield losses due to nutrient deficiency also varies among the nutrients. Deficiencies of N, P, Fe, B and S nutrients may cause yield losses up to 10 %, 29-45 %, 22-90 %, 100 % and 16-30 %, respectively, in soybean depending on soil fertility, climate and plant factors. Soil salinity is one of the major limiting factors of soybean production in semiarid regions, and chloride salinity has a more depressive effect on yield than sulphate salinity. The goal of nutrient management is to maximize soybean productivity while minimizing environmental consequences....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bean; Fertiliser; Plant nutrition; Yield.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200001

Desempenho do gergelim em função da adubação NPK e do nível de fertilidade do solo - DOI: 10.4025/actasciagron.v32i1.2521
Provedor de dados: 1
Autores: Perin, Adriano; CEFET-Rio Verde; Cruvinel, Danilo José; CEFET-Rio Verde; Silva, José Waldemar da; CEFET-Rio Verde.
O objetivo do trabalho foi avaliar o desempenho do gergelim, em condições de safrinha, em doses crescentes de NPK e diferentes níveis de fertilidade do solo. Foram instalados dois experimentos: um em casa-de-vegetação e outro a campo. Em casa-de-vegetação, utilizou-se fatorial 6 x 2, distribuído em delineamento inteiramente ao acaso, com quatro repetições. O primeiro fator constou de seis doses do adubo 04:14:08; o segundo, de dois tipos de solo (baixa e alta fertilidade). O experimento a campo constou de seis tratamentos (0, 75, 150, 300, 450 e 600 kg há-1 do adubo 04-20-10), distribuídos em blocos ao acaso, com quatro repetições. A adubação com 04:14:08, quando em solo de baixa fertilidade, promoveu aumento na altura das plantas, desde o início até o...
Tipo: Pesquisa de campo
Palavras-chave: 5.01.00.00-9    Agronomia Sesamum indicum; Cultivo na safrinha; Adubação química; Produtividade 5.01.03.01-6 Sesamum indicum L.; Dries crop; Chemical fertilization; Yield.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2521

Agrosilício na produção de clones de mandioquinha-salsa - DOI: 10.4025/actasciagron.v31i3.699
Provedor de dados: 1
Autores: Sediyama, Maria Aparecida Nogueira; EPAMIG/UFV; Santos, Marlei Rosa; EPAMIG/UFV; Albanez, Ana Cláudia Miranda Pinheiro; EMATER; Ribeiro, José Márcio Oliveira; EMATER; Granate, Maria José; EPAMIG/UFV; Vidigal, Sanzio Mollica; EPAMIG/UFV.
Para avaliar a produção de clones de mandioquinha-salsa em função da aplicação de agrosilício, realizou-se um experimento no município de Viçosa, Estado de Minas Gerais, no período de maio/2004 a março/2005. Utilizou-se o delineamento de blocos casualizados no esquema fatorial 9 x 2, em faixas, sendo nove clones: Araponga, BGH-4550, BGH-5742, BGH-5744, BGH-5747, BGH-6417, BGH-6425, BGH-6525 e Senador Amaral, cultivados na ausência e presença de agrosilício (2.500 kg ha-1), com três repetições. A colheita foi realizada aos 304 dias após o plantio, quando se avaliou a altura e diâmetro das plantas e massa fresca da parte aérea, número de raízes por planta, produção de raízes comerciais, não-comerciais (refugo), podres e coroa em kg ha-1. Não houve efeito da...
Palavras-chave: 5.01.00.00-9    Agronomia Arracacia xanthorrhiza; Genótipos; Resíduo siderúrgico; Produtividade Arracacia xanthorrhiza; Genotypes; Siderurgical waste; Yield.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/699

Genetic gain prediction of the third recurrent selection cycle in a popcorn population - DOI: 10.4025/actasciagron.v30i5.3174
Provedor de dados: 1
Autores: Santos, Fabrício Santana; UENF; Amaral Júnior, Antonio Teixeira do; UENF; Freitas Júnior, Silvério de Paiva; UENF; Rangel, Ramon Macedo; UENF; Scapim, Carlos Alberto; UEM; Mora, Freddy; UEM.
Although Brazil has reduced its importation of popcorn grain in recent years, the availability of improved varieties is still rare. In order to improve a popcorn population and to estimate the prediction of genetic gains, the third cycle of intrapopulation recurrent selection was carried out. One hundred ninety two half-sib families were obtained from the second cycle of the UNB-2U population and tested in a randomized complete block design with two replications within sets in two locations. The presence of statistical significance for sets for grain yield, poorly husked ear and broken plants proved the efficiency and the necessity for the use of the hierarchical statistical model by sets. Except for the poorly husked ear, there was significance for...
Tipo: Método
Palavras-chave: 5.02.01.03-4 Genética e Melhoramento Florestal Zea mays; Produção de grãos; Melhoramento; Capacidade de expansão Melhoramento Vegetal Zea mays; Popcorn breeding; Genetic gains; Yield; Popping expansion.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3174

Produtividade de feijão-guará e efeito supressivo de culturas de cobertura de inverno em espontâneas de verão - DOI: 10.4025/actasciagron.v31i4.988
Provedor de dados: 1
Autores: Bittencourt, Henrique Von Hertwig; IAPAR; Lovato, Paulo Emílio; UFSC; Comin, Jucinei José; UFSC; Lana, Marcos Alberto; UFSC; Altieri, Miguel Angel; Universidade da California em Berkeley.
Investigou-se o efeito das coberturas de inverno centeio, aveia, azevém, ervilhaca e nabo forrageiro (e suas associações), em sistema de plantio direto, sobre a cobertura do solo e a produção de biomassa das coberturas de inverno, sobre a biomassa de plantas espontâneas de verão, no período crítico de competição, e sobre a produtividade do feijão, cv Guará. O experimento foi instalado em delineamento experimental constituído por blocos ao acaso com quatro repetições. Observaram-se as maiores percentagens de cobertura do solo no inverno, com os tratamentos centeio + ervilhaca, centeio + ervilhaca + nabo forrageiro e aveia + ervilhaca; a produção de biomassa de cobertura foi maior com centeio + ervilhaca + nabo forrageiro. O efeito de supressão observado foi...
Palavras-chave: 5.01.03.04-0    Produção de Mudas plantio direto; Plantas espontâneas; Rendimento; Conservação do solo. Fitotecnia no-tillage; Spontaneous plants; Yield; Soil conservation.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/988

The performance of the CROPGRO model for bean (Phaseolus vulgaris L.) yield simulation - doi: 10.4025/actasciagron.v34i3.13424
Provedor de dados: 1
Autores: Oliveira, Evandro Chaves de; Instituto Federal do Espírito Santo; Costa, José Maria Nogueira da; Universidade Federal de Viçosa; Paula Júnior, Trazilbo José de; Empresa de Pesquisa Agropecuária de Minas Gerais; Ferreira, Williams Pinto Marques; Empresa Brasileira de Pesquisa Agropecuária; Justino, Flávio Barbosa; Universidade Federal de Viçosa; Neves, Leonardo de Oliveira; Instituto Federal Catarinense.
The aim of this study was to evaluate the CROPGRO-Dry bean model for simulating dry bean yield. The model’s genetic coefficients were calibrated based on the cultivars ‘Pérola’, ‘Ouro Negro’ and ‘Ouro Vermelho’ in Viçosa, State of Minas Gerais, Brazil. The coefficients were adjusted based on two experiments that were performed in 2003 with irrigated and nonirrigated water regimes. An additional experiment with irrigation was conducted in 2004. After calibration, the model simulated the bean yield for the period from 1975 through 2006. The simulations were based on daily data on maximum and minimum air temperatures, total precipitation and global solar radiation. The physical and hydric characteristics of the soil and crop management practices were also...
Tipo: Pesquisa de Empírica de campo
Palavras-chave: Meteorologia agrícola computer simulation; DSSAT; Cultivars; Phaseolus vulgaris; Yield; Forecast date Modelagem agrometeorológica.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13424

Fontes e doses de zinco no feijoeiro cultivado em diferentes épocas de semeadura - DOI: 10.4025/actasciagron.v30i2.1739
Provedor de dados: 1
Autores: Teixeira, Itamar Rosa; UEG; Borém, Aluizio; UFV; Silva, Alessandro Guerra da; Universidade de Rio Verde; Kikuti, Hamilton; UEMS.
Este trabalho teve por objetivo avaliar, em diferentes épocas de cultivo a produção do feijoeiro, submetido à aplicação foliar de fontes e doses de zinco. Foi utilizado o delineamento de blocos casualizados, em esquema fatorial 3 x 2 x 5, com quatro repetições. Os tratamentos envolveram a combinação de três safras de cultivo (inverno, águas e seca), duas fontes de zinco (sulfato e cloreto de zinco) e cinco doses de zinco (0, 100, 200, 400 e 800 g ha-1), aplicadas via foliar, aos 25 e 35 dias após emergência da cultura. Na safra de inverno, foram obtidos os maiores rendimentos de grãos e de seus componentes (número de vagens por planta e número de grãos por vagem) e teor foliar de zinco, comparativamente, às safras das águas e seca. Não houve efeito da...
Palavras-chave: 5.01.03.05-9    Melhoramento Vegetal Phaseolus vulgaris; Rendimento; Adubação; Micronutriente 5.01.03.05-9    Melhoramento Vegetal Phaseolus vulgaris; Yield; Fertilization; Micronutrient.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1739

Genetic parameters and agronomic characterization of elite barley accessions under irrigation in the Cerrado
Provedor de dados: 1
Autores: Sayd, Ricardo Meneses; Amabile, Renato Fernando; Faleiro, Fábio Gelape; Coelho, Mateus Costa; Montalvão, Ana Paula Leite.
There is a demand for barley cultivars that are suitable for the malt industry as well as genotypes that are stable and better adapted for irrigation in the Cerrado. This study aimed to estimate the genetic parameters by assessing 69 barley genotypes from different countries, from 2012 to 2014, under irrigation in the Cerrado. Six agronomic characteristics were assessed: grain yield, plumpness kernel, thousand seeds weight, plant height, degree of plant lodging and days to heading. Analysis of variance, cluster test and phenotypic, genotypic and environmental correlations were performed. Significant effects were observed for genotypes, years and the G x E interaction. High values of broad-sense heritability (&gt; 86%) were found for all the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hordeum vulgare L.; Yield; G x E interaction; Genetic resources.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42630

Desenvolvimento e produtividade do algodoeiro em função de espaçamentos e aplicação de regulador de crescimento - DOI: 10.4025/actasciagron.v30i3.3546
Provedor de dados: 1
Autores: Ferrari, Samuel; UNESP; Furlani Junior, Enes; UNESP; Ferrari, João Vitor; UNESP; Santos, Marcio Lustosa; UNESP; Santos, Danilo Marcelo Aires dos; UNESP.
Atualmente, o cultivo do algodoeiro está alicerçado em um modelo de produção em escala, caracterizado por altas produtividades e intenso uso de insumos e mecanização. Objetivou-se, com este trabalho, avaliar a influência de diferentes espaçamentos de cultivo, submetidos ou não à aplicação de regulador de crescimento, no desenvolvimento e na produtividade do algodoeiro. O delineamento experimental foi de blocos casualizados, em esquema fatorial 3x3, com nove tratamentos e quatro repetições, constituído por três espaçamentos: 0,45, 0,70 e 0,90 m entre linhas; regulador de crescimento: a) aplicação parcelada em quatro etapas; b) aplicação única aos 70 d.a.e.; e c) sem a aplicação do regulador. O projeto foi instalado no município de Selvíria (MS), em novembro...
Palavras-chave: 5.01.00.00-9 Agronomia densidade de plantas; Cloreto de Mepiquat; Características agronômicas e produção 5.01.03.00-8 Fitotecnia plant density; Mepiquat chloride; Agronomic characteristics; Yield.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3546

