Consulta: subjectFacets:"Fertilization"
Registros recuperados: 201
Data/hora: 11/06/2024 01:26:42

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

FEIJOEIRO COMUM IRRIGADO SUBMETIDO Á DIFERENTES DOSES DE MANGANÊS E ÉPOCAS DE APLICAÇÃO
Provedor de dados: 196
Autores: Rodrigues, Mateus Gonçalves; Ramos, Eliene Wellita Vieira Barcelos; Buso, Wilian Henrique Diniz.
Brazil is the largest beans producer, and this legume is one of the primary sources of plant-based proteins. Some minerals, such asmanganese, are essential for this crop development. From the socio-economic importance of the beans crop, this study aims to evaluate theagronomic performance of irrigated common beans grown under different doses of manganese on two application periods. The experiment was conducted in the experimental area of the Instituto Federal Goiano, Campus Ceres (GO), adopting an experimental design arranged in a 2x4 factorial scheme with four replications, comprising two periods of application (V4 and R5 phenological stages) and four Mn doses (0, 150, 300, 450 g ha-1). The variables evaluated were plant height (m), number of pods per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Agronomic Parameters; Grain Yield; Adubação; Parâmetros Agronômicos; Produtividade.
Ano: 2021
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6018

Fertilización con NPK en huertos de litchi (Litchi chinensis Sonn) en la región norte de Oaxaca.
Provedor de dados: 32
Autores: Maldonado Peralta, Ramiro.
El Litchi (Litchi chinensis Sonn.) es una especie que durante el periodo de floración a maduración existen varios factores que afectan el rendimiento de la fruta, siendo la nutrición uno de los principales. El objetivo fue evaluar el estado nutrimental y la respuesta a la aplicación de NPK en el cultivo litchi en las variedades “Brewster” y “Mauritius” en la región norte de Oaxaca durante 2009 y 2011. Para desarrollar el trabajo se utilizo un diseño completamente al azar con nueve tratamientos con diferentes concentraciones de NPK (0, 25, 50, 75, 100 y 125% de la fórmula 50-130-50 de N, P2O5 y K2O kg ha-1, respectivamente (100%). Con esta fórmula base se calcularon los demás tratamientos. Se adicionaron tres tratamientos, 100% más compost, 100% más...
Palavras-chave: Fertilización; Brotes; Rendimiento; Floración; Área foliar; SPAD; Fertilization; Fruit and shoot yield; Leaf area; Flowering; Edafología; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/591

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

Crecimiento del cedro (Cedrela adorata L.) en etapa juvenil bajo riego, fertilización y aplicación de insecticida y su relación con la incidencia de Hypsipyla grandella Z
Provedor de dados: 32
Autores: Castillo Domínguez, Ernesto.
En el estado de Tabasco, localizado en el trópico de México, se tienen plantadas alrededor de 7,000 ha de cedro (Cedrela odorata L), como  una respuesta a los procesos de deforestación de la región y como una forma de suplir las necesidades de materia prima de la industria de la madera. La presente investigación tuvo como objetivo evaluar el crecimiento del cedro en etapa juvenil bajo riego, fertilización y aplicación de insecticida y su relación con la incidencia de Hypsipyla grandella Zeller. El estudio se desarrolló de abril a de septiembre de 2008 en una plantación de cedro de 10 meses de edad plantada en marco real de 3x3 m, con una densidad de 1100 plantas/ha, localizada en el municipio de Cárdenas, Tabasco (18°01´N, 93°03´ W). Las variables...
Tipo: Tesis
Palavras-chave: Cedrela odorata; Irrigación; Fertilización; Insecticida; Crecimiento; Maestría; Producción Agroalimentaria en el Trópico; Irrigation; Fertilization; Insecticide; Growth.
Ano: 2008
URL: http://hdl.handle.net/10521/1569

Fertilización orgánica y mineral del zapote mamey [Pouteria sapota (Jacq.) H. Moore &amp; Stearn]
Provedor de dados: 32
Autores: Jiménez Fernández, Gerardo.
El objetivo de la investigación consistió en estudiar las características físicas y químicas  del suelo cultivado con mamey [Pouteria sapota (Jacq.) H. Moore and Stearn], se  evaluaron cinco tratamientos: vermicomposta 6.6 kg árbol-1, gallinaza 5 kg árbol-1,  fertilizante químico (sulfato de amonio 1 kg árbol-1, superfosfato de calcio triple 750 g  árbol-1, sulfato de potasio 400 g árbol-1), Azufre 4 kg árbol-1 y el testigo. Se hicieron  cinco aplicaciones con cuatro repeticiones por tratamiento. Se determinó el estado  nutrimental de los árboles, mediante el análisis foliar, extracción de macro y  micronutrimentos por los frutos y se estudió la distribución radical. El experimento se  llevó a cabo en Alpoyeca, Guerrero, en árboles de 16 años. Los...
Tipo: Tesis
Palavras-chave: Sapotácea; Fertilización; Nutrición; Abonos orgánicos; Maestría; Fruticultura; Fertilization; Nutrition; Organic fertilizers.
Ano: 2007
URL: http://hdl.handle.net/10521/1435

Calidad física y fisiológica en la semilla e industrial en el grano de Amaranthus hypochondriacus en la fertilización y densidad de población.
Provedor de dados: 32
Autores: Ramírez Vázquez, Ma. de la Luz.
La calidad de la semilla es una característica de fundamental jerarquía en la producción de cualquier cultivo: dado que hay una amplia influencia en la fertilización y densidad de población sobre el rendimiento, principalmente y respecto a la necesidad que existe en la actualidad sobre el manejo de la calidad de semilla y grano por los productores en nuevas variedades y de conocer cómo está puede ser modificada mediante prácticas agronómicas definidas que permitan mejorar el proceso industrial (reventado) e identificar la respuesta de estas variedades a la aportación de fertilización y densidades de población, así como encontrar las variables que permitan obtener un mayor incremento en el rendimiento y calidad de semilla y grano sé platearon los siguientes...
Palavras-chave: Amaranthus hypochondriacus L.; Fertilización; Densidad de población; Revancha; Gabriela; DGETA; Population density; Fertilization; Doctorado; Producción de Semillas.
Ano: 2010
URL: http://hdl.handle.net/10521/283

Respuesta del manzano 'agua nueva' a distintas dosis de NPK bajo el sistema de cultivos intercalados.
Provedor de dados: 32
Autores: Salvador Martínez, Telésforo.
En los sistemas agrícolas, el suministro adecuado de nutrientes a cada especie vegetal que lo componen, es uno de los factores que define su productividad. Con el objetivo de evaluar el efecto del nitrógeno (N), fósforo (P) y potasio (K) en el crecimiento vegetativo, rendimiento y calidad de fruto del manzano ʽAgua Nueva’/M106/manzano criollo de Huejotzingo, Puebla, bajo el sistema de cultivos intercalados, se estudiaron cinco niveles de cada uno. El experimento de milpa (maíz y frijol) intercalada con árboles de manzano, inició en el año 2002 en el Campo Experimental Valle de México (CEVAMEX) del INIFAP. El presente trabajo incluyó solamente los años 2010 y 2011. Dosis intermedias de N y P y baja de K (100-40-64 g de N, P2O5 y K2O por árbol por año)...
Palavras-chave: Fertilización; Manzano; Crecimiento vegetativo; Rendimiento y calidad de fruto; Cultivos intercalados; Fertilization; Apple; Vegetative growth; Yield and fruit quality; Crop intercropping; Fruticultura; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2047

Indicadores morfológicos y fisiológicos en Abies religiosa y su capacidad predictiva del desempeño en campo.
Provedor de dados: 32
Autores: Navarro Sandoval, José Luis.
El tamaño y las características morfológicas de la planta son factores importantes para lograr un buen desempeño en las plantaciones de restauración ecológica; las prácticas de cultivo en vivero que promueven el crecimiento radical y un adecuado nivel nutrimental para mejorar el desempeño de la planta en campo son indispensables en este proceso. Con el propósito de evaluar el efecto de la fertilización, el daño por heladas y la categoría diamétrica en el crecimiento, la morfología, la asignación de biomasa y el estado nutrimental en vivero, y su relación con la supervivencia y crecimiento de las plantas en dos ambientes de plantación (S1 y S2), se estableció un experimento con cuatro niveles de fertilización (T-50, TBase, T+50 y T+100), dos condiciones del...
Palavras-chave: Fertilización; Biomasa; Morfología; Tolerancia a la deshidratación; Supervivencia; Crecimiento; Fertilization; Biomass; Seedling morphology; Dehydration tolerance; Survival; Growth; Forestal; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2103

Maduración y frigoconservación de frutos de mango 'Tommy Atkins' con diferentes dósis de fertilización.
Provedor de dados: 32
Autores: Alvarado Cepeda, Yessica Abigail.
El mango (Mangífera indica L.) es una de las frutas más consumidas en el mundo. Durante el periodo 2000-2010 México aumentó su producción en 73 300 toneladas aumentando las exportaciones en un 25 %. En la investigación se utilizaron frutos de mango ‘Tommy Atkins’ procedentes de San Blas, Nayarit, tratados con dos tratamientos de fertilización y un testigo (sin fertilización), los cuales se dividieron en tres lotes para su evaluación siendo: 1)Condiciones de maduración directa (22° C ± 2°C y 50±5 % HR) 2)Almacenados en refrigeración (11°C ±1°C, HR 95%) durante 7 días y 3) Almacenados en refrigeración durante 14 días. Los cuales después de la salida de refrigeración fueron madurados a temperatura ambiente (22° C ± 2°C y 50±5 % HR). Se estudió la influencia...
Palavras-chave: Fertilización; Calidad postcosecha; Maduración; Refrigeración; Fertilization; Potharvest quality; Maduration; Refrigeration; Fruticultura; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/1959

Fertilización NPK y demanda nutrimental de cuatro especies forestales en fases temprana de crecimiento
Provedor de dados: 32
Autores: Pérez Camacho, Pedro.
A nivel mundial las plantaciones forestales han crecido significativamente. Según la  Organización de las Naciones Unidas para la Agricultura y Alimentación (FAO, 2002) el total de  plantaciones forestales en el mundo aumentó de 17.8 millones de hectáreas en 1980, a 43.6  millones en 1990 y alcanzó187 millones en 2000. El 62% de las plantaciones silvícolas del  mundo se encuentran en Asia.  A pesar de su importancia económica y ecológica, no existe información cuantitativa sobre el  crecimiento y desarrollo de las especies nativas de clima cálido en México; dicha información  constituye una herramienta básica para la planeación y manejo de las plantaciones forestales  (Gómez et al., 2006).  México es un país que, debido a su ubicación geográfica, posee los...
Tipo: Tesis
Palavras-chave: Demanda nutrimental; Crecimiento de cedro; Crecimiento de caoba; Fertilización; Suelos de sabana; Maestría; Producción Agroalimentaria en el Trópico; Nutrirional demand; Fertilization; Mexican cedar growth; Mahogany growth; Savanna soils.
Ano: 2009
URL: http://hdl.handle.net/10521/1287

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

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

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

Casuarina equisetifolia fitorremeciación de suelo contaminado con diesel y aplicación de bioestimulación y bioaumentación.
Provedor de dados: 32
Autores: Díaz Martínez, María Esther.
En este trabajo se evaluó la germinación de semillas y el crecimiento de plantas de C. equisetifolia L. ante diesel, y su potencial de fitorremediación en combinación de bioaumentación y bioestimulación. La primera fase experimental evaluó el efecto tóxico de 15 dosis de diesel (0, 100, 250, 500, 800, 1000, 1500, 2000, 2500, 3000, 5000, 7500, 10000, 15000 y 20000 mg kg-1) en la germinación de semillas y la emergencia de plántulas. A los 10 días, la germinación fue mayor en concentraciones altas de diesel; la mayor geminación ocurrió en 20000 mg kg-1, y la menor se registró ante 5000 mg kg-1. La emergencia de plántulas fue mayor en las concentraciones menores a 5000 mg kg-1. A los 15 días, el crecimiento de las plántulas disminuyó ante concentraciones...
Palavras-chave: Germinación; Emergencia de plantas; Simbiosis; Fertilización; Microorganismos; Degradación de hidrocarburos; Seed germination; Seedling emergence; Symbiosis; Fertilization; Microorganisms; Hydrocarbon degradation; Maestría; Edafología.
Ano: 2012
URL: http://hdl.handle.net/10521/730

CHANGES IN SOIL CHEMICAL PROPERTIES PROMOTED BY FERTIGATION WITH TREATED SANITARY WASTEWATER
Provedor de dados: 70
Autores: Santos,Silvânio R.; Ribeiro,Danilo P.; Matos,Antonio T.; Kondo,Marcos K.; Araújo,Edcássio D.
ABSTRACT We evaluate the application of treated sanitary wastewater (TSW) to provide potassium for crops and reduce demand for fresh water and mineral nutrients. The field experiment was arranged in randomized block design with four replications and five treatments: 50, 100, 150 and 200% of potassium requirements and a control with conventional fertilizer. The TSW was applied to maize (November 2012 to February 2013), cotton (June to November 2013) and bean (April to June 2014). After bean, soil chemical properties were evaluated until 0.8 m depth. Fertigation with TSW to potassium fertilization provided about 50% of water, nitrogen and phosphorus to the bean. The soil nutrient availability and soil organic matter did not increase, whereas sodium had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Fertilization; Irrigation; Sewage; Sodium.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200343

Watermelon fertigation with electrical conductivity and ph monitoring in the soil solution
Provedor de dados: 70
Autores: DA SILVA JÚNIOR,MANOEL J.; VIANA,PAULA C.; MEDEIROS,JOSÉ F. DE; LIMA,JOÃO G. A.; TARGINO,ANA J. DE O.
ABSTRACT In the olericulture, in general, is practiced intensive fertilization, which creates a risk of salinization and change of high pH, ​​which if not well monitored can cause production losses, excessive spending on fertilizers and environmental contamination. We developed this study with the aim of controlling fertigation on watermelon through the behavior of the electrical conductivity (EC) and pH in the soil solution obtained through porous ceramic cups extractors. The EC and pH values ​​were corrected by the current soil moisture for the moisture field capacity, due to different moisture values ​​at the time of extraction. The monitoring comprised 19 assessments during 80 days of cultivation. We can control the pH and EC of the soil and maintain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrullus lanatus; Fertilization; Solution extractors; Salinity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000400622

Soil analysis as a fator of technical and economic sustainability in the production of maize for silage
Provedor de dados: 194
Autores: Silva, Antonio Waldimir Leopoldino da; Roieski, Patrick Iury.
Corn silage is a roughage widely used to fill the food deficit caused by the seasonality of forage supply. In addition to being a demanding crop in soil fertility, the harvest exports all the material, increasing the extraction of nutrients. The objective of this study was to technically evaluate the fertilization used in agricultural production units (APUs) that do not carry out soil analysis (SA) prior to cultivation and to estimate the possible financial return of a properly oriented fertilization. The sample consisted of 36 APUs that adopt the non-tillage system, located in nine municipalities in Western Region of Santa Catarina State, Brazil. Before the implantation of the crop, soil sampling was carried out, but the resulting SAs were not used to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adubação; Ensilagem; Fertilidade do solo; Ensilage; Fertilization; Soil fertility.
Ano: 2022
URL: http://periodicos.ufsm.br/extensaorural/article/view/44173

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

Nitrogen concentration in dry matter of the fifth leaf during growth of greenhouse tomato plants
Provedor de dados: 75
Autores: Rattin,Jorge E.; Andriolo,Jerônimo L.; Witter,Márcio.
The nitrogen concentration in dry matter of the fifth leaf during growth of a greenhouse tomato crop was determined. Plants of hybrid Monte Carlo were grown in 4.5 L bags, using a commercial substrate, in a plant density of 3.3 plants m-2. A nutrient solution containing, in mmol L-1: KNO3, 4.0; K2SO4, 0.9; Ca(NO3)2, 3.75; KH2PO4, 1.5; MgSO4, 1.0; iron chelate 19. 10³, was used as reference. Microelements were added by a commercial mixture. The T3 treatment was equal to the reference nutrient solution, whereas in treatments T1, T2, T4 and T5 quantities of all nutrients from T3 were multiplied by 0.25, 0.50, 1.25 and 1.50, respectively. In each treatment, the volume of 1 L of nutrient solution was supplied to each plant once a week by fertigation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum; Nutrients; Mineral nutrition; Fertilization.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362002000400023

Nitrogen and phosphate fertilizer on green corn grown in succession to the melon crop
Provedor de dados: 75
Autores: Souza Filho,Antonio L; Oliveira,Fábio HT; Preston,Welka; Silva,Gerônimo F; Carvalho,Simplício L.
ABSTRACT Melon producers, in Chapada do Apodi, Rio Grande do Norte State, Brazil, located between the states of Ceará and Rio Grande do Norte, have cultivated corn in succession to the melon crop. However, this crop rotation is not yet evaluated on the extent to which the residual effect of nitrogen and phosphate fertilization carried out in melon can supply partially or completely the corn demands of nitrogen and phosphorus. This work aimed to evaluate the effect of nitrogen (N) and phosphorus (P) in the production of corn in succession to the cultivation of melon (Cucumis melo) irrigated in an Alkaline Inceptisol of Chapada do Apodi. Ten treatments from the combinations between five N rates (0; 45; 90; 160 and 220 kg/ha) and four levels of P2O5 (0; 40;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Zea mays; Continuous cultivation; Fertilization; Residual effect.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000300392

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

New national potato genotypes: yield response to different doses of 4-14-8 NPK fertilizer
Provedor de dados: 75
Autores: Santos,Keli Cristina; Kawakami,Jackson; Genú,Aline M; Passos,Sara; Eschemback,Vlandiney.
ABSTRACT The fertilization of potato crops generally does not take into account the genotype, although genotypes may respond differently to fertilization. This study aimed to determine the yield of new potato genotypes (cultivar BRS Camila and clone CL 02-05), as well as the cultivar Ágata, submitted to four NPK 4-14-8 fertilizer doses (0, 2, 4 and 6 t ha-1) in the crop seasons of 2013/14 and 2014/15. We evaluated the total and marketable tuber yield, total and marketable tuber number, percentage of marketable tuber dry weight, average marketable tuber weight and plant growth period. The experimental design was randomized blocks in split plot scheme, with fertilizer doses allocated as main plots and genotypes as subplots, with three replications. We did...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Clone; Cultivar; Fertilization; Productivity; Variety.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100106

Accumulation of macronutrients in beetroot plant
Provedor de dados: 75
Autores: Cardoso,Antonio II; Magro,Felipe O; Oliveira Júnior,Manoel X; Abrahão,Camila; Tavares,Ana EB; Fernandes,Dirceu M.
Abstract Nutrient need in each development stage of plant is showed by nutrient accumulation curve; this is an important tool for fertilization recommendation. However, researches on vegetables with the objective to estimate these curves are scarce, mainly in the modern hybrids that show higher productivity potential and, probably, higher nutrient demand. In this study, the authors aimed to determine macronutrient accumulation of beetroot plants, hybrid Boro. The experiment was carried out in São Manuel, São Paulo State, Brazil. Five treatments {seasons of plant collection: 0, 14, 28, 43 and 60 days after transplanting (DAT)}, considering that in each season 16 plants were collected (four replications of four plants each, in a randomized block design). We...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta vulgaris; Fertilization; Nutrients absorption; Nutritional demand.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000300328

Nitrogen on growth and yield of lettuce plants grown under root confinement
Provedor de dados: 75
Autores: Cardoso,Francieli L; Andriolo,Jerônimo L; Picio,Miriane Dal; Piccin,Marcieli; Souza,Jéssica M.
ABSTRACT: The objective of this research was to test the hypothesis that when lettuce plants grow under root confinement, development and yield is reduced and that such negative effects may be compensated by increasing nitrogen availability in the rooting media. The experiment was conducted between August 11st and September 23rd 2011. Lettuce transplants, cultivar Stella, bearing five leaves, were planted in pots using sand as substrate. Treatments were three root confinement levels and five N concentrations in the nutrient solution, in a 3x5 factorial randomized experimental design with four replications. Root confinements were simulated by pot sizes of 2.5 dm³ (no confinement, the control); 1.0 dm³ (moderate) and 0.4 dm³ (severe). Nitrogen concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Fertilization; Horticulture; Mineral nutrition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400422

Nutrient enrichment effect on macroinvertebrates in a lowland stream of Argentina
Provedor de dados: 76
Autores: Cortelezzi,Agustina; Ocón,Carolina; Oosterom,María V. López van; Cepeda,Rosana; Capítulo,Alberto Rodrigues.
ABSTRACT One of the most important effects derived from the intensive land use is the increase of nutrient concentration in the aquatic systems due to superficial drainage. Besides, the increment of precipitations in South America connected to the global climate change could intensify these anthropic impacts due to the changes in the runoff pattern and a greater discharge of water in the streams and rivers. The pampean streams are singular environments with high natural nutrient concentrations which could be increased even more if the predictions of global climate change for the area are met. In this context, the effect of experimental nutrient addition on macroinvertebrates in a lowland stream is studied. Samplings were carried out from March 2007 to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phosphorus; Nitrogen; Fertilization; Invertebrate abundance; Climate change.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000200228

New histochemical and morphological findings in the female genital tract of Boophilus microplus (Acari, Ixodidae): an attempt toward the elucidation of fertilization in ticks
Provedor de dados: 76
Autores: García-Fernández,Casimiro; Garcia,Sonia M. Lauer; Garcia,Rosane Nunes; Valente,Vera L. da Silva.
At present not only is the site of fertilization in ticks still unknown but it is also unclear as to how this mystery can be solved. Signs of fertilization can be observed throughout the female genital tract and these can be clues for the elucidation of the unsolved questions relating to ticks fertilization. In Boophilus microplus (Canestrini, 1887) the most important signs are the following: the final eversion of the acrosomal canal in females ready for oviposition; the presence of small tubules, resembling the subplasmalemal process of the spermatozoon between the oviduct cells; budding nuclei throughout the female genital tract; and the two Feulgen and DAPI positive areas in the oocyte at vitelogenesis. These morphological characteristics suggest that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acari; Ticks; Female reproductive system; Fertilization.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000300009

