Consulta: subjectFacets:"Grain yield"
Registros recuperados: 127
Data/hora: 03/06/2024 05:36:55

Indicadores físicos de un suelo bajo labranza de conservación y su relación con el rendimiento de tres cultivos.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Navarro Bravo, Agustín.
El manejo físico o laboreo del suelo se hace para crear condiciones óptimas en la zona de raíces de las plantas, a través de una adecuada estructura, porosidad, infiltración y retención de agua, entre otras, que son importantes para el manejo sustentable del recurso suelo. Para la identificación de indicadores físicos del suelo para la producción de cultivos, se utilizaron técnicas tradicionales y no destructivas de análisis tales como: la reflectometría de dominio del tiempo (TDR) y el penetrómetro de ultrasonido (PU) que garantizan la medición rápida de algunas propiedades físicas del suelo. Bajo este enfoque, se evaluó un agroecosistema de haba-maíz-frijol en rotación manejado con labranza de conservación, en el Colegio de Postgraduados, Montecillo,...
Palavras-chave: Estructura del suelo; Rendimiento de grano; Sostenibilidad; Grain yield; Soil structure; Sustainability; Doctorado; Edafología.
Ano: 2010
URL: http://hdl.handle.net/10521/60

Producción de garbanzo (Cicer arietinum L.) en función del manejo y ambiente.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Apáez Barrios, Maricela.
El garbanzo es una de las leguminosas más consumidas en México por sus características nutrimentales y nutracéuticas, lo que lo hace un cultivo se suma importancia. El objetivo del estudio fue determinar la respuesta a la distancia entre hileras de siembra y fertilización nitrogenada sobre índices de análisis de crecimiento, la biomasa, rendimiento y calidad de rendimiento. Durante el ciclo de producción otoño invierno de 2011, se realizó un estudio con garbanzo (Cicer arietinum L.) en terreno de productores cooperantes bajo condiciones de humedad residual en Huitzuco Gro., Méx, de clima cálido. Se evaluó la distancia entre hilera a 40 cm y 80 cm (D40 y D80, respectivamente) y fertilización nitrogenada (FN): 0, 50 y 100 kg N ha-1 (N0, N50 y N100,...
Palavras-chave: Biomasa total; Distancia entre hilera; Nitrógeno; Rendimiento de grano; Rentabilidad económica; Total biomass; Distance between row; Nitrogen; Grain yield; Profitability; Botánica; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2010

Evaluación agronómica e interacción genotipo-ambiente en poblaciones de maíz de la raza Jala.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: López Guzmán, Jesús Asunción.
La raza Jala de maíz (Zea mays L.) es una de las más importantes de México. Ésta ha sido cultivada durante siglos en el Valle de Jala, Nayarit, y su mazorca se reconoce mundialmente como la de mayor tamaño; no obstante, esta raza ha sufrido “erosión genética” grave que le ha provocado una reducción en longitud de mazorca y producción de grano. Para contribuir a su conservación y mejoramiento genético, en este trabajo se estudiaron su potencial productivo (RGp) y atributos agronómicos, en especial la longitud de mazorca (LMZ). Por otro lado, los productores citan con frecuencia la confianza que tienen en los maíces criollos por ser opciones resistentes y predecibles en su comportamiento agronómico, en comparación con las variedades “modernas” producto del...
Palavras-chave: Zea mays L.; Interacción genotipo por ambiente; Poblaciones; Raza Jala; Rendimiento; Longitud de mazorca; Biplot; Genotype x environment interaction; Populations; Jala race; Grain yield; Ear length; Genética; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2194

Estimación de parámetros genéticos en cruzas intervarietales de maíz para la región semicálida de Guerrero.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Palemón Alberto, Francisco.
La orografía y agroecología del estado de Guerrero es muy diversa. En las áreas de altitud intermedia (1200 a 1700 m) prácticamente no se siembran con variedades mejoradas de maíz, debido a su limitada adaptación a las condiciones climáticas y edáficas; por lo que, prevalece la siembra de poblaciones nativas. En las áreas semicálidas se ha seleccionado germoplasma subtropical local; paralelamente, en Valles Altos se aplicó selección para adaptación en cuatro poblaciones tropicales durante 10 años. Con estas siete poblaciones progenitoras se generaron 12 cruzas intervarietales (CI) en arreglo factorial, con el propósito de valorar los avances del mejoramiento genético y detectar alguna CI de valor comercial. Las CI, sus progenitores y testigos se evaluaron...
Palavras-chave: Zea mays L.; Variedades tropicales y subtropicales; Aptitud combinatoria general y específica; Heterosis; Estabilidad; Rendimiento de grano; Tropical and subtropical varieties; General and specific combining ability; Stability; Grain yield; Genética; Doctorado.
Ano: 2010
URL: http://hdl.handle.net/10521/284

Indicadores físicos de un suelo bajo labranza de conservación y su relación con el rendimiento de tres cultivos.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Navarro Bravo, Agustín.
El manejo físico o laboreo del suelo se hace para crear condiciones óptimas en la zona de raíces de las plantas, a través de una adecuada estructura, porosidad, infiltración y retención de agua, entre otras, que son importantes para el manejo sustentable del recurso suelo. Para la identificación de indicadores físicos del suelo para la producción de cultivos, se utilizaron técnicas tradicionales y no destructivas de análisis tales como: la reflectometría de dominio del tiempo (TDR) y el penetrómetro de ultrasonido (PU) que garantizan la medición rápida de algunas propiedades físicas del suelo. Bajo este enfoque, se evaluó un agroecosistema de haba-maíz-frijol en rotación manejado con labranza de conservación, en el Colegio de Postgraduados, Montecillo,...
Palavras-chave: Estructura del suelo; Rendimiento de grano; Sostenibilidad; Grain yield; Soil structure; Sustainability; Doctorado; Edafología.
Ano: 2010
URL: http://hdl.handle.net/10521/60