Recycling of the biomass waste defatted almond meal as a novel nutritional supplementation for cultivated edible mushrooms
Provedor de dados: 1
Autores: Pardo-Giménez, Arturo; Carrasco, Jaime; Roncero, José María María; Álvarez-Ortí, Manuel; Cunha Zied, Diego; Pardo-González, Jose Emilio.
Defatted almond meal (DAM) is an useless biomass waste obtained after oil extraction. The substrate designed for mushroom cultivation is achieved through a controlled composting process from agricultural by-products (chicken manure and wheat straw). This work shows the potential of DAM as efficient compost supplement for culturing the species Agaricus bisporus (J.E. Lange) Imbach and Pleurotus ostreatus (Jacq.) P. Kumm. Supplementation during A. bisporus cultivation results in larger mushrooms with a firmer texture and higher dry matter and protein contents in comparing with the non-supplemented substrate. In P. ostreatus, supplementation at a dosage of 15 g kg-1 provided a yield improvement up to 31.8%, compared to the control without supplement. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Defatted almond meal; Yield; Quality; Agaricus bisporus; Pleurotus ostreatus; Recycled waste.; Crop production.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39341

Genetic parameters and agronomic characterization of elite barley accessions under irrigation in the Cerrado
Provedor de dados: 1
Autores: Sayd, Ricardo Meneses; Amabile, Renato Fernando; Faleiro, Fábio Gelape; Coelho, Mateus Costa; Montalvão, Ana Paula Leite.
There is a demand for barley cultivars that are suitable for the malt industry as well as genotypes that are stable and better adapted for irrigation in the Cerrado. This study aimed to estimate the genetic parameters by assessing 69 barley genotypes from different countries, from 2012 to 2014, under irrigation in the Cerrado. Six agronomic characteristics were assessed: grain yield, plumpness kernel, thousand seeds weight, plant height, degree of plant lodging and days to heading. Analysis of variance, cluster test and phenotypic, genotypic and environmental correlations were performed. Significant effects were observed for genotypes, years and the G x E interaction. High values of broad-sense heritability (&amp;gt; 86%) were found for all the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hordeum vulgare L.; Yield; G x E interaction; Genetic resources.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42630

Desempenho agronômico da soja sob diferentes rotações e sucessões de culturas em sistema plantio direto - DOI: 10.4025/actasciagron.v31i1.6631
Provedor de dados: 1
Autores: Mancin, Cinthia Raquel; UFGD; Souza, Luiz Carlos Ferreira de; UFGD; Novelino, José Oscar; UFGD; Marchetti, Marlene Estevão; UFGD; Gonçalves, Manoel Carlos; UFGD.
Este trabalho faz parte de um projeto de longa duração que teve início em 1997 e envolve produção de grãos baseada em sistemas de rotação ou sucessão de culturas. O experimento foi desenvolvido no ano agrícola 2005/06, em LATOSSOLO VERMELHO Distroférrico, na Fazenda Experimental de Ciências Agrárias da Universidade Federal da Grande Dourados - UFGD, em Dourados, Estado de Mato Grosso do Sul. O delineamento experimental foi em blocos casualizados com sete tratamentos e três repetições. Em cada parcela, foram semeadas mecanicamente 26 linhas de soja com 36 m de comprimento, espaçadas entre si por 0,45 m. Os tratamentos consistiram de sete sistemas de rotação ou sucessão, envolvendo espécies semeadas solteiras ou com misturas de espécies antecessoras a soja,...
Palavras-chave: 5.01.03.04-0 Produção de Mudas sistemas de produção; Produtividade; Plantas de cobertura. production system; Yield; Covering plants.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6631

Sustainable production of ‘Comum’ tannia in the hilling and function of seedling types in three crop seasons - doi: 10.4025/actasciagron.v35i2.16152
Provedor de dados: 1
Autores: Heredia Zárate, Néstor Antonio; Universidade Federal da Grande Dourados; Vieira, Maria do Carmo; Universidade Federal da Grande Dourados; Faccin, Fabiane Cargnin; Universidade Federal da Grande Dourados; Heredia Vieira, Danilo Augusto; Universidade Estadual de Maringa; Gassi, Rosimeire Pereira; Universidade Federal da Grande Dourados; Santos, Anna Luiza Farias dos; Universidade Federal da Grande Dourados.
This study aims to discover the agro-economic yield of the ‘Comum’ tannia, which was propagated with five seedling types (Extra, Large, Medium, Small and Tiny) and grown both with and without a hilling operation during three crop seasons. In each agricultural year, the treatments were arranged as a 5 x 2 factorial in a randomized complete block design with four replications. The harvests were conducted 238 (2007-08), 231 (2008-09) and 237 (2009-10) days after planting. The data were submitted to an analysis of variance each year. The plants produced from large seedlings and RM-corms had a higher fresh leaf weight. Additionally, the dry weight of the RFC-commercial cormels and RFNC-non-commercial cormels was higher with extra seedlings. The plants grown...
Tipo: Pesquisa de campo
Palavras-chave: Agronomia; Fitotecnia; Tratos culturais Xanthosoma mafaffa; Propagation materials; Cultural treatments; Yield; Income Tratos culturais.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16152

Desempenho de mecanismos dosadores de sementes em diferentes velocidades e condições de cobertura do solo - DOI: 10.4025/actasciagron.v30i5.5960
Provedor de dados: 1
Autores: Pinheiro Neto, Raimundo; UEM; Braccini, Alessandro de Lucca e; UEM; Scapim, Carlos Alberto; UEM; Bortolotto, Virindiana Colet; UEM; Pinheiro, Andréia Cristina; UEM.
O objetivo deste trabalho foi avaliar o desempenho de duas semeadoras-adubadoras oferecidas comercialmente para plantio direto. Os ensaios foram realizados no Sítio Cazarotto, localizado no Distrito de Iguatemi, município de Maringá-Paraná, em Latossolo Vermelho Distrófico onde foram montados dois experimentos. No primeiro, foi utilizada uma semeadora-adubadora com mecanismo dosador do tipo disco horizontal e, o segundo, uma semeadora-adubadora com mecanismo do tipo pneumático. Utilizou-se delineamento de blocos ao acaso em arranjo de parcelas subdivididas com quatro repetições. Os tratamentos principais eram condições de cobertura do solo (vegetação espontânea, aveia dessecada e aveia dessecada + rolada) e os secundários as velocidades de deslocamento...
Palavras-chave: 5.03.00.00-8 Engenharia Agrícola população de plantas; Distribuição longitudinal; Produtividade; Soja (Glycine max L.) plants population; Longitudinal distribution; Yield; Soybean (Glycine max L.).
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5960

Produção e características físicas de sementes de mamoneira em função da posição do racemo e do fruto - DOI: 10.4025/actasciagron.v31i2.7038
Provedor de dados: 1
Autores: Machado, Carla Gomes; UNESP; Martins, Cibele Chalita; UNESP; Silva, Libia Belisario da; UNESP; Cruz, Simério Carlos Silva; UNESP.
Para avaliar a produção e características físicas de sementes de mamoneira, em função da posição do racemo e do fruto, foi conduzido um trabalho, em condições de campo, em Nitossolo Vermelho Estruturado, no município de Botucatu, Estado de São Paulo. Utilizou-se a cultivar AL Guarany 2002, a qual teve seus três primeiros racemos colhidos e subdividos em três terços, os quais constituíram os tratamentos. Para avaliação das características físicas dos racemos e frutos, foi determinado o comprimento dos racemos, o número de frutos por racemo, a dimensão dos frutos, o peso dos frutos e o número de sementes por fruto. Para avaliação das características físicas das sementes, foi determinado o teor de água, o tamanho e a massa de 1.000, além de avaliação da...
Palavras-chave: 5.01.00.00-9 Agronomia Ricinus communis L.; Posição da inflorescência; Oleaginosa; Produtividade Ricinus communis L.; Inflorescence position; Oil crop; Yield.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7038

Efeito da aplicação de biorregulador no desempenho agronômico e produtividade da soja - DOI: 10.4025/actasciagron.v30i5.5971
Provedor de dados: 1
Autores: Moterle, Lia Mara; UEM; Santos, Renato Frederico dos; 2Cooperativa Agropecuária e Industrial de Itambé; Braccini, Alessandro de Lucca e; UEM; Scapim, Carlos Alberto; UEM; Barbosa, Mauro Cezar; UEM.
O objetivo do trabalho foi avaliar o efeito da aplicação de biorregulador no desempenho agronômico das plantas e na produtividade de sementes da cultura da soja cultivar CD 216. O trabalho foi desenvolvido em dois anos agrícolas (2005/06 e 2006/07). Os tratamentos foram compostos pela combinação do tratamento de sementes (0 e 500 mL 100 kg-1 de sementes) com três doses de biorregulador (250; 375 e 500 mL ha-1) aplicadas via foliar em dois estádios de desenvolvimento da cultura (V5 e R3), mais a testemunha sem aplicação. As características avaliadas foram a altura das plantas, número de vagens por planta, produtividade e massa de 1.000 sementes. As características altura das plantas e número de vagens por planta não foram influenciadas pela aplicação do...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal soja; Sementes; Biorregulador; Produtividade; Stimulate® soybean; Seeds; Plant growth regulator; Yield; Stimulate®.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5971

Effects of stocking-density in flow-through system on the mussel Perna perna larval survival
Provedor de dados: 2
Autores: Turini, Caio Silva; Universidade Federal de Santa Catarina; Sühnel, Simone; Universidade Federal de Santa Catarina; Lagreze-Squella, Francisco José; Universidade Federal de Santa Catarina; Ferreira, Jaime Fernando; Universidade Federal de Santa Catarina; Melo, Claudio Manoel Rodrigues de; Universidade Federal de Santa Catarina.
This study evaluated the effects of larval densities, cultured in flow-through system, in the yield and quantity of larvae. The first experiment compared the larval yield of a flow­through system (80 larvae mL-1) and a batch system (8 larvae mL-1), which resulted in a higher yield and number of larvae in the flow­through system, after 23 days. The second experiment compared two larval densities (20 and 45 larvae mL-1) in flow­through system. The densities affected the yield after 15 and 23 days and the larvae final quantity after all tested times (8, 15, and 23 days). After 23 days of larviculture, the yield was highest for 20 larvae mL-1 and the larval number for 45 larvae mL-1. The third experiment also compared two larval densities (100 and 150 larvae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.06.03.00-0 bivalve mollusc; Yield; Larviculture; Density.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23685

Carcass characteristics of sheep fed diets with slow-release urea replacing conventional urea
Provedor de dados: 2
Autores: Alves, Evanilton Moura; Instituto Federal Baiano; Pedreira, Márcio dos Santos; Universidade Estadual do Sudoeste da Bahia; Moreira, Beatriz Silva; Universidade Estadual do Sudoeste da Bahia; Freire, Leile Daiane Ribeiro; Universidade Estadual do Sudoeste da Bahia; Lima, Thiago Ramos; Universidade Estadual do Sudoeste da Bahia; Santos-Cruz, Cristiane Leal dos; Universidade Estadual do Sudoeste da Bahia.
This study aimed to evaluate the effects of adding slow-release urea to replace conventional urea in the diet on carcass characteristics of feedlot sheep. We used 20 Santa Ines x SRD rams, with average body weight of 21.1±1.2 kgand average age of 120 days, distributed in a completely randomized design with 5 treatments. The replacement levels used as treatments were 0, 20, 40, 60, and 80%, composing diets of about 12% crude protein, with 50 % Tifton-85 hay and 50% concentrate. There was no influence of slow release urea on weight at slaughter (35.17 kg), and on hot (16.75 kg) and cold (16.24 kg) carcass weight, but the yield of these carcasses showed quadratic trend, revealing lower percentages at 48.5 and 47.63% replacement levels, respectively. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias; Produção Animal meat cuts; Non-protein nitrogen; Nutrition; Small ruminants; Yield.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21379