Influência do manejo da irrigação e da fertirrigação nitrogenada na produtividade e qualidade do maracujá-doce (2007).
Provedor de dados: 14
Autores: FIGUEREDO, S. F.; AZEVEDO, J. A. de; ANDRADE, L. M.; JUNQUEIRA, N. T. V.; ANDRADE, L. R. M. de; CHAIB FILHO, H.
bitstream/item/78939/1/p2007-18.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Passion fruit; Fertilization; Productivity.; Irrigação; Maracujá.; Fruit quality; Irrigation; Water management.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570319

Resposta de cultivares de soja à adubação,em solo de alta fertilidade, no sistema plantio direto.
Provedor de dados: 14
Autores: SALTON, J. C.; HERNANI, L. C.
bitstream/item/39435/1/Cot20-97.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Soybean; Fertilization; Direct sowing.; Adubação; Cerrado; Glycine Max; Plantio Direto; Solo.; Soja; Soil.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/240756

Crescimento e nutrição mineral de mudas de mangostão (Garcinia mangostana L.) micorrizadas ou não, em substrato com ou sem matéria orgânica.
Provedor de dados: 14
Autores: CHU, E. Y; SILVA, O. F.
bitstream/item/32688/1/CPATU-BP136.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Adubação mineral; Mangosteem; Seed; Fertilization; Inoculation; Growth.; Crescimento; Inoculação; Garcinia Mangostana; Mangostão; Matéria Orgânica; Muda.; Micorriza; Mycorrhizae; Organic matter.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382769

Recomendacoes da Comissao Centro-Sul Brasileira de Pesquisa de Trigo para 1992.
Provedor de dados: 14
Autores: REUNIAO DA COMISSAO CENTRO-SUL BRASILEIRA DE PESQUISA DE TRIGO, 8., 1992, Londrina.
Recomendacoes de calagem e adubacao; Recomendacoes de cultivares; Zoneamento e epocas de semeadura; Praticas culturais; Recomendacoes para controle das doencas.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cultivar; Congresso; Brasil; Regiao sul; Variety; Disease; Cultural practice; Fertilization; Congress; South region.; Doença; Pesquisa; Pratica Cultural; Trigo.; Brazil; Crop management; Liming; Research; Sowing date; Wheat.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/450536

Recomendacoes preliminares para a formacao de pastagens de capim Andropogon.
Provedor de dados: 14
Autores: ANDRADE, R. P. de; SANZONOWICZ, C.; GOMES, D. T.; ROCHA, C. M. C. da; COUTO, W.; THOMAS, D.; MOORE, C. P.
bitstream/item/105850/1/comtec-11.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Fertilização; Fertilization; Formação; Formation; Gramineous; Grass; Preparo; Seed.; Andropogon Gayanus; Calagem; Capim Andropogon; Cerrado; Gramínea; Gramínea Forrageira; Pastagem; Planta Forrageira; Semeadura; Semente; Solo.; Pastures; Soil.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549318

Influência do esterco no crescimento e no acúmulo de nutrientes em mudas de mamão havaí.
Provedor de dados: 14
Autores: MULLER, C. H.; REIS, G. G. dos; MULLER, A. A.
bitstream/item/59119/1/CPATU-ComTec30.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Mamão havaí; Desenvolvimento; Papaya; Fertilization; Fruit; Development; Cultting; Nutrient; Manure.; Adubação; Carica Papaya; Esterco; Fruta; Muda; Nutriente.
Ano: 1979
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376115

Respostas de forrageiras a calcario e adubacao em podzois hidromorficos nas sub-regioes da Nhecolandia e dos Paiaguas Pantanal Mato-Grossense.
Provedor de dados: 14
Autores: CUNHA, N. G. da; DYNIA, J. F.
No Pantanal Mato-Grossense, os solos arenosos (Podzois Hidromorficos) que compoem as sub-regioes da Nhecolandia e dos Paiaguas sao de baixa fertilidade. Nos niveis geomorficos pouco susceptiveis ao alagamento, foram feitos experimentos com o objetivo de testar efeitos da aplicacao de nutrientes, calcario e biofertilizante em forrageiras. Em area de "cordilheira" (cordao arenoso) de baixa fertilidade, Brachiaria decumbens respondeu a aplicacao de nutrientes. Apos tres anos de cultivo respondeu a nitrogenio, enxofre e potassio. Em area de campo cerrado, B. decumbens e B. humidicola responderam a aplicacao de calcario e de nutrientes. Em area de caronal, Vigna unguiculata, B. decumbens e B. brizantha responderam a calcario, e Stylosanthes guianensis e...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Fertilizacao; Mato Grosso do Sul; Nhecolandia; Paiaguas; Pasto nativo; Caronal; Cordilheira; Fertilization; Native pasture; Sand soil; Nutrient; Biofertilizer.; Biofertilizante; Nutriente; Solo Arenoso.; Brazil; Pantanal; Soil.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787757

Respostas de forrageiras a nutrientes em solos da planície sedimentar do Rio Taquari, Pantanal Mato-Grossense.
Provedor de dados: 14
Autores: CUNHA, N. G. da; POTT, A.; COMASTRI FILHO, J. A.; CASAGRANDE, J. C.; DYNIA, J. F.; COUTO, W.
A adicao de fosforo e micronutrientes nao acusou aumento na producao de massa verde de Stylosanthes hamatanem de Pueraria phaseoloides em "cordilheiras" com mata onde o solo arenoso e fertil. O estudo da fertilidade em casa de vegetacao com tres series de Podzol hidromorfico, que representam a catena deste solo na sub-regiao de Nhecolandia e Paiaguas, apresentou dados variavies. Ha deficiencias generalizadas de macronutrientes e as doses testadas de micronutrientes foram aparentemente inadequadas, principalmente o boro, que foi toxico. Em experimento de introducao de forrageiras em "cordilheiras" de media fertilidade, uma adubacao basica (calcario, fosforo, potassio, nitrogenio, enxofre e molibdenio) nao apresentou resposta. Na "cordilheira" de baixa...
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Fertilizacao; Rio taquari; Fertilization; Forage plant; Nutrient.; Planta Forrageira; Solo.; Pantanal; Soil.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787704

Importancia da adubacao e da nutricao na qualidade da soja.
Provedor de dados: 14
Autores: SFREDO, G. J.; CARRAO-PANIZZI, M.C.
Situacao da producao; Valor nutritivo da soja; Funcoes dos nutrientes: Macronutrientes (N, P, K, Ca, Mg e S) Nitrogenio, Fosforo, Potassio, Calcio, Magnesio, Enxofre e Micronutrientes (Fe, Mn, An, Cu, B, Mo, Cl, Ni e Co) Ferro, Boro, Cloro, Molibdenio, Cobre, Zinco, Manganes, Niquel, Cobalto; Exigencias nutricionais da soja: Extracao e exportacao de nutrientes, Acumulo de materia seca da planta, Acumulo de nutrientes na planta; Respostas da soja a nutrientes aplicados: Nitrogenio, Potassio, Enxofre, Molibdenio, Interacao entre nutrientes (Nitrogenio e Potassio, Fosforo e potassio, Nitrogenio e enxofre, Fosforo, enxofre e molibdenio, Enxofre e zinco).
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Macronutriente; Micronutriente; Brasil; Parana; Soybean; Fertilization; Macronutrient; Micronutrient; Grain; Quality.; Adubação; Fisiologia; Grão; Nutrição Vegetal; Qualidade; Soja.; Brazil; Plant nutrition.; Physiology.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448750

Substratos comerciais e adubo de liberação lenta (NPK 14-14-14) na produção de porta-enxerto de cajueiro.
Provedor de dados: 14
Autores: SERRANO, L. A. L.; HAWERROTH, F. J.; TANIGUCHI, C. A. K.; MELO, D. S.
bitstream/item/103337/1/BPD13014.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Anacardium occidentale L; PlÂntulas; Matéria seca total; Fertilization; Total dry matter.; Adubação.; Seedlings.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/982070

Resposta de pastagem degradada de capim-colonião a consorciação com leguminosas e fertilização com fósforo, enxofre e micronutrientes.
Provedor de dados: 14
Autores: SOUZA FILHO, A. P. S. de; TEIXEIRA NETO, J. F.
bitstream/item/32552/1/CPATU-BP127.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Pastagem degradada; Capim-coloniao; Consorciacao; Micronutriente; Degraded pasture; Leguminous; Sulphur; Micronutrient; Fertilization; Production; Dry matter; Analysis.; Adubação; Análise; Enxofre; Fósforo; Matéria Seca.; Leguminosa; Intercropping; Phosphorus.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381272

Recomendacoes tecnicas para o cultivo de soja em regioes de baixas latitudes (&lt; 12oS).
Provedor de dados: 14
Autores: REUNIAO DO PROGRAMA NACIONAL DE PESQUISA DE SOJA REGIOES NORTE-NORDESTE, 11., 1989, Natal.
Calagem e adubacao; Cultivares recomendadas; Populacao, densidade e epocas de semeadura; Instalacao da lavoura; Tecnologia de sementes; Estabelecimento de campo de semente; Colheita; Avaliacao da qualidade das sementes; Fitopatologia; Recomendacoes gerais; Tratamento de sementes; Cancro da haste; Plantas daninhas; Manejo de pragas.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Cultivar; Planta daninha; Congresso; Brasil; Regiao norte; Regiao nordeste; Soybean; Technical recommendation; Inoculation; Fertilization; Variety; Seed; Harvest; Disease; Weed; Pest; Management; Congress; North region; Northeast region.; Adubação; Calagem; Colheita; Doença; Inoculação; Manejo; Pesquisa; Praga; Semente; Soja.; Brazil; Liming; Research.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/450610

Avaliacao agronomica da mangabeira.
Provedor de dados: 14
Autores: GUERRA, A. F.; SALVIANO, A.; GOMES, A. C.
bitstream/CPAC-2009/24130/1/p2002_09.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: ECFLOR300; Fruta nativa; Fruit; Growth; Fertilization; Indigenous organisms; Brasil.; Adubação; Cerrado; Crescimento; Hancornia Speciosa; Mangaba.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567436

Adubacao fosfatada e potassica para a sucessao soja-trigo em latossolo roxo distrofico sob semeadura direta.
Provedor de dados: 14
Autores: LANTMANN, A. F.; ROESSING, A. C.; SFREDO, G. J.; OLIVEIRA, M. C. N. de.
Adubacao fosfatada para a soja; Adubacao potassica para a soja; Adubacao fosfatada para o trigo; Adubacao potassica para o trigo; Efeitos da ausencia de adubacao para soja na sucessao soja-trigo; Efeitos da adubacao e da correcao da acidez sobre os indices de fertilidade do solo; Acidez do solo; Disponibilidade de potassio; Disponibilidade de fosforo; Rendimento do trigo; Rendimento da soja; Analise economica dos efeitos da adubacao para o sistema soja-trigo; Consideracoes finais; Recomendacoes.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Sucessao; Semeadura direta; Brasil; Parana; Soybean; Fertilization; Double-cropping.; Adubação; Soja; Solo.; Brazil; No-tillage; Soil.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445885

Calagem, adubacao e nutricao da cultura da soja.
Provedor de dados: 14
Autores: CORDEIRO, D. S.; PALHANO, J. B.; SFREDO, G. J.; BORKERT, C. M.
Acidez do solo; Fixacao simbiotica do nitrogenio; Fosforo no solo; Potassio; Calcio e magnesio; Interpretacao dos resultados de analise; Marcha de absorcao de macronutrientes pela soja. (Cultivar IAC-2); Recomendacoes de adubacao.
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Brasil; Soybean; Fertilization; Soil acidity; Acidez do Solo; Adubação; Calagem; Soja; Brazil; Liming.
Ano: 1978
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/446793

Recomendacoes tecnicas para o cultivo da soja: areas do Sul do Mato Grosso do Sul, Sudoeste, Norte e Oeste do Parana Zonas 15, 61, 75, 76, 77 e 92.
Provedor de dados: 14
Autores: BRASIL. Ministerio da Agricultura e Reforma Agraria.
A soja e a regiao; Manejo e conservacao do solo; Recomendacoes de cultivares e qualidade das sementes; Praticas culturais; Colheita.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Armazenagem; Planta daninha; Controle; Brasil; Parana; Sao Paulo; Mato Grosso do Sul; Soybean; Management; Conservation; Recommendation; Variety; Quality; Seed; Cultural practice; Harvest; Fertilization; Weed; Control; Disease; Loss; Pest; Adubação; Calagem; Doença; Época de Plantio; Perda; Plantio Direto; Praga; Rotação de Cultura; Semeadura; Soja; Brazil; Crop rotation; Liming; No-tillage; Soil; Sowing date; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445250

Resposta da Brachiaria decumbens cv. Basilisk ao Fósforo e Níveis Críticos de P num Latossolo Roxo.
Provedor de dados: 14
Autores: SOARES, W. V.; MACEDO, M. C. M.; VILELA, L.; SOUZA, O. C. de.
Um experimento no campo foi conduzido num Latossolo Roxo Alico muito argiloso, fase cerradao, em Campo Grande - MS, durante 66 meses (1978- 1984), com os seguintes objetivos: Obter a curva de resposta da Brachiaria decumbens ao fosforo e estimar os niveis criticos de fosforo no solo para o estabecimento e a manutencao de pastagem com essa graminea. Os tratamentos constaram de sete doses de fosforo: 0,40, 80, 160, 320, 640 e 1280kg/ha de P205 como superfosfato triplo, em parcelas de 7x5 m, num delineamento de blocos ao acaso com quatro repeticoes. Dez dias antes da aplicacao dos tratamentos, 2,6t/ha de calcario dolomitico foram incorporadas a 20 cm profundidade. Incluiu-se nos tratamentos adubacao basica constituida de: 50, 20, 50, 5 e 1 kg/ha,...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Cultivar Basilisk; Phosphate; Basilisk; Brazilian savannas; Feed grasses; Fertilization; Latosol; Pasture; Phosphorius; Planta gramínea; Red latosol; Savanna.; Adubação; Brachiaria Decumbens; Cerrado; Fósforo; Fosfato; Gramínea Forrageira; Latossolo Roxo; Pastagem; Solo.; Ferralsols; Fertilizer application; Forage; Fertilizers; Phosphorus; Varieties.; Soil.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546467

Teste de sistema de produção alternativo de arroz de sequeiro, com uso de adubação fosfatada.
Provedor de dados: 14
Autores: OLIVEIRA, J. N. S.; SOBRAL, C. A. M.
Dentro do modelo circular de pesquisa preconizado pela Embrapa a busca de novas alternativas tecnológicas para a agricultura abre enormes perspectivas para a pesquisa em sistemas. O programa de pesquisa em culturas anuais, desenvolvido pela UEPAE-Porto Velho se caracteriza pela interdependência que reflete no enfoque sistêmico dessas pesquisas com cada produto. O processo compreende as etapas básicas de introdução, avaliação de cultivares, definição de melhores técnicas de produção, manejo da cultura, estrudos de alternativas de sistemas, e produção de sementes básicas das cultivares mais promissoras.
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Brasil; Rondonia; Fertilization; Phosphate.; Adubação; Arroz Sequeiro; Fosfato; Oryza Sativa; Sistema de Produção.; Brazil; Rice.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698543

Avaliação da produtividade de leguminosas forrageiras nativas e exóticas com e sem adubação fosfatada, em Petrolina, PE.
Provedor de dados: 14
Autores: SILVA, C. M. M. de S.; FARIA, C. M. B. de.
bitstream/item/48691/1/PA-35-1985.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Avaliacao; Adubacao fosfatada; Productivity; Evaluation; Fertilization; Phosphate.; Leguminosa forrageira; Forragem; Legume; Produtividade.; Forage.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133251

Influência da adubação NPK em bananeira nanicão.
Provedor de dados: 14
Autores: MARTINS, C. E.; NUNES, R. F. de M.; CORDEIRO, G. G.; GOES, E. S. de; BARRETO, A. N.
Avalia as respostas quantitativas da bananeira nanicão, em resposta a adubação, foi instalado no Campo Experimental de São Gonçalo, município de Souza, PB, um ensaio de adubação NPK, usando-se um arranjo fatorial 33 com confundimento de interação tripla, contendo tres tratamentos adicionais em duas repetições, dispostos em delineamento de blocos casualizados.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Fertilizacao; Fertilization; Bananeira nanicão; Cultivo.; Banana; Npk.; Musa.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132513

Planejamento de experimentos de nutrição e adubação com plantas perenes arbóreas.
Provedor de dados: 14
Autores: ROSSETTI, A. G.
O objetivo deste estudo e fornecer informacoes basicas que sirvam de subsidios para o planejamento eficiente de experimentos de adubacao, de campo, com plantas perenes arboreas, de modo que os dados produzidos possam ser avaliados cientificamente, e seus resultados e conclusoes sejam plenamente confiaveis.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Plantas perenes arboreas; Experimento; Estatistica experimental; Perennial arborous plants; Experiment nutrition; Fertilization; Experimental statistics.; Adubação; Nutrição; Planejamento.; Planning.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/420053

A cultura do girassol na região Meio-Norte do Brasil.
Provedor de dados: 14
Autores: RIBEIRO, J. L.
Preparo e correção do solo; Adubação; Época de semeadura; Espaçamento e densidade; Cultivares recomendadas; Controle de plantas daninhas; Controle de pragas; Controle de doenças; Colheita e armazenamento.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Cultivo; Piaui; Maranhão; Fertilization; Pest; Disease; Sunflower; Cultivation.; Adubação; Girassol; Helianthus Annuus; Doença; Praga; Variedade.; Varieties; Weed control.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/63138

Calagem e adubação do sorgo forrageiro.
Provedor de dados: 14
Autores: PITTA, G. V. E.; FRANCA, G. E.; COELHO, A. M.
bitstream/item/53045/1/Circ-17-Calagem-adubacao.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Fertilization; Adubação; Calagem; Sorghum Bicolor; Sorgo Forrageiro; Liming.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/474959

Estimativa do rendimento do tomateiro usando modelos estatisticos com teores iniciais de fosforo no solo e niveis de adubacao fosfatada.
Provedor de dados: 14
Autores: CARRIJO, O. A.; HOCHMUTH, G.
bitstream/item/109211/1/Estimativa-do-rendimento-do-tomateiro.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Modelagem; Fertilization; Modeling.; Adubação; Lycopersicon Esculentum; Tomate.; Tomatoes.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/764708

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

Avaliação técnica e econômica de sistema de produção alternativo para cultura do arroz, com uso de adubação fosfatada.
Provedor de dados: 14
Autores: OLIVEIRA, J. N. S.; SOBRAL, C. A. M.
bitstream/item/59213/1/PA-1563-0001.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Brasil; Rondonia; Phosphate; Fertilization; Economic.; Adubação; Arroz Sequeiro; Economia; Fosfato; Oryza Sativa; Sistema de Produção.; Brazil; Rice.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698546

Avaliacao da eficiencia de fosfatos de rocha parcialmente acidulados e tratados termicamente.
Provedor de dados: 14
Autores: PEREIRA, J. R.; FARIA, C. M. B. de.
Avalia a eficiencia de diferentes fosfatos de rocha com acido sulfurico e termicamente em Latossolo Vermelho Amarelo da regiao do medio Sao Francisco no incremento da produtividade da cultura do milho sob condicao de irrigacao.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Variety; Soils; Fertilization; Phosphate; Maize; Milho; Fertilidade; Fosfato; Variedade; Solo; Zea Mays; Corn.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132823

Cultivador a tração animal modificado para a realização da adubação nitrogenada em cobertura e para a semeadura do feijão da seca consorciado com milho.
Provedor de dados: 14
Autores: GUIMARAES SOBRINHO, J. B.; FINCH, E. O.; RAMALHO, M. A. P.
bitstream/item/37491/1/circ-12-1.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Fertilizacao; Consorciacao; Maize; Bean; Agricultural mechanization; Fertilization; Draught animal.; Feijão; Nitrogênio; Mecanização Agrícola; Milho; Phaseolus Vulgaris; Tração Animal; Zea Mays.; Intercropping; Nitrogen.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/482837

Field and greenhouse tomato yields as functions of nitrogen dosis applied by hand or by drip fertigation system (2009).
Provedor de dados: 14
Autores: GUIMARÃES, T. G.; FONTES, P. C. R.; PEREIRA, P. R. G.; ALVAREZ, V. H.; MONNERAT, P. H.; PUIATTI, M.
bitstream/item/78075/1/p2009-016.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Fertilization; Fertirrigation.; Adubação; Fertirrigação; Nitrogênio; Tomate.; Nitrogen; Tomatoes.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/898279

Recomendacoes tecnicas para o cultivo de soja: Nordeste de Sao Paulo, Minas Gerais, Bahia, Maranhao e Piaui Zonas 55, 61, 91 e 92.
Provedor de dados: 14
Autores: BRASIL. Ministerio da Agricultura e Reforma Agraria.
A soja e a regiao; Manejo e conservacao do solo; Recomendacoes de cultivares e qualidade das sementes; Praticas culturais; Colheita.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Armazenagem; Planta daninha; Controle; Brasil; Sao Paulo; Minas Gerais; Bahia; Maranhao; Piaui; Soybean; Management; Conservation; Recommendation; Variety; Quality; Seed; Cultural practice; Harvest; Fertilization; Weed; Control; Disease; Pest; Loss; Adubação; Calagem; Doença; Época de Plantio; Perda; Plantio Direto; Praga; Soja; Brazil; Liming; No-tillage; Soil; Sowing date; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445249

Fontes de nitrogenio para culturas irrigadas no Semi-Arido.
Provedor de dados: 14
Autores: FARIA, C. M. B. de; PEREIRA, J. R.
Verificou a viabilidade tecnica de novas fontes de nitrogenio. O delineamento experimental e em blocos ao acaso, com esquema fatorial formado de tres fontes de nitrogenio (nitrossulfocalcio, ureia compactada com gesso e ureia) e tres niveis (40, 80 e 120 kg/ha de N), com dois tratamentos adicionais (uma testemunha e ureia mais gesso isolados) e com quatro repeticoes.
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Fertilization; Fertilidade; Irrigação; Nitrogênio; Solo; Irrigation; Nitrogen; Soil.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132013