Sowing depths of brachiaria in intercropping with corn in no tillage planting
Provedor de dados: Engenharia Agrícola
Autores: Gazola,Rodolfo de N.; Melo,Luiz M. M. de; Dinalli,Raíssa P.; Teixeira Filho,Marcelo C. M.; Garcia,Cássia M. de P.
The forage production in crop-livestock integration is critical both for formation of straw for no tillage planting and food for livestock farm. The experiment was conducted in the autumn/winter of 2009 and 2010, in the city of Selvíria -state of Mato Grosso do Sul -MS, Brazil, at Experimental Station of FEIS/UNESP. The objective was to evaluate the optimal depth for deposition of seeds of two Brachiaria species intercropped with corn with emphasis on grain yield and straw. The experimental design was a randomized block design in a factorial scheme 3 x 3, with four replications. The main treatments were two species of Brachiaria (Urochloa brizantha "Marandú" and Urochloa ruziziensis), which seeds were mixed with corn fertilizer and a control treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop-livestock integration; Mechanization; Grain yield; Urochloa brizantha; Urochloa ruziziensis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100016

SEED METERING MECHANISMS AND TRACTOR-SEEDER FORWARD SPEED ON CORN AGRONOMIC COMPONENTS
Provedor de dados: Engenharia Agrícola
Autores: Cortez,Jorge W.; Anghinoni,Matheus; Arcoverde,Sálvio N. S.
ABSTRACT Seed metering system and tractor-seeder forward speed are factors that affect sowing. Therefore, this study aimed to evaluate sowing and agronomic components of corn as a function of seed metering mechanism and tractor-seeder forward speed, in addition to evaluating the yield data obtained from a harvester with a yield monitor. The soil of the area is classified as Distroferric Red Latosol. The experiment was set up in the second crop season of 2018 and treatments consisted of two seed metering mechanisms (M) (pneumatic and mechanical), and tractor-seeder forward speeds (S) (3, 5, 7, and 9 km h−1). The pneumatic system promoted the best longitudinal distribution, with values above 90%, and the increased sowing forward speed reduced normal spacings...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; Pneumatic sowing; Sowing forward speed.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100061

Phenotypic recurrent selection in the common bean (Phaseolus vulgaris L) with carioca-type grains for resistance to the fungi Phaeoisariopsis griseola
Provedor de dados: Genetics and Molecular Biology
Autores: Amaro,Geovani Bernardo; Abreu,Ângela de Fátima Barbosa; Ramalho,Magno Antonio Patto; Silva,Flávia Barbosa.
The efficiency of recurrent selection was assessed in obtaining common bean (Phaseolus vulgaris L) plant lines resistant to the phytopathogenic fungi Phaeoisariopsis griseola. The base bean population was obtained from the partial diallel between seven lines with carioca-type grains and 10 sources of resistance to P. griseola. The plants most resistant to the pathogen were selected in the F2 (S0) generation of the populations (C-0). The best S0:1 plants that presented carioca-type grains were intercrossed to obtain cycle I (C-I). The same procedure was adopted to obtain cycles C-II to C-V. In each recurrent selection cycle, S0:1 progenies selected were also assessed in experiments carried out in Lavras, Brazil, always using as check the Carioca MG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angular-leaf-spot; Grain yield; Heritability; Phaseolus vulgaris; Response to selection.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000400014

Effects of nitrogen application on corn yield after harvesting the apical ear as baby corn
Provedor de dados: Horticultura Brasileira
Autores: Silva,Paulo Sérgio L; Araújo Júnior,Bernardo B; Oliveira,Vianney R; Pontes,Frederico ST; Oliveira,Odaci F.
Removal of the first female inflorescence in corn induces the plant to produce new inflorescences, which allows the first ear to be harvested as baby corn and the second to be harvested as green or mature ear (dry corn). The objective of this study was to compare the following production systems fertilized with nitrogen levels (0, 80, and 160 kg ha-1), applied to corn hybrid AG 1051: baby corn harvesting (BC); green ear harvesting (GC); mature ear harvesting (DC); and harvesting of the first female inflorescence as baby corn + harvesting the other ears as green corn (BC + GC) or as dry corn (BC + DC). A randomized complete block design with split-plots (nitrogen in plots) and nine replicates was used. The BC system provided higher baby corn yields than the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Green corn; Grain yield; Prolificacy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362013000300012

Mimosa caesalpiniifolia intercropping, weeds removal and nitrogen fertilization on maize
Provedor de dados: Horticultura Brasileira
Autores: Monteiro,Alex L; Silva,Paulo SL; Tavella,Leonardo B; Oliveira,Fábio HT; Silva,Paulo IB.
ABSTRACT: Weeding is expensive and laborious, and some weeds may re-establish themselves afterwards. Arboreal leguminous plants can control weeds, and fertilization with nitrogen can increases the competitive ability of the maize. The aim of this work was to evaluate the effects of weed-removal and intercropping with sabiá (Mimosa caesalpiniifolia) on control of weed plants and maize productivity. A randomized complete block design in a split-plot arrangement was used with five replications. Cultivar AG 105, fertilized with nitrogen (30 and 120 kg/ha of N applied to the plots) was subjected to the following treatments (subplots): A) no weeding; B) intercropping with sabiá (30 viable seeds/m2, broadcast between the rows of maize); C) hoeing {20 and 40 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Green corn; Grain yield; Hoeing.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000200175

Irrigation as an alternative to reduce damages caused by defoliation of sweet corn
Provedor de dados: Horticultura Brasileira
Autores: Santos,Osvaldir F; Lima,Sebastião F; Piati,Gabriel Luiz; Barzotto,Gustavo R; Gava,Ricardo.
ABSTRACT Reduction of leaf area significantly affects maize productivity, due to its low plasticity. Thus, appropriate water application can minimize this problem, considering that under favorable water conditions the plant would express its maximum production potential. The aim of this study was to evaluate the influence of irrigation on the productive performance of sweet corn submitted to different defoliation levels at the beginning of crop cycle. The experimental design was a randomized block design, arranged in split plot scheme; plots consisting of four water depths [50, 75, 100 and 125% of crop evapotranspiration (ETc)] and the subplots consisted of three defoliation levels [0% (control); 35% (removal of four fully expanded leaves), 100% (total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Water availability; Leaf area; Grain yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300341