Dehydrated citrus pulp digestibility and the effect of its inclusion in diet on the performance of growing rabbits - doi: 10.4025/actascianimsci.v35i1.12359
Provedor de dados: 2
Autores: Maria, Bruno Giovany; Universidade Estadual de Maringá; Scapinello, Cláudio; Universidade Estadual de Maringá; Oliveira, Andréia Fróes Galuci; Universidade Estadual de Maringá; Monteiro, Ana Carolina; Universidade Estadual de Maringá; Catelan, Fernanda; Universidade Estadual de Maringá; Figueira, Josianny Limeira; Universidade Estadual de Maringá.
Several experiments were conducted to determine the digestibility of dehydrated citrus pulp (DCP) and evaluate its effect on rabbit feed. Digestibility assay comprised 30 rabbits fed on two diets: a reference diet and a diet in which 20% consisted of DCP. The digestibility assay comprised 10 days for adaptation and four days for feces collection. The digestibility coefficient and digestible nutrient rates for DM, CP, NDF, ADF, and CE of DCP were respectively 83.75 and 76.04%; 70.12 and 5.03%; 40.14 and 9.52%; 68.98 and 15.09%; and 81.48% and 3394 kcalDE kg-1 DM. Performance assay consisted of 120 growing rabbits receiving diets with six DCP levels (0, 20, 40, 60, 80 and 100%) to replace corn. Linear decrease (p &amp;lt; 0.01) in daily feed intake and...
Tipo: Ensaio de digestibilidade; análise laboratorial; análise de desempenho
Palavras-chave: 5.04.05.00-4 carcaça; Rendimento; Nutriente; Fibra digestível; Pectina carcass; Yield; Nutrient; Digestible fiber; Pectin.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12359

Growth of the microalgae Tetraselmis tetrathele and nitrate depletion in culture medium Guillard f/2 and Conway - doi: 10.4025/actascibiolsci.v35i2.13971
Provedor de dados: 3
Autores: Coelho, Anderson Alan da Cruz; Instituto Federal do Ceará; Barros, Mário Ubirajara Gonçalves; Universidade Federal do Ceará; Bezerra, João Henrique Cavalcante; Universidade Federal do Ceará; Silva, José William Alves da; Universidade Federal do Ceará; Moreira, Ricardo Lafaiete; Universidade Federal do Ceará; Farias, Wladimir Ronald Lobo; Universidade Federal do Ceará.
This study aimed to evaluate the effect of nutrient depletion during the cultivation of the microalgae Tetraselmis tetrathele, and to verify the algal growth and productivity in different culture media (Guillard f/2 and Conway). The experiment was conducted in nine-liter containers, with working volume of eight liters, salinity 35 ± 2‰, temperature 28 ± 1°C, with constant light and aeration, around 200 μE cm-2 s-1 and 3 L air min.-1. Results showed that microalgae development caused nutrient depletion, since we observed an inversely proportional relationship between nitrate concentration and algal biomass during the cultivation. Regarding the culture media, a higher algal productivity was observed in the cultivation developed in Conway medium (p &amp;lt;...
Tipo: Estudos morfológicos
Palavras-chave: Ciências Agrárias; Recursos Pesqueiros e Engenharia de Pesca algal concentration; Yield; Nutrients Biologia Geral.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13971

Evaluation of Crop Setting Systems for Four Summer Squash Varieties Cucurbita maxima (Carr.) Millán var. zapallito
Provedor de dados: 113
Autores: De Grazia,Javier; Tittonell,Pablo Adrián; Salvador Perniola,Omar; Caruso,Ariel; Chiesa,Angel.
The advantages of transplanting with respect to direct sowing has been widely reported in several vegetable species, but there are few studies in Cucurbits, and even fewer in summer squash (Cucurbita maxima (Carr.) Millán var. zapallito). Morphological and physiological characteristics of hybrid varieties determine earliness of between 5 to 10 days compared to traditional cultivars. The aim of the study was to compare the summer squash setting systems, direct sowing and nursery seedlings, and to determine their effect on yield and earliness in different genotypes. The hybrid varieties F1 Angelo and Espejo, and the standard varieties Any and Any Plus were used combined with two setting systems (direct sowing and nursery seedlings). Male and female flowering...
Tipo: Journal article
Palavras-chave: Transplant; Direct sowing; Hybrid; Variety; Yield.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072005000200002

Evaluation of Green Asparagus Varietis in the Bio-Bio Region, Chile
Provedor de dados: 113
Autores: González A,María Inés.
A trial was established using three month old asparagus (Asparagus officinalis L.) plants in a volcanic soil at Chillán (36°32’ S; 71°55’ W). Experimental design was randomized complete blocks with four replicates. Plots had four 6m long rows of plants. Distance between rows was 1.5 m and in-row 0.2 m. The evaluated cultivars were: ‘Atlas’, ‘Grande’ and ‘Apollo’ from Asparagus Seeds and Transplants (California), ‘Jersey Giant’, ‘Jersey Gem’, ‘Jersey General’, ‘Jersey King’, ‘Jersey Knight’ and ‘Jersey Supreme’ from Jersey Asparagus Farms (New Jersey), and the controls were ‘UC-157’ F1 and F2. Spears were trimmed 18 cm long after harvest. The highest cumulative marketable yield was obtained by ‘Jersey Supreme’ (43 Mg ha-1 in five years), and the lowest one...
Tipo: Journal article
Palavras-chave: Cultivar; Number of spears; Quality; Yield.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072007000300001

Finite modelling of growth and yield of okra using different tillage systems in Obubra, Nigeria
Provedor de dados: 111
Autores: Odey, Simon Ogbeche.
Abstract:  Field experiment was conducted at the teaching and research farm of Cross River University of Technology, Faculty of Agriculture and Forestry, Obubra Campus. The study was aimed at finite modelling of growth and yield of Okra (Abelmoschus esculentus L.) using different tillage systems. Randomised Complete Block Design (RCBD) was used in the field, 1,024m2 with three treatments and three replicates. These treatments were Conventional, Conservative and Zero tillage. Each treatment had three replicates of size 8m x 8m, separated from each other by 2m for manoeuvring of the tractor. Planting of okra and other cultural practices were carried out. Soil samples were collected for analysis in the laboratory. Data on growth parameters and yield of okra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Finite; Modelling; Growth; Yield; Okra; Tillage Systems; Soil.
Ano: 2022
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7067

Effect of zinc foliar application at different physiological growth stages on yield and quality of wheat under sandy soil conditions
Provedor de dados: 111
Autores: El-Dahshouri, Mohamad Farouk.
Micronutrients are critical factor for plant production. The main target of this study was to evaluate the effect of rates and time of zinc foliar application on growth, nutrient contents, yield and its components of wheat Sakha94 and Gemmieza9 cultivars under sandy soils conditions. In this regard two field experiments were conducted during 2013/2014 and 2014/2015 seasons at Ismailia Agricultural Experimental Station of the Agricultural Research Center (ARC), Ismailia Governorate, Egypt.Statistical analysis of the illustrated data indicated that all studied characters were significantly affected by zinc foliar application. The highest values of grain and straw yield were resulted under two sprays as compared to the other treatments of zinc application....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dr; Plant Nutrition Wheat; Growth; Nutrient Status; Yield; Zinc Foliar Application; Sandy Soils.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4511

Investigation of different mechanical weeding methods performance for weed control efficiency, mechanical injuries and yield in three bean varieties
Provedor de dados: 111
Autores: Hedayatypour, Abolfazl; Goodarzi, Mustafa; Mostafavirad, Marefat.
       In many agricultural systems around the world, competition of weeds is one of the major factors reducing crop yield. This research was carried out to study the performance of mechanical methods for weed control, mechanical damage, yield and yield components of three bean genotypes in 2012 and 2013 cropping seasons. The experiment carried out as split plot arrangement based on complete block design with three replications in Agricultural and Natural Resources Research and Education Center in Markazi Province, Iran, Arak. The experimental treatments were comprised of three bean lines and varieties including Sadri, KS-21189 and COS16 as main plots and four mechanical methods of weeds control including: sweep type weeder, rotary type weeder, rolling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic traits; Bean; Weeds; Weeding performance; Weeding machines; Yield.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6067

Effects of variety and plant spacing on weight, surface and yield of tobacco leaf (K326 and 347 Var.)
Provedor de dados: 111
Autores: Azadbakht, Mohsen; Ghajarjazi, Ehsan; Kiapei, Ali; Jafari, Hassan; Salehi, Ebrahim; Pishgar, Reza.
Tobacco is one of the important agricultural and industrial products which plays a crucial role in economics and income of the producing countries and tobacco’s leaves are actually used commercially. In this study, the effects of two tobacco varieties K326 and 347 in three plant spacing of 30, 40, and 50 cm (with density of 33333, 25000 and 20000 plants/ha) on physical properties and weight of tobacco leaves are discussed. The results of variance analysis showed that the ¬¬¬effects of variety and plant spacing on leaf surface in 5% level were significant. Interaction effect of these two factors wasn’t significant. Also results showed that independent and interaction effects of plant spacing and different varieties of tobacco on leaf weight were significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tobacco; Plant spacing; Leaf; Weight; Yield.
Ano: 2016
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3646

Production and evaluation of compost tea for cultivation of Amaranthus hybridus
Provedor de dados: 111
Autores: BAKO, TANKO; MAMAI, EZEKIEL AMBO; ISTIFANUS, AKILA BARDEY.
The application of organic fertilizer to the soil is considered as good agricultural practice because it improves the fertility of the soil and plant quality. The aim of the study was to produce compost tea using poultry droppings, cow dungs and water leaf (Talinum triangulare) in a ratio 5:5:1 and evaluate its effects on soil properties, growth and yield of Amaranthus hybridus. The study was carried out in Jalingo, Taraba State, North-Eastern Nigeria in July, 2019. The experimental variables include control (no treatment), 1 kg of compost per 10 L of water compost tea, 1 kg of compost per 20 L of water compost tea, 1 kg of compost per 30 L of water compost tea, 500 kg ha-1solid compost and 500kg ha-1 NPK fertilizer. The treatment combinations were done in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Yield; Plants; Organic; Fertilizer.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6941

Evaluation of synthetic and natural water absorbing soil amendments for potato production in a semi-arid region
Provedor de dados: 111
Autores: Shengtao Xu; Oat Scientific and Technical Innovation Team, Inner Mongolia Agricultural University; Lei Zhang; Industrial Crop Research Institute, Yunnan Academy of Agricultural Sciences; Neil B McLaughlin; Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada; Junzhen Mi; Oat Scientific and Technical Innovation Team, Inner Mongolia Agricultural University; Qin Chen; College of Agronomy, Northwest A&amp;F University; Jinghui Liu; Oat Scientific and Technical Innovation Team, Inner Mongolia Agricultural University.
Palavras-chave: Crop cultivation and tillage science soil amendments; Potato; Soil moisture content; Yield; Water use efficiency; Economic return.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3011

Evaluation of synthetic and natural water absorbing soil amendments for potato production in a semi-arid region
Provedor de dados: 111
Autores: Xu, Shengtao; Zhang, Lei; McLaughlin, Neil B; Mi, Junzhen; Chen, Qin; Liu, Jinghui.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop cultivation and tillage science soil amendments; Potato; Soil moisture content; Yield; Water use efficiency; Economic return.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3011