Girassol: nutricao mineral e adubacao.
Provedor de dados: 14
Autores: SFREDO, G. J.; CAMPO, R. J.; SARRUGE, J. R.
Exigencias nutricionais; Efeitos dos nutrientes essenciais; Calagem e adubacao.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Nutricao mineral; Brasil; Sunflower; Fertilization; Sulphur.; Adubação; Calagem; Boro; Cálcio; Cobre; Ferro; Enxofre; Fósforo; Girassol; Magnésio; Manganês; Nitrogênio; Molibdênio; Potássio; Zinco.; Brazil; Boron; Copper; Calcium; Liming; Magnesium; Manganese; Iron; Nutrition; Molybdenum; Nitrogen; Phosphorus; Potassium; Zinc.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445619

Recomendações para a formação e manejo de pastagens de capim Andropógon (Andropogon gayanus Kunth) no Estado do Pará.
Provedor de dados: 14
Autores: DIAS FILHO, M. B.
bitstream/item/59116/1/CPATU-ComTec38.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Pasture; Management; Fertilization; Seedling.; Adubação; Andropogon Gayanus; Manejo; Pastagem; Semeadura.; Andropogon.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382491

Algumas informações sobre a cultura do grão-de-bico (Cicer arietinum L.) 1984.
Provedor de dados: 14
Autores: SHARMA, R. D.
Origem e distribuição; Classificação botânica (Purseglove, 1977); Importância econômica; Exigências ecológicas; Solo e clima; Genótipos; Rotação; Plantio; Adubação e calagem; Tratos culturais; Colheita e rendimento; Doenças, insetos e nematóides; Queima do grão-de-bico; Murcha do grão-de-bico; Ferrugem do grão-de-bico, Pó branco do grão-de-bico; Insetos; Nematóides.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Grão-de-bico; Cultura; Cultivo; Plantas leguminosas; Chickpea; Cultivation; Diseases; Fertilization; Harvest; Leguminous plants; Pest insects.; Cicer Arietinum.; Botany; Classification; Liming.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/982812

Pesquisa em irrigação no trópico Semi-Árido: solo, água, planta.
Provedor de dados: 14
Autores: EMBRAPA. Centro de Pesquisa Agropecuária do Trópico Semi-Árido.
Caracteristicas fisico hidricas de tres latossolos irrigados do Projeto Bebedouro. Evapotranspiracao de feijao-de-corda. Metodologia para determinar as necessidades de agua das culturas irrigadas. Efeito da lamina de irrigacao e da adubacao nitrogenada na producao de graos de milho. Efeito do regime de irrigacao e da adubacao nitrogenada na producao de graos de milheto. Influencia do teor de umidade no solo e da adubacao nitrogenada no rendimento de graos de feijao.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Região árida; Relação; Característica hídrica; Plant; Fertilization; Cowpea; Maize; Millet.; Irrigação; Água; Adubação; Feijão de Corda; Evapotranspiração; Milheto; Pennisetum Typhoides; Milho; Pesquisa; Planta; Vigna Unguiculata; Solo; Zea Mays.; Evapotranspiration; Irrigation; Soil; Water.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131950

Influência de diferentes adubações sobre a produção de milho no Nordeste e obtenção de informações para calibração de análise de solo.
Provedor de dados: 14
Autores: FARIA, C. M. B. de; MELO, J. N.; SÁ, V. A. de L.; TIMÓTEO SOBRINHO, A.; SANTOS, M. A. C. dos.
Foram analisados 57 experimentos instalados em vários locais do Nordeste durante os anos de 1974 a 1979 com os seguintes objetivos: a) avaliar a influência da aplicação de fertilizantes no rendimento da cultura do milho; b) obter informações para calibração de análise de solo; c) estimar doses econômicas de adubação; d) verificar quais as características do solo que influem na produção. Apenas nitrogênio e fósforo tiveram efeitos significativos na produção do milho. Com o uso desses nutrientes foram obtidos incrementos na produtividade que variaram desde 37 ate 1,137%. Os níveis econômicos de adubacao nitrogenada variaram de 78 a 139 kg/ha de N com uma média de 109 kg/ha de N,. Obtiveram-se níveis críticos de fósforo no solo com valores médios de 8,7 ppm...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Fertilização; Análise de solo; Calibração; Fertilization; Analysis.; Milho; Solo; Zea Mays.; Corn; Calibration; Soil.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132001

Efeitos da adubacao fosfatada em eucalipto, no estado de Rondonia.
Provedor de dados: 14
Autores: CASTRO, A. W. V. de.
bitstream/item/57081/1/PA-1565-0001.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Brasil; Rondonia; Forest; Species; Fertilization; Phosphato.; Adubação; Espécie; Eucalipto; Fosfato.; Floresta; Eucalyptus; Brazil.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698548

Nutrição e adubação do milho visando obtenção do minimilho.
Provedor de dados: 14
Autores: VASCONCELLOS, C. A.; ALVES, V. M. C.; PEREIRA FILHO, I. A.; PITTA, G. V. E.
bitstream/CNPMS/13768/1/Circ_09.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Minimilho; Nutricao mineral; Babycorn; Fertilization; Mineral nutrition.; Adubação.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/485233

Principios metodologicos para avaliacao agronomica de fontes de fosforo.
Provedor de dados: 14
Autores: GOEDERT, W. J.; SOUSA, D. M. G. de; REIN, T. A.
bitstream/item/101065/1/doc-22.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Avaliacao; Phosphate fertilizers; Evaluation; Methods; Avaliação agronômica; Fertilização; Fertilization; Fontes; Fontes de fósforo; Metodologia; Nutrientes; Phosphate; Princípios metodológicos; Soil fertilization.; Adubo; Adubação; Fertilizante; Fertilizante Fosfatado; Fósforo; Método de Pesquisa; Solo.; Phosphorus; Methodology; Soil.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549456

Dose econômica e eficiência agronômica de composto orgânico proveniente de resíduos da criação e abate de pequenos ruminantes e de adubo nitrogenado na produção de grãos de milho em Luvissolo Háplico, no semiárido cearense.
Provedor de dados: 14
Autores: SOUZA, H. A. de; VIEIRA, L. V.; PRIMO, A. A.; MELO, M. D.; FEITOSA, T. S.; SOUZA, I. M. de; PEREIRA, G. de A. C.; GUEDES, F. L.; POMPEU, R. C. F. F.; NATALE, W.
bitstream/item/125705/1/CNPC-2015-Cot-144.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Fertilization; Abattoir byproducts; Residues.; Composto orgânico; Fertilizante nitrogenado; Compostagem; Resíduo orgânico; Caprino; Ovino; Abate; Compound fertilizers; Organic fertilizers; Goats; Sheep.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1018324

Comportamento produtivo de 12 gramineas forrageiras de corte em diferentes niveis de adubação fosfatada em Porto Velho-RO.
Provedor de dados: 14
Autores: MENDONCA, J. F. B.; GONCALVES, C. A.
bitstream/item/57078/1/PA-1546-0001.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Gramineas; Forrageiras; Brasil; Porto Velho; Rondonia; Fertilization; Phosphate.; Adubação; Fosfato.; Brazil; Forage; Grasses.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698529

Avaliação de genótipos de alface (Lactua sativa L.) de folhas crespas e alternativas de adubação para o cerrado de Roraima.
Provedor de dados: 14
Autores: LUZ, F. J. de F.
Tipo: Folhetos
Palavras-chave: Avaliacao; Folhas crespas; Roraima; Savana; Fertilization; Adubação; Alface; Cerrado; Genótipo; Genotype; Lettuce.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/687505

Efeitos da adubação, configuração de plantio e cultivares na cultura do gergelim no nordeste do Brasil.
Provedor de dados: 14
Autores: BELTRAO, N. E. de M.; NOBREGA, L. B. da; SOUSA, R. P. de; SOUZA, J. E. G.
bitstream/item/33349/1/EFEITOS-DA-ADUBACAO.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Cultivar; Indicum; Brasil; Paraiba; Patos; Sesame; Fertilization; Spacing.; Adubação; Espaçamento; Gergelim; População.; Sesamum; Population.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262926

Resposta a N, P e K, por culturas anuais no estado de Rondonia.
Provedor de dados: 14
Autores: LOURENCO, R. S.
Considerando o cultivo de culturas anuais nas diferentes condicoes de fertilidade, o trabalho procura determinar que niveis e de que elementos, se evidenciam as melhores respostas a adubacao. Os experimentos foram instalados nos municipios de Guajara-Mirim(Latossolo Amarelo - Textura muito media), Vilhena(Latossolo Vermelho-Amarelo), Porto Velho(Latossolo Amarelo - Textura muito pesada e Laterita Hidromorfica) e Ouro Preto d'Oeste(Podzolicos, em unidades denominadas Xibiu, Vermelhao, Paraiso e Ouro Preto). Utilizou-se o delineamento experimental em blocos ao acaso e com quatro repeticoes. Os tratamentos constaram de variacoes crescentes de doses de um dos nutrientes em estudo (N ou P ou K), mantendo-se os demais, constantes. As culturas indicadoras foram:...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Cultura anual; Brasil; Rondonia; Fertilization; Bean; Maize; Soybean.; Adubação; Arroz; Feijão; Glycine Max; Milho; Oryza Sativa; Phaseolus Vulgaris; Npk; Soja; Zea Mays.; Brazil; Corn; Rice.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/697945

Recomendações técnicas para a cultura da soja no Parana 1987/88.
Provedor de dados: 14
Autores: OCEPAR. Programa de Pesquisa (Cascavel, PR).
Melhoramento de soja para alimentacao humana; Manejo do solo; Clima; Cultivares; Populacao e densidade de semeadura; Epocas de semeadura; Instalacao da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doencas; Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Brasil; Gesso agricola; Cultivar; Planta daninha; Parana; Alimentacao humana; Soybean; Technical recommendation; Cultural practice; Fertilization; Variety; Weed; Pest; Disease; Fungus; Nematode; Harvest.; Adubação Foliar; Adubação; Bactéria; Baculovirus Anticarsia; Calagem; Colheita; Doença; Época de Semeadura; Fungo; Nematóide; Pratica Cultural; Praga; Solo; Soja; Vírus.; Gypsum; Brazil; Liming; Human nutrition; Sowing date.; Soil.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448322

Resposta da seringueira a diferentes niveis de N, P, K em condicoes de seringal em formacao, no municipio de Ouro Preto D'Oeste.
Provedor de dados: 14
Autores: LOURENCO, R. S.; MEDRADO, M. J. S.; LISBOA, S. de M.
bitstream/item/59542/1/PA-15800001.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Rondonia; Ouro Preto D'Oeste; Rubber trees; Fertilization; Brasil.; Adubação; Hevea; Npk; Seringueira.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698563

Recomendações técnicas para a cultura da soja no Paraná 1991/92.
Provedor de dados: 14
Autores: EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária.
A agricultura e Mercosul; Manejo do solo; Rotacao de culturas; Clima; Cultivares; Populacao e densidade de semeadura; Epocas de semeadura; Instalacao da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doencas; Colheita; Retencao foliar ("haste verde"); Tecnologia de sementes.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Cultivar; Densidade; Epoca; Planta daninha; Controle; Retencao foliar; Brasil; Parana; Soybean; Technical directions; Fertilization; Variety; Weed; Control; Pest; Disease; Fungus; Nematode; Harvest; Seed.; Adubação; Bactéria; Colheita; Doença; Fungo; Manejo; Nematóide; Pratica Cultural; População; Praga; Semeadura; Rotação de Cultura; Semente; Tecnologia; Solo; Vírus.; Soja; Density; Crop rotation; Crop management; Brazil; Population; Plant density; Soil; Sowing date.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/447056

Calagem e adubação em espécies florestais plantadas na propriedade rural.
Provedor de dados: 14
Autores: BELLOTE, A. F. J.; NEVES, E. J. M.
bitstream/item/42013/1/CT0054.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Fertilization; Espécie exótica.; Solo; Nutrição; Adubação; Calagem; Plantio.; Liming; Planting.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/306311

Adubações nitrogenada e potássica e calagem para a cultura da cenoura em solos de cerrado em Roraima.
Provedor de dados: 14
Autores: LUZ, F. J. de F.
bitstream/item/175375/1/cot00197-cenoura-joaci.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Brasil; Roraima; Carrot; Fertilization; Soil Savana.; Adubação; Calagem; Cenoura; Cerrado; Solo.; Brazil; Liming.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/688074

Recomendacoes tecnicas para a cultura do gergelim no nordeste brasileiro.
Provedor de dados: 14
Autores: BELTRAO, N. E. de M.; FREIRE, E. C.; LIMA, E. F.
Sistema de cultivo
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Cultivo; Controle; Brasil; Nordeste; Sesame; Cultivation; Fertilization; Pest; Disease; Control.; Adubação; Doença; Gergelim; Praga; Sesamum Indicum; Solo.; Soil.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262825

Compilação dos trabalhos apresentados.
Provedor de dados: 14
Autores: CURSO SOBRE SUPLEMENTAÇÃO MINERAL EM BOVINOS, 3., 2000. Campo Grande, MS.
Importância da suplementação mineral para bovinos de corte. Estratégia de suplementação mineral de bovinos de corte. Calculo de misturas minerais para bovinos. Alguns aspectos da adubação de pastagens tropicais em relação a suplementação mineral. Uso de promotores de crescimento na dieta de bovinos de corte. Suplementação de bovinos em pastejo. Elementos minerais quelatados em suplementos para bovinos de corte. Fósforo suplementar para bovinos de corte.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovino de corte; Suplementação mineral; Estimulantes de crescimento; Quelato; Supplements; Rations; Growth promoters; Fertilization; Brazilian savannas.; Adubação; Cálculo de Ração; Cerrado; Fósforo; Mistura Mineral; Mineral; Nutrição; Pastagem.; Chelating agents; Beef cattle; Nutrition; Nutrients; Pastures; Phosphorus.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/324274

Formacao e manejo de pastagens de capim andropogon.
Provedor de dados: 14
Autores: ANDRADE, R. P. de; THOMAS, D.; ROCHA, C. M. C. da; GOMES, D. T.; COUTO; W.; COSENZA, G. W.; MOORE, C. P.
As braquiarias sao as gramineas mais utilizadas para a formacao de pastagens nas regioes dos Cerrados por sua boa adaptacao as condicoes de solo e clima porem, apresentam problemas de ataques de pragas; dificuldades de consorciacao com legumimosas e, de fotosensibilizacao, principalmente com animais jovens. Considerando esses problemas, o CPAC-EMBRAPA recomendou o capim andropogon que em seis anos de pesquisas, demonstrou boas qualidades. Apresenta tecnicas de preparo de solo, calagem e adubacao, semeadura, producao de sementes e manejo de pastagens.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Consorciacao; Fertilization; Pasture.; Adubação; Calagem; Brachiaria; Capim Andropogon; Cerrado; Gramínea; Leguminosa; Manejo; Manejo do Solo; Pastagem; Plantio; Praga de Planta; Produção; Silagem; Semente; Solo.; Hay; Liming; Silage.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/547316

Desenvolvimento inicial de Myrsine guianensis Aubl. e Diospyros sericea A. dc. em viveiro, em função de doses de fósforo e inoculação com fungos micorrízicos.
Provedor de dados: 14
Autores: PARRON, L. M.; VIEIRA, F. A.; MIRANDA, J. C. C. de; TSUBOI, L. A.
O objetivo deste estudo foi avaliar o desenvolvimento inicial de Myrsine guianensis Aubl. (azeitona-do-mato) e Diospyros sericea A. DC. (olho-de-boi), função de duas doses de fósforo e da inoculação com fungos micorrízicos arbusculares (FMA) nativos do Cerrado. Ambas as espécies são lenhosas nativas de Matas de Galeria do Distrito Federal e apresentam potencial de utilização em plantios mistos destinados ao repovoamento de áreas degradadas. As mudas foram produzidas, em viveiro, irrigado, com 30% de sombreamento, em tubetes de 290 ml. O inoculante de fungos micorrízicos arbusculares constitui em uma mistura das espécies Glomus brasilianum, Glomus etunicatum, Gigaspora margarita e Scutellospora cerradensis. Como tratamentos, foram utilizados duas...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Myrsine guianensis; Diospyros sericea; Azeitona do mato; Mata de galeria; Olho de boi; Produção de muda; Savanna; Fertilization; Código Florestal.; Cerrado; Espécie Nativa; Muda.; Cutting; Mycorrhizal fungi; Silviculture.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568877

Influência da vermiculita na produção do caupi em condições distintas de umidade e adubação: relatório sobre os resultados do experimento.
Provedor de dados: 14
Autores: CHOUDHURY, E. N.; FARIA, C. M. B. de; MAGALHAES, A. A. de.
Estudar o tipo de vermiculita que apresenta melhor potencialidade em exploracoes agricolas, com doses variando de 0 a 9 m3/ha, em "aplicacoes localizadas" em sulco de plantio, com distribuicao manual e com dois regimes de irrigacao.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Caupi; Cowpea; Fertilization; Vermiculita; Adubação; Irrigação; Produção; Vigna Unguiculata; Beans; Crop yield; Irrigation; Vermiculite.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131770

Níveis e fontes de nitrogênio para milho em casa de vegetação.
Provedor de dados: 14
Autores: FARIA, C. M. B. de; PEREIRA, J. R.
bitstream/item/182094/1/FL-07850.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Casa de vegetacao; Fertilization; Greenhouse; Maise; Milho; Fertilidade; Nitrogênio; Solo; Zea Mays; Corn; Nitrogen; Soil.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132008

Elementos limitantes à produção de pastagens nativas consorciadas com leguminosas na Ilha de Marajó.
Provedor de dados: 14
Autores: TEIXEIRA NETO, J. F.; SOUZA FILHO, A. P. da S.; SERRÃO, E. A. S.
bitstream/item/32036/1/CPATU-BP119.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Savana; Fertilização; Ilha de Marajó; Pará; Belém; Native pasture; Savanna; Fertilization; Production; Dry matter.; Matéria Seca; Pastagem Nativa; Produção.; Amazonia.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383703

Comportamento produtivo de 12 gramíneas forrageiras de corte em diferentes níveis de adubação fosfatada num solo de Porto Velho,RO.
Provedor de dados: 14
Autores: MENDONÇA, J. F. B.; GONCALVES, C. A.
Procurou-se selecionar forrageira de corte superiores em produtividade e valor nutritivo. Foram avaliadas quanto a producao de materia seca, teores de proteina bruta, calcio e fosforo ea realcao colmo/folha, doze gramineas de corte tratadas com 0,40, 80 e 120kg de P2O5/ha. Durante o periodo de dois anos (9 cortes), foram testadas, onze cultivares de capim-elefante (Pennisetum purpureum Schum.) e uma de capim-venezuela (Tripsacum australe). O capim-elefante cv. Cameroon, destacou-se como sendo o tratamento mais eficiente, com o nivel de 80kg de P2O5/ha.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Forrageira; Brasil; Rondonia; Porto Velho; Forage grasses cut; Fertilization; Phosphate.; Adubação; Fosfato; Gramínea.; Brazil.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/697954

Uso de gesso agrícola nos solos dos cerrados.
Provedor de dados: 14
Autores: SOUSA, D. M. G. de; LOBATO, E.; REIN, T. A.
Caracterização e extensão do problema da acidez nos solos dos cerrados; Alterações nas características químicas do solo com o uso do gesso agrícola; Respostas de culturas anuais; Respostas de culturas perenes; Recomendações do gesso.
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Correção do solo; Brasil; Fertilization; Gesso agrícola; Subsoil acidity; Uso.; Acidez do Solo; Adubação; Cerrado; Corretivo; Enxofre; Gesso; Solo.; Acidity; Cerrado soils; Gypsum; Brazil; Phosphogypsum; Soil; Savannas; Subsoil.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/554409

Recomendações técnicas para a cultura da soja no Paraná 1988/89.
Provedor de dados: 14
Autores: OCEPAR. Programa de Pesquisa (Cascavel, PR).
Aspectos da comercialização da soja; Manejo do solo; Rotação de culturas; Clima; Cultivares; População e densidade de semeadura; Épocas de semeadura; Instalção da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doenças; Colheita; Retenção foliar ("haste verde").
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendação técnica; Planta daninha; Rotação; Cultivar; Brasil; Parana; Soybean; Technical recommendation; Cultural practice; Weed; Variety; Fertilization; Disease; Pest; Nematode; Fungus; Harvest; Seed.; Adubação Foliar; Acidez; Adubação; Bactéria; Calagem; Colheita; Época de Semeadura; Doença; Fungo; Gesso; Manejo; Nematóide; Pratica Cultural; Praga; Semente; Vírus.; Soja; Solo; Acidity; Brazil; Crop rotation; Gypsum; Liming; Soil management; Sowing date.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448323

Batata-doce (Ipomoea batatas (L.) Lam.).
Provedor de dados: 14
Autores: MIRANDA, J. E. C. de; FRANÇA, F. H.; CARRIJO, O. A.; SOUZA, A. F.
bitstream/item/74851/1/CNPH-DOCUMENTOS-3-BATATA-DOCE-FL-07810.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Batata-doce; Cultivar; Propagacao; Controle; Classificacao; Soqueira; Rotacao; Feeding; Fertilization; Propagation; Spacing; Diseases; Control; Pest insects; Fungus; Nematodes; Harvest.; Adubação; Alimento; Calagem; Clima; Colheita; Doença; Embalagem; Espaçamento; Época de Plantio; Fertilizante; Fungo; Inseto; Irrigação; Ipomoea Batatas; Nematóide; Praga; Solo; Sistema de Produção; Variedade; Vírus.; Crop rotation; Cropping systems; Farming systems; Fertilizers; Climate; Classification; Liming; Irrigation; Packaging; Planting date; Sweet potatoes; Soil; Varieties.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/768390

Influência de adubação na produção e na proteína de batata doce.
Provedor de dados: 14
Autores: CARVALHO, M. P. M.; MOURA, L. L.; STURN, A. P.
bitstream/item/118254/1/proteina-da-batata-doce.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Sweet potato; Fertilization; Protein.; Adubação; Batata Doce; Proteína.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/410568

Cultura do girassol: tecnologia de produção.
Provedor de dados: 14
Autores: CASTRO, C. de; CASTIGLIONI, V. B. R.; BALLA, A.
Escolha da area e preparo do solo; Correcao da acidez; Adubacao; Epoca de plantio; Plantio; Densidade; Controle de plantas daninhas; Doencas e pragas; Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Preparo; Semeadura direta; Epoca; Densidade; Planta daninha; Brasil; Sunflower; Production; Fertilization; Weed; Disease; Pest; Harvest.; Acidez; Adubação; Colheita; Doença; Girassol; Pesquisa; Praga; Semeadura; Produção; Solo.; Acidity; Density; Brazil; No-tillage; Research; Sowing date.; Soil.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445278