BRSMG Uai: cultivar de feijão tipo carioca com planta de arquitetura ereta.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ABREU, A. de F. B.; RAMALHO, M. A. P.; CARNEIRO, J. E. de S.; MELO, L. C.; PEREIRA, H. S.; SOUZA, T. L. P. O. de; PAULA JÚNIOR, T. J. de; SOUZA, E. A. de; PEREIRA FILHO, I. A.; MARTINS, M.; DEL GIÚDICE, M. P.; VIEIRA, R. F.
A cultivar BRSMG Uai foi obtida pelo método da hibridação em um programa de seleção recorrente visando a obtenção de progênies com grãos tipo carioca, com arquitetura ereta de planta e boa produtividade.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Planta de arquitetura ereta; BRSMG Uai; Phaseolus vulgaris; Feijão; Melhoramento Genético Vegetal; Variedade; Grain yield; Breeding; Varieties; Plant architecture.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1103800

Avaliacao de cultivares de gergelim (Sesamum indicum L.) no cerrado do Distrito Federal (2000)
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: AMABILE, R. F.; COSTA, T. M. C.; FERNANDES, F. D.; ARRIEL, N. H. C.
Resumo; Abstract; Introdução; Material e métodos; Resultados e discussão; Conclusão; Refeências bibliográficas.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Cultivar; Oil content; Sesame; Savanna; Cerrado; Gergelim; Grão; Óleo; Peso; Rendimento; Sesamum Indicum; Grain yield; Varieties.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568245

Desempenho agronômico de hídridos e variedades de milho em diferentes épocas e espaçamentos: opções de plantio para a Região Sul
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MACHADO, J. R. de A.; GUIMARAES, L. J. M.; GUIMARAES, P. E. de O.; TRINDADE, R. dos S.
O trabalho foi desenvolvido na área experimental da Embrapa Trigo, na safra 2017/2018, na forma de Unidades de Observação (UOs), com o objetivo de avaliar híbridos e variedades experimentais e comerciais em dois espaçamentos entre linhas e duas épocas de semeadura. As UOs foram implantadas em espaçamento de 80 cm e 45 cm, em duas épocas de semeadura, sendo a primeira em 19/09/2017 (semeadura do cedo) e a segunda em 24/10/2017 (semeadura do tarde) com colheita realizada, respectivamente, em 28/03/2018 e 25/04/2018. Foram considerados neste trabalho dados de produtividade de grãos (Kg ha-1). Por se tratarem de parcelas maiores, não houve repetição por tratamento, pois a intenção foi simular ao cultivo em área de agricultor. Observou-se que os híbridos...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Zea Mays; Rendimento; Grão; Produtividade; Crops; Grain yield.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124593

Aspectos fenológicos da cultivar de milho BRS-1030 na Região de Paragominas, PA.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ALVES, L. W. R.
bitstream/item/168563/1/CPAF-AP-2017-COT-150-Aspectos-fenologicos.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Rendimento de grão.; Área foliar; Fenologia; Zea mays; Milho.; Leaf area; Phenology; Grain yield.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1079382

Avaliação de híbridos de sorgo granífero no oeste da Bahia.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SILVA, K. J. da; CARNEIRO, G. E. de S.; SANTOS, F. C. dos; MENEZES, C. B. de; LANDAU, E. C.
O objetivo do presente trabalho foi apresentar o desempenho de híbridos de sorgo granífero na região Oeste da Bahia, buscando fomentar o aumento de área da cultura na região e ampliar a oferta de grãos para o Nordeste. Os experimentos para avaliação dos híbridos foram instalados em dois municípios localizados no Oeste Baiano. Em Luís Eduardo Magalhães, foram avaliados 48 híbridos de sorgo graníferos, nas safras 2017/2018 e 2018/2019; e em Jaborandi foram avaliados 11 híbridos na safra 2018/2019. O delineamento experimental utilizado foi o de blocos casualizados. Os dados foram submetidos à análise de variância e foi feita comparação das médias dos híbridos pelo teste de Scott-Knott e Tukey. Os resultados mostraram que a região do Oeste Baiano possui alto...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Potencial produtivo; Cultivo de sucessão; Succession cultivation; Sorghum Bicolor; Produtividade; Rendimento; Grão; Grain yield; Yields.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1135403

Resposta de genótipos de trigo às diferenças de ambientes de clima tropical e temperado em Minas Gerais.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SOARES SOBRINHO, J.; FRONZA, V.; CHAGAS, J. H.; ALBRECHT, J. C.; SCHEEREN, P. L.; CASTRO, R. L. de.
A fronteira para expansão da cultura do trigo representada pelo Brasil Central concentra sua maior área em regiões de clima tropical. No entanto, parte desta área, localizada principalmente no estado de Minas Gerais, é caracterizada pela ocorrência de clima temperado. Em dois locais (Coromandel e Uberaba), de clima tropical, e dois (Madre de Deus de Minas e São Gonçalo do Sapucaí) de clima temperado, foi avaliado o comportamento de 35 genótipos de trigo. As temperaturas mais baixas do clima temperado foram capazes de mitigar os efeitos da brusone e do déficit hídrico, pela menor incidência da doença e pela redução na evapotranspiração, respectivamente, proporcionando rendimento de grãos significativamente maior que nos locais de clima tropical. Assim, a...
Tipo: Folhetos
Palavras-chave: Trigo; Variedade; Clima Tropical; Região Temperada; Grão; Rendimento; Cultivars; Grain yield; Wheat.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1146349

Corn crop performance in an Ultisol compacted by tractor traffic
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Moraes,Moacir Tuzzin de; Levien,Renato; Trein,Carlos Ricardo; Bonetti,João de Andrade; Debiasi,Henrique.
Abstract: The objective of this work was to determine whether compaction by tractor traffic in areas managed under controlled traffic can be limiting to corn crop, under different tillage systems, in a Typic Paleudult of medium texture. Two experiments were carried out, one in the field over two crop seasons and another in a greenhouse. The treatments consisted of minimum tillage with chiselling; no-tillage subjected to one, three, or six passes of a tractor weighing 3.8 Mg; and an area without traffic. Evaluations were performed for soil physico-hydraulic parameters (soil bulk density, penetration resistance, and water retention curve), root and shoot growth, and grain yield. The agricultural traffic increased bulk density, soil penetration resistance,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Grain yield; No-tillage; Root growth; Soil compaction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400464