Investigation of agricultural mechanization status in  corn production of Iran
Provedor de dados: 111
Autores: Zangeneh, Morteza; Banaeian, Narges.
For determination and assessing the effect of agricultural mechanization in irrigated corn of Iran, two indicators have been used: cultivated area (ha) and yield (kg/ha).  Several regression models have been built, using Mechanization Level (ML) and Mechanization Ownership (MO) of all agricultural operations, as input, and cultivated area and yield as output, separately.  The survey was carried out by means of data obtained from Agricultural Ministry of Iran in the period of 2001-2008.  The results revealed that mechanization ownership of planting and harvesting have a significant effect on cultivated area of corn in Iran with 95% and 99% confidence, respectively.  Based on obtained results, agricultural mechanization has an important role in improvement...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yield; Regression model; Mechanization.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2007

Response of soybean cultivars to weed control treatments
Provedor de dados: 111
Autores: Dawood, Mona Gergis.
Two field experiments were conducted in two successive seasons, 2015 and 2016, at the experimental farm of the National Research Centre at Nubaria, Egypt, during summer seasons to determine weed management can improve soybean competitiveness with weeds, thus helping to achieve its yield potential. The experiment included three soybean cultivars ( Giza 111, Giza 21 and Crawford) and six weed control treatments, including oxadiargyl, butralin, metribuzin, bentazone + clethodium, two hand and a nonweeded treatment (control). Great reduction in dry weight of broadleaved, grassy and total weeds after 60 and 90 days from sowing was noticed in the plots cultivated with Giza 111 cultivars. Also, Giza 111 cultivars markedly produced greater plant height, SPAD, NAR,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Two hand hoeing; Growth; Yield; Oil percentage.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4438

The growth and yield of the plant Azivash (Corchorus Olitorious L.) in various densities and irrigation regimes
Provedor de dados: 111
Autores: Azadbakht, Mohsen; Hosaini, Rahim; Ghorbani, Mohammad Hosain; aldarwish, zuhair.
The Azivash plant was cultivated at densities of 20, 27, 40 and 80 m-2 and three irrigation intervals of 6, 12 and 18 days with three replications using a randomized complete block design. Cultivation was considered in a row and row spacing of 25 cm was used. Plant spacing on the row was respectively 5, 10, 15 and 20 cm. At harvesting time when the plant height was about 50 cm, the components of plant height (cm), number of leaves per plant (number), new plant amount of yield (kg ha-1), number of branches per plant (number), leaf area index (leaf area), fresh weight of leaves and stems (kg ha-1), dry weight of leaves and stems, and total dry matter per hectare (kg ha-1) were determined. The results showed that both components of the irrigation and plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azivash; Yield; Plant growth; Plant density; Irrigation regime.
Ano: 2015
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3454

IDENTIFICATION OF PUDDLING SETTLING PERIOD OF VARIOUS SOIL TEXTURE FOR MECHANICAL RICE TRANSPLANTING
Provedor de dados: 111
Autores: Al Mamun, Muhammad Rashed; Islam, Md. Amirul; Lucky, Afroja Kabir; Hossen, Md. Anwar.
Primary satisfaction in seedling transplanting is a successful procedure of transplanting with mechanical rice transplanter. For rice cultivation puddling is generally done for a better transplanting. The study was conducted to characterize the optimum puddling settling period for various soil texture. The plots were prepared by following all the possible operations to provide a favorable field condition. Each plot was transplanted at eight different times for settling period of four to thirty two hours in clay, sand and silt textured soil. Primarily 76 hills in each plot, average planting depth 6 cm and seedlings density was found seven from each field. The transplanting performance character was found in different values. It was observed that percentage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transplanting; Puddling; Settling period; Texture; Optimum; Yield.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6043

Optimization of extraction of deoiled rice bran protein and its utilization in wheat based cookies
Provedor de dados: 111
Autores: Mann, Gurleen Singh; Bhatia, Surekha; Kaur, Dr. Amarjeet; Alam, Dr. M S.
Deoiled rice bran protein  was extracted using alkali extraction method Optimization of protein extraction by alkali extraction method was done using box-behnken design of response surface methodology (RSM). Yield and protein content of protein concentrate were found to be affected by extraction conditions viz. bran/water ratio, pH and time. pH had most significant effect on yield of protein concentrate followed by time of extraction and bran/water  of extraction solvent. Optimum process variables for extraction of protein concentrate from deoiled rice bran were 0.175 bran/water ratio, 9.5 pH of solution and 45 min of extraction time which gave 8.63% yield of protein concentrate having protein content of 83.75%. Albumin (37.23%), globulin (20.27%) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Engineering; Post harvest technology deoiled rice bran; Protein; Yield; Extraction conditions; Cookies.
Ano: 2016
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3872

Crop water requirements, biomass and grain yields estimation for upland rice using CROPWAT, AQUACROP and CERES simulation models
Provedor de dados: 111
Autores: Akinbile, Christopher Oluwakunmi.
This study estimated crop water requirements using CROPWAT while AQUACROP and CERES models evaluated performance in simulating biomass and grain yield of upland rice’s response to different irrigation schedule. NERICA 4 was subjected to five treatment given as: full (100%ET), good (80%ET), medium (60%ET), average (40%ET), and low (20%ET) and three replicates in a randomized block design. It was planted at the farmyard of the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria for two seasons 2015 and 2016 and the results of the first season was used in model calibration while second season’s result was used in validation. Biomass and grain yields values were obtained and compared with simulated values from AQUACROP and CERES and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: NERICA 4; Water requirements; Yield; Simulation models; Irrigation schedule.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5636

Microclimate and ramulosis occurrence in a cotton crop under three plant population densities in Southern Brazil
Provedor de dados: 114
Autores: Monteiro,J. E. B. A.; Sentelhas,P. C.; Chiavegato,E. J.
This study aimed to evaluate crop microclimate and its influence on ramulosis disease in a cotton crop conducted in three population densities. The experiment was carried out in Piracicaba, state of São Paulo, Brazil, where the genotypes IAC 23 and Coodetec 401 were sowed with the following plant population densities: 55,000; 111,000; and 166,000 plants per hectare. To start the epidemic process, a conidia suspension of Colletotrichum gossypii var. cephalosporioides was inoculated in the crop at 30 and 45 days after sowing. The weather variables, air temperature, relative humidity and leaf wetness duration, were recorded with an automatic weather station located at the experimental area and with six micro-stations located within the crop canopy (three in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air temperature; Leaf wetness duration; Colletotrichum gossypii var. cephalosporioides; Yield; Disease intensity.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2006000200001

Effects of chlorocholine chloride and paclobutrazol on cassava (Manihot esculenta Crantz cv. Rocha) plant growth and tuberous root quality
Provedor de dados: 114
Autores: Medina,R.; Burgos,A.; Difranco,V.; Mroginski,L.; Cenóz,P.
The effects of chlorocholine chloride (CCC) and paclobutrazol (PBZ) foliar application on shoot and root parameters of cassava field-grown plants were studied (0, 45 and 90 mg active ingredient per plant). CCC and PBZ reduced total plant and first branch height, aerial fresh mass and tuberous root number. PBZ delayed branching and significantly decreased tuberous root fresh mass, while CCC caused no modifications in these parameters. In addition, CCC and PBZ treatments did not modify tuberous root diameter, while PBZ reduced tuberous root length significantly. Starch content was increased by both growth regulators at the lower dose, whereas dry matter content was increased only by CCC. In conclusion, CCC suppresses excessive vegetative growth, favours...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorocholine chloride; Manihot esculenta; Paclobutrazol; Starch; Yield.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2012000100006

Season, fertilization, and yield of varieties of Pennisetum purpureum
Provedor de dados: 115
Autores: Ramos-Trejo,O. Santiago; Victoria-Graniel,C. Arturo; Sandoval-Gío,J. José.
Pennisetum purpureum has an extended use as forage and further knowledge related to the seasonal influence and fertilization could improve its cultivation. The effects of dry and rainy season and application of fertilizers (200-60-00), on the yield of four varieties of P. purpureum (Taiwan, OM-22, Maralfalfa, CT-115), and a homogeneous mixture of them were evaluated. The study, with four replicates, was conducted at Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Tizimín, México, and lasted 10 months. Dry matter (DM), crude protein, leaf/stem ratio, stalks per cluster, and plant height, were assessed. Mean values of DM of all treatments in rainy season were significantly different with respect of dry season (36 and 28 t ha-1). Dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical composition; Dry matter; Tropical forages; King Napier grass; Yield.
Ano: 2015
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000800002

Study of heterosis in Bangladeshi Chilli (Capsicum annuum L.) Landraces
Provedor de dados: 115
Autores: Hasanuzzaman,M.; Hakim,M. A.; Hanafi,M. M.; Shukor-Juraimi,Abdul; Islam,M. M.; Shamsuddin,A. K. M.
Chilli is an important cash crop in Bangladesh but average yield is very low (0.89 t ha-1) and genetic potentiality of Bangladeshi chilli landraces for hybrid variety development has not been evaluated. The objective of this study was to find out heterotic behavior following Gardner and Eberhart model (1966) II. Six different homozygous divergent parents CCA 2, CCA 5, BARI Morich 1, CCA 11, CCA 15 and CCA 19 were used to estimate heterosis. A significant amount of heterosis was present in yield and yield contributing traits. Estimate of variety heterosis for yield per plant was significantly positive in CCA 5 and BARI Morich 1. In BARI Morich 1, the significant and positive variety heterosis for yield per plant was associated with significant and positive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum L; Indigenous X exotic cross; Yield.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700005

Efficiency of boron application in an Oxisol cultivated with banana in the Central Amazon
Provedor de dados: 42
Autores: Moreira,Adônis; Castro,César de; Fageria,Nand K.
In the Amazon region, there is no information on the fertilization of banana plants with boron (B). Besides this, the extractant (hot water) currently used to test B concentrations has many limitations. The aim of this work was to study the effect of B on the fruit yield and quality of banana plants of the Cavendish (AAA) sub-group, grown in dystrophic Yellow Latosol (Oxisol or Xanthic Ferralsol), in the Amazonas State, Brazil. The experimental design was completely randomized split plot in a 4 x 2 factorial scheme, composed of four B rates (0, 4, 8 and 12 kg ha-1) and two harvest cycles (sub-treatments), with four replicates. The B availability in the soil was determined by three extractants: Mehlich 3, hot water and KCl 1.0 mol L-1. The application of B...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Yield; Methods of soil analysis; Post-harvest.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000400030

Analysis of morpho-agronomic and climatic variables in successive agricultural years provides novel information regarding the phenological cycle of Jatropha in conditions of the Brazilian cerrado
Provedor de dados: 42
Autores: DOMICIANO,GISELE P.; ALVES,ALEXANDRE A.; LAVIOLA,BRUNO G.; ALBRECHT,JULIO C.
Phenological studies can provide information that enables the understanding of the dynamics of plants and how these dynamics are related to the biotic and abiotic environment. In order to study the phenological phases of Jatropha during two agricultural years, agronomic and climatic variables, such as temperature and rainfall, were evaluated. Data for each variable in each year and each genotype were subjected to analysis of variance (ANOVA) and the differences were tested at 5% probability by F test. In addition, the correlation of growth behavior and reproductive development of two Jatropha accessions (CNPAE-102 and CNPAE-169) as a function of time elapsed after the start of the phenological cycle with climatic variables were analyzed through Pearson's...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jatropha curcas; Flowering; Growth; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401985