Manejo do esterco líquido de suínos e sua utilização na adubação do milho.
Provedor de dados: 14
Autores: KONZEN, E. A.; PEREIRA FILHO, I. A.; BAHIA FILHO, A. F. de C.; PEREIRA, F. A.
bitstream/item/37504/1/circ-25.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Maize; Fertilization; Manure.; Adubação; Dejeto; Esterco; Milho; Suíno; Zea Mays.; Swine; Wastes.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/478848

Manejo da adubacao nitrogenada para as principais culturas das areas irrigadas do tropico Semi-Arido.
Provedor de dados: 14
Autores: FARIA, C. M. B. de; PEREIRA, J. R.
Trata de estudar fontes e niveis de nitrogenio, nas culturas de tomate e milho, em areas irrigadas do tropico semi-arido. A analise de variancia dos dados de producao mostrou que houve influencia positiva dos niveis, sem contudo haver diferenca significativa entre as fontes de nitrogenio.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Adubacao nitrogenada; Lycopersicum esculentum; Tomato; Management; Fertilization; Fertilidade; Irrigação; Manejo; Milho; Tomate; Solo; Zea Mays; Corn; Irrigation; Nitrogen; Soil.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132005

Capim Pojuca.
Provedor de dados: 14
Autores: EMBRAPA (Brasilia, DF).
Caracteristicas morfologicas; Caracteristicas agronomicas; Adaptacao; Calagem e adubacao; Semeadura; Produtividade; utilizacao e manejo de pastagens do capim Pojuca.
Tipo: Folders
Palavras-chave: Paspalum atratum; Pojuca; Adaptacao; Agronomic characters; Adaptation; Fertilization; Management; Productivity; Brazilian savannas; Adubação; Calagem; Características Agronômicas; Cerrado; Manejo; Pastagem; Produtividade; Semeadura; Liming; Pastures; Sowing.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/868831

Nitrogênio e regulador de crescimento no algodoeiro no sistema plantio direto.
Provedor de dados: 14
Autores: LAMAS, F. M.; STAUT, L. A.
bitstream/item/39666/1/PA-6-1998.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Fertilization; Growth control; Direct sowing.; Algodão; Adubação; Cerrado; Gossypium Hirsutum; Nitrogênio; Plantio Direto; Regulador de Crescimento.; Cotton; Nitrogen.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/241138

Subtidal Microphytobenthos: A Secret Garden Stimulated by the Engineer Species Crepidula fornicata
Provedor de dados: 5
Autores: Androuin, Thibault; Polerecky, Lubos; Decottignies, Priscilla; Dubois, Stanislas; Dupuy, Christine; Hubas, Cedric; Jesus, Bruno; Le Gall, Erwan; Marzloff, Martin; Carlier, Antoine.
The slipper limpet Crepidula fornicata is an emblematic invasive species along the northeast Atlantic coast. This gregarious gastropod lives in stacks of several individuals and forms extended beds in shallow subtidal areas. The effects of this engineer species on the colonized habitat can be physical (e.g., presence of hard-shell substrates with uneven topography) or biological (e.g., nutrient enrichment by direct excretion or via biodeposition). We hypothesized that through biological activity, nutrient fluxes at the sediment-water interface are enhanced, leading to stimulated primary productivity by microphytobenthos (MPB) associated with Crepidula beds. To test this fertilization hypothesis, we conducted a 10-day mesocosm experiment using C. fornicata...
Tipo: Text
Palavras-chave: Crepidula fornicata; Engineer species; Subtidal microphytobenthos; Fertilization; Hyperspectral imaging.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00472/58338/60893.pdf

Rapid root assimilation of added phosphorus in a lowland tropical rainforest of French Guiana
Provedor de dados: 5
Autores: Van Langenhove, Leandro; Janssens, Ivan A.; Verryckt, Lore; Brechet, Laetitia; Hartley, Iain P.; Stahl, Clement; Courtois, Elodie; Urbina, Ifigenia; Grau, Oriol; Sardans, Jordi; Peguero, Guille; Gargallo-garriga, Albert; Peñuelas, Josep; Vicca, Sara.
Theory states that tree growth in lowland tropical forests on old, weathered soils is limited by low phosphorous (P) availability. However, evidence for P limitation from nutrient manipulation experiments remains unclear, which raises the question whether trees are taking up added P. In French Guianese lowland rainforest, we measured changes in nitrogen (N) and P availability before and up to two months after N and P addition. We measured in soils with intact root systems and soils excluding roots and mycorrhizal fungi with root exclusion cylinders. When the root system was excluded, P addition increased P availability to a much greater extent and for a longer time than where the roots remained undisturbed. N dynamics were unaffected by root...
Tipo: Text
Palavras-chave: Tropical forest; Phosphorus; Nitrogen; Fertilization; Root system; Plant root simulator probes.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00589/70161/68163.pdf

Fish Reproduction Is Disrupted upon Lifelong Exposure to Environmental PAHs Fractions Revealing Different Modes of Action
Provedor de dados: 5
Autores: Vignet, Caroline; Larcher, Thibaut; Davail, Blandine; Joassard, Lucette; Le Menach, Karyn; Guionnet, Tiphaine; Lyphout, Laura; Ledevin, Mireille; Goubeau, Manon; Budzinski, Helene; Begout, Marie-laure; Cousin, Xavier.
Polycyclic aromatic hydrocarbons (PAHs) constitute a large family of organic pollutants emitted in the environment as complex mixtures, the compositions of which depend on origin. Among a wide range of physiological defects, PAHs are suspected to be involved in disruption of reproduction. In an aquatic environment, the trophic route is an important source of chronic exposure to PAHs. Here, we performed trophic exposure of zebrafish to three fractions of different origin, one pyrolytic and two petrogenic. Produced diets contained PAHs at environmental concentrations. Reproductive traits were analyzed at individual, tissue and molecular levels. Reproductive success and cumulative eggs number were disrupted after exposure to all three fractions, albeit to...
Tipo: Text
Palavras-chave: Polycyclic aromatic hydrocarbons; Zebrafish; Spawning success; Fertilization; Gonad differentiation; Molecular mechanisms.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00355/46641/46465.pdf

Cryopreservation of sperm in marine fish
Provedor de dados: 5
Autores: Suquet, Marc; Dreanno, Catherine; Fauvel, Christian; Cosson, J; Billard, R.
Since the first work of Blaxter in 1953, fish sperm cryopreservation has been attempted on about 30 marine species. The present paper reviews the techniques used and the results published in these species. Particular attention is paid to the handling procedure of sperm before freezing, the problems of semen ageing and semen contamination with urine. The quality of frozen-thawed semen was evaluated using previously standardized biotests, such as a two-step motility activation technique adapted for the different species and fertilization assays using a discriminating insemination technique. Most extenders used in marine fish are saline or sugar solutions. From the investigated cryoprotectants, dimethyl sulphoxide (DMSO) generally leads to the best results....
Tipo: Text
Palavras-chave: DMSO; Insemination; Fertilization; Cryopreservation; Fish sperm.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-611.pdf

Métabolisme énergétique du spermatozoïde d'huître creuse (Crassostrea gigas)
Provedor de dados: 5
Autores: Boulais, Myrina.
The present study aims at describing the energy metabolism of Pacific oyster, Crassostrea gigas, spermatozoon. The main objectives are: (1) describing the kinetic of cellular and biochemical characteristics of Pacific oyster spermatozoon during its movement phase, (2) identifying the metabolic pathways to produce energy and their substrates, (3) determining the involvement of energy metabolism in fertilization success. The results showed the long duration (ranging 24 to 72h) of the movement of Pacific oyster spermatozoon and the maintenance of a high intracellular ATP content until the end of the movement phase. The role of oxidative phosphorylation (OXPHOS) in ATP production was highlighted. Alternative ATP producing pathways might contribute to sustain...
Tipo: Text
Palavras-chave: Fécondation; Sperme; Analyse du mouvement; Métabolisme énergétique; RMN; Cytométrie en flux; Crassostrea gigas; Reproduction; Fertilization; Sperm; Movement analysis; Energetic metabolism; NMR; Flow cytometry.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00498/60940/64334.pdf

Impacts of Deepwater Horizon oil and associated dispersant on early development of the Eastern oyster Crassostrea virginica
Provedor de dados: 5
Autores: Vignier, J.; Donaghy, L.; Soudant, P.; Chu, F. L. E.; Morris, J. M.; Carney, M. W.; Lay, C.; Krasnec, M.; Robert, Rene; Volety, A. K.
The explosion of the Deepwater Horizon (DWH) oil platform resulted in large amounts of crude oil and dispersant Corexit 9500A® released into the Gulf of Mexico and coincided with the spawning season of the oyster, Crassostrea virginica. The effects of exposing gametes and embryos of C. virginica to dispersant alone (Corexit), mechanically (HEWAF) and chemically dispersed (CEWAF) DWH oil were evaluated. Fertilization success and the morphological development, growth, and survival of larvae were assessed. Gamete exposure reduced fertilization (HEWAF: EC201 h = 1650 μg tPAH50 L− 1; CEWAF: EC201 h = 19.4 μg tPAH50 L− 1; Corexit: EC201 h = 6.9 mg L− 1). CEWAF and Corexit showed a similar toxicity on early life stages at equivalent nominal concentrations....
Tipo: Text
Palavras-chave: Deepwater Horizon oil; Oyster; Fertilization; CEWAF; Corexit; PAH.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00277/38853/42693.pdf

Effects of cytochalasin B on fertilization and ploidy in the Pacific oyster Crassostrea gigas
Provedor de dados: 5
Autores: Ledu, Christophe; Mccombie, Helen.
The effects of cytochalasin B on fertilization and ploidy in Crassostrea gigas were examined in a controlled experiment. This enabled us to better understand why variable ploidy results have been found with the retention of polar bodies in previous studies on bivalve mollusks, and what the interaction with fertilization may be. By looking at the early development of Crassostrea gigas embryos with sequential samples stained using Hoechst 33258, a fluorescent DNA-specific dye, we compared normal evolution of fertilized eggs with that obtained with cytochalasin B treatment. In treated eggs, embryos with both three and four pronuclei were found after the second meiotic division. When embryos had three pronuclei, these were identified as the female pronucleus...
Tipo: Text
Palavras-chave: Crassostrea gigas; Fertilization; Cytochalasin B; Polar body; Polyploidy.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-2845.pdf

First study in cryopreserved Crassostrea angulata sperm
Provedor de dados: 5
Autores: Riesco, Marta F.; Felix, Francisca; Matias, Domitilia; Joaquim, Sandra; Suquet, Marc; Cabrita, Elsa.
Sperm cryopreservation is a widely employed technique that promotes alternative techniques to contribute to broodstock management or restoration programs for species of commercial interest, endangered species or species with an interesting genotype. The preservation of genetic material from improved stocks or from the original population is extremely important for the oyster aquaculture industry to prevent the potential impacts of epidemic diseases and natural disasters. The Portuguese oyster, Crassostrea angulata, was the most important species commercialized by the shellfish industry. However, inadequate management of this industry and pathology occurrences resulted in a significant decrease in natural populations. For this reason, in this work a...
Tipo: Text
Palavras-chave: Crassostrea angulata; Sperm; Cryopreservation; Motility; Viability; Fertilization.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00333/44432/44098.pdf

Etude experimentale de la fertilisation phosphatee dans les claires a huitres
Provedor de dados: 5
Autores: Deltreil, Jean-pierre; Feuillet, Michelle; Archambeau, Guy.
Tipo: Text
Palavras-chave: Phosphate concentration; Fertilization; Oyster pond.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/1977/publication-1974.pdf

Disentangling Drought and Nutrient Effects on Soil Carbon Dioxide and Methane Fluxes in a Tropical Forest
Provedor de dados: 5
Autores: Bréchet, Laëtitia; Courtois, Elodie A.; Saint-germain, Thomas; Janssens, Ivan A.; Asensio, Dolores; Ramirez-rojas, Irene; Soong, Jennifer L.; Van Langenhove, Leandro; Verbruggen, Erik; Stahl, Clément.
Tropical soils are a major contributor to the balance of greenhouse gas (GHG) fluxes in the atmosphere. Models of tropical GHG fluxes predict that both the frequency of drought events and changes in atmospheric deposition of nitrogen (N) will significantly affect dynamics of soil carbon dioxide (CO2) and methane (CH4) production and consumption. In this study, we examined the combined effect of a reduction in precipitation and an increase in nutrient availability on soil CO2 and CH4 fluxes in a primary French Guiana tropical forest. Drought conditions were simulated by intercepting precipitation falling through the forest canopy with tarpaulin roofs. Nutrient availability was manipulated through application of granular N and/or phosphorus (P) fertilizer to...
Tipo: Text
Palavras-chave: Carbon dioxide; Drought; Fertilization; Methane; Nitrogen; Phosphorus; Soil GHG fluxes; Tropical forest.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00595/70694/68903.pdf

Vitamin E and reduced glutathione in Prochilodus lineatus (curimba) semen cryopreservation (Characiformes: Prochilodontidae)
Provedor de dados: 83
Autores: Paula,Daniella A. J.; Andrade,Estefânia S.; Murgas,Luis D. S.; Felizardo,Viviane O.; Winkaler,Elissandra U.; Zeviani,Walmes; Freitas,Rilke T. F.
This study investigated the addition of antioxidants vitamin E and reduced glutathione on curimba (Prochilodus lineatus) semen cryopreservation and compared sodium bicarbonate solution and distilled water as activators. The experiment was conducted at the environmental station of CEMIG, in Itutinga-MG, Brazil, between December/2009 and January/2010. Semen samples (n = 7) with semen motility above 80% were diluted in cryoprotectant solutions composed of 10% methanol, 15% lactose and containing different concentrations of antioxidants: 50 (VE50), 100 (VE100) and 250 (VE250) µM of vitamin E, and 0.5 (RG0.5), 1.0 (RG1.0) and 1.5 (RG1.5) mM of reduced glutathione. A solution without antioxidants was used as a control. The semen was diluted at a ratio of 1:4...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidants; Fertilization; Freezing; Reproduction; Sperm motility.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300020

Preliminary study on hatching of rotifers (Brachionus plicatilis) and copepods (Cyclopoida): response to flooding and organic fertilisation
Provedor de dados: 20
Autores: Mwandya, A.W.; Kyewalyanga, M.S.; Valdenberg, A.
The effect of water flooding, organic fertiliser application and salinity manipulation in stimulating the hatching of rotifer resting eggs was investigated during the dry season (in August/September 1999) in simulation tanks and earthen ponds at Makoba, Zanzibar. The majority of hatched zooplankton included rotifers, identified as Brachionus plicatilis, and other zooplankton such as copepods and protozoa were present in small numbers. The number of rotifers hatched in simulation treatments with low salinity was higher than the values in treatments containing undiluted seawater. Up to 22 ± 1.5 (mean ± SE) rotifers/ml were counted in treatments with low salinity, whereas only a maximum of 13 ± 1. rotifers/ml were found in high-salinity treatments. On the...
Tipo: Journal Contribution
Palavras-chave: Eggs; Resting spores; Salinity; Flooding; Hatching; Eggs; Salinity; Fertilization; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_2863.
Ano: 2004
URL: http://hdl.handle.net/1834/1093

Aplicação de silicatos de cálcio e de potássio e o crescimento de mudas de Eucalyptus grandis
Provedor de dados: 190
Autores: Bognola, Itamar Antonio; Clasen, Lina Avila; Franciscon, Luziane; Gava, Jose Luiz; Dedecek, Renato Antonio; Silva, Fernando Márcio da.
O uso de silicato é uma prática que vem sendo adotada com frequência em culturas anuais, muito embora poucos trabalhos tenham sido realizados com intuito de verificar sua eficiência em espécies florestais arbóreas. O objetivo principal desta pesquisa foi avaliar o efeito da aplicação de silicatos de cálcio e de potássio no crescimento de mudas de Eucalyptus grandis. O experimento foi conduzido em casa de vegetação, no Município de Alambari, SP. O delineamento usado foi inteiramente ao acaso, com oito tratamentos, três repetições e 25 plantas por parcela, sendo mantidas na umidade de capacidade de campo. As mudas foram plantadas em tubetes de plástico, utilizando substrato local, com adubação básica e silicatos. Diâmetro de colo, altura e biomassa verde e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silício; Adubação; Nutrição florestal Silicon; Fertilization; Forest nutrition.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/150

Phosphate and potash fertilization on Acacia mearnsii De Wild. (Black wattle) plantation.
Provedor de dados: 190
Autores: Andrade, Guilherme de Castro; Bellote, Antonio Francisco Jurado; Ferreira, Carlos Alberto; Silva, Helton Damin da.
Acacia mearnsii is the third forest species more planted in Brazil, especially in small farms at Rio Grande do Sul State. The species is also known as black wattle and is important as a source of tannin, timber, pulpwood and rayon. Its fast growth results in high demand of nutrients and fertilization is necessary to keep site productivity. In this paper it is reported the results of the application of four doses of Phosphorous (0, 20, 40, 80g/tree as P2O5) and three of Potassium (0, 20, 40g/tree as K2O), in a factorial designed trial established on a chemically poor soil at the region of Ponta Grossa, State of Paraná, Brazil. Trees were implanted in a 3m X 2m spacing with 35 plants per plot. The fertilizers were applied in furrows between the rows at the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reforestation; Fertilization; Nutrients; Phosphorous; Potassium; Wood productivity Reflorestamento; Fertilização; Nutrientes; Fósforo; Potássio; Produtividade de madeira.
Ano: 2004
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1596

Effects of different spacings on heartof- palm production from peach-palm planted in the coastal region of the state Paraná – Brazil – 1ST Harvest
Provedor de dados: 190
Autores: Neves, Edinelson José Maciel; Santos, Álvaro Figueredo dos; Martins, Emerson Gonçalves; Ahrens, Sérgio; Kalil Filho, Antonio Nascim.
An experiment was established in Paranaguá, located in the costal region of the State of Paraná, in southern Brasil, in order to evaluate commercial yield of hearth-of-palm produced by Peach-Palm (Bactris gasipaes) established under the following four different initial spacings: T1 2x1m (5000 seedlings/ha); T2 3x1m (3333 seedlings/ha); T3 1,5x1x1m (8000 seedlings/ha); and T4 2x1x1m (6666 seedlings/ha). Mineral fertilizers (NPK) were applied at planting as well as subsequently. Results obtained by the time of the first cutting, 24 months after planting, allowed the following conclusions: a) the quantities of the NPK fertilizer used promoted changes in the chemical soil characteristics; b) commercial yield of hearth-of-palm improved as a function of stand...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil fertility; Fertilization; Commercial yield Fertilidade do solo; Adubação; Produção industrial.
Ano: 2003
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1619

Respostas morfofisiológicas entre procedências de canafístula submetidas a diferentes condições hídricas e nutricionais
Provedor de dados: 190
Autores: Carvalho, Rafael Pelloso de; Davide, Livia Maria Chamma; Gomes Borges, Felipe Luis; Davide, Antonio Claudio; Daniel, Omar.
O objetivo desse trabalho foi avaliar características morfofisiológicas entre diferentes procedências de canafístula (Peltophorum dubium) submetidas a ambientes distintos quanto à disponibilidade de água e nutrientes no solo. O experimento foi conduzido em casa de vegetação, em delineamento experimental inteiramente casualizado, com 12 tratamentos e quatro repetições, dispostos em esquema fatorial 3 (procedências) x 2 (adubações) x 2 (irrigações). Foram coletados dados de altura de plantas, diâmetro do colo e índice SPAD (soil plant analysis development) ao longo do experimento em intervalos de 15 dias. Ao final do experimento foi aferido o peso da matéria seca da parte aérea, de raízes e total, quociente entre matéria seca de parte aérea e matéria seca de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Recursos Florestais  Manejo Florestal; Genética Florestal Peltophorum dubium; Espécie florestal nativa; Adubação; Irrigação; Casa-de-vegetação Peltophorum dubium; Native tree species; Fertilization; Irrigation; Greenhouse.
Ano: 2015
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/889

Efeitos da adubação fosfatada e da aplicação de resíduo de celulose no crescimento de Eucalyptus dunnii
Provedor de dados: 190
Autores: Andrade, Guilherme de Castro; Silva, Helton Damin da; Bellote, Antonio Francisco Jurado; Ferreira, Carlos Alberto.
No Brasil, os plantios de árvores de rápido crescimento, principalmente espécies de Eucalyptus e de Pinus, representam uma oferta de milhares de empregos e significativa contribuição ao PIB. Do ponto de vista ambiental, contribuem para reduzir a pressão sobre as florestas nativas, concorrendo assim para a sua preservação e a dos recursos naturais nelas existentes. Esses povoamentos florestais, implantados na sua maioria em solos de baixa fertilidade, apresentam altas taxas de crescimento, necessitando de quantidades significativas de água e nutrientes do solo, o que causa preocupações com a sustentabilidade desses sistemas e com a necessidade de reposição futura de nutrientes. A utilização de resíduos para esta finalidade é considerada prioritária. Neste...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reflorestamento; Fertilização; Nutrientes; Fósforo; Produtividade de madeira Reforestation; Fertilization; Wastes; Nutrients; Phosphorous; Wood productivity.
Ano: 2003
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1607

Effect of phosphorus and potassium on yield and on agronomical characteristics of cotton
Provedor de dados: 86
Autores: Staut,Luiz Alberto; Athayde,Manoel Luiz Ferreira.
With the objective of studying the effect of increasing phosphorus and potassium doses on the agronomical and technological characteristics of the cotton (Gossypium hirsutum L.), cultivar IAC 20, an experiment was carried out during 1994/95 on a Red-Dark Latossol at the Embrapa-Centro de Pesquisa Agropecuária do Oeste (CPAO) in Ponta Porã, MS, Brazil. A randomized bloch design was used in a 3 x 5 factorial arrangement with four replications. The doses were 30, 60 and 90 kg ha-1 of P2O5, applied as triple superphosphate, and 0, 30, 60, 90 and 120 kg ha-1 of K2O as KCl. The K2O doses used had a significant influence on the seed cotton yield, plant height and weight of 100 seeds and of bolls.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macronutrient; Fertilization; Gossypium hirsutum.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999001000010