New wheat genotypes tolerant to aluminum toxicity obtained by mutation induction
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Tulmann Neto,Augusto; Alves,Marcelo Correa; Camargo,Carlos Eduardo de Oliveira; Castro,Jairo Lopes de; Ferreira Filho,Wilson Penteado.
Seed from the sensitive wheat (Triticum aestivumL.) cultivar Anahuac was treated to gamma-ray irradiation and eleven Al3+ tolerant mutants selected. The objective was to compare these mutants to the original Anahuac and to the tolerant wheat cultivars IAC-24 and IAC-60 from 1994 to 1996 in acid (Capão Bonito) and limed (Monte Alegre do Sul) soil field trials, in the State of São Paulo, Brazil. Grain yield and agronomic characteristics were analyzed. All the mutant lines yielded higher than the sensitive Anahuac cultivar in the acid soils of Capão Bonito. Under limed soil conditions, 10 mutants had a similar yield to the original sensitive cultivar and one a lower yield. The majority of the mutants were similar in yield to the tolerant cultivars IAC-24 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acid soil; Liming; Breeding methods; Mutants; Gamma radiation; Agronomic characters; Grain yield; Plant breeding.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001000100008

Growth components and zinc recovery efficiency of upland rice genotypes
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Fageria,Nand Kumar; Baligar,Virupax Chanabasappa.
The objective of this work was to evaluate Zn use efficiency by upland rice genotypes. The experiment was carried out in a greenhouse, with ten upland rice genotypes grown on an Oxisol (Typic Hapludox) with no application, and with application of 10 mg kg-1 Zn, applied as zinc sulfate. Shoot dry weight, grain yield, Zn harvest index, Zn concentration in shoot and in grain were significantly influenced by soil Zn levels and genotypes. However, panicle number and grain harvest index were significantly affected only by genotype. Genotypes CNA8557, CNA8540 and IR42 produced higher grain yield than other genotypes. Genotypes showed significant variability in Zn recovery efficiency. On average, 13% of the applied Zn was recovered by upland rice genotypes....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Grain yield; Grain harvest index; Zinc harvest index.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005001200008

Growth regulator and maize response to the increase in plant density
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Leolato,Lucieli Santini; Sangoi,Luis; Durli,Murilo Miguel; Panison,Fernando; Voss,Ramon.
Abstract: The objective of this work was to evaluate the effect of application of the growth regulator Trinexapac-ethyl on maize response to the increase in plant density at two sowing dates. A field experiment was carried out in the municipality of Lages, state of Santa Catarina, Brazil, during the 2014/2015 and 2015/2016 growing seasons. Two sowing dates (10/15 - preferential, and 12/5 - late), four plant densities (5, 7, 9, and 11 plants m-2), with and without Trinexapac-ethyl application, were tested. The growth regulator was sprayed at a rate of 150 g a.i. ha-1, when hybrid P30F53YH was at the V5 and V10 growth stages. The spraying of Trinexapac-ethyl decreased the stem length above the ear insertion node at both growing seasons. Grain yield ranged...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Grain yield; Trinexapac-ethyl.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001100997

Biomass yield in production systems of soybean sown in succession to annual crops and cover crops
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Pacheco,Leandro Pereira; Miguel,Andressa Selestina Dalla Côrt São; Silva,Rayane Gabriel da; Souza,Edicarlos Damacena de; Petter,Fabiano André; Kappes,Claudinei.
Abstract: The objective of this work was to evaluate the biomass (leaves and stems) production of annual and cover crops sown as second crop, and its effects on soybean yield in succession. The experiment was carried out in the 2014/2015 and 2015/2016 crop seasons. Soybean was sown in the crop season and in the second crop, in a randomized complete block design, in nine production systems (treatments) consisting of annual crops (corn, sunflower, and cowpea) and cover crops (Pennisetum glaucum, Crotalaria breviflora, C. spectabilis, Urochloa ruziziensis, Cajanus cajan, Stylosanthes sp., and U. brizantha), which were grown in monocropping or intercropping systems, besides fallow as a control. Monocropped P. glaucum and U. ruziziensis showed a faster...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; No-tillage; Off-season.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000800582

Arabica coffee response to rates of coated and conventional urea in sandy soil
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Abranches,Jorge Luiz; Soratto,Rogério Peres; Perdoná,Marcos José; Parecido,Renan José.
Abstract: The objective of this work was to evaluate the growth, relative chlorophyll index and nitrogen concentrations in leaves, and the grain yield of arabica coffee (Coffea arabica) fertilized with rates of N as coated and conventional urea, in a sandy soil under rainfed conditions. The experiment was carried out over three crop years, using 'Mundo Novo IAC 388-17-1' coffee, in a randomized complete block design, in a 3×2+1 factorial arrangement, with three treatments with 150, 300, and 600 kg ha-1 N, as coated and conventional urea, and a control without N, with six replicates. Nitrogen increased stem diameter, plant height, N concentrations and relative chlorophyll index in the leaves, as well as grain yield. Over the three crop years, the highest N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Grain yield; Mineral nutrition; Nitrogen; Slow release.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102101

Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Oliveira,Lillian Matias de; Marchesan,Enio; David,Ricardo de; Werle,Isabel Schlegel; Aramburu,Bruno Behenck; Donato,Gabriel; Silva,Anelise Lencina da; Costa,Ivan Francisco Dressler da.
Abstract: The objective of this work was to evaluate the effects of fertilization with nitrogen topdressing and silicates, as well as of the use of fungicides, on the occurrence of rice blast on panicles, milling yield, and whole grains, vitreous grains, and chalky kernels in a flood-irrigated rice cultivar sensitive to the disease. Two experiments were conducted in a randomized complete block design, in a 4×4×2 factorial arrangement, with four replicates: in experiment 1, four doses of nitrogen × four doses of calcium and magnesium silicate on soil × with and without fungicides; and, in experiment 2, four doses of nitrogen × four doses of potassium silicate applied on leaves x with and without fungicides. At the doses above 60 kg ha-1 nitrogen without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Pyricularia oryzae; Grain yield; Whole grains.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102505