Sugars levels of four sugarcane genotypes in different stem portions during the maturation phase
Provedor de dados: 42
Autores: PEREIRA,LAÍS F.M.; FERREIRA,VILMA M.; OLIVEIRA,NELSON G. DE; SARMENTO,PEDRO L.V.S.; ENDRES,LAURÍCIO; TEODORO,IÊDO.
ABSTRACT Maturation is a characteristic of sugarcane plant (Saccharum spp.) and even when grown under the same soil and climate conditions the varieties differ on the maturation curve. Thus, studies that allow establishing maturation curves of different sugarcane genotypes in the local soil and climate may indicate the proper harvesting period to ensure better quality of the raw material. This study aimed to analyze the levels of soluble sugars during the maturation phase and assess the technological and productivity indexes of four irrigated sugarcane genotypes in the region of Rio Largo, Alagoas. The experiment was conducted in randomized blocks in a 4 x 2 x 5 factorial: four genotypes (RB92579, RB98710, RB99395 and RB961003), two stem portions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fructose; Glucose; Sucrose; Total soluble solid; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301231

Strawberry (Fragaria X ananassa Duch.) yiel das affected by the soil pH
Provedor de dados: 42
Autores: Milosevic,Tomo M.; Milosevic,Nebojsa T.; Glisic,Ivan P.
Two-year trials (20062007) suggested that the use of calcium oxide (CaO) on acid soils increased soil pH and yields in strawberry cultivars Marmolada, Selena and Senga Sengana, under the environmental conditions of Cacak (Western Serbia). The highest yield was obtained when CaO was applied at 750 kg ha-1 rate. Further increase in rate up to 1,500 kg ha-1 did not show corresponding increase in yield; the result was a slight yield drop compared to the peak yield shown at 750 kg ha¹ rate. Overall, yields at rates above 750 kg ha¹ were still higher than control and in the treatment employing lowest CaO application rate of 250 kg ha-1.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acid soils; CaO; PH; Strawberry; Yield.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000200012

Effect of tillage system on yield and weed populations of soybean ( Glycin Max L.)
Provedor de dados: 42
Autores: Hosseini,Seyed Z.; Firouzi,Saeed; Aminpanah,Hashem; Sadeghnejhad,Hamid R.
Field experiment was conducted at Agricultural and Natural Resources Research Center of Golestan Province, Iran, to determine the effects of tillage system and weed management regime on yield and weed populations in soybean ( Glycin max L.). The experimental design was a split plot where the whole plot portion was a randomized complete block with three replicates. Main plots were tillage system: 1- No-till row crop seeding, 2- No-till seed drilling, 3- Tillage with disc harrow and drill planting, 4- Tillage with chisel packer and drill planting. The subplots were weed management regimes: 1-Weed control with herbicide application, 2- Hand weeding, 3- Herbicide application plus hand weeding, and 4- Non-weeding. Results indicated that the main effects of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soybean; Tillage systems; Weed management regimes; Yield; Yield components.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100377

Effect of chick weight on performance and carcass yield of broilers
Provedor de dados: 45
Autores: Lara,L.J.C.; Baião,N.C.; Cançado,S.V.; Teixeira,J.L.; López,C.A.A.; Duarte,F.D.; Michalsky,V.B.
The influence of weight classes (light, medium and heavy) of Ross chicks on performance and carcass yield and main cuts, was studied using a completely randomized design with six replicates of 30 males and 30 females each. The chicks were fed on the same diets during the growing period (1-43 days). The live weight, feed intake, feed:weight gain ratio, viability, carcass yield and main cuts (breast, whole leg, wing and back) and percentages of giblets (gizzard, liver, heart and guts) were analyzed. The heavy weight class chicks were heavier (P&lt;0.05) than the light weight class chicks, during all the growing period and showed higher feed consumption (P&lt;0.05) than the light and medium classes chicks. No differences among weight classes chicks concerning...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Initial body weight; Performance; Yield.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600015

Influence of somatic cell count and total bacterial counts of raw milk in cheese yield using small-scale methodology
Provedor de dados: 45
Autores: Silva,N.M.A.; Bastos,L.P.F.; Oliveira,D.L.S.; Oliveira,M.C.P.P.; Fonseca,L.M.
The objectives of this study were to evaluate the influence of SCC and TBC of raw milk in cheese yield, using a reduced scale method, and to evaluate theoretical prediction of cheese yield. 270 samples of raw milk were split into three SCC levels (below 200,000; 200,000-750,000; above 750,000 SC/mL) and three TBC levels (below 100,000; 100,000-750,000; above 750,000 CFU/mL). Raw milk samples were submitted to compositional analysis (fat, protein, lactose, total solids and SNF content), SCC, TBC, freezing point and pH. The production of the small-scale cheese was conducted according to the method developed at Cornell University (Melilli et al., 2002). Cheese whey samples were submitted to compositional analysis (fat, total protein, true protein, lactose,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Raw milk; SCC; TBC; Yield.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000500038

Comparison of testers in the selection of S3 families obtained from the UENF-14 variety of popcorn
Provedor de dados: 53
Autores: Pena,Guilherme Ferreira; Amaral Júnior,Antonio Teixeira do; Gonçalves,Leandro Simões Azeredo; Vivas,Marcelo; Ribeiro,Rodrigo Moreira; Mafra,Gabrielle Sousa; Santos,Adriano dos; Scapim,Carlos Alberto.
ABSTRACT The use of topcross has proven to be an interesting option for the maize crop; however, for the popcorn, there is little information about the choice of the appropriate tester. In this context, this study aimed to analyze four testers including two open pollinated varieties(BRS Angela and UENF-14), one topcross hybrid (IAC125) and a line (P2), to evaluate the combining ability of 50 S3 families of popcorn, obtained from the UENF-14 variety. Popcorn families were evaluated for grain yield (GY) and popping expansion (PE). The estimates of general and specific combining abilities were obtained and the discrimination of each tester through differentiation index was carried out. The testers BRS Angela (for GY) and IAC 125 (for PE) were the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays var. everta; Topcross; Yield; Popping expansion.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000200135

Y-shaped and fruiting wall peach orchard training system in subtropical Brazil
Provedor de dados: 53
Autores: Sobierajski,Graciela da Rocha; Silva,Taiane Santos; Hernandes,José Luiz; Pedro Júnior,Mário José.
ASBTRACT Peach as commercial crop in Brazil is usually grown in open vase training system. However, in the 1970s large orchards changed to the Y-shaped system and higher density of plants. This system is the most used in São Paulo state because it allows orchard densification. However, the longevity of the trees is reduced from 15 to 8 years being the excessive exposure of internal branches to solar radiation the main reason for the reduction. Aiming to offer new alternatives of training system for peach, an experiment was carried out to evaluate the fruiting wall in comparison to Y-shaped, using the cultivar Tropic Beauty budded onto cultivar Okinawa. Ten plants by treatment were used as repetition and microclimatic equipment was installed inside the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yield; Soluble solids; Titratable acidity; Tropic Beauty; Okinawa.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000200229

Early performance of ‘Kampai’ and ‘Rubimel’ peach on 3 training systems
Provedor de dados: 53
Autores: Pasa,Mateus da Silveira; Fachinello,José Carlos; Schmitz,Juliano Dutra; Rosa Júnior,Horacy Fagundes da; Franceschi,Émerson de; Carra,Bruno; Giovanaz,Marcos Antônio; Silva,Carina Pereira da.
ABSTRACT The aim of this study was to examine the early performance of ‘Kampai’ and ‘Rubimel’ peach on 3 training systems. The study was conducted between 2010 and 2013. Treatments were the training systems ‘Ypsilon’, Central Leader, and Open Center, arranged in a randomized complete block design. Assessed parameters were production per tree, fruit weight, yield, fruit firmness, and soluble solids. The early yield and economic return are greater in Central Leader training system for both cultivars. Besides, training system does not influence fruit quality attributes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Yield; Precocity; Planting density.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100082

Nitrogen use efficiency in modern wheat cultivars
Provedor de dados: 53
Autores: Todeschini,Matheus Henrique; Milioli,Anderson Simionato; Trevizan,Diego Maciel; Bornhofen,Elesandro; Finatto,Taciane; Storck,Lindolfo; Benin,Giovani.
ABSTRACT The nitrogen use efficiency (NUE) is defined as the capacity of a given genotype in take advantage of the applied nitrogen (N) and transform it in biomass and grains. The objective of this study was to evaluate 12 wheat cultivars as to the NUE and its components. The experiment was conducted in a controlled environment, in a randomized block design with three replications. Twelve wheat cultivars were submitted to four N supply levels (0, 80, 160 and 240 kg of N∙ha–1). The data were submitted to analysis of variance, means multiple comparison, polynomial regression, and path analysis. The nitrogen remobilization efficiency (NRE) was the main NUE component of the evaluated cultivars, in both low and high conditions of nitrogen fertilization. In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Nitrogen nutrition; Path analysis; Chlorophyll; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000300351

Potato potential yield based on climatic elements and cultivar characteristics
Provedor de dados: 53
Autores: Pereira,André Belmont; Villa Nova,Nilson Augusto; Ramos,Valdir Josué; Pereira,Antonio Roberto.
There is currently a great deal of interest in estimating crop productivity as a function of climatic elements by means of different crop weather models. An agrometeorological model is presented based on carbon dioxide assimilation maximum rates for C3 plants, fraction of photosynthetically active radiation, air temperature, photoperiod duration, and crop parameters under tropical climate conditions. Such crop parameters include leaf area and harvest indexes, dry matter content of potato tubers, and crop cycles to estimate potato potential yields. Field data from observed productivity obtained with the cultivar Itararé (IAC-5986), grown under adequate soil water supply conditions at four different regions in the State of São Paulo (Itararé, Piracicaba,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelling; Solanum tuberosum L.; Climatic elements; Crop indexes; Yield.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052008000200008

Productivity, adaptability and stability of high-oleic peanut lines in the State of São Paulo
Provedor de dados: 53
Autores: Santos,João Francisco dos; Godoy,Ignácio José de; Moraes,Andrea Rocha Almeida de; Michelotto,Marcos Doniseti; Freitas,Rogério Soares de; Bolonhezi,Denizart; Cavichioli,José Carlos; Martins,Antônio Lúcio Mello.
ABSTRACT Estimating stability and adaptability parameters of cultivars is a widely used study to access the genotype × environment interaction, in order to identify the best genotypes for each cultivation area. In this study, the adaptability and stability parameters were estimated in eight high-oleic lines and two peanut cultivars in 11 experiments in the State of São Paulo, Brazil, from 2008 to 2013, based on the data of the plots mean productivity (Kg·ha–1), with the objective of recommending the most productive genotypes in peanut producing regions in the State of São Paulo. The design used for these experiments was the randomized complete blocks, with four replications. Lines L. 599 and L. 551 were the best genotypes regarding overall adaptability and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis hypogaea L.; Yield; Genotype × environment interaction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200265

Statistical methods to study adaptability and stability in breeding lines of food-type soybeans
Provedor de dados: 53
Autores: Freiria,Gustavo Henrique; Gonçalves,Leandro Simões Azeredo; Furlan,Felipe Favoretto; Fonseca Junior,Nelson da Silva; Lima,Wilmar Ferreira; Prete,Cássio Egidio Cavenaghi.
ABSTRACT The grains of food-type soybean cultivars, which are characterized by the absence of lipoxygenases and the presence of high levels of proteins and isoflavones, are regarded as functional foods with high acceptance by consumers. However, few cultivars of food-type soybeans are currently available in the Brazilian market. The aim of this work was to study the adaptability and stability of various genotypes of food-type soybeans and to compare the performance of methods, which are based on analysis of variance, non-parametric, regression, multivariate and mixed models. Ten lines of food-type soybeans obtained from the Breeding Program of Soybeans for Human Consumption of the State University of Londrina (UEL/BPSHC) and two commercial varieties, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Yield; Non-parametric; Regression; Multivariate; Mixed models.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200253