Phosphate fertilization with organomineral fertilizer on corn crops on a Rhodic Khandiudox with a high phosphorus contente
Provedor de dados: 86
Autores: Grohskopf,Marco André; Corrêa,Juliano Corulli; Fernandes,Dirceu Maximino; Benites,Vinícius de Melo; Teixeira,Paulo César; Cruz,Caio Vilela.
Abstract: The objective of this work was to evaluate the nutritional content and grain yield of three corn (Zea mays) crops in response to phosphate fertilization with an organomineral fertilizer based on poultry litter or a mineral fertilizer, when cultivated on a Rhodic Khandiudox with a high initial phosphorus content. The experiment was carried out in the field in a randomized complete block design in a 2×4+1 factorial arrangement (organomineral or mineral fertilizer × 20, 40, 60, or 80 kg ha-1 P + control treatment with no phosphate fertilization), with four replicates each. Available P and total organic carbon (TOC) contents in the soil at the end of the crop cycle, plant tissue P contents, and grain yield were determined. The agronomic efficiency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic efficiency; Fertilization; Mineral fertilizer; Organic waste.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103806

Use of diammonium phosphate on wheat grown in southwestern Buenos Aires (Argentina)
Provedor de dados: 85
Autores: Ron,MM; Loewy,T.
In the southwest of Buenos Aires Province (Argentina), nitrogen (N) and phosphorus (P) deficiencies are important wheat yield limiting factors. There is an information gap regarding differences between single element and binary N-P sources. The objective of this paper was to develop a general model for N-P fertilization in the area that also quantified diammonium phosphate (DAP) effect and its interactions with N-urea, applied at sowing or tillering, as compared with triple superphosphate (TSP). Between 1984 and 1985, 13 experiments were carried out in farmer&amp;#8217;s fields N. With the yield data for each experiment, a yield function was fitted which included terms for single effects of urea (0, 30 and 60 kg N/ha) and 80 kg/ha of either DAP or TSP....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Phosphorus sources; Models.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000100004

Private Forest Landowners’ Response to Incentives for Carbon Sequestration
Provedor de dados: 31
Autores: Kim,   Taeyoung; Langpap,   Christian.
Tipo: Presentation
Palavras-chave: Intermediate Forest Management; Carbon Sequestration; Incentive Payments; Price of Carbon; NIPF; Fuel Treatment; Fertilization; Environmental Economics and Policy; Farm Management; Land Economics/Use; Q23; Q54.
Ano: 2012
URL: http://purl.umn.edu/124362

Silicate fertilization of tropical soils: silicon availability and recovery index of sugarcane
Provedor de dados: 90
Autores: Camargo,Mônica Sartori de; Rocha,Gabriela; Korndörfer,Gaspar Henrique.
Sugarcane is considered a Si-accumulating plant, but in Brazil, where several soil types are used for cultivation, there is little information about silicon (Si) fertilization. The objectives of this study were to evaluate the silicon availability, uptake and recovery index of Si from the applied silicate on tropical soils with and without silicate fertilization, in three crops. The experiments in pots (100 L) were performed with specific Si rates (0, 185, 370 and 555 kg ha-1 Si), three soils (Quartzipsamment-Q, 6 % clay; Rhodic Hapludox-RH, 22 % clay; and Rhodic Acrudox-RA, 68 % clay), with four replications. The silicon source was Ca-Mg silicate. The same Ca and Mg quantities were applied to all pots, with lime and/or MgCl2, when necessary. Sugarcane was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cultivar; Nutrition; Fertilization; Monocotyledons.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500016

Brachiaria sp yield and nutrient contents after nitrogen and sulphur fertilization
Provedor de dados: 90
Autores: Heinrichs,Reges; Grano,Fernanda Grecco; Bueno,Leda Gobbo de Freitas; Soares Filho,Cecílio Viega; Fagundes,Jailson Lara; Rebonatti,Melina Daniel; Oliveira,Katia de.
Among the production factors, adequate fertilization is an important tool to raise the productivity of pastoral systems and consequently increase the share of Brazil in the supply chain of primary agricultural products at the global level. The objective of this study was to evaluate the interaction of nitrogen and sulfur fertilization in BRACHIARIA DECUMBENS: Stapf. The experiment in pots with Dystrophic Oxisol was evaluated in a completely randomized design with four replications in a 5 x 3 factorial arrangement, involving five N doses (0, 100, 200, 400, and 800 mg dm-3) in the form of ammonium nitrate and three S doses (0, 20 and 80 mg dm-3) in the form of calcium sulfate, with a total of 15 treatments. In the treatments with low S dose, calcium was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Brachiaria decumbens; Plant nutrition; Forage plants.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400017

Soil phosphorus availability and soybean response to phosphorus starter fertilizer
Provedor de dados: 90
Autores: Rosolem,Ciro Antonio; Merlin,Alexandre.
Phosphorus fixation in tropical soils may decrease under no-till. In this case, P fertilizer could be surface-spread, which would improve farm operations by decreasing the time spend in reloading the planter with fertilizers. In the long term, less soluble P sources could be viable. In this experiment, the effect of surface-broadcast P fertilization with both soluble and reactive phosphates on soil P forms and availability to soybean was studied with or without fertilization with soluble P in the planting furrow in a long-term experiment in which soybean was grown in rotation with Ruzigrass (Brachiaria ruziziensis). No P or 80 kg ha-1 of P2O5 in the form of triple superphosphate or Arad reactive rock phosphate was applied on the surface of a soil with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Brachiaria ruziziensis; Phosphates; Soil fertility.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500014

Sulfur in agriculture
Provedor de dados: 90
Autores: Lucheta,Adriano Reis; Lambais,Marcio Rodrigues.
Sulfur (S) deficiency in soils is becoming increasingly common in many areas of the world as a result of agronomic practices, high biomass exportation and reduced S emissions to the atmosphere. In this review, the incidence and commercial exploitation of S pools in nature are discussed, as well as the importance of S for plants and the organic and inorganic S forms in soil and their transformations, especially the process of microbiological oxidation of elemental sulfur (S0) as an alternative to the replenishment of S levels in the soil. The diversity of S0-oxidizing microorganisms in soils, in particular the genus Thiobacillus, and the biochemical mechanisms of S0 oxidation in bacteria were also addressed. Finally, the main methods to measure the S0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Agriculture; Microbial diversity; Soil fertility.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500001

Recovery of degraded pasture in Rondônia: macronutrients and productivity of brachiaria brizantha
Provedor de dados: 90
Autores: Noronha,Norberto Cornejo; Andrade,Cristiano Alberto de; Limonge,Fernando Célio; Cerri,Carlos Clemente; Cerri,Carlos Eduardo Pellegrino; Piccolo,Marisa de Cássia; Feigl,Brigitte Josefine.
Pasture is the main form of land use in Amazonia. Over time the pasture grass loses vigor and yields decrease, indicating a certain degree of degeneration. The main causes of degradation are lack of pasture maintenance and subsequent weed infestation, the choice of regionally unsuitable forage species and excessive grazing. The main purpose of this study was to evaluate the impact of different recovery managements on soil chemical properties and grass yield of a degraded pasture in Rondônia. For this purpose, an experiment was installed in October 2001, consisting of five treatments: C = control; HA = harrowing + NPK + micronutrients; HE = Herbicide + NK + micronutrients; R = No-tillage rice + NPK + micronutrients; and S = No-tillage soybean + PK +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pasture rehabilitation; Soil; Fertilization; Phosphorus; Phosphate.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500023

Nutrient relations during an eucalyptus cycle at different population densities
Provedor de dados: 90
Autores: Leite,Fernando Palha; Silva,Ivo Ribeiro; Novais,Roberto Ferreira; Barros,Nairam Félix de; Neves,Júlio César Lima; Villani,Ecila Mercês de Albuquerque.
To synchronize nutrient availability with the requirements of eucalyptus during a cultivation cycle, the nutrient flow of this system must be well understood. Essential, for example, is information about nutrient dynamics in eucalyptus plantations throughout a cultivation cycle, as well as impacts on soil nutrient reserves caused by the accumulation and subsequent export of nutrients via biomass. It is also important to quantify the effect of some management practices, such as tree population density (PD) on these fluxes. Some nutrient relations in an experiment with Eucalyptus grandis, grown at different PDs in Santa Barbara, state of Minas Gerais, Brazil, were evaluated for one cultivation cycle. At forest ages of 0.25, 2.5, 4.5, and 6.75 years,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Tree spacing; Sustainability; Fertilization.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300029

Alterations of soil chemical properties by eucalyptus cultivation in five regions in the Rio Doce Valley
Provedor de dados: 90
Autores: Leite,Fernando Palha; Silva,Ivo Ribeiro; Novais,Roberto Ferreira; Barros,Nairam Félix de; Neves,Júlio César Lima.
Little is currently known about modifications in edaphic characteristics caused by short-rotation eucalyptus and the impacts of these alterations on the sustainability of eucalyptus wood production. This study was carried out to identify theses changes at five sites of eucalyptus plantation in the region of the Rio Doce Valley, state of Minas Gerais, Brazil. Areas with more than three previous eucalyptus cycles, adjacent to pasture land or native forest, were chosen. Soil samples were collected and soil fertility analyzed by routine methods and other fractionation methods in order to measure alterations in the K, Ca and Mg contents as a consequence of eucalyptus cultivation. In the eucalyptus areas, reductions in the exchangeable Ca2+, Mg2+ and K+ contents...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exchangeable cations; Fertilization; Nutrient exhaustion; Nutrient reserves.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300024

Potassium Fertilization of Eucalyptus in an Entisol in Low-Elevation Cerrado
Provedor de dados: 90
Autores: Gazola,Rodolfo de Niro; Buzetti,Salatiér; Teixeira Filho,Marcelo Carvalho Minhoto; Gazola,Raíssa Pereira Dinalli; Celestrino,Thiago de Souza; Silva,Alexandre Costa da; Silva,Paulo Henrique Müller da.
ABSTRACT Potassium (K) is one of the most highly accumulating nutrients in Eucalyptus and, consequently, is heavily exported by the harvesting of wood. Moreover, its availability in the soil in most Brazilian plantation areas is very low, especially in the regions of the Cerrado biome, which has soils with low natural fertility and marked water deficits, implying a lack of nutrient supply and, consequently, a less efficient water use. Our objective was to evaluate the effects of K fertilization on Eucalyptus biomass yield, the addition of nutrients to the soil by leaf deposition, nutrient use efficiency, and soil K availability. The experiment was conducted with clone I144 (Eucalyptus urophylla) in the municipality of Três Lagoas/MS, in a Neossolo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Senescent leaf nutrients; Fertilization; Biomass; Macronutrients; Nutritional efficiency.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100505

Characterization of Ornamental Rock Residue and Potassium Liberation Via Organic Acid Application
Provedor de dados: 90
Autores: Machado,Ramires Ventura; Andrade,Felipe Vaz; Passos,Renato Ribeiro; Ribeiro,Roberto Carlos da Conceição; Mendonça,Eduardo Sá; Mesquita,Luiz Felipe.
ABSTRACT Organic acids present in organic matter and, or, exudates by microorganisms and plants can increase the liberation of potassium present in minerals. The objective of this study was to characterize the residue from ornamental rocks and evaluate the release of K from these residues after the application of organic acids. The experiment was conducted under laboratory conditions and followed a 2 × 3 × 5 factorial design with three replicates. The studied factors were: two organic acids (citric acid and malic acid), three ornamental rock residues (R1, R2 and R3) and five organic acid rates (0, 5, 10, 20 and 40 mmol L-1). After agitation, K concentrations were determined in the equilibrium solution. Successive extractions were performed (1, 5, 10, 15,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stonemeal; Fertilization; Citric acid; Silicate rocks.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100505

Effect of NPK fertilization on production and leaf nutrient content of eucalyptus minicuttings in nutrient solution
Provedor de dados: 90
Autores: Carvalho Neto,José Pereira; Silva,Enilson de Barros; Santana,Reynaldo Campos; Grazziotti,Paulo Henrique.
Adequate nutrient levels in plants vary according to the species or clone, age and management practice. Therefore, adjustments of the nutrient solution are often necessary according to the plant material for multiplication. This study aimed to evaluate the influence of NPK fertilization on production and leaf nutrient contents of eucalyptus cuttings in nutrient solution. The study was conducted from November 2008 to January 2009 in a greenhouse. The experimental design was completely randomized fractional factorial (4 x 4 x 4)½, with a total of 32 treatments with three replications. The treatments consisted of four doses of N (50, 100, 200 and 400 mg L-1) as urea, P (7.5, 15, 30 and 60 mg L-1) in the form of phosphoric acid and K (50, 100, 200 and 400 mg...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Eucalyptus; Fertilization; Clonal nursery.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000100023

Sampling Layer for Soil Fertility Evaluation in Long-Term No-Tillage Systems
Provedor de dados: 90
Autores: Vieira,Renan Costa Beber; Fontoura,Sandra Mara Vieira; Bayer,Cimélio; Ernani,Paulo Roberto; Anghinoni,Ibanor; Moraes,Renato Paulo de.
ABSTRACT In no-tillage (NT) systems, there is no plowed layer since the soil is not tilled. Thus, the soil layer for fertility evaluation can be defined as the one in which the fertility indices are affected by the surface application of lime and fertilizers and soil properties have the closest relationship with crop yields. The objective of this study was to determine the most appropriate soil layer under long-term NT for sampling for fertility evaluation in the South-Central region of Paraná, Brazil. A total of 99 field experiments of crop rotations were performed, including soybean, corn, barley, wheat, and white oat, all on Oxisols (Hapludox). Despite the surface application, lime and fertilizers increased base saturation (V) and available K to a depth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diagnostic layer; Liming; Fertilization; Soil sampling.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100542

Physical and chemical changes in soil fertilized with poultry manure with and without chiseling
Provedor de dados: 91
Autores: Eguchi,Edson S.; Cecato,Ulysses; Muniz,Antonio S.; Mari,Gracielle C.; Murano,Raphael A. C.; Sousa Neto,Eurico L. de.
ABSTRACT Poultry manure and mechanical management may influence the distribution of nutrients in the soil profile. The objective was to evaluate physical and chemical changes in a soil with palisade grass ( Brachiaria brizantha cv. Marandu) fertilized with doses of poultry manure with and without use of soil chiseling, after 180 days of application. The design was a randomized blocks with four replicates, in a 5 x 2 factorial arrangement with five doses of manure (0, 1.073, 2.074, 4.148 and 6.222 Mg ha-1), with and without soil chiseling at 0.20 m. Soil chiseling caused physical changes with an increase of macroporosity in the layer of 0-0.2 m and reduction in soil density and increase in macroporosity and total porosity in the layer of 0.2-0.4 m. With...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Palisade grass; Fertilization; Forage cultivation; Residue.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400316

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

Potassium leaching in different soils as a function of irrigation depths
Provedor de dados: 91
Autores: Mendes,Walter da C.; Alves Júnior,José; Cunha,Paulo C. R. da; Silva,Anderson R. da; Evangelista,Adão W. P.; Casaroli,Derblai.
ABSTRACT Potassium (K) can be easily lost by the leaching process. The objective of this study was to quantify K leaching in clayey and sandy soils under increasing irrigation depths. The experiment was conducted in 2014, in a protected environment, after extraction of undisturbed soil columns, with diameter of 144 mm and height of 300 mm. The columns were arranged in a randomized complete block in a factorial design with three replicates, corresponding to eight treatments: two soil types and four water depths, equivalent to 50, 100, 150 and 200% of the amount of water necessary to bring the soil moisture to field capacity. Potassium chloride, with 58% of K2O, was used as K source. Water replacement in the columns was performed every three days, for a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Soil texture; Nutrient loss; Water management.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001100972

Accumulation of macronutrients in different parts of sunflower fertilized with cassava wastewater
Provedor de dados: 91
Autores: Dantas,Mara S. M.; Rolim,Mario M.; Pedrosa,Elvira M. R.; Bezerra Neto,Egídio; Silva,Gerônimo F. da; Silva,Ênio F. de F. e.
ABSTRACT The utilization of organic wastes in agriculture is an alternative that can reduce the amounts of mineral fertilizers applied to the soil. The aim of this study was to evaluate the accumulation of macronutrients in sunflower cv. 'Hélio 250' fertilized with cassava wastewater. The experiment was conducted in randomized block design, with six treatments (0; 8.5; 17; 34; 68 and 136 m3 ha-1 of cassava wastewater) and four replications. The accumulation of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) and sulfur (S) were evaluated in leaves, stem, capitulum and achenes. The cassava wastewater dose of 136 m3 ha-1 promoted the greatest accumulation of all evaluated nutrients. The pattern of macronutrients accumulation occurred...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus; Nutrition; Fertilization; Residue; Manihot esculenta.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000700630

Productive and chemical characteristics of Marandu grass in response to poultry manure and soil chiseling
Provedor de dados: 91
Autores: Eguchi,Edson S.; Cecato,Ulysses; Muniz,Antonio S.; Oliveira,Carlos A. L. de; Murano,Raphael A. C.; Pierangeli,Maria A. P.
ABSTRACT The objective of this study was to evaluate the productive and chemical characteristics of Marandu grass fertilized with poultry manure with or without the use of soil chiseling, during a period of 210 days. The experiment was conducted in a Dark-Red Latosol (Haplustox) of sandy texture, in a randomized block design with 4 replicates, in a 6 x 2 factorial scheme (0, 1.037, 2.074, 4.148, 6.222 t ha-1 of poultry manure and an additional treatment with chemical fertilizer based on 2.074 t ha-1, with and without soil chiseling). Grass-cutting management was performed between 95% of light interception by the canopy and the residual height of 0.15 m. The application of poultry manure resulted in an increase of forage production with higher number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Brachiaria; Nutrient; Sustainability.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000600527

Soybean agronomic performance in response to seeding rate and phosphate and potassium fertilization
Provedor de dados: 91
Autores: Ferreira,André S.; Balbinot Junior,Alvadi A.; Werner,Flávia; Franchini,Júlio C.; Zucareli,Claudemir.
ABSTRACT Most studies that found soybean high phenotypic plasticity under different seeding rates adopted the same fertilization levels used for the recommended seeding rates. Therefore, the interaction between these factors is little known. This study aims to assess the interaction between seeding rate and levels of phosphorus and potassium fertilization on soybean growth, grain yield and contents of protein and oil in the grains. The experiment was carried out under a randomized complete block design, in a split-plot scheme, with six replicates. Four seeding rates (150, 300, 440 and 560 thousand viable seeds ha-1) were used in the plots, and two levels of phosphorus and potassium fertilizer were applied in the subplots to meet the export of 3 and 6 t...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max (L.) Merrill; Plant spatial arrangement; Fertilization; Plant density.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300151

Nitrogen and potassium fertilization in yield and macronutrients contents of heliconia cv. Golden Torch
Provedor de dados: 91
Autores: Beckmann-Cavalcante,Márkilla Z.; Amaral,Genilda C.; Silva,Alcimar de S. e; Brito,Leonardo P. da S.; Lima,Augusto M. N.; Cavalcante,Ítalo H. L.
ABSTRACT This study aimed to evaluate the effect of nitrogen (N) and potassium (K) fertilization in yield and contents of macronutrients in heliconia plants (Heliconia psittacorum x Heliconia spathocircinata Aristeguieta) cv. Golden Torch. The experiment was set in a randomized block design, in a 4 x 4 factorial, corresponding to N doses (0, 120, 180 and 240 g of N hole-1) and K doses (0, 120, 180 and 240 g of K2O hole-1) with four replicates and five rhizomes per plot, under field conditions. After one year of cultivation, yield (number of flower stems per square meter) and the leaf contents of N, P, K, Ca, Mg and S were determined. The applied N doses did not influence either yield or the leaf contents of the evaluated macronutrients. K fertilization...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heliconia psittacorum; Floriculture; Fertilization; Nutritional status.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400337

Water salinity, nitrogen and phosphorus on photochemical efficiency and growth of west indian cherry
Provedor de dados: 91
Autores: Sá,Francisco V. da S.; Gheyi,Hans R.; Lima,Geovani S. de; Paiva,Emanoela P. de; Moreira,Rômulo C. L.; Silva,Luderlândio de A.
ABSTRACT The objective of this study was to evaluate the interaction between water salinity and doses of nitrogen and phosphorus on chlorophyll a fluorescence and on the growth of West Indian Cherry (‘acerola’) plants in the initial growth stage. The research was carried out in a protected environment, in lysimeters filled with Regolithic Neosol of loamy clay texture and low initial phosphorus content. The experiment was conducted in a randomized block design, arranged in a factorial scheme with two factors, five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.4, 2.2, 3.0 and 3.8 dS m-1) and four proportions of the recommendation of phosphorus/nitrogen - P/N (100:100, 140:100, 100:140 and 140:140% P/N of recommendation), with three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyll fluorescence; Saline stress; Fertilization; Malphigia emarginata.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300158

Mineral nutrition evolution in the formation of fruit tree rootstocks and seedlings
Provedor de dados: 94
Autores: Natale,William; Lima Neto,Antonio João de; Rozane,Danilo Eduardo; Parent,Léon Etienne; Corrêa,Márcio Cleber de Medeiros.
Abstract  The importance of mineral nutrition to the various plant species has been recognized for many years. Since nutrients are directly linked to physiological and metabolic processes, they promote the growth of rootstocks and seedlings, contributing to the formation of more productive orchards. As a consequence of the lack of technical information for most fruit trees, fertilization in nurseries has still been carried out empirically, sometimes underestimating or overestimating nutritional requirements and compromising the quality of plants produced. Given the importance of mineral nutrition in the formation of high-quality seedlings and the lack of scientific information on the topic, the aim of the present review was to raise interest in further...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nurseries; Fertilization; Nutritional diagnosis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000604001