Biomass production and grain yield of three sorghum lines difering in drought resistance
Provedor de dados: Phyton: Revista Internacional de Botánica Experimental
Autores: Castro-Nava,S; Ortiz-Cereceres,J; Mendoza-Castillo,M del C; Huerta,AJ.
The aim of this study was to determine the eficiency of drought classification criteria that we previously reported for our grain sorghum genotypes. Two tolerant genotypes of grain sorghum &amp;#091;Sorghum bicolor (L.) Moench&amp;#093; (UAT-124 and UAT-152) and one susceptible (UAT-30) were subjected to drought under greenhouse conditions at either panicle initiation, flag leaf, or flowering. Results showed that the effects of drought depended on when drought stress occurred during development. Biomass of the three sorghum genotypes was significantly reduced at the flag leaf stage (48%) by drought stress, but the greatest reduction occurred in the susceptible genotype UAT-30 (71%). Results showed that biomass accumulation for UAT-124 and UAT-30 was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor L. Moench; Water stress; Drought; Phenology; Biomass accumulation; Grain yield.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572012000200002

Nivel crítico del agua en el suelo para decidir la siembra en agricultura de zonas áridas: (con 4 figuras y 1 tabla)
Provedor de dados: Phyton: Revista Internacional de Botánica Experimental
Autores: López-Martínez,José Dimas; Salazar-Sosa,Enrique; Vázquez-Vázquez,Cirilo; Figueroa-Viramontes,Rafael; Berumen-Padilla,Salvador; Martinez-Rubin,Enrique.
Taking under consideration that potential evapotranspiration normally exceeds the growing season rainfall and that a water shortage can occur unless a reserve of soil water is stored before the crop is planted, it can be concluded that the amount of stored soil water at sowing time is a critical factor in the success of dryland cropping systems. The main aim of this investigation was to know if interaction c2 test is a valuable tool, when taking into account stored soil (0-60 cm depth) water at sowing time and maize grain yield, in making decision for sowing or not sowing at a given time. Data on the amount of soil water at sowing time and maize grain yield from four experiments carried out during 2001 and 2002 at the Ejido Francisco Villa, Lerdo, Durango,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genotypes; Interaction c2 test; Grain yield.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100034

INTERCROPPING CORN WITH A COMBINATION OF TREE SPECIES TO CONTROL WEEDS
Provedor de dados: Planta Daninha
Autores: SILVA,P.S.L.; SILVA,E.M.; SILVA,P.I.B.; FERNANDES,J.P.P.; CHICAS,L.S.
ABSTRACT  The combination of crop residues or crop extracts is often more advantageous in controlling weeds, than the application of each residue or extract singly. This suggests that in intercropping with maize, the combination of tree species can be more advantageous than species isolated in weed control. The objective of this study was to evaluate the effects of intercropping with a combination of leguminous on the weed growth and corn yield. A randomized-block design with split plots (cultivars in plots) and five replicates was established. The cultivars BR 205 and AG 1041 were subject to the following treatments: two weedings (A), intercropping with sabiá (B), gliricidia (C), gliricidia + sabiá (D) and no weeding (E). In the B and C, 30 viable seeds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Gliricidia sepium; Mimosa caesalpiniifolia; Green corn; Grain yield.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000400717

The Effect of Different Weed Management Strategies on the Growth and Yield of Direct-Seeded Dry Rice (Oryza sativa)
Provedor de dados: Planta Daninha
Autores: MUHAMMAD,S.; MUHAMMAD,I.; SAJID,A.; MUHAMMAD,L.; MAQSHOOF,A.; NADEEM,A.
Weed management is a primary concern in direct seeded rice (DSR) cropping because weed growth becomes a major constraint on crop yield. A two year field study was set up to evaluate the effect of various weed control measures on crop growth, grain yield and grain quality of DSR. The experiment involved five different weed control measures: hand weeding, hoeing, inter-row tine cultivation, inter-row spike hoeing and herbicide treatment (Nominee 100 SC). The extent of weed control (compared to a non-weeded control) ranged from 50-95%. The highest crop yield was obtained using hand weeding. Hand weeding, tine cultivation and herbicide treatment raised the number of fertile rice tillers formed per unit area and the thousand grain weight. Tine cultivation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Direct seeded rice; Grain yield; Tine cultivator.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100057

Weed control in corn via intercropping with gliricidia sown by broadcasting
Provedor de dados: Planta Daninha
Autores: Oliveira,A.M; Silva,P.S.L; Albuquerque,C.C; Azevedo,C.M.S.B; Cardoso,M.J; Oliveira,O.F.
There has been interest in reducing the use of herbicides for weed control in order to decrease environmental degradation problems. The objective of this study was to evaluate the effects of gliricidia planting density sown by broadcasting and intercopping on green ear and corn grain yield as well as on weed control. A randomized block design with split-plots and five replicates were adopted. Cultivars AG 1051, BM 2022, and BM 3061, assigned to plots, were submitted to the following treatments: no hoeing, two hoeings (at 20 and 40 days after sowing), and intercropped with gliricidia sown at densities of 10 and 20 seeds m-2. Thirty weed species occurred in the experiment area, with Cucumis anguria as the most frequent ones. Cultivar BM 2022 was the best for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Gliricidia sepium; Green ear yield; Grain yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000300007

Multispecies weed competition and their economic threshold on the wheat crop
Provedor de dados: Planta Daninha
Autores: Gherekhloo,J.; Noroozi,S.; Mazaheri,D.; Ghanbari,A.; Ghannadha,M.R.; Vidal,R.A.; Prado,R. de.
Two field experiments were conducted to evaluate the effects of multispecies weed competition on wheat grain yield and to determine their economic threshold on the crop. The experiments were conducted in 2002, on two sites in Iran: at the Agricultural Research Station on Ferdowsi University of Mashhad (E1) and on the fields of Shirvan's Agricultural College (E2). A 15 x 50 m area of a 15 ha wheat field in E1 and a 15 x 50 m area of a 28 ha wheat field in E2 were selected as experimental sites. These areas were managed like other parts of the fields, except for the use of herbicides. At the beginning of the shooting stage, 30 points were randomly selected by dropping a 50 x 50 cm square marker on each site. The weeds present in E1 were: Avena ludoviciana,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed interference; Competition; Grain yield; Mathematical regression.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000200002