Pruning management of Chardonnay grapevines at high altitude in Brazilian southeast
Provedor de dados: 53
Autores: Mendonça,Tania dos Reis; Mota,Renata Vieira da; Souza,Claudia Rita de; Dias,Frederico Alcântara Novelli; Pimentel,Rodrigo Meireles de Azevedo; Regina,Murillo de Albuquerque.
ABSTRACT The agronomical responses of Chardonnay, a variety indicated for sparkling wine production, is influenced by the vineyard management and the edaphoclimatic conditions of the region. The objective of this study was to evaluate the effects of two pruning types (Royat and double Guyot) on vegetative and reproductive development of Chardonnay vine growing at high altitude in the Brazilian southeastern region. The experiment was carried out in a commercial vineyard located at 1,280 m of altitude in Divinolândia, São Paulo State, Brazil. The Chardonnay vines (clone 96), grafted onto 1103 Paulsen rootstock and trained in a vertical shoot positioning trellis system, were assessed. Vegetative vigor, bud fruitfulness, production and physicochemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera; Royat pruning; Double Guyot pruning; Vegetative vigor; Yield; Grape composition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100057

Extraction of pectin from apple pomace
Provedor de dados: 52
Autores: Canteri-Schemin,Maria Helene; Fertonani,Heloísa Cristina Ramos; Waszczynskyj,Nina; Wosiacki,Gilvan.
As apple-processing units are now in expansion in Brazil, industrial by-products like pomace play an important role in pectin manufacture. The objective of this article was to determine a pratical follow-up to the extraction of pectin from apple pomace and to characterize it in a laboratory, on a small scale, aiming at establishing the optimum conditions for acid extraction. The highest yields were obtained when [1]apple pomace was dried and ground to obtain an apple flour to be used as raw material, [2] citric or nitric acids were used and [3] when the citric acid concentration was 6.2 g/100 ml and the time of reaction was 153 minutes. The apple variety in itself was not significant in pectin yield. The degree of esterification (DE = 68.84 %) of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apple pomace; Pectin; Agricultural wastes; Yield; Extraction; Response Surface Methodology.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200013

Microrganismos eficazes na produção da cultura do feijoeiro
Provedor de dados: 52
Autores: Ronzelli Júnior,Pedro; Buff,Marly Terezinha Coradassi; Koehler,Henrique Soares.
Em razão da importância do feijão como alimento e da necessidade de produzir mais dessa fabácea (leguminosa) foram conduzidos dois experimentos, nos anos agrícolas de 1995/96 e 1996/97, para avaliar a ação fertilizante do produto microrganismos eficazes (EM) em comparação com a adubação química NPK tradicional. O trabalho experimental foi realizado na Universidade Federal do Paraná - Estação Experimental do Canguiri, em Pinhais, PR, em área uniforme com solo caracterizado como Latossolo Vermelho Amarelo Álico. O preparo do solo foi o convencional com aração e gradagens. O EM foi testado em seis diluições, 1:250, 1:500, 1:750, 1:1.000, 1:1.250 e 1:1.500. As aplicações do produto foram sempre sobre as folhas das plantas e em sete épocas, para todas as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Efficient microorganism; Yield.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400014

Effect of plastic mulch on growth and yield of chilli (Capsicum annuum L.)
Provedor de dados: 52
Autores: Ashrafuzzaman,M; Halim,M. Abdul; Ismail,Mohd Razi; Shahidullah,S.M; Hossain,M. Alamgir.
In this work a field study was conducted to evaluate the effect of coloured plastic mulch on growth and yield of chilli from October 2005 to April 2006. The plastic mulches were transparent, blue, and black and bare soil was the control. Different mulches generated higher soil temperature and soil moisture under mulch over the control. Transparent and blue plastic mulches encouraged weed population which were suppressed under black plastic. Plant height, number of primary branches, stem base diameter, number of leaves and yield were better for the plants on plastic. At the mature green stage, fruits had the highest vitamin-C content on the black plastic. Mulching produced the fruits with the highest chlorophyll-a, chlorophyll-b and total chlorophyll...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annum; Chilli; Growth; Plastic mulch; Yield; Yield attributes.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000200014

Evaluation of Rubber Tree Clones Under Different Tapping Systems in Northwestern Paraná State, Brazil.
Provedor de dados: 52
Autores: Pereira,Jomar da Paes; Leal,Alex Carneiro; Ramos,Andre Luiz Medeiros.
ABSTRACT This study evaluates the potential of rubber tree clones (Hevea spp.) under four tapping systems for the Northwestern region of the State of Paraná with the objective of enhance genetic diversification and increase natural rubber production in this new and promising region for rubber tree cultivation by selecting the better combination of clone and tapping system. The experiment was installed at Guanabara Farm, municipality of Paranapoema, Paraná State, in a split-plot randomized complete blocks experimental design with three replications. In the plots 12 clones were tested, namely RRIM 600 (control), IRCA 18, IRCA 111, IRCA 130, PB 235, PB 252, PB 260, PB 330, IAC 15, IAC 35, IAC 41 and RO 38. The subplot treatments consisted of four tapping...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Natural rubber; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100202

Pleurotus spp. cultivation on Brachiaria sp. straw treatment with alkaline water
Provedor de dados: 58
Autores: Iossi,Matheus Rodrigo; Cobos,Juan Diego Valenzuela; Alegria,Francisco J. Gea; Zied,Diego Cunha.
Abstract The aim of this research was to evaluate the efficiency of aqueous alkali-treated Brachiaria straw for the cultivation of appropriate species of oyster mushroom. The substrate used in the cultivation of various Pleurotus spp. was soaked for 20 min by using two different procedures: (i) 0.5–2.0% Ca(OH)2 in 100 L water, and (ii) 50–250 L water. As a result, 1% Ca(OH)2 dissolved in 100 L water and 3.5 kg of Brachiaria straw presented the best production. The most suitable species for the application of the present method were P. pulmonarius and P. sapidus. The success of this technique is directly related to the concentration of Ca(OH)2 and water, the species, and the origin and quality of raw material used as the substrate in the production of...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Brachiaria straw; Cheap treatment; Sciarid flies; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500064

Impacts of drought and temperature stress on coffee physiology and production: a review
Provedor de dados: 61
Autores: DaMatta,Fábio M.; Ramalho,José D. Cochicho.
Overall, drought and unfavourable temperatures are the major climatic limitations for coffee production. These limitations are expected to become increasingly important in several coffee growing regions due to the recognized changes in global climate, and also because coffee cultivation has spread towards marginal lands, where water shortage and unfavourable temperatures constitute major constraints to coffee yield. In this review, we examine the impacts of such limitations on the physiology, and consequently on the production of mainly Coffea arabica and C. canephora, which account for about 99 % of the world coffee bean production. The first section deals with climatic factors and the coffee plant’s requirements. The importance of controlling oxidative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea; Chilling; Frost; Heat; Photosynthesis; Water deficit; Water use; Yield.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000100006

Physiological characteristics of cassava tolerance to prolonged drought in the tropics: implications for breeding cultivars adapted to seasonally dry and semiarid environments
Provedor de dados: 61
Autores: El-Sharkawy,Mabrouk A.
The paper summarizes research conducted at International Center for Tropical Agriculture (CIAT) on responses of cassava to extended water shortages in the field aided by modern gas-exchange and water-relation techniques as well as biochemical assays. The aim of the research was to coordinate basic and applied aspects of crop physiology into a breeding strategy with a multidisciplinary approach. Several physiological characteristics/traits and mechanisms underpinning tolerance of cassava to drought were elucidated using a large number of genotypes from the CIAT core germplasm collection grown in various locations representing ecozones where cassava is cultivated. Most notable among these characteristics are the high photosynthetic capacity of cassava leaves...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agriculture; Breeding; Canopy; Carboxylation enzymes; C3-C4 intermediate; Ecophysiology; Growth; Leaf photosynthesis; Manihot sp.; PEP carboxylase; Productivity; Stomata; Water stress; Yield.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400003

Exploring drought tolerance in coffee: a physiological approach with some insights for plant breeding
Provedor de dados: 61
Autores: DaMatta,Fábio Murilo.
This paper briefly reviews some selected traits (leaf area, crown architecture, water-use efficiency and carbon isotope discrimination, water relations and root characteristics), which may be explored in breeding programmes to tolerance to drought stress in arabica and robusta coffee.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea; Water deficit; Water use; Yield.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000100001

Effect of Ethephon on Almond Bloom Delay, Yield, and Nut Quality under Warm Climate Conditions in Northwestern Mexico
Provedor de dados: 117
Autores: Grijalva-Contreras,Raúl Leonel; Martínez-Díaz,Gerardo; Macías-Duarte,Rubén; Robles-Contreras,Fabián.
World almond (Prunus dulcis (Mill.) D.A. Webb) production is mostly located in areas where flowering is injured by low temperatures, and using ethephon (2-chloroethylphosphonic acid) to delay bloom is suggested as a measure to avoid frost damage. However, it is unknown if that practice could be beneficial in Mexico’s warm climates. The objective of this study was to determine the effect of ethephon on almond bloom delay and yield. We evaluated foliar applications of ethephon at doses of 75, 150, and 300 mg L-1 at 10% leaf drop stage and at 150 mg L-1 during dormancy over 2 yr. In 2004, ethephon applied at 10% leaf drop stage delayed bloom by 7, 8, and 9 d at 75, 150, and 300 mg L-1, respectively (p &lt; 0.01), and in 2005, bloom delay was 3 d at 300 mg...
Tipo: Journal article
Palavras-chave: Frost damage; Ethephon; Yield; Nut quality.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100004

Growth, yield, and fruit quality of 'Rhode Red Valencia' and 'Valencia Late' sweet oranges grown on three rootstocks in eastern Mediterranean
Provedor de dados: 117
Autores: Yildiz,Ercan; Hakan Demirkeser,Turan; Kaplankiran,Mustafa.
The plant growth, yield, yield efficiency, and fruit quality of 'Rhode Red Valencia' and 'Valencia Late' sweet oranges (Citrus sinensis (L.) Osbeck) on three rootstocks were evaluated under Eastern Mediterranean climatic conditions of Dortyol-Hatay, which is one of the oldest and largest citrus and mandarin (Citrus reticulata Blanco) production regions in Turkey. The fruit yield was affected by rootstock in both scion cultivars from 2007 through 2010. Trees on 'Troyer' citrange had lower yield than those budded on the other rootstocks. The yield of 'Rhode Red Valencia' and 'Valencia Late' orange trees on 'Carrizo' citrange were about 9% and 19% more than those on 'Troyer' citrange, respectively. But trees on 'Troyer' citrange had significant higher yield...
Tipo: Journal article
Palavras-chave: Orange; Rootstock; Fruit quality; Plant characteristics; Yield.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200009