STIGMATIC RECEPTIVITY AND POLLEN VIABILITY OF Theobroma subincanum Mart.:FRUIT SPECIES FROM THE AMAZON REGION
Provedor de dados: 94
Autores: ARENAS-DE-SOUZA,MAICON DOUGLAS; ROSSI,ANA APARECIDA BANDINI; VARELLA,TATIANE LEMOS; SILVEIRA,GREICIELE FARIAS DA; SOUZA,SÉRGIO ALESSANDRO MACHADO.
ABSTRACT  Theobroma subincanum (cupuí) is a fruit species native to the Amazon region. Fruits are enjoyed by local people and consumed both as fresh fruit such as juice, nectar or soft drinks. Reproductive biology studies provide contributions to conservation strategies and plant improvement. The present study aimed to analyze the stigmatic receptivity and pollen viability of T. subincanum. This study was developed in a forest fragment located in the urban perimeter of the municipality of Alta Floresta, MT. In the flowering period, flower buds or flowers were collected in seven different times, as follows: 10 pm, 02 am, 06 am, 10 am, 2 pm, 6 pm, and 10 pm. Pollen viability was estimated by reactive Alexander (1969) and stigmatic receptivity using 3%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cupui; Pollen; Fertilization; Fructification; Floral biology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400201

Boron fertilizing management on fruit production and quality of mango cv. Palmer in semiarid
Provedor de dados: 94
Autores: Oldoni,Fernanda Campos Alencar; Lima,Augusto Miguel Nascimento; Cavalcante,Ítalo Herbert Lucena; Sousa,Karla dos Santos Melo de; Carneiro,Marcio Alves; Carvalho,Itamara Rayanny Bessa de.
Abstract  Adequate fertilizing management is crucial to reach high mango yields that demand a well-defined fertilizer management, including micronutrient such as boron which management is more difficult due to the narrow range between deficiency and toxicity. This way, an experiment was carried out to evaluate the fruit production and quality of mango cv. Palmer as a function of boron fertilizing management in Brazilian semiarid. The experimental design was in randomized blocks with six treatments (strategies for boron fertilizing), as follows: T1 = five sprays with H3BO3 (two first at 0.3% and three at 0.2%); T2 = five sprays with H3BO3 (two first at 0.3% and three at 0.4%); T3 = five sprays with H3BO3 (two first at 0.3% and three at 0.6%); T4 = two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mangifera indica L.; Fertilization; Fertirrigation; Boron.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000303002

Fruit size and quality of pineapples cv. Vitória in response to micronutrient doses and way of application and to soil covers
Provedor de dados: 94
Autores: Amorim,Aiala Vieira; Lacerda,Claudivan Feitosa de; Moura,Carlos Farley Herbster; Gomes Filho,Enéas.
The objective of this study was to evaluate the effects of foundation and leaf fertilization with micronutrients on fruit size and quality of pineapple cv. Vitória under the environmental conditions of the Baixo Acaraú irrigated perimeter in Northern Ceará State, Brazil, under two covers (bagana and black plastic) of the sandy soil of low fertility. The experimental design was a randomized split blocks one with four levels of soil dressing and four levels of foliar fertilization, with five replications. Micronutrient soil dressing was studied as FTE-12 at doses of 0, 60, 120 and 180 kg ha-1. The four levels of foliar fertilization were: LF0 (without fertilizer), LF 1 (15 leaf fertilization, using the amount of 1158.75 g Fe ha-1, 844.65 g Mn ha-1, 391.5 g...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus comosus; Fertilization; Soluble solids; Titratable acidity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000500068

Zn and K influence in fruit sizes of Valencia orange
Provedor de dados: 94
Autores: Rodríguez,Víctor Antonio; Mazza,Silvia Matilde; Martínez,Gloria Cristina; Ferrero,Abel René.
In orange commercial farms, Zn deficiencies symptoms and small fruits were observed in Corrientes, Argentine. During four years (1995 to 1998), Valencia orange (Citrus sinensis Osb.) on Rough lemon (C. jambhiri Lush.) rootstock, implanted in 1974 in sandy soil, where six treatments were tested. Treatments varied from 1 to 3 Kg KCl.tree-1.year-1 (applied in April and December) with and without Zineb 80, 0,35%. year-1, 20 L. tree-1 (13,3 g Zn.tree-1 applied in December). The experimental design was a randomized complete block with four replications, with a single tree and borders in the experimental plot. Foliar sample were taken every year in Autumn and Summer, foliar concentrations of Zn and K were determined by atomic spectrum absorption. Harvested fruits...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Citrus sinensis; Valencia orange productivity.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452005000100035

Morphogenesis of Tanzania guinea grass under nitrogen doses and plant densities
Provedor de dados: 96
Autores: Braz,Thiago Gomes dos Santos; Fonseca,Dilermando Miranda da; Freitas,Fabrício Paiva de; Martuscello,Janaina Azevedo; Santos,Manoel Eduardo Rozalino; Santos,Márcia Vitória; Pereira,Vinícius Valim.
The objective of this work was to evaluate effects of nitrogen fertilization and plant density on morphogenesis of Tanzania guinea grass. It was used a random block design with 12 treatments and two replications in a 4 × 3 factorial arrangement, with four doses of nitrogen (N) (without N application, 80, 160 or 320 kg/ha.year) and three plant densities (9, 25 or 49 plants/m²). Harvest was performed at 25 cm from the ground when the canopy intercepted 95% of the incident light. Rates of leaf appearance and pseudostem elongation were positively and linearly influenced by nitrogen, whereas phillochron and leaf life span were influenced linearly and negatively. Leaf elongation responded positively to two factors, whereas leaf senescence rate and number of live...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Light interception; Morphogenetic characteristics; Structural characteristics; Panicum maximum.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700004

Forage yield and nutritive value of Tanzania grass under nitrogen supplies and plant densities
Provedor de dados: 96
Autores: Freitas,Fabrício Paiva de; Fonseca,Dilermando Miranda da; Braz,Thiago Gomes dos Santos; Martuscello,Janaina Azevedo; Santos,Manoel Eduardo Rozalino.
The objective of this experiment was to evaluate the nitrogen and plant density influence on the yield, forage dissection and nutritive value of Tanzania grass (Panicum maximum Jacq.). The design was of completely randomized blocks with three replications in a factorial arrangement with four nitrogen levels (0, 80, 160 or 320 kg/ha N) and three plant densities (9, 25 or 49 plants/m²). The plots were cut at 25 cm from soil level when the canopy reached 95% of light interception. The total dry matter forage yield and dry matter forage yield per harvest increased linearly with the nitrogen fertilization. The leaf and stem yield had the same response. The senesced forage yield was quadratically influenced by the nitrogen. The stems ratio in the morphologic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Forage dissection; Intermittent stocking; Light interception; Panicum maximum; Pasture management.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400006

Morphogenetic traits and biomass accumulation of Brachiaria brizantha cv. Xaraés subjected to nitrogen doses
Provedor de dados: 96
Autores: Cabral,Welton Batista; Souza,Alexandre Lima de; Alexandrino,Emerson; Toral,Fábio Luiz Buranelo; Bonelli,Emerson Alencar; Lima,Leni Rodrigues de.
The objective of this experiment was to evaluate the morphogenetic traits and biomass accumulation of Brachiaria brizantha cv. Xaraés subjected to doses of N (0, 125, 250, 375 and 500 kg.ha-1 N). The treatments were arranged in a completely randomized design with four replications. Morphogenetic traits and biomass accumulation of dry matter (DM).ha-1 were evaluated. The results were subjected to statistical analysis by grouping the data in two periods, rainy season and throughout the year. Nitrogen doses influenced leaf appearance in the rainy season and throughout the year, with significant increase in leaf elongation during the rainy season, an increase of 56% compared with control. During this period, maximum dose of N (248.1 kg.ha-1) produced 214.49...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Leaf appearance; Morphogenesis; Pastures.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800002

Biomass components in Massai grass during establishment and regrowth under five nitrogen fertilization levels
Provedor de dados: 96
Autores: Lopes,Marcos Neves; Cândido,Magno José Duarte; Pompeu,Roberto Cláudio Fernandes Franco; Silva,Rodrigo Gregório da; Lopes,José Wellington Batista; Bezerra,Francisco Marcus Lima.
To evaluate biomass components of Massai grass under five doses of N (0, 150, 300, 450 and 600 mg N/dm³ soil) during three cycles of growth (establishment, regrowth 1 and regrowth 2) this study was carried out. The experiment was carried out in a greenhouse, in a completely randomized design with measures repeted over time and five replications. In the three cycles, nitrogen doses had increasing linear effect on green herbage dry matter (GHDM), green leaf dry matter (GLDM), on the tiller population density (TPD) and on forage density. Canopy height and foliage height were the highest ones in establishment of regrowth 2, respectively, and they decreased at the highest doses of nitrogen. Irrigation depth was the greatest at the highest doses and in regrowth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Forage dry matter; Panicum maximum.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000800002

Accumulation and export of nutrients in cactus pear cladodes (Opuntia ficus-indica) under different managements in the Brazilian Semiarid
Provedor de dados: 96
Autores: Lopes,Marcos Neves; Cândido,Magno José Duarte; Silveira,Walisson Marques; Maranhão,Theyson Duarte; Soares,Ismail; Pompeu,Roberto Cláudio Fernandes Franco; Silva,Rodrigo Gregório da; Carneiro,Maria Socorro de Souza.
ABSTRACT The present study evaluated the accumulation and export of nutrients in cactus pear (Opuntia ficus-indica) cv. Gigante, fertilized with combinations of nitrogen (10, 70, 100, 130, and 190 kg ha−1 year−1 N) and phosphorus (10, 70, 100, 130, and 190 kg ha−1 year−1 P2O5) under annual and biennial harvests, in Quixadá and Tejuçuoca, using a split-plot randomized block design with four replications. In Quixadá, under annual and biennial harvests, the following orders of accumulation of macronutrients (in kg ha−1 year−1) were found, respectively: K (98.8) &gt; Ca (87.2) &gt; N (46.7) &gt; Mg (26.8) &gt; S (18.4) &gt; P (2.04) and Ca (33.5) &gt; K (31.1) &gt; S (18.6) &gt; N (12.9) &gt; Mg (10.5) &gt; P (0.81). In Tejuçuoca, under annual and biennial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Harvest frequency; Nutritional demand.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100301

Polyculture of Litopenaeus vannamei shrimp and Mugil platanus mullet in earthen ponds
Provedor de dados: 96
Autores: Costa,Léa Carolina de Oliveira; Xavier,João Antônio Amaral; Neves,Luis Fernando de Matos; Azambuja,Ana Maria Volkmer de; Wasielesky Junior,Wilson; Figueiredo,Mario Roberto Chim.
The objective of the present study was to evaluate the growth performance of the shrimp Litopenaeus vannamei and the mullet Mugil platanus in earthen ponds (200 m²) located in the Laboratory of Continental Aquaculture of Universidade Federal do Rio Grande (FURG), in both polyculture and monoculture systems. The study consisted of three replicates, as follows: shrimp monoculture (SM), shrimp and mullet polyculture (PO) and mullet monoculture (MM). The stocking density was 10 post-larvae shrimp (PL) m−2 and 0.67 mullet m−2. Fish and shrimp were fed commercial shrimp meal (38% crude protein) once a day. Initially, the amount of feed to shrimp was 20% of their total biomass which was later reduced to 5%. Mullets were fed at 5% of their stocked biomass. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estuarine aquaculture; Fertilization; Multitrophic aquaculture; Mugilidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900001

Boric acid in germination of pollen grains and fruit set of peach cultivars in subtropical region
Provedor de dados: 124
Autores: Souza,Filipe Bittencourt Machado de; Pio,Rafael; Tadeu,Maraísa Hellen; Zambon,Carolina Ruiz; Gregory,L. Reighard.
ABSTRACT The pollination and fertilization process directly affects the crop yield of peach. Previous studies have shown that some cultivars lack consistent cropping (yield variation) in subtropical regions. The application of boric acid at flowering can minimize this problem. This study quantified the germination of pollen grains and fruit set on 18 cultivars of peach in a subtropical region when treated with boric acid at bud. The initial spray treatments were three concentrations of boric acid (400 mgL-1, 800 mgL-1 and 1,200 mgL-1) plus a control treatment of water. Treatments were sprayed on the shoots when the flower buds were flower bud swelling on early maturing cultivars Aurora 2 and Doçura 2. There is a cultivar difference where 'Aurora 2' had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Pollination; Fertilization; Boron.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300496

Oat grain yield under nitrogen uses in an eucalyptus intercropping system in Subtropical Brazil
Provedor de dados: 124
Autores: Deiss,Leonardo; Moraes,Anibal de; Pelissari,Adelino; Silva,Vanderley Porfírio da; Andreolla,Veruschka Rocha Medeiros.
ABSTRACT Agronomic practices adequacy plays a key role in the integrated crop-livestock systems development. The objective of this study was to determine how the phytomass accumulation, yield compounds and oat (Avena sativa L. cv. IPR 126) yield were influenced by nitrogen levels (12 and 80 kg N ha-1) at five equidistant positions between two adjacent eucalyptus (Eucalyptus dunnii Maiden) double line tracks [20 m (4 m x 3 m)] in intercropping system (IS) and traditional no-till agriculture (without trees) in subtropical Brazil. The experiment was conducted in a split-block in a randomized block design with four replicates. At the end of the oat cycle, there was compensation for the lower spikelets per panicle number by the greater grain per spikelet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Interspecific competition; Lodging; Small cereal.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300462

Biomass flow and water efficiency of cactus pear under different managements in the Brazilian Semiarid
Provedor de dados: 124
Autores: Lopes,Marcos Neves; Cândido,Magno José Duarte; Gomes,Ellen da Costa; Pompeu,Roberto Cláudio Fernandes Franco; Silva,Rodrigo Gregório da.
ABSTRACT Balanced fertilization is an important factor in optimizing the growth and productivity of crops. This study aimed to evaluate biomass flow and rain use efficiency in cactus pear cv. Gigante fertilized with combinations of nitrogen (10; 70; 100; 130 and 190 kg ha-1 year-1 N) and phosphorus (10; 70; 100; 130 and 190 kg ha-1 year-1 P2O5), in two harvest frequencies (annual and biennal), in the regions of Quixadá and Tejuçuoca, in Ceará. This was a split-plot randomized block design, with four replicates. In Quixadá and Tejuçuoca, the N and P combinations and harvest frequencies influenced the productions rates of different cladode orders and rain use efficiency in cactus pear. In Quixadá, in the annual harvest, the forage production rate (FPR) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Rain use efficiency; Opuntia fícus-indica; Forage production rate.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200324

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

Corn production for silage in nitrogen and potassium levels in covering fertilization
Provedor de dados: 22
Autores: Neumann, Mikael; Horst, Egon Henrique; Dochwat, André; Leão, Guilherme Fernando Mattos; Carneiro, Murilo klosovski; Mello, Richard Paglia de.
The objective was to evaluate the productivity, morphological and chemical composition, in addition to the economic viability of the corn crop (Zea mays L.) for the production of silage under different levels of nitrogen and potassium fertilization in coverage. Treatments consisted of four coverage levels: T1 (217 kg ha-1 N + 137 kg ha-1 K2O); T2 (295 kg ha-1 N + 163 kg ha-1 K2O); T3 (374 kg ha-1 N + 190 kg ha-1 K2O); and T4 (452 ​​kg ha-1 N + 216 kg ha-1 of K2O). It was found that the fertilization level had no effect (P&gt; 0.05) in the parameters related to plant height, height of the first insertion spike and grain production, however, higher (P &lt;0.05) dry biomass production was obtained with 374 kg ha-1 N + 190 kg ha-1 coverage K2O (32,346 kg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromatology; Physical composition; Fertilization; TDN; Green biomass production.
Ano: 2017
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/13706

Assisted reproductive techniques in small animals
Provedor de dados: 195
Autores: Lopes, Maria Denise.
The objective of this discussion is to bring information about some of the assisted reproductive techniques used in domestic animals, and the impact of this technology on reproduction of dogs and cats.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spermatozoa; Oocytes; Fertilization; Reproductive techniques espermatozóide; Oócito; Fertilização; Técnicas reprodutivas; Cão; Gato.
Ano: 2001
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3341

Nutrient cycling in a RRIM 600 clone rubber plantation
Provedor de dados: 63
Autores: Murbach,Marcos Roberto; Boaretto,Antonio Enedi; Muraoka,Takashi; Souza,Euclides Caxambu Alexandrino de.
Few reports have been presented on nutrient cycling in rubber tree plantations (Hevea brasiliensis Muell. Arg.). This experiment was carried out to evaluate: the effect of K rates on the amount of nutrients transfered to the soil in a 13-year old Hevea brasilensis RRIM 600 clone plantation, nutrient retranslocation from the leaves before falling to the soil, and nutrient loss by dry rubber export. The experiment started in 1998 and potassium was applied at the rates of 0, 40, 80 and 160 kg ha-1 of K2O under the crowns of 40 rubber trees of each plot. Literfall collectors, five per plot, were randomly distributed within the plots under the trees. The accumulated literfall was collected monthly during one year. The coagulated rubber latex from each plot was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Litterfall; Fertilization; Nutrition; Rubber; Nutrient exportation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200021

Nitrogen fertilizer split-application for corn in no-till succession to black oats
Provedor de dados: 63
Autores: Ceretta,Carlos Alberto; Basso,Claudir José; Diekow,Jeferson; Aita,Celso; Pavinato,Paulo Sérgio; Vieira,Frederico Costa Beber; Vendrusculo,Edson Rodrigo Oliveira.
The studies of fertilization splitting are necessary specially for the grass succession black oat-corn where N immobilization is very common. Four experiments were carried out in commercial farms under no-tillage, in four counties - Itaara, Santo Ângelo, Júlio de Castilhos and Tupanciretã, all of Rio Grande do Sul, Brazil, with the objective of evaluating the splitting of N application in a corn/black oat crop rotation, during the 97/98 and 98/99 cropping seasons. The N was applied at three times -- pre-planted, starter and sidedressed. The pre-planted applied N for corn, corresponding to total or partial rates that would be sidedressed presented similar results in relation to the sidedress application, however, years of above average rainfall presented N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cultural successions; Mineral nitrogen; Fertilization.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000300021

Spatial variability of soil phosphorus of a low productivity Brachiaria brizantha pasture
Provedor de dados: 63
Autores: Corazza,Edemar Joaquim; Brossard,Michel; MuraokaI,Takashi; Coelho Filho,Maurício Antonio.
Studies on soil phosphorus (P) of low productivity cultivated pastures in Cerrado (Brazilian Savanna) areas and surveys on other possible problems related to P are scarce. The spatial variability of soil phosphorus content of a Rhodic Ferralsol was studied in a low productivity pasture of Brachiaria brizantha (BB) grown for 10 years, without fertilizer application, in an experimental area at Planaltina (GO), Brazil. Soil samplings were performed on a regular grid of 10 by 10 meters, with 98 sampling points before (between tussocks and under tussocks) and after the establishment of the experiment (after fertilizing). On the same grid, forage plants were collected and separated into fractions for N and P content analyses. Soil available phosphate was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resin-extractable P; Fertilization; Tussock; Isotopic exchange kinetics; Phosphate.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300022

Long-term annual fertilization with nitrogen and potassium affect yield and mineral composition of 'Fuji' apple
Provedor de dados: 63
Autores: Nava,Gilberto; Dechen,Antonio Roque.
Nitrogen (N) and potassium (K) are closely related to orchard productivity, since they are usually found in higher concentrations than others macronutrients in apple (Malus × domestica Borkh) fruits. This research was carried out to assess the effect of eight years of soil additions of N and K on yield, fruit size and mineral composition of 'Fuji'/Marubakaido apple in São Joaquim, State of Santa Catarina, Southern Brazil. A factorial design was used with N and K annual fertilizer rates (0, 50, 100, 200 kg ha-1 of N and K2O) replicated in three orchards from 1998 to 2006. Yield was estimated by multiplying the total number of fruit per tree by the mean weight of 100 randomly sampled fruit. Fifteen days prior to harvest, 24 fruit pulps were analyzed for N,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica Borkh; Fertilization; Production; Nutrition.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000300013

Tillering of Tifton 85 bermudagrass in response to nitrogen rates and time of application after cutting
Provedor de dados: 63
Autores: Premazzi,Linda Monica; Monteiro,Francisco Antonio; Corrente,José Eduardo.
Nitrogen fertilization is determinant for pasture productivity, as it results in increasing forage yield and is associated with the growth physiology of forage plants. An experiment was carried out in a greenhouse to evaluate the effects of nitrogen rates and times of application after cutting on Tifton 85 Bermuda grass (Cynodon spp.) tillering. Plants were grown in a Typic Quartzipsamment soil and nitrogen rates were 0, 80, 160 and 240 mg kg-1 of soil; times of application were immediately after and seven days after cutting. A 4 x 2 factorial experiment was set in a completely randomized block design (n= 4). Plants were evaluated in two sequential growth periods - 39 and 41 days. Nitrogen rates affected tiller density, considering the initial number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cynodon; Tiller weight; Tiller density; Grass; Fertilization.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300023

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

การปรับปรุงพันธุ์ต้านทานโรคไวรัสใบหงิกเหลืองของมะเขือเทศ
Provedor de dados: 106
Autores: Kanlayanee Chaichana; Prasartporn Smitamana; Maneechat Nikronpun.
Improvement of tomato for resistance to tomato yellow leaf curl virus (TYLCV) were carried out byusing a pedigree and backcrossing methods and crossing between resistant parent H-24 with susceptible parents CT-1 and CT-2. The virus was transmitted by viruliferous whiteflies and virus infection was detected by sandwich ELISA. F2 generation showed moderate resistance with scores ranging from 1.58-3.21. Segregation of disease resistance was observed among the population. Virus detection of the F2 populations (scoring 1 or 2) showed virus titer which were not statistically different from H24 but were significantly different from CT-1, CT-2 and susceptible control. The disease severity and virus titer in infected plants of F2 populations showed positive...
Tipo: PhysicalObject
Palavras-chave: Tomatoes; Tomato yellow leaf curl; Viroses; Plant breeding; Hybrid; Fertilization; Virus resistance; มะเขือเทศ; โรคใบหงิกเหลือง; โรคที่เกิดจากเชื้อไวรัส; การปรับปรุงพันธุ์พืช; ความต้านทานโรค; พันธุ์ลูกผสม; การคัดเลือกพันธุ์; วิธีการผสมพันธุ์.
Ano: 2009
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5720