Wild onion (Asphodelus tenuifolius) competition in rainfed chickpea-chickpea cropping system
Provedor de dados: Planta Daninha
Autores: SIBTAIN,M.; TANVEER,A.; JAVAID,M.M.; ALI,H.H.
Chickpea yield potential is limited by weed competition in typical chickpea growing areas of Pakistan where zero tillage crop grown on moisture conserved from rains received during the months of September and August. The objective of this work was to evaluate the growth and yield characteristics of chickpea grown in coexistence with increasing densities of wild onion (Asphodelus tenuifolius). The experiment was comprised of six density levels viz. zero, 20, 40, 80, 160 and 320 plants m-2 of A. tenuifolius. A decrease in chickpea primary and secondary branches per plant, pods per plant, seeds per pod, 100-seed weight and seed yield was observed due to more accumulation of dry matter per increasing densities of A. tenuifolius. The increase in A. tenuifolius...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cicer arietinum; Weed density; Yield components; Grain yield.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100067

Efficacy Evaluation of Fertilizers and Weed Control Practices to Mitigate Wheat Nutrient and Yield Losses
Provedor de dados: Planta Daninha
Autores: NADEEM,M.A.; TANVEER,A.; MAQBOOL,R.; ABBAS,T.; FAROOQ,N.
ABSTRACT: Low fertilizer use efficiency due to inappropriate weed control practices is one of the main causes of poor wheat yield worldwide. A 2 year field experiment was conducted to study the effects of three fertilizer levels and four weed control practices on fertilizer use efficiency and nutrient uptake by wheat and its associated weeds. Fertilizer levels were F0 (zero fertilizer), F1 (75 kg ha-1 N + 50 kg ha-1 P2O5), and F2 (150 kg ha-1 N + 100 kg ha-1 P2O5) and weed control included W1 (weedy check), W2 (pendimethalin applied at 1,031 g a.i. ha-1), W3 (isoproturon + carfentrazone ethyl applied at 750 g a.i. ha-1) and W4 (manual weed control). Different weed control practices significantly reduced the NPK uptake by weeds and increased NPK uptake by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; Herbicides; Fertilizer use efficiency; Nutrients uptake; Losses by weeds.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100229

Effect of cowpea intercropping on weed control and corn yieid
Provedor de dados: Planta Daninha
Autores: Silva,P.S.L.; Oliveira,O.F.; Silva,P.I.B.; Silva,K.M.B.; Braga,J.D.
Herbicides have simplified weed control, but the use of herbicides, besides being costly, resulted in the selection of herbicide-resistant weed biotypes and has become an environmental contamination factor. Herbicide use reduction is one of the goals of modern agriculture, with several alternatives being investigated, including intercropping. The objective of this study was to evaluate the effects of cowpea and corn cultivar intercropping on weed control and corn green-ear (immature ears with 80% humidity grains) and grain yield. A completely randomized block design with split-plots and four replications was used. AG 1051, AG 2060 and PL 6880 corn cultivars (assigned to plots) were submitted to the four treatments: no weeding, two hoe-weeding (22 and 41...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Vigna unguiculata; Cultivars; Green-ear yield; Grain yield.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000300009

Competitive ability of soybean cultivars with horseweed (Conyza bonariensis)
Provedor de dados: Planta Daninha
Autores: Trezzi,M.M.; Balbinot Jr.,A.A.; Benin,G.; Debastiani,F.; Patel,F.; Miotto Jr.,E.
The existence of large areas infested with populations of Conyza spp. resistant to glyphosate in Brazil demands appropriate and integrated management strategies. This experiment aimed to identify soybean cultivars with greater competitive ability with horseweed plants and to determine plant characteristics associated with this ability. The experiment was arranged in a randomized complete block design with split plots. Seven soybean cultivars (CD 225 RR, BRS 232, CD 226 RR, NK 7054 RR, BMX Apollo RR, BRS 245 RR and BRS 255 RR) were allocated in the plots, and two interference situations (absence and 13.3 plants of Conyza m-2, transplanted seven days before soybean planting) in the subplots. The average yield loss due to competition with horseweed was 25%....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conyza spp.; Interference; Competition; Grain yield.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300006

Corn growth and yield in competition with weeds
Provedor de dados: Planta Daninha
Autores: Silva,P.S.L; Silva,P.I.B; Silva,K.M.B; Oliveira,V.R; Pontes Filho,F.S.T.
Although labor is intensive, evaluating the growth of crops may allow a better understanding of crop performance, including the reasons why certain cultivars can compete better with weeds. This study aims at evaluating growth, green ear yield, and grain yield in corn when in competition with weeds. Cultivars AG 1051 and BRS 106 were grown with (two hoeings, at 20 and 40 days after sowing) or without weed control. In order to evaluate crop growth, six collections of the above-ground part and the root system of corn were performed, every 15 days, with the first collection made 30 days after sowing. A randomized complete block design was adopted, with split-split plots (weed control in plots, cultivars in subplots, and collections in sub-subplots) and ten...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Green corn; Grain yield; Dry matter.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000400009

Use of Adjuvants to Optimize the Activity of Two Broad-Spectrum Herbicides for Weed Control in Wheat
Provedor de dados: Planta Daninha
Autores: ABBAS,N.; TANVEER,A.; AHMAD,T.; AMIN,M.
ABSTRACT: Herbicide resistance development among weeds, environmental contamination and health concerns due to the overuse of herbicides have led researchers to focus on ways to reduce herbicides to be sprayed for weed management. Adjuvants are best suited for that purpose, as they accomplish a crucial role in achieving satisfactory control of weeds by maximizing herbicidal activity. A two-year field investigation was carried out at the Agronomic Research Area, in the University of Agriculture, in Faisalabad, Pakistan during the winter of 2014 and 2015, with the objective to optimize the activity of two broad-spectrum herbicides at reduced dose (75% of the label mentioned rate) for weed control in wheat. Minimum weed density, weed dry weight and NPK uptake...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Adjuvants; Grain yield; Benefit-cost ratio.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100325