Integrated use of Rhizobium leguminosarum, Plant Growth Promoting Rhizobacteria and Enriched Compost for Improving Growth, Nodulation and Yield of Lentil (Lens culinaris Medik.)
Provedor de dados: 117
Autores: Iqbal,Muhammad Asif; Khalid,Muhammad; Shahzad,Sher Muhammad; Ahmad,Maqshoof; Soleman,Nawaf; Akhtar,Naeem.
Maintenance of high bacterial population in the rhizosphere improves the efficiency of these organisms. This high bacterial population can be maintained by the application of enriched compost which supports their growth and activities. Thus integrated use of Rhizobium, plant growth promoting rhizobacteria (PGPR) containing 1-aminocyclopropane-1-carboxylate deaminase (ACC-deaminase) and P-enriched compost (PEC) could be highly effective for promoting growth, nodulation, and yield of lentil (Lens culinaris Medik.). A field study was conducted to evaluate the potential of Rhizobium, PGPR containing ACC-deaminase and PEC for promoting growth of lentil. For this study, the soil type was sandy clay loam soil having pH 7.6; EC (electrical conductivity) 2.8 dS...
Tipo: Journal article
Palavras-chave: Co-inoculation; Biological N fixation; Rhizobium; ACC-deaminase; P-enriched compost; Nodulation; Yield.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100017

Bio-Economic and Qualitative Impact of Reduced Herbicide use in Direct Seeded Fine Rice Through Multipurpose Tree Water Extracts
Provedor de dados: 117
Autores: Khaliq,Abdul; Matloob,Amar; Riaz,Yasir.
Weed control program should be environmentally benign and cost-effective so that reduced herbicide use can help meet these goals. Field trials were conducted to assess the bio-economic and qualitative impact of reduced doses (25 and 50% of label dose) of a postemergence pyrimidinyloxybenzoic acid herbicide (bispyribac-sodium) applied alone or in combination with multipurpose tree (eucalyptus Eucalyptus camaldulensis Dehnh., mango Mangifera indica L., and mulberry Morus alba L.) water extracts in direct seeded rice (Oryza sativa L.) fields. The label dose of bispyribac-sodium and penoxsulam along with weed control were included for comparison. Tank mixing of multipurpose tree water extracts with reduced herbicide doses accounted for &gt; 55% suppression in...
Tipo: Journal article
Palavras-chave: Reduced dose; Weed suppression; Yield; Kernel quality; Oryza sativa.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300008

Furrow Irrigation Management and Design Criteria Using Efficiency Parameters and Simulation Models
Provedor de dados: 117
Autores: Holzapfel,Eduardo A.; Leiva,Carlos; Mariño,Miguel A.; Paredes,Jerónimo; Arumí,José L.; Billib,Max.
This study analyzes the relationship between the variables of furrow irrigation and the irrigation performance parameters, crop yield, and deep percolation as a basis for furrow irrigation design and management. Application efficiency (AE), requirement efficiency (RE), requirement distribution efficiency (RDE), total distribution efficiency (TDE), and furrow irrigation management, operation, and design variables (inflow discharge, furrow length, and irrigation cutoff time) were correlated. The relationship between performance irrigation parameters and relative yield was also examined. In addition, environmental aspects related to leaching and runoff were also presented for each of the parameters. Study results indicate that increasing the length of the...
Tipo: Journal article
Palavras-chave: Furrow; Irrigation; Performance parameters; Model; Yield; Leaching.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200012

Impact of Nursery Seeding Density, Nitrogen, and Seedling Age on Yield and Yield Attributes of Fine Rice
Provedor de dados: 117
Autores: Sarwar,Naeem; Maqsood,Muhammad; Aftab Wajid,Syed; Anwar-ul-Haq,Muhammad.
Producing vigorous seedlings and transplanting them at the appropriate age are the most important factors for obtaining high yield in rice (Oryza sativa L.) paddy production. The impact of seeding densities, N, and seedling age was evaluated in this experiment after transplanting 10, 20, 30 and 40-d old seedlings raised by using different seeding rates (high and low) and N conditions (with and without) in the 2008 and 2009 rice growing seasons. The study revealed that 10-d-old nursery seedlings, irrespective of seeding densities and fertilizer application, showed higher yields and yield attributes (productive tillers, plant height, 1000-grain weight, and straw yield), while at later stages significant interaction was observed with nursery management....
Tipo: Journal article
Palavras-chave: Rice; Nursery; Seedling age; Yield.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300001

Yield, yield features, phytochemical composition, antioxidant and antibacterial activities of Abutilon indicum cultivated under different fertilizers
Provedor de dados: 118
Autores: Yaldiz,Gulsum; Yildirim,Arzu Birinci; Arici,Yeliz Kasko; Camlica,Mahmut.
G. Yaldiz, A. B. Yildirim, Y. K. Arici, and M. Camlica. 2016. Yield, yield features, phytochemical composition, antioxidant and antibacterial activities of Abutilon indicum cultivated under different fertilizers. Cien. Inv. Agr. 43(3):464-475. Abutilon indicum (Link) Sweet is an important medicinal plant that has been used in traditional medicine for centuries, and it is one ofthe novel crops being used in the pharmaceutical industry. Agricultural practices that produce high drug yield and desired secondary metabolites are in high demand by pharmaceutical-related industries; therefore, the aim of this study was to determine the leaf and seed yield, crude oil yield, crude oil composition, total phenolic content, and the antioxidant and antibacterial...
Tipo: Journal article
Palavras-chave: Biological activity; CAN; Crude oil; Fertilizer; NPK; Yield; Aceite crudo; Actividad biológica; CAN; Fertilizante; NPK; Rendimiento.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300012

Cattle manure and N-urea in radish crop (Raphanus sativus)
Provedor de dados: 118
Autores: Mendoza Cortez,Juan W; Cecílio Filho,Arthur B; Coutinho,Edson L; Alves,Anarlete.
This work was carried out in Jaboticabal (575 m altitude, 21°15&amp;#900; 22&amp;#733; S and 48° 15&amp;#900; 58&amp;#733; W), São Paulo, Brazil, aiming to investigate the effects of cattle manure and nitrogen (urea) doses on radish height and yield. Randomized blocks were used with a 2x4x4 factorial scheme and 3 replications. The treatments were combinations of cultivars (25 and 19), cattle manure doses (0, 25, 50, and 75 t ha-1 dry basis) and N doses (0, 60, 120 and 180 kg ha-1). Increased cattle manure and urea doses provided higher plant height and commercial yield in both cultivars, but the N produced more signifcant effects than the cattle manure. The maximum commercial yield of cultivar (cv) 19 (20.34 t ha-1) was obtained using 75 t ha-1 of cattle...
Tipo: Journal article
Palavras-chave: Raphanus sativus; Fertilization; Yield.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000100004

Heterosis for yield contributing head traits in cabbage (Brassica oleracea var. capitata)
Provedor de dados: 118
Autores: Kibar,Beyhan; Karaa&amp;#287;aç,Onur; Kar,Hayati.
The present investigation was carried out to study the direction and magnitude of heterosis in twenty-four hybrids for yield contributing head traits in cabbage (Brassica oleracea var. capitata L.). A field experiment was conducted during the cabbage growing season of 2011-2012 at the Black Sea Agricultural Research Institute, Samsun, Turkey. Hybrids and parents were evaluated in a randomized block design with three replications. Measurements were performed for head weight, head diameter and head length to estimate mid parent and better parent heterosis in each hybrid. The direction and magnitude of mid parent and better parent heterosis among hybrids for all the head traits was found to be highly variable. The maximum and significant heterosis in...
Tipo: Journal article
Palavras-chave: Cabbage; Hybrid vigor; Breeding; Head traits; Yield; Yield components.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200007

Commercial cuts of Pantanal caiman meat according to sex
Provedor de dados: 65
Autores: Fernandes,Vitória Regina Takeuchi; Souza,Maria Luiza Rodrigues de; Gasparino,Eliane; Coutinho,Marcos Eduardo; Visentainer,Jesuí Vergílio; Bérgamo,Alessandro Spinola; Goes,Elenice Souza dos Reis.
ABSTRACT: This study evaluated the yield, color, and chemical composition of commercial cuts (tail, sirloin cut, back fillet, and thigh) of Pantanal caiman meat in both sexes. The yield of tail was higher than other cuts, and the yield of females (17.0%) was higher than males (15.9%). The thigh of males had lower protein content (20.8%) compared with other cuts. Females showed a higher lipid content in the tail (2.4%) and thigh (0.8%) compared with males (1.7% and 0.4%, respectively). The tail presented the greatest content of monounsaturated fatty acids (45.2%) and higher n6/n3 ratio (4.6). Although lightness was not different among cuts or between sexes, there were differences in color. Males have more yellowish meat compared with females. Thigh and back...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caiman crocodilus yacare; Yield; Chemical composition; Colorimetry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200931

Blackberry and redberry production in crop and intercrop in Pouso Alegre, southern Minas Gerais, Brazil
Provedor de dados: 65
Autores: Caproni,Csaignon Mariano; Curi,Paula Nogueira; Moura,Pedro Henrique Abreu; Pio,Rafael; Gonçalves,Emerson Dias; Pasqual,Moacir.
ABSTRACT: The cultivation of mulberry ( Rubus sp.) is highly disseminated in cold climates, but some cultivars adapt to warm weather environments. The objective of the present study was to evaluate the production of blackberry and redberry in season and off season in Pouso Alegre, south of Minas Gerais. The experimental design was a randomized block, with twelve cultivars ('Arapaho', 'Xavante', 'Brazos', 'Tupy' 'Comanche', 'Choctaw', 'Guarani', 'Caingangue', 'Cherokee', 'Chicasaw' and 'Clone' and a redberry, three blocks and an experimental unit of four plants with a spacing of 0.5x3.0m and a total density of 6,666 plants per hectare. Conventional pruning was performed to produce the crop (October-December) and for off-season production (April-July). In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubus sp.; Yield; Fruits quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001723

Genetic parameters to production characters of palm heart in half-sibs progenies of palm peach
Provedor de dados: 65
Autores: Bergo,Celso Luis; Miqueloni,Daniela Popim; Pedrozo,Cássia Ângela; Resende,Marcos Deon Vilela de.
ABSTRACT:  The peach palm (Bactris gasipaes) is a palm tree that produces palm heart originated of Amazonia with economic, social and environmental sustainability. To obtain improved cultivars it is necessary the evaluation and selection of genotypes with characteristics that support producers, manufacturing and consumers. In this context, the objective of this study was to estimate genetic parameters for palm heart production traits of peach palm considering half sibs progenies. Twenty progenies of Putumayo macrocarpa race were evaluated in seven cultivation cycles. The experiment was designed in complete randomized blocks, with 40 repetitions and one plant per plot. The genetic parameters were estimated by REML/BLUP methodology. Low genetic variability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactris gasipaes; Yield; Palm heart types.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000700202

Agronomic traits of coffee tree progenies from Timor Hybrid x Catuaí crossing
Provedor de dados: 65
Autores: Rezende,Ramiro Machado; Carvalho,Gladyston Rodrigues; Rezende,Juliana Costa de; Botelho,Cesar Elias; Pasqualloto,Allan Teixeira; Velloso,Jeanny Alice; Carvalho,Alex Mendonça de.
The objective of this work was to evaluate the agronomic traits of coffee tree progenies. The experiment was set in Ouro Verde Farm, located at Campos Altos County, MG. Twenty three coffee progenies and seven control cultivars were used. These progenies are from the fourth generation of crossing between Timor Hybrid and Catuaí. The experiment was set in a randomized block design with four replicates, a total of 120 plots with 8 plants per plot. The yield of processed coffee sacks ha-1 was evaluated in eight crop years from the 2003 to the 2011 harvests. The percentage of fruits at the cherry stage, floating fruits, coffee classification (sieve above 17), income and plant vigor were evaluated in the 2010 and in the 2011 harvests. It was concluded that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee; Yield; Breeding; Progenies.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000500003