ผลของการใส่ปุ๋ยและการควบคุมวัชพืชต่อการเจริญเติบโตของไม้ Fraxinus griffithii C.B. Clarke ณ ท้องที่ดอยอ่างขาง จังหวัดเชียงใหม่
Provedor de dados: 106
Autores: Siripun Taweesuk.
Thesis (M.Sc. in Forestry)
Tipo: PhysicalObject
Palavras-chave: Fraxinus griffithii; Manual weeding; Fertilization; ไม้ป่า; การใส่ปุ๋ย; การไม่ใส่ปุ๋ย; การควบคุมวัชพืช; การใช้แรงงาน; สารเคมีกำจัดวัชพืช; ต้นทุน; ผลตอบแทน; การเจริญเติบโต; สวนป่า.
Ano: 1988
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5457

Yield, quality, and nutríent uptake of stevia under continental Mediterranean climate
Provedor de dados: 109
Autores: Prieto,Javier Matías; Cruz Sobrado,Verónica.
Abstract Stevia (Stevia rebaudiana Bertoni) is gaining attention due to its sweetening power. The stevia crop is still relatively unknown in Europe, and very little is known about its nutrient requirements. Therefore, agronomic studies are needed. Field trials were carried out in inland Spain in 2014 and 2015, in order to evaluate the yield, quality, and nutrient requirements of stevia according to planting density and harvest regime, under a continental Mediterranean climate. In 2014, the dynamics of growth, quality and accumulation of nutrients were studied during the vegetative period according to three planting densities (5.0, 7.5, and 10.0 plants m-2). No significant influence was found. The steviol glycosides concentration decreased sharply at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative crops; Fertilization; Stevia rebaudiana; Steviol glycosides; Sweetener.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122021000400421

Nutrient accumulation models in the banana ( Musa AAA Simmonds cv. Williams) plant under nitrogen doses
Provedor de dados: 109
Autores: Torres Bazurto,Jaime; Sanchez,Jaiver Danilo; Cayón Salinas,Daniel Gerardo.
Abstract This research determined the effect of four nitrogen (N) doses on the nutritional behavior of '(N), potassium (K), phosphorus (P), calcium (Ca) and magnesium (Mg), respectively, in banana Williams, during five plant development stages and two productive cycles. The treatments were as follows: 1) absolute control, 2) 0 N, 3) 161 kg N ha-1, 4) 321.8 kg N ha-1 and 5) 483 kg N ha-1, respectively. A multivariate approach of the differences among cycles was used to adjust the models and eliminate their individual effect, with a randomized complete block design with repeated measurements over time. There were significant differences among plant development stages, with an increase in nutrient accumulation in the banana plant, there were no differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Major elements; Mineral nutrition; Musaceae; Plant physiology.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300391

Phosphate-solubilizing fungi isolated from a semiarid area cultivated with melon (Cucumis melo L. cv. gold mine)
Provedor de dados: 39
Autores: Coutinho,Flavia Paiva; Cavalcanti,Maria Auxiliadora de Queiroz; Yano-Melo,Adriana Mayumi.
Considering that little is known about the occurrence of phosphate-solubilizing fungi from areas cultivated with melon, the phosphate solubilization ability of filamentous fungi isolated in these areas was evaluated. Three hundred and eighteen filamentous fungal isolates belonging to 23 genera were evaluated, besides Aphyllophorales and Mycelia sterilia. From those, 52 were able to solubilize P: Aphyllophorales (2), Aspergillus (34), Penicillium (10) and Rhizopus (6). These results will contribute to subsidizing further research regarding the capacity of these fungi to solubilize other sources of phosphate applied to the melon crop, as well as indicate the need for a screening program to select those with higher capacity and potential for solubilization.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Filamentous fungi; Microorganism; San Francisco Valley.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000400020

Aplicação de zinco em sementes de sorgo cv. BRS 304: efeitos na nutrição e no crescimento inicial - DOI: 10.4025/actasciagron.v30i4.5300
Provedor de dados: 1
Autores: Romualdo, Liliane Maria; UNESP; Rozane, Danilo Eduardo; UNESP.
O efeito do zinco aplicado, em sementes na nutrição do sorgo, é afetado pelas fontes e doses empregadas. O presente trabalho objetivou avaliar a aplicação de zinco, a partir de duas fontes, sobre a nutrição e o crescimento inicial da cultura do sorgo cv. BRS 304, cultivado em areia. Os tratamentos foram cinco doses (0; 14,3; 28,6; 57,2 e 114,4 g kg-1 de semente) e  duas  fontes de zinco, o sulfato (22% de Zn) e o óxido (50% de Zn). Aos 25 dias após a semeadura, efetuou-se o corte das plantas, e avaliou-se a massa seca da parte aérea e das raízes, e determinou-se o teor e o acúmulo de Zn nas plantas. A aplicação de 14 g Zn kg-1 de sementes, na forma de óxido, proporcionou adequado crescimento inicial do sorgo cv. BRS 304. A fonte sulfato promoveu maior...
Palavras-chave: 5.01.00.00-9    Agronomia Sorghum bicolor; Micronutriente; Adubação; Absorção. Sorghum bicolor; Micronutrient; Fertilization; Absorption.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5300

Phosphorus nutrition in the growth of Bauhinia forficata L. seedlings - DOI: 10.4025/actasciagron.v30i5.787
Provedor de dados: 1
Autores: Brondani, Gilvano Ebling; Esalq/USP; Silva, Ariadne Josiane Castoldi; UFPR; Araujo, Marla Alessandra de; UFPR; Grossi, Fernando; UFPR; Wendling, Ivar; Embrapa; Carpanezzi, Antonio Aparecido; Embrapa.
One of the greatest problems in the elaboration of forestation programs using native species is the lack of knowledge about seedling production. This study aimed to evaluate the growth of Bauhinia forficate seedlings submitted to phosphorus levels. Eleven-day-old seedlings were transplanted to small tubettes (110 cm3) with pinus bark and vermiculite substratum base. The experiment was conducted in an entirely randomized delineation, with six P treatments: T0-control (substratum without P addition), T1-50, T2-100, T3-150, T4-200 and T5-250 mg dm-3, with five replications and 20 seedlings per replication. After 60 days, the seedlings presented a 98.2% survival rate and good root formation. The height varied in function of P levels, with maximum production up...
Palavras-chave: 5.01.03.00-8 Fitotecnia produção de mudas; Adubação; Doses de P; Espécie nativa da América do Sul; Fabaceae; Planta medicinal Produção de Mudas seedling production; Fertilization; P levels; South America native species; Fabaceae; Medicinal plant.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/787

Nitrogênio em cobertura e molibdênio foliar no feijoeiro de inverno - DOI: 10.4025/actasciagron.v32i1.1605
Provedor de dados: 1
Autores: Barbosa, Giselle Feliciani; UNESP; Arf, Orivaldo; UNESP; Nascimento, Martha Santana do; UNESP; Buzetti, Salatiér; UNESP; Freddi, Onã da Silva; UNESP.
Mesmo sendo uma planta capaz de realizar a fixação de nitrogênio em simbiose com o Rhizobium, várias pesquisas mostram que a fixação não supre as necessidades do feijoeiro em relação a esse nutriente. A aplicação de molibdênio visa melhorar a simbiose Rhizobium-feijoeiro, pela importância no metabolismo desse nutriente, e pode, com isso, diminuir a aplicação de fertilizantes nitrogenados. Assim, o objetivo do trabalho foi avaliar a resposta do feijão de inverno irrigado, em sistema plantio direto, a doses crescentes de nitrogênio em cobertura (zero, 30, 60, 90 e 120 kg há-1) e sua interação com a adubação molíbdica foliar (zero e 80 g há-1). O delineamento experimental foi o de blocos casualizados dispostos em esquema fatorial 5 x 2, com quatro repetições....
Palavras-chave: 5.01.00.00-9    Agronomia Phaseolus vulgaris L.; Adubação; Plantio direto Fitotecnia Phaseolus vulgaris L.; Fertilization; No-tillage system.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1605

Produção e qualidade de sementes de guandu: efeitos de doses de fósforo, potássio e espaçamentos em duas épocas de semeadura - DOI: 10.4025/actasciagron.v30i3.3554
Provedor de dados: 1
Autores: Bertolin, Danila Comelis; UNESP Ilha Solteira; Sá, Marco Eustáquio de; FAE/UNESP; Buzetti, Salatiér; FAE/UNESP; Santiago, Dênis; FAE/UNESP; Barbosa, Rafael Marani; FAE/UNESP.
O presente trabalho teve por objetivo avaliar o efeito de cinco doses de fósforo e quatro doses de potássio, em dois espaçamentos entre linhas e em duas épocas de semeadura na produção e qualidade de sementes de guandu (Cajanus cajan L. Millsp), em Selvíria, Estado do Mato Grosso do Sul. Para a determinação do efeito dos tratamentos, foi utilizado o delineamento em blocos casualizados, em fatorial 2x2x5x4, com quatro repetições, sendo os tratamentos 0, 40, 80, 120 e 160 kg ha-1 de P2O5; 0, 30, 60 e 90 kg ha-1 de K2O; espaçamentos de 0,30 e 0,50 m entre linhas e épocas de semeadura, que foram dezembro de 2003 e fevereiro de 2004. Na primeira semeadura, obteve-se maior produtividade, sendo obtido na segunda semeadura maior qualidade de sementes. No...
Palavras-chave: 5.01.00.00-9 Agronomia Cajanus cajan; Densidade; Adubação 5.01.03.00-8 Fitotecnia Cajanus cajan; Density; Fertilization.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3554

Phosphorus as a mitigator of the effects of water stress on the growth and photosynthetic capacity of tropical C4 grasses
Provedor de dados: 1
Autores: Kuwahara, Frank Akiyoshi; Souza, Gustavo Maia; Guidorizi, Kezia Aparecida; Costa, Ciniro; Meirelles, Paulo Roberto de Lima.
Water deficiency during the dry seasons influences the relationship between water and gas exchange in tropical grasses, reducing their productive potential. In addition, the phosphorus (P) deficiency Brazilian soils adds to the set of factors limiting crop production. In this context, the objective of this study was to evaluate the responses of different tropical forage species to phosphorus supplementation as mitigating the damage caused by water stress. Seeds of Urochloa brizantha cv. MG-4, Urochloa decumbens cv. Basilisk, Panicum maximum cv. Áries, Panicum maximum cv. Tanzânia and Paspalum atratum cv. Pojuca were germinated in pots containing 10 liters of red-yellow podzolic type soil. Experiments were conducted by combining levels of phosphorus, 8,0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grasses; Leaf gas exchanges; Fertilization; Water deficit pasture; Leaf gas exchanges; Fertilization; Water deficit.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28454

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

Nitrogen management effects on soil mineral nitrogen, plant nutrition and yield of super early cycle common bean genotypes
Provedor de dados: 1
Autores: Nascente, Adriano Stephan; Carvalho, Maria da Conceição Santana; Melo, Leonardo Cunha; Rosa, Paulo Holanda.
This study was conducted to measure the effects of the timing of nitrogen fertilization (NF) on soil N-NH4+ and N-NO3-, macronutrient contents in the leaves and grains, and the grain yield of super early genotypes (SEG) of common bean. Field experiments were performed for four growing seasons in an Oxisol soil in Santo Antônio de Goiás, Brazil, using a randomized block experimental design in a split plot scheme. The plots were planted with common bean SEG, and the subplots were the NF timings, including a treatment without N fertilization. The available soil N with improved fertility and medium to high levels of organic matter were enough to meet the N demands of the common bean crop in order to achieve yields of up to 3,000 kg ha-1. Fertilization with N,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia; Fitotecnia Phaseolus vulgaris L.; Early application of N; Fertilization; Brazilian Cerrado; Sustainable agriculture; Produção vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32781

Induced reproduction of dourado (Salminus brasiliensis): fertilization with sperm cryopreserved in ACP®-104
Provedor de dados: 2
Autores: Zanandrea, Ana Carolina Volpato; Weingartner, Marcos; Zaniboni-Filho, Evoy.
Experiments were conducted to improve the fertilization rate of cryopreserved semen of dourado, Salminus brasiliensis. The experiment tested two cryoprotectant solutions at different semen: cryoprotectant ratios (1:5, 1:15, 1:25 and 1:50). The standard solution for the species (mixture of dimethyl sulfoxide, glucose, egg yolk and distilled water) was compared to a 350 mOsm ACP®-104 solution, which is composed of powdered coconut water diluted in distilled water and methylglycol. Differences between the dilutions tested were significant only for ACP®. The fertilization potential by using the standard solution at the lowest dilution (1:5) is equated when the sperm is diluted in ACP® at 1:25 or 1:50. These results show that the standard solution is the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.06.03.04-3 cryopreservation; Sperm; Fertilization; Cryoprotectant; Coconut water.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/28838

Produção animal em pastagem natural e pastagem sobre-semeada com espécies de estação fria com e sem o uso de glyphosate - DOI: 10.4025/actascianimsci.v30i2.4674
Provedor de dados: 2
Autores: Garagorry, Fábio Cervo; UFSM; Quadros, Fernando Luiz Ferreira de; UFSM; Travi, Magdalena Reschke Lajús; UFSM; Bandinelli, Duílio Guerra; UFSM; Fontoura Júnior, José Acélio; UFSM; Martins, Carlos Eduardo Nogueira; UFSM.
Objetivou-se avaliar a produção animal de novilhos e vegetal de campo natural e de campo natural sobre-semeado com azevém (Lolium multiflorum), trevo branco (Trifolium repens) e cornichão (Lotus corniculatus) com e sem a utilização do herbicida glyphosate. Os tratamentos foram: CN – campo nativo, com roçada anual; CNI – campo nativo com sobre-semeadura, adubação e roçada anual; G1 – Idem ao CNI com aplicação de herbicida no primeiro ano; G3 – idem ao G1 com supressão da vegetação natural com herbicida no segundo e terceiro ano; GA3 – Idem ao G3 com adubação duplicada nos três anos. O delineamento experimental foi blocos completamente casualizados com duas repetições. Os resultados apresentados são do terceiro ano de avaliação. Para ganho médio diário,...
Palavras-chave: 5.04.04.00-8   Pastagem e Forragicultura introdução de espécies; Herbicida; Adubação; Pastagem natural; Ganho por área; Sobre-semeadura. species introduction; Herbicide; Fertilization; Natural pasture; Gain per area; Sod seeding.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4674

Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index
Provedor de dados: 2
Autores: Costa, Joao Paulo Ramos; Caputti, Gregory de Paula; Galzerano, Leandro; Silva, Wilton Ladeira da; Ruggieri, Ana Cláudia; Malheiros, Euclides Braga.
The nutritional status of xaraes palisade grass with SPAD chlorophyll meter and the critical nitrogen sufficiency index (cNSI) in the dry and rainy seasons were assessed. The experiment was conducted in a completely randomized design with four treatments (50, 100, 200 and 400 kg N ha-1), three replicates and two seasons: dry and rainy. All variables had a high nonlinear relationship with their predictors (p &lt; 0.001). Total nitrogen (TN) reached a plateau at doses 262.0 and 514.8 kg of N ha-1 and the concentration of TN in the plant was 1.88 and 1.93% respectively during the rainy and dry season. Relative chlorophyll content (RCC) reached a plateau at 46.05 and 53.65 SPAD units in the rainy and dry seasons, respectively. The production of dry matter (DM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Urochloa brizantha; Chlorophyll meter; Nutritional status; SPAD.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24854

Crescimento do camarão marinho Farfantepenaeus subtilis (Pérez-Farfante, 1967) cultivado em tanques com diferentes protocolos de fertilização orgânica - DOI: 10.4025/actascibiolsci.v31i3.7565
Provedor de dados: 3
Autores: Souza, Flávia Maria Maciel Carneiro de; UFRPE; Messias, Gustavo Arretche; UFRPE; Fialho, Diogo Henrique Feijó; UFRPE; Soares, Roberta Borda; UFRPE; Correia, Eudes de Souza; UFRPE.
Este trabalho objetivou avaliar o crescimento do camarão Farfantepenaeus subtilis submetido a diferentes regimes de fertilização usando fertilizantes orgânicos e inorgânicos. O desenho experimental consistiu de três tratamentos e três repetições: controle (CT) – 3 mg L-1 de ureia e 0,3 mg L-1 de monoamônio fosfato; farelo de trigo (FT) – 25 g m-2; farelo de soja (FS) – 18,75 g m-2. Nove tanques de 500 L foram estocados com 16 camarões m-2 (≈ 2,7 g), os quais foram alimentados com ração comercial contendo 35% de proteína bruta. Quinzenalmente, a qualidade da água foi monitorada e amostras de camarões foram coletadas para avaliar o crescimento e reajustar a quantidade de ração. Durante o cultivo, a qualidade da água manteve-se adequada ao cultivo do camarão....
Palavras-chave: 2.00.00.00-6    Ciências Biológicas Farfantepenaeus subtilis; Fertilização; Crescimento Farfantepenaeus subtilis; Fertilization; Growth.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7565

Interaction effect between mineral zinc-nitrogen fertilization mixture and organic fertilization as compost on yield, nutrients uptake of rice and some soil properties
Provedor de dados: 111
Autores: Mosaad, Ibrahim S; Khafagy, El-Hosiny E; Seada, Ali K.
To study the effect of organic fertilization as compost (20 m3 fed-1), mineral Zinc-Nitrogen fertilization mixture (three Zinc levels (0, 8 and 16 kg Zn fed-1) and three nitrogen rates (0, 30 and 60 kg N fed-1 were mixed alternately) on growth, grain and straw yields, N, P and K uptake for rice crop (Oryza sativa), variety Giza 178, two field trials at El-Serw Agricultural Research Station, Damietta governorate were conducted through summer seasons of 2015 and 2016. Plant height, dry matter, grain and straw yields also, N, P and K-uptake in grain and straw yields increased with increasing levels of zinc and nitrogen fertilization. Moreover, use organic fertilization as compost gave the highest values of the previous parameters. Applying of 16 kg Zn fed-1 +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice; Zinc; Compost; Organic matter; Uptake; Nitrogen; Fertilization.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4647

Uptake and nitrogen efficiency in forage maize: effects of nitrogen and plant density
Provedor de dados: 115
Autores: Fallah,S.; Tadayyon,A.
Efficient nitrogen (N) fertilizer management is critical for the economic production of maize (Zea mays L.) and the long-term protection of environmental quality. To study the effects of N doses and plant density on the N uptake and efficiency on forage maize cv. SC 704, an experiment was conducted in the Shahrekord region (32° 21' N, 50° 49' E; altitude 2050 m), Iran, at the Agricultural Research Station of Shahrekord University, during the 2007 growing season. The experiment was arranged with four plant densities (92 600, 104 200, 119 000 and 138 900 plants ha-1) and four nitrogen doses (200, 240, 280 and 320 kg ha-1) in a randomized complete block design with four replications. Increases of the plant density led to a significant N uptake in stalk, grain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Density; Efficiency; Fertilization; Uptake.
Ano: 2010
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952010000500005

Induction of the acrosome reaction test to in vitro estimate embryo production in Nelore cattle
Provedor de dados: 45
Autores: Costa,M.Z.; Oliveira,L.Z.; Resende,M.V.; Lucio,A.C.; Perini,A.P.; Miguel,M.C.V.; Lima,V.F.M.H.
The effectiveness of induction of the acrosome reaction (AR) test as a parameter to in vitro estimate embryo production (IVP) in Nelore breed and the AR pattern by the Trypan Blue/Giemsa (TB) stain were evaluated. Frozen semen samples from ten Nelore bulls were submitted to AR induction and were also evaluated for cleavage and blastocyst rates. The treatments utilized for AR induction were: control (TALP medium), TH (TALP medium + 10μg heparin), TL (TALP medium + 100μg lysophosphatidylcholine) and THL (TALP medium + 10μg heparin + 100μg lysophosphatidylcholine). Sperm acrosomal status and viability were evaluated by TB staining at 0 and after 4h incubation at 38°C. The results obtained for AR presented a significant difference (P&lt;0.05) in the percentage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Fertility; Semen; Acrosome reaction; Fertilization.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000400001

Single-channel response of hamster oocytes to ertilization with homologous spermatozoa
Provedor de dados: 47
Autores: Ituarte,Leonor M.E.; Viera,Teresa B.; Saldeña,Teobaldo A.; De Rosas,Juan C.; Fóscolo,Mabel; Ibáñez,Jorge E.; Saraví,Fernando D.
Electrophysiological events occur early after fertilization, along with changes in intracellular Ca2+ concentration . Passive electrical parameters were determined in golden hamster oocytes by whole cell patch-clamp method. In separate experiments the effect of 4-aminopyridine on resting oocytes was tested. The single-channel patch clamp configuration was employed to assess the electrical response to fertilization with homologous sperm. Structure of oocytes submitted to patch clamp was evaluated with scanning electron microscopy and found to be preserved. Oocyte diameter was 70.2 ±  2.2 µm; their resting parameters were: membrane potential 23.8 ±  0.8 mV; total membrane specific resistance 519.1 ±  94.6 &amp;#937;.cm², and specific capacity 0.99 ±  0.03...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 4-Aminopyridine; Fertilization; Hamster oocyte; Patch-clamp; Membrane current.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100007

The beginning of life of a new human being from the scientific biological perspective and its bioethical implications
Provedor de dados: 48
Autores: Ventura-Juncá,Patricio; Santos,Manuel J.
The issue of when the human life begins is a very important subject since it has a significant impact on the decisions that we have to take in relation to human beings in development, particularly human embryos. In this article we discuss some of the more relevant biological evidence supporting the fact that beginning human life begins unquestionably at fertilization and the bioethical consequences.
Tipo: Journal article
Palavras-chave: Fertilization; Beginning of human life; Bioethics.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200013

The effect of cigarette smoke on fertilization and pre-implantation development: assessment using animal models, clinical data, and stem cells
Provedor de dados: 48
Autores: Talbot,Prue; Lin,Sabrina.
Numerous studies have repeatedly shown that women who smoke experience problems establishing and maintaining pregnancies, and recent work has further demonstrated that the in utero effects of smoke may not be manifested until months or even years after birth. The purpose of this review is to examine the recent literature dealing with the effects of cigarette smoke on the earliest stages of human prenatal development. Studies in this area have included the use of animal models, patients undergoing in vitro fertilization, and embryonic stem cell models. Events leading to fertilization, such as cumulus expansion, hyperactivation of sperm motility, and oocyte pick-up by the oviduct are all impaired by smoke exposure in animal models. Steps crucial to...
Tipo: Journal article
Palavras-chave: Cigarette smoke; Embryos; Fertilization; IVF; Stem cells; Toxicology.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200011