Effects of weed control through cowpea intercropping on mayze morphology and yield
Provedor de dados: Planta Daninha
Autores: Gomes,J.K.O.; Silva,P.S.L.; Silva,K.M.B.; Rodrigues Filho,F.F.; Santos,V.G.
Intercropping combined with competitive maize cultivars can reduce the use of herbicides to control weeds. The objective of this work was to evaluate the effects of intercropping cowpea and maize, as well as hand-weeding on maize morphology and yield. The experimental design was in randomized complete blocks, with treatments arranged in split-plots and five replications. The plots consisted of four maize cultivars (BA 8512, BA 9012, EX 4001, EX 6004) and the split-plots consisted of the following treatments: no-weeding; twice hand-weeding (20 and 40 days after sowing); and intercropping with cowpea ('Sempre Verde' cultivar), both maize and cowpea sown at the same time. The variables evaluated were: maize fresh green ears and grain yield; characteristics of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Green ears; Grain yield; Competition; Vigna unguiculata (L) Walp.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000300001

GROWTH AND YIELD RESPONSE OF MAIZE (Zea mays) TO INTER AND INTRA-ROW WEED COMPETITION UNDER DIFFERENT FERTILIZER APPLICATION METHODS
Provedor de dados: Planta Daninha
Autores: MAQBOOL,M.M.; TANVEER,A.; ALI,A.; ABBAS,M.N.; IMRAN,M.; AHMAD,M.; ABID,A.A.
A field experiment was conducted for two consecutive years to study the effect of fertilizer application methods and inter and intra-row weed-crop competition durations on density and biomass of different weeds and growth, grain yield and yield components of maize. The experimental treatments comprised of two fertilizer application methods (side placement and below seed placement) and inter and intra-row weed-crop competition durations each for 15, 30, 45, and 60 days after emergence, as well as through the crop growing period. Fertilizer application method didn't affect weed density, biomass, and grain yield of maize. Below seed fertilizer placement generally resulted in less mean weed dry weight and more crop leaf area index, growth rate, grain weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Fertilizer; Grain yield; Maize; Plant growth.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100047

Effects of weed "Reestablishment" after hoeing on corn yields
Provedor de dados: Planta Daninha
Autores: Silva,P.S.L.; Oliveira,A.C.; Oliveira,O.F.; Freitas,F.C.L.; Santos,T.S.
Some growers and researchers sustain the idea that regrowth or root setting of some weeds may occur after hoeing, with detrimental effects over corn. The objective of this study was to evaluate the effects of weed removal from the field, removal after each hoeing, and corn intercropped with gliricidia on weed control and corn yield values. The experimental design consisted of blocks with split-plots and six replicates. Cultivars AG 1051 and BM 2022, planted in the plots, were submitted to the following treatments: no hoeing, two hoeings (at 20 and 40 days after planting), and intercropped with gliricidia. The hoed plots were either submitted to weed removal after the first, second, or both hoeings, or remained without weed removal. In the intercropped...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Gliricidia sepium; Green ear yield; Grain yield.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000200007

Planting density of gliricidia when intercropped with corn for weed control
Provedor de dados: Planta Daninha
Autores: Linhares,E.L.R; Silva,P.S.L; Oliveira,O.F; Oliveira,F.H.T; Torres,S.B.
Reduced use of herbicides that cause environmental pollution problems is of great interest in modern agriculture. Soil mulching with gliricidia (Gliricidia sepium) branches does not have an allelopathic effect on corn, but decreases weed populations. The objective of this study was to evaluate the effects of gliricidia planting density, when grown as an intercrop, on weed control and corn yield parameters. A randomized block design with split-plots and ten replicates was adopted. Corn cultivars AG 1051 and BM 3061 were grown without hoeing, with two hoes (at 24 and 44 days after planting), and intercropped with gliricidia (planted simultaneously with corn, between crop rows, using two seedlings/pit, spaced at 30, 40, or 50 cm). Twenty-one weed species were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Gliricidia sepium; Green ear yield; Grain yield.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000500010

Influence of corn sowing density and gliricidia intercropping on weed control
Provedor de dados: Planta Daninha
Autores: Silva,P.S.L.; Souza,A.D.; Paula,V.F.S.; Oliveira,F.H.T.; Silva,K.M.B.
There is interest in the identification of the best seeding density for new corn hybrids and on reduced use of herbicides for weed control. The objective of this study was to evaluate the effects of seeding density (30, 50, 70, and 90 thousand plants ha-1) and weed control on green ear yield and grain yield in corn cultivar AG 1051. A completely randomized block design was adopted with split-plots (seeding densities assigned to plots) and ten replicates. Weed control was achieved by means of two hoeings and by planting corn intercropped with gliricidia (between corn rows, in pits spaced 0.3 m apart). A "no weeding"treatment was included as well. Increased seeding density increased the total number and weight of marketable green ears and decreased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Gliricidiasepium; Green corn; Grain yield; Hoeing.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000200006

Nitrogen doses and weed control via intercropping with gliricidia for corn production
Provedor de dados: Planta Daninha
Autores: Silva,P.S.L.; Braga,J.D.; Ribeiro,M.S.S.; Oliveira,O.F.; Santos,T.S.
Many studies have demonstrated the beneficial influence of nitrogen doses on corn dry grain yield and green ear yield. Due to a growing concern with environmental degradation, many agricultural practices, adopted in the past, are being reexamined. With regard to weed control, strategies that employ mechanical control, including intercrops, are being the object of renewed interest. The purpose of this study was to evaluate the effects of the application of nitrogen doses (0, 40, 80, and 120 kg N ha-1; as ammonium sulfate) and weed control on the growth, green ear yield, and grain yield of the AG 1051 corn cultivar. A randomized block experimental design with split-plots and nine replications was adopted. In addition to nitrogen rates, the AG 1051 cultivar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Gliricidia sepium; Ammonium sulfate; Green corn; Grain yield.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000300010