Chia (Salvia hispanica) experiment at a 30˚ N site in Sichuan Basin, China
Provedor de dados: 65
Autores: Win,Aung Naing; Xue,Yufei; Chen,Baojun; Liao,Feifei; Chen,Fang; Yin,Nengwen; Mei,Fanrong; Wang,Bitao; Shi,Xiaofeng; He,Yumeng; Chai,Yourong.
ABSTRACT:  The mysterious ancient Mesoamerican Indian crop chia (Salvia hispanica) is revived and expanding worldwide due to its richness of valuable nutraceuticals such as α-linolenic acid (ALA), antioxidants, food fiber, gels, and proteins. We carried out a pilot experiment on chia planting in non-frost Sichuan Basin, at Hechuan Base (30˚0′ 43″ N, 106˚7′ 41″ E, 216 m), Southwest University, Chongqing, China. The split-plot trial contained two factors, 3 spring-summer sowing times as main plots, and 6 densities as subplots, with 3 replicates. Phenological, botanical, adversity, yield, and seed quality traits were investigated. Plants were very tall, suffered from lodging, and flowered in mid-October. Sichuan Basin can be considered as a north edge for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chia (Salvia hispanica); Field trial; Chongqing; Yield; Α-linolenic acid (ALA).
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900401

Yield analysis of Physalis ixocarpa Brot. ex Hornem varieties under greenhouse and field conditions
Provedor de dados: 65
Autores: Ramos-López,Bernabé Ignacio; Ortiz-Hernández,Yolanda Donaji; Morales,Isidro.
ABSTRACT: Physalis ixocarpa (husk tomato) is traditionally cultivated in Mexico, and nowadays the yield is low. In this study, four cultivars of husk tomato were evaluated, under greenhouse and field conditions. It was carried out a split-plot experimental design in a 4x2 factorial arrangement. The large plot was the growth conditions and the small plot was the variety. The microclimate, soil and yield variables were recorded. In the field, the Integrated Photosynthetic Active Radiation (IPAR) was higher 12mol m-2 d-1 than in the greenhouse. The average temperature was slightly higher 1.18°C in the greenhouse and the average relative humidity was slightly higher 0.89% in the field. Plants grown in the greenhouse had lower negative values for the matric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horticulture; Husk tomato; Intensive production; Solanaceae; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100401

Effects of shading on the growth, development and yield of winged bean (Psophocarpus tetragonolobus)
Provedor de dados: 65
Autores: Raai,Murthazar Naim; Zain,Nurul Amalina Mohd; Osman,Normaniza; Rejab,Nur Ardiyana; Sahruzaini,Nurul Amylia; Cheng,Acga.
ABSTRACT: An experiment was conducted to investigate the effects of different shading regimes [i.e., 60% (heavy), 30% (moderate), and 0% (control)] on 25 traits associated with the morphological features, photosynthetic gas exchange and agronomic characteristics of winged bean (Psophocarpus tetragonolobus), an underutilized protein-rich legume from the tropics. Collectively, 80% of the studied variables displayed significant differences (P&lt;0.05) between at least two shade treatments. Shading generally showed most pronounced effect on the physiological traits of the legume, whereby the stomatal conductance, photosynthetic and transpiration rate differed significantly among plants for all treatments. The non-shaded plants were observed to have superior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphology; Physiology; Shading; Winged bean; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200202

Cropping systems on root rot and soybean seed yield
Provedor de dados: 65
Autores: Maier,Maira; Souza,Clovis Arruda; Casa,Ricardo Trezzi.
ABSTRACT:  Root rot (RR), which can occur in different cropping systems, affects soybean seed yield. The aim of this study was to determine the incidence of RR in soybean crop systems and its relationship with soybean yield. The study was carried out for two growing seasons in a no-till system consisting of four soybean crop systems: soybean-oat+soybean-oat, soybean-maize+soybean-maize, soybean-wheat+soybean-wheat and soybean-pasture+soybean-pasture. Data were submitted to Pearson’s correlation. Incidence of RR, mainly charcoal rot and sudden death, was more than 50% in soybean roots for all the soybean crop systems and consequently decreased yield by around 22kg ha-1 of seed for every 1% increase in RR. Root rot led to a decline in seed yield from 20 to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Root diseases; Yield; Root healty; Macrophomina; Fusarium.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700204

Selection of plum cultivars for subtropical regions
Provedor de dados: 65
Autores: Pio,Rafael; Farias,Daniela da Hora; Bianchini,Flávio Gabriel; Peche,Pedro Maranha; Bisi,Rayane Barcelos.
ABSTRACT:  Plum growing is widespread in temperate zones. In Brazil, the exploitation of this fruit tree is extended from the colder regions of the state of Rio Grande do Sul to the south of the state of Minas Gerais. However, cultivars exploited at subtropical regions are scarce due to competition. The present study aimed to select productive cultivars of plums adapted to Brazilian subtropical conditions. In this respect, the plum cultivars ‘Fla 87-7’, ‘Gema de Ouro’, ‘Grancoure’, ‘Harry Pickstone’, ‘Januária’, ‘Santa Rosa’ and ‘Satsuma’ were grafted on the ‘Okinawa’ rootstock ‘and evaluated by two cycles in the municipality of Lavras, MG, Brazil. The phenological development, physical and chemical properties of fruits, average number of fruits per plant,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus salicina; Phenology; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100201

Organic polyculture of passion fruit, pineapple, corn and cassava: the influence of green manure and distance between espaliers
Provedor de dados: 64
Autores: Araújo Neto,Sebastião Elviro de; Campos,Pedro Arruda; Tavella,Leonardo Barreto; Solino,Antônio Jussier da Silva; Silva,Irene Ferro da.
The organic fruit crop should incorporate the principles of sustainable agriculture, with a guarantee of productivity coupled with ecological diversity, using techniques of policultive with regional species. The aim of the study was to evaluate the effect of the green manure crops [Canavalia ensiformis (jack beans), Crotalaria spectabilis (sunn hemp), Pueraria phaseoloides (tropical kudzu), Arachis pintoi (peanut forage) and spontaneous plants] and distance between espaliers on the yields of Passiflora edulis f. flavicarpa (passion fruit), Ananas comosus (pineapple), Zea mays (maize), Manihot esculenta (cassava) and biomass in organic polyculture in the state of Acre, Brazil. The randomized block design experiment comprised plots encompassing the space...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic intercropping; Cover crop; Yield; Land-use efficiency.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000300004

Planting time for maximization of yield of vinegar plant calyx (Hibiscus sabdariffa L.)
Provedor de dados: 64
Autores: Castro,Nilmar Eduardo Arbex de; Pinto,José Eduardo Brasil Pereira; Cardoso,Maria das Graças; Morais,Augusto Ramalho de; Bertolucci,Suzan Kelly V.; Silva,Fabiano Guimarães da; Delú Filho,Nelson.
The objective of this work was to evaluate the yield of calyxes of Hibiscus sabdariffa L, a medicinal plant, at four planting times in Lavras - MG. The treatments were four planting times (October 18th, November 15th, December 18th 2001 and January 15th 2002) and a harvest was proceeded when practically there were no developing calyxes, almost at the end of the plant cycle. The numbers of calyxes per plant, the fresh and dry biomasses of calyxes and quality were taken into account. It follows that planting time influenced yield per plant and the fresh and dry biomasses of calyxes, differing from each other by Tukey test at 5%. In October planting, there was a higher yield (2,522kg/ha) with a yield 5.24 as high relative to the planting of the month of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic farming; Calyx; Medicinal plant; Yield; Vinegar plant.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000300009

PERFORMANCE OF YIELD AND YIELD CONTRIBUTING CHARACTERISTICS OF BC2F3 POPULATION WITH ADDITION OF BLAST RESISTANT GENE
Provedor de dados: 64
Autores: Hasan,Muhammad Mahmudul; Yusop,Mohd Rafii; Ismail,Mohd Razi; Mahmood,Maziah; Rahim,Harun Abdul; Latif,Mohammad Abdul.
ABSTRACTThe study was carried out in the University Putra Malaysia (UPM) Rice Research Centre to evaluate the yield performance of newly developed selected blast resistant plants of BC2F3 generations derived from a cross between MR263, a high yielding rice variety but blast susceptible and Pongsu Seribu 1, donor with blast resistant (Pi-7(t)and Pi-d (t)1, Pir2-3(t)genes and qLN2 QTL), Malaysian local variety. On the basis of assessed traits, the plants 12, 6, 7, 5, 21, 22, 5, 26, 11, 8, 10, 13 and 15 had the higher yield, blast resistant and good morphological traits. More than 70% heritability was found in days to maturity, plant height, tiller numbers per hill, and panicle per hill, 80% heritability was found in filled grain and yield per hill and more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yield; Rice; Fungi resistance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000500463

Rootstocks for the new seedless table grape ‘BRS Vitória’ under tropical semi-arid conditions of São Francisco Valley
Provedor de dados: 64
Autores: Leão,Patrícia Coelho de Souza; Nascimento,José Henrique Bernardino do; Moraes,Dayane Silva de; Souza,Edimara Ribeiro de.
ABSTRACT ‘BRS Vitoria’ is the most important Brazilian table grape cultivar in the domestic and foreign markets, standing out for the seedleness, pleasant flavor, high yield and mildew resistance. The aim of the present study was to determine the effect of the rootstock on the yield, production components, vigor, and physical and chemical characteristics of the ‘BRS Vitória’ grape under irrigation in the Brazilian semi-arid region. The experiment was conducted over eight consecutive production cycles in the period from 2015 to 2018 in a commercial area in the Senador Nilo Coelho project, Petrolina, PE. The treatments were represented by seven rootstocks: ‘IAC 572’, ‘IAC 766’, ‘IAC 313’, ‘Harmony’, ‘SO4’, ‘Paulsen 1103’, and ‘Freedom’, using a randomized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropical viticulture; Seedless grapes; Yield; Vitis sp.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100200

MICROENCAPSULATION OF TURMERIC OLEORESIN IN BINARY AND TERNARY BLENDS OF GUM ARABIC, MALTODEXTRIN AND MODIFIED STARCH
Provedor de dados: 64
Autores: Cano-Higuita,Diana Maria; Vélez,Harvey Alexander Villa; Telis,Vania Regina Nicoletti.
Spray-drying is a suitable method to obtain microencapsulated active substances in the powdered form, resulting in powders with improved protection against environmental factors as well as with higher solubility in water, as in the case of turmeric oleoresin. The present study investigated the spray-drying process of turmeric oleoresin microencapsulated with binary and ternary mixtures of different wall materials: gum Arabic, maltodextrin, and modified corn starch. A statistical simplex centroid experimental design was used considering the encapsulation efficiency, curcumin retention, process yield, water content, solubility, and particle morphology as the analyzed responses. Wall matrices containing higher proportions of modified starch and gum Arabic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray drying; Drying aids; Encapsulation efficiency; Yield; Curcumin.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000200173

Digestible lysine for broiler chickens with lower genetic potential grown on free-range system
Provedor de dados: 64
Autores: Nascimento,Eduardo Souza do; Lima,Cristina Amorim Ribeiro de; Brasil,Ronner Joaquim Mendonça; Machado,Noédson de Jesus Beltrão; Sousa,Felipe Dilelis de Resende; Corrêa,Gerusa da Silva Salles.
ABSTRACT Determining the actual lysine requirement is crucial as it is an essential amino acid and plays animportant role in the metabolism of broilers. In addition, it is the second limiting amino acid for broilers fed with rations formulated basedon corn and soybean meal. The aim of this study was to determine the digestible lysine requirement for male broilers with lower genetic potential for growth in a semi-confined system as well as to evaluate the effects of different values of digestible lysine on performance and carcass characteristics. A total of 300 broiler chickensfrom a commercial lineage EMBRAPA 041 were used with an average initial weight of 987 g. The broilers were distributed into 20 experimental units in a completely randomized design...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Nutritional requirements; Performance; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000400454