Protease activity involvement in the passage of mammalian sperm through the zona pellucida
Provedor de dados: 48
Autores: Moreno,Ricardo D; Laserre A,Andrea; Barros,Claudio.
The interaction between acrosome-reacted sperm and zona pellucida proteins is not yet fully understood. Serine protease acrosin and its zymogen proacrosin have been proposed to fulfill this function due to their capacity to bind zona pellucida glycoproteins. However, the molecular mechanism underlying this interaction has been merely speculative. Here we show that fucoidan (a sulfated polysaccharide) and solubilized zona pellucida glycoproteins, but not soybean trypsin inhibitor, are able to detach bound spermatozoa, which suggests that live sperm binds to the zona pellucida in a non-enzymatical way. Interestingly, mild proteolytic digestion with acrosin or trypsin does not modify the structure of the zona pellucida, but rather results in fewer spermatozoa...
Tipo: Journal article
Palavras-chave: Fertilization; Acrosin; Acrosome; Zona pellucida; Sperm.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200006

Targeting and fusion proteins during mammalian spermiogenesis
Provedor de dados: 48
Autores: RAMALHO-SANTOS,JOÃO; MORENO,RICARDO D.
Regulated exocytosis is controlled by internal and external signals. The molecular machinery controlling the sorting from the newly synthesized vesicles from the Golgi apparatus to the plasma membrane play a key role in the regulation of both the number and spatial location of the vesicles. In this context the mammalian acrosome is a unique vesicle since it is the only secretory vesicle attached to the nucleus. In this work we have studied the membrane trafficking between the Golgi apparatus and the acrosome during mammalian spermiogenesis. During bovine spermiogenesis, Golgi antigens (mannosidase II) were detected in the acrosome until the late cap-phase spermatids, but are not found in testicular spermatozoa (maturation-phase spermatids). This suggests...
Tipo: Journal article
Palavras-chave: Acrosome; Spermatid; Golgi; Fertilization; Spermiogenesis.
Ano: 2001
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602001000200021

Cysteine-Rich Secretory Proteins (CRISP) and their role in mammalian fertilization
Provedor de dados: 48
Autores: Cohen,Débora J; Maldera,Julieta A; Weigel Muñoz,Mariana; Ernesto,Juan I; Vasen,Gustavo; Cuasnicu,Patricia S.
Epididymal protein CRISPI is a member of the CRISP (Cysteine-RIch Secretory proteins) family and is involved in sperm-egg fusion through its interaction with complementary sites on the egg surface. Results from our laboratory have shown that this binding ability resides in a 12-amino-acid region corresponding to a highly conserved motif of the CRISP family, named Signature 2 (S2). In addition to this, our results revealed that CRISP1 could also be involved in the previous step of sperm binding to the zona pellucida, identifying a novel role for this protein in fertilization. As another approach to elucidate the participation of CRISP1 in fertilization, a mouse line containing a targeted disruption of CRISP1 was generated. Although CRISP1-deficient mice...
Tipo: Journal article
Palavras-chave: Sperm; Gamete fusion; CRISP; Egg; Fertilization.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200004

Soil chemical attributes and energetic potential of agricultural residual biomasses provided by 23-year soil management
Provedor de dados: 53
Autores: Pierri,Letícia de; Pauletti,Volnei; Barth,Gabriel; Motta,Antônio Carlos Vargas; Silva,Dimas Agostinho da; Roza,Luciano Antunes da; Saudade,Cesar Augusto Schmid.
ABSTRACT Residual biomass from grains has potential as an energetic source. Biomass composition determines this potential and is related to plant nutrition, which may vary according to soil fertility. The aim of this 23-year field study was to evaluate changes in chemical attributes of a Brazilian Oxisol and in the energetic potential of oat (Avena sativa L.) and soybean (Glycine max (L.) Merr) residual biomasses provided by tillage systems and fertilizer rates. The trial was performed since 1989, assessing soil chemical attributes in no-tillage (NT), conventional (CT), minimum (MT) and no-tillage plus chisel plough (NT+CP), with two fertilizer rates (normal and reduced, since 1994). Oat and soybean (2012/2013) residual biomasses were collected and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioenergy; No-tillage; Fertilization; Avena sativa L.; Glycine max (L.) Merr.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300454

Sperm and Egg Jelly Coat from Sea Urchin Lytechinus variegatus Collected in Rio de Janeiro Contain Distinct Sialic Acid-Rich Polysaccharides
Provedor de dados: 52
Autores: Valle,Gabrielle M.; Cinelli,Leonardo P.; Todeschini,Adriane R.; Brito-Gitirana,Lycia de; Vilela-Silva,Ana-Cristina E.S.; Mourão,Paulo A.S.
This work found the occurrence of a distinct sialic acid-rich polysaccharide in the sperm surface of the sea urchin Lytechinus variegatus, which differed significantly from a similar molecule found in the egg jelly. The sperm polysaccharide extracted by protease digestion was purified using anion exchange chromatography and characterized using agarose gel electrophoresis, gas chromatography/mass spectrometry and NMR spectroscopy. This polysaccharide was highly sulfated and composed almost exclusively of N-acetylneuraminic acid. In contrast, the sialic acid-rich polysaccharide from the egg jelly was composed of N-glycolylneuraminic acid and contains several other hexoses in its structure. This new molecule could help to characterize in further detail the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sea urchin; Sperm; Egg jelly coat; Fertilization; Sialic acid; Sulfated polysaccharide.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000400617

Regionalization of oviducts in Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae) and its potential significance for fertilization
Provedor de dados: 57
Autores: GARCÍA-FERNÁNDEZ,C.; GARCIA,S. M. L.; SCHNEIDER,F. L.; SEVERINO,A. G.; WINKELMANN,E. C.
The structural analysis of oviducts in Boophilus microplus (Canestrini, 1887) in different stages of ingurgitation has indicated that they are constituted primarily of an internal cylinder and an external cylinder with different cell types being found between them. Copulated females in active ingurgitation process show typical variations along the internal cylinder, and three regions can be defined: anterior, ring-like and transitional. Based on such regionalization, hypotheses were raised about where and how fertilization takes place, a process yet to be clarified for the acari.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acari; Ticks; Female reproductive system; Fertilization.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400014

A carbohydrate-based mechanism of species recognition in sea urchin fertilization
Provedor de dados: 56
Autores: Mourão,P.A.S.
In the present review, we describe a systematic study of the sulfated polysaccharides from marine invertebrates, which led to the discovery of a carbohydrate-based mechanism of sperm-egg recognition during sea urchin fertilization. We have described unique polymers present in these organisms, especially sulfated fucose-rich compounds found in the egg jelly coat of sea urchins. The polysaccharides have simple, linear structures consisting of repeating units of oligosaccharides. They differ among the various species of sea urchins in specific patterns of sulfation and/or position of the glycosidic linkage within their repeating units. These polysaccharides show species specificity in inducing the acrosome reaction in sea urchin sperm, providing a clear-cut...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acrosome reaction; Fertilization; Sulfated fucans; Glycosaminoglycans; Sulfated galactans; Species diversity; Sperm-egg recognition.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000100002

Interactions between intracellular Ca2+ stores: Ca2+ released from the NAADP pool potentiates cADPR-induced Ca2+ release
Provedor de dados: 56
Autores: Chini,E.N.
Cells possess multiple intracellular Ca2+-releasing systems. Sea urchin egg homogenates are a well-established model to study intracellular Ca2+ release. In the present study the mechanism of interaction between three intracellular Ca2+ pools, namely the nicotinic acid adenine dinucleotide phosphate (NAADP), the cyclic ADP-ribose (cADPR) and the inositol 1',4',5'-trisphosphate (IP3)-regulated Ca2+ stores, is explored. The data indicate that the NAADP Ca2+ pool could be used to sensitize the cADPR system. In contrast, the IP3 pool was not affected by the Ca2+ released by NAADP. The mechanism of potentiation of the cADPR-induced Ca2+ release, promoted by Ca2+ released from the NAADP pool, is mediated by the mechanism of Ca2+-induced Ca2+ release. These data...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CADPR; NAADP; Calcium; Sea urchin eggs; Fertilization; IP3.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000500005

Effect of nitrogen on achene protein, oil, fatty acid profile, and yield of sunflower hybrids
Provedor de dados: 117
Autores: Ali,Amjed; Ullah,Sami.
Seed yield and achene oil yield are the main determinants for N application rates rather than seed composition. Nitrogen plays a critical role in producing unsaturated fatty acids (oleic and linoleic acids), which are the main factors determining sunflower oil quality (Helianthus annuus L.). Studies were conducted on the effect of N fertilization on seed yield, achene oil yield, and quality parameters of sunflower hybrids for two successive years (2010 and 2011) in a split plot arrangement under a randomized complete block design. The hybrids (Hysun-33 &amp;amp; S-278) and N levels (0, 75, 150, and 225 kg ha-1) were allotted in main and sub-plots, respectively. Increasing N levels resulted in steady increases in yield, protein contents and linoleic acid,...
Tipo: Journal article
Palavras-chave: Fertilization; Linoleic acid; Oleic acid; Palmitic acid; Helianthus annuus.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400016

Effect of Vermicompost and Compost on Lettuce Production
Provedor de dados: 117
Autores: Hernández,Adriana; Castillo,Hugo; Ojeda,Dámaris; Arras,Ana; López,Julio; Sánchez,Esteban.
A greenhouse study was conducted to evaluate the effect on total growth and leaf nutritional content in lettuce (Lactuca sativa L.) in the Agrotechnology Sciences Department of the Universidad Autonoma de Chihuahua, Mexico in 2007. Three types of fertilization treatments were analyzed: two organic and one conventional or inorganic. Both vermicompost and compost were produced from cattle manure in a 25-wk process. The study included 12 experimental units made up of lettuce plantlets var. Great Lakes. A linear model was fitted for statistical analysis using a completely randomized experimental design. ANOVA was performed and means were compared by orthogonal contrasts. Results showed differences in weight and leaf content for the N and K variables, and the...
Tipo: Journal article
Palavras-chave: Fertilization; Nutrient; Growth; Quality.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000400008

Potassium and Phosphorus in Muscat Rosada Grape Yield in Elqui Valley Soil
Provedor de dados: 117
Autores: Sierra B,Carlos; Alfaro P,Rubén.
The effects of P and K on grapevines (Vitis vinifera L.) var. Muscat Rosada were evaluated four years, considering the same levels of N. The experiment was conducted at the Vicuña Experimental Station (30° S; 70°44´ W) of the Instituto de Investigaciones Agropecuarias (INIA). The soil is alluvial antropic miscellaneous (Entisols). Three fertilization treatments were established: 1) N 160 + P2O5 200 + K2O 300; 2) N 160 + P2O5 0 + K2O 300; and 3) N 160 + P2O5 200 + K2O 0. At the beginning of the experiment, grape vines received all the phosphate fertilizers, 200 kg ha-1 of P2O5 as triple superphosphate in Treatments 1 and 3. Nitrogen was applied as urea for four years. The applications were initiated when the vine buds measured 20 cm. The K was applied to...
Tipo: Journal article
Palavras-chave: Grapes; Fertilization; Phosphorus; Potassium.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300010

Effect of soil depth and increasing fertilization rate on yield and its components of two durum wheat varieties
Provedor de dados: 117
Autores: Hirzel,Juan; Matus,Iván.
Agronomic practices, climatic variables, and soil conditions are key factors in crop productivity. Although the effects of soil chemical properties and water and agronomic crop management are known, there is little information about effective soil depth and its influence on crop productivity. Since most crop fertilization systems are based on the productive potential associated with climatic conditions and chemical properties of the first 20 cm of soil depth, the objective of this study was to determine the importance of effective depth in terms of increasing fertilization rates on durum wheat (Triticum turgidum L. var. durum) productivity. Two experiments were conducted in the 2006-2007 season in the Santa Rosa Experimental Station (71°54' S, 36°31' W,...
Tipo: Journal article
Palavras-chave: Durum wheat; Soil depth; Fertilization; Triticum turgidum.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000100008

Stem and soil CO2 efflux responses of Pinus radiata plantations to temperature, season, age, time (day/night) and fertilization
Provedor de dados: 118
Autores: Bown,Horacio E; Watt,Michael S.
Stem CO2 efflux is a highly variable component of the carbon budget of forest ecosystems. It reflects the balance between the CO2 respired by the living stem tissues, less the CO2 dissolved in the xylem sap moving upward in the transpiration stream, plus the CO2 transported from the roots and released at the stem. Although knowledge about such fluxes at different spatial and temporal scales has markedly increased, knowledge of the effects of silviculture treatments, such as fertilization, on stem CO2 effluxes are still limited, particularly when connecting above- and belowground processes. Using measurements obtained from twin plots (one control, one fertilized) installed in five-, 12- and 23-year-old stands of Pinus radiata, the objective of this study...
Tipo: Journal article
Palavras-chave: Aboveground; Age; Belowground; CO2 efflux; Fertilization; Forest plantation.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100009

Management, production, and nutritional characteristics of cup-plant (Silphium perfoliatum) in temperate climates of southern Chile
Provedor de dados: 118
Autores: Pichard,Gastón.
There is little information known about the response of cup-plant (Silphiumperfoliatum L.), a perennial forage crop introduced to Chile, to differing cultivation practices. A series of studies was conducted to evaluate the adaptation and productivity of cup-plant across a range of plant densities (104,000 - 208,000 plants ha-1), cutting stages (early vegetative to seed formation), and different levels of N (0 - 400 kg N ha-1) and P (0 - 400 kg P2O5 ha-1) fertilization. Field experiments (40°S 73°W) were conducted over a 3-yr period in a subhumid, Mediterranean climate on three distinct andisols that originated from volcanic ash, with pH values of 5.2 to 5.6. The forage dry matter yield, plant components (stem count, stem diameter, plant height, and...
Tipo: Journal article
Palavras-chave: Cup-plant; Cutting frequency; Fertilization; Forage crop; Nutritional quality; Population density.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100005

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

Nitrogen dose and type of herbicide used for growth regulation on the green coloration intensity of Emerald grass
Provedor de dados: 65
Autores: Gazola,Raíssa Pereira Dinalli; Buzetti,Salatiér; Gazola,Rodolfo de Niro; Castilho,Regina Maria Monteiro de; Teixeira Filho,Marcelo Carvalho Minhoto; Celestrino,Thiago de Souza; Dupas,Elisângela.
ABSTRACT: Nitrogen (N) is the main nutrient responsible for the green coloration of lawns but also stimulates the growth of the aerial portion of grass, thus increasing mowing expenses. Therefore, herbicides may be used as a growth regulator. The ideal herbicide will reduce lawn height without affecting esthetics. Toward this end, the aim of the present study was to evaluate the green coloration of Emerald grass ( Zoysia japonica Steud.) under the effect of different N doses or herbicides used as growth regulators. The study site consisted of randomized blocks containing 20 treatments arranged in a 5×4 factorial design with four treatment groups: four herbicides (glyphosate, imazaquin, imazethapyr, and metsulfuron-methyl, accounting for 200, 420, 80, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zoysia japonica Steud.; Lawn; Leaf chlorophyll content; Digital imaging; Fertilization; Glyphosate; Imazaquin; Imazethapyr; Metsulfuron-methyl.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000600984

Pre-incubation of porcine semen reduces the incidence of polyspermy on embryos derived from low quality oocytes
Provedor de dados: 65
Autores: Brogni,Cláudio Francisco; Ohlweiler,Lain Uriel; Klein,Norton; Mezzalira,Joana Claudia; Cristani,Jose; Mezzalira,Alceu.
ABSTRACT: The main cause of low efficiency of in vitro produced porcine embryos is the high polyspermic penetration rates at fertilization, which is aggravated in low quality oocytes. Experiment 1 evaluated the embryo development in high and low quality oocytes. Experiment 2 evaluated the embryo development and quality of low quality oocytes fertilized with sperm pre-incubated during 0h (control), 0.5h, 1h and 1.5h. Experiment 3 investigated fertilization and monospermic rates of the same groups of Experiment 2. Experiment 4 evaluated embryo development, cell density, fertilization and monospermic rates of high quality oocytes using semen pre incubated during the best time observed in the previous experiments. Cleavage and blastocyst rates were analyzed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pig IVF; Embryo IVP; Monospermy; Fertilization; Oocyte.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601113

Salinity on artificial reproduction of silver catfish (Rhamdia quelen)
Provedor de dados: 65
Autores: Martins,Gabriel Bernardes; Piedras,Sérgio Renato Noguez; Pouey,Juvêncio Luís Osório Fernandes; Bongalhardo,Denise Calisto; Robaldo,Ricardo Berteaux.
Attempting to improve reproduction performance and ichthyo prophylaxis, this study evaluated the effects of maintaining silver catfish (Rhamdia quelen) broodstock in different saline concentrations (0, 2, 4, 6 and 8‰) on gametes quality and reproductive viability. The results showed that sperm percent motility did not change between 0 and 4‰, but it was reduced at 6‰, and sperm became immotile at 8‰ salinity. Sperm motility time was increased (almost five fold) at 6‰. Salinities up to 4‰ prevented fertilization and hatching, proving their deleterious effects on oocytes and embryos. Therefore, media up to 4‰ salinity may be an alternative for icthyo prophylaxis, although fertilization and incubation must be done in freshwater medium
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Semen; Motility; Eggs; Fertilization; Salt.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000300458

Does planting time affect the nutritional demand and yield of potato cultivars?
Provedor de dados: 65
Autores: Eschemback,Vlandiney; Kawakami,Jackson; Genú,Aline Marques; Almeida,Fabiola Oliveira de.
ABSTRACT:  Determining the level of absorption of nutrients in the potato crop at different stages of development is important because it allows identification of the time when the elements are most required by plants. The objective of this research was to evaluate the level of nutrient absorption in cultivars after different planting times. Field experiment was conducted in Guarapuava-PR. Treatments consisted of three cultivars (Agata, BRS Clara, and BRS F63 Camila) and two planting times (October and February), in randomized blocks, with three replications in the crop season 2015/16. The total macro and micronutrient content (leaves, stems, and tubers) was quantified at 15 and 45 days after plant emergence. The total dry weight of plants was verified at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Fertilization; Fertility; Nutrition; Productivity; Variety.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600203

Foliar copper uptake by maize plants: effects on growth and yield
Provedor de dados: 65
Autores: Barbosa,Rogério Hidalgo; Tabaldi,Luciane Almeri; Miyazaki,Fábio Rodrigo; Pilecco,Márcio; Kassab,Samir Oliveira; Bigaton,Daísa.
A slight increase in the levels of a certain nutrient can cause a significant increase in crop yield or can cause phytotoxicity symptoms. Thus, the aim of this study was to evaluate the effect of foliar application of copper (Cu) on the growth and yield of DG-501 maize. The experiment was carried out between December 2009 and April 2010 in conventional tillage. When plants were with six to eight leaves, Cu (0, 100, 200, 300, 400, 500 and 600g ha-1) was applied to the leaves. Treatments were arranged in randomized complete block with five replications. When 50% of the plants were in flowering, it was evaluated the plant height, culm diameter, height of the first ear insertion, leaf area, and chlorophyll content. At harvest, it was evaluated diameter and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Micronutrient; Toxicity; Zea mays.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000900005

Coating seeds with fertilizer: A promising technique for forage crop seeds
Provedor de dados: 64
Autores: Baroni,Danilo Força; Vieira,Henrique Duarte.
ABSTRACT Fertilization is not a common management practice at pasture establishment in Brazil. Seed coating technology can be a useful approach to ensure the availability of nutrients to plants during the early stages of development. Thus, the objective of this work was to investigate the incorporation of liquid fertilizer in seeds of Stylosanthes and to evaluate the effect of this technology on seed quality. Mastermins® fertilizer was applied to the last layer of the binder material coating on the seed and Polyseed 76F polymer adhesive was thereafter applied onto the fertilizer. Physiological and biometric analyses of the seeds were carried out. Six fertilizer doses (0, 10, 20, 30, 40, and 50 mL.100 g seeds-1) were tested, with and without adhesive. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stylosanthes capitata/macrocephala cv. Campo Grande; Seed quality; Fertilization; Polymer adhesive.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100228

Application of different fertilizers in substrate for Kalanchoe luciae Raym.-Hamet cultivation
Provedor de dados: 64
Autores: Lessa,Marília Andrade; Paiva,Patrícia Duarte de Oliveira; Alves,Camila Magalhães Lameiras; Resende,Maria Leandra.
Succulents present great commercial importance, but information on the cultivation of these plants are not enough, especially considering the use of fertilizers during the growth phase. The objective of this study was to evaluate the effect of different fertilizers applied to the substrate in the cultivation of Kalanchoe luciae Raym.-Hamet. Cuttings measuring 6 cm in height and 12 cm in diameter were cultivated in 1.5 L pots containing the substrate (1 soil: 1 sand: 1 vermiculite). In this experiment, the effect of the fertilization based on NPK 10:10:10 was evaluated with and without the addition of a fertilizer mixture composed of 5 g bone flour, 5 g dolomite limestone, and 50 g ground charcoal, this proportion that was used for each 1.5 L substrate....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crassulaceae; Fertilization; Ornamental plants.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000400002

Development of clonal matrices of australian red cedar in different substrates under fertilizer doses
Provedor de dados: 64
Autores: Benatti,Bruno Peres; Furtini Neto,Antonio Eduardo; Moretti,Bruno da Silva; Stehling,Eduardo de Castro; Sousa,Thaiana Marinha Almeida de.
In order to evaluate fertilizers doses in different substrates for growth and development of clonal matrices of Australian Red Cedar [Toona ciliata var. australis (F. Muell.) Bahadur], an experiment was conducted in a greenhouse. Five substrates were evaluate, with proportions by volume, the first consisting of 100% of Multiplant florestal®, the second of 50% vermiculite, 20% carbonized rice hulls, 20% soil and 10% coconut fiber, the third with 50% soil and 50% sand, the fourth was composed by 50% Multiplant florestal®, 10% soil and 40% coconut fiber and the fifth with 65% of Multiplant florestal®, 25% vermiculite and 10% carbonized rice hulls. The fertilizers doses applied were 0.0; 0.3; 0.6; 1.2; 2.4 of fertilization suggested by Malavolta (1980) for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toona ciliata; Plant nutrition; Fertilization.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000300003