Response of Wheat Plants to Combinations of Herbicides with Insecticides and Fungicides
Provedor de dados: Planta Daninha
Autores: VIECELLI,M.; PAGNONCELLI JR.,F.B.; TREZZI,M.M.; CAVALHEIRO,B.M.; GOBETTI,R.C.R.
ABSTRACT: The combination of herbicides and other pesticides can influence weed and crop management. This study aimed to evaluate the response of the combination of different herbicides with insecticides or fungicides of different chemical groups on the development and yield of wheat grains of the cultivar ORS Vintecinco. The experimental design was a randomized block design with three replications. The experiment consisted of 33 treatments, as follows: control without application and application of the herbicides 2,4-D (1,005 g a.e. ha-1), bentazon (756 g a.i. ha-1), metsulfuron-methyl (3 g a.i. ha-1), and pyroxsulam (16 g a.i. ha-1), isolated or combined with the insecticides chlorfluazuron (15 g a.i. ha-1), chlorpyrifos (720 g a.i. ha-1), deltamethrin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Synergism; Antagonism; Tolerance; Grain yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100263

Weed control via intercropping with gliricidia: II. corn crop
Provedor de dados: Planta Daninha
Autores: Silva,P.S.L.; Cunha,T.M.S.; Oliveira,R.C.; Silva,K.M.B.; Oliveira,O.F.
A reduction in herbicide use is one of modern agriculture's main interests and several alternatives are being investigated with this objective, including intercropping. Gliricídia (Gliricidia sepium) mulch has no allelopathic effect on corn or beans but significantly decreased the population of some weed species. The objective of this study was to evaluate green ear and grain yield in corn cultivars as a response to weed control achieved via intercropping with gliricidia. A completely randomized block design with five replicates and split-plots was used. Cultivars AG 1051, AG 2060, BRS 2020, and PL 6880 (assigned to plots) were submitted to the following treatments: no hoeing, hoeing (performed at 20 and 40 days after sowing the corn), and corn...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Gliricidia sepium; Cultivars; Green corn; Grain yield.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000100014

Modeling the Competitive Effect of Euphorbia dracunculoides and Astragalus sp. in Zero Input Rainfed Chickpea
Provedor de dados: Planta Daninha
Autores: IKRAM,R.M.; TANVEER,A.; MAQBOOL,R.; NADEEN,M.A.
ABSTRACT: Brown chickpea (Cicer arietinum L.) is one of the two chickpea types grown in Pakistan and other countries. The critical period for weed removal in a rainfed chickpea system is an important consideration in devising weed management strategies. Field experiments were conducted in the winter season of 2011 and 2012 to determine the extent of yield loss with different periods of weed crop competition. Seven weed crop competition periods (0, 45, 60, 75, 90, 105 and 160 days after sowing - DAS) were used to identify the critical period for weed removal in rainfed chickpea. Experimental plots were naturally infested with Euphorbia dracunculoides and Astragalus sp. in both years. Individual, composite density and dry weights of E. dracunculoides and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Critical period for weed removal; Nutrient losses; Grain yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100221

Alkyl Ether Sulfate Improves Efficacy of Herbicides Against Common Goosefoot and Field Bindweed in Wheat
Provedor de dados: Planta Daninha
Autores: TANVEER,A.; ABBAS,N.; SAFDAR,M.E.; IKRAM,R.M.
ABSTRACT: Tank mixed application of herbicides with adjuvant is required for effective weed management and to reduce herbicide load on agricultural crops. Field studies were conducted to investigate the effect of herbicides at reduced rates with adjuvant on common goosefoot (Chenopodium album) and field bindweed (Convolvulus arvensis) and grain yield of wheat for two consecutive winter seasons. Treatments included post-emergence foliar application of four herbicides viz., fluroxypyr + tribenuron-methyl + clopyralid, mesosulfuron-methyl + iodosulfuron-methyl sodium, bromoxynil + MCPA, iodosulfuron-methyl sodium (pre mixed formulations) at their recommended rates 244.5, 14.2, 444.6, 10 g a.i. ha-1, respectively and 25% reduced rates with alkyl ether sulfate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adjuvant; Grain yield; Herbicides; Wheat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100283

Grain Yield Prediction of Henan Province Based on Spatio-temporal Regression Model
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Liu,   Qin-pu.
By using correlation analysis method, regression analysis method and time sequence method, we combine time and space, to establish grain geld spatio-temporal regression prediction model of Henan Province and ail prefecture-level cities. At first, we use the grain geld in prefecture-level cities of Henan in the year 2000 and 2005, to establish regression model, and then taking the grain yield in one year as independent variable, we predict the grain yield in the fifth year afterwards. Taking the dependent variable value as independent variable again, we predict the grain geld at an interval of the same years, and based on this, predict year by year forward until the year we need. The research shows that the grain yield of Henan Province in the year 2015 and...
Tipo: Article
Palavras-chave: Spatio-temporal regression model; Moving prediction year by year; Grain yield; Henan Province; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/121285

Maize response to nitrogen fertilization timing in two tillage systems in a soil with high organic matter content
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Sangoi,Luis; Ernani,Paulo Roberto; Silva,Paulo Regis Ferreira da.
No-tillage systems, associated to black oat as preceding cover crop, have been increasingly adopted. This has motivated anticipated maize nitrogen fertilization, transferring it from the side-dress system at the stage when plants have five to six expanded leaves to when the preceding cover crop is eliminated or to maize sowing. This study was conducted to evaluate the effects of soil tillage system and timing of N fertilization on maize grain yield and agronomic efficiency of N applied to a soil with high organic matter content. A three-year field experiment was conducted in Lages, state of Santa Catarina, from 1999 onwards. Treatments were set up in a split plot arrangement. Two soil tillage systems were tested in the main plots: conventional tillage (CT)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Nitrogen; Immobilization; Leaching; Grain yield.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832007000300011

Performance of Flooded Rice Grown in Succession to Winter Cover Crops
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Luz,Silmara da Correia; Silva,Paulo Regis Ferreira da; Boeni,Madalena; Bredemeier,Christian; Anghinoni,Ibanor; Menegati,Guilherme Batista; Maass,Matheus Barreto; Miozzo,Laís Correa.
ABSTRACT: Mean grain yield of flooded rice in southern Brazil has increased in recent years due to the use of high-yield cultivars and improvement of crop management practices. Nevertheless, stagnation in grain yields has been observed in some rice-producing regions. Adoption of conservation tillage systems based on cover crops may be a strategy to increase rice grain yield potential. The objective of the present study was to evaluate the effect of winter cover crops on initial establishment, development, and grain yield of flooded rice (Oryza sativa L.) grown under different fertilization levels and no-tillage. A field experiment was carried out for three consecutive years (2010/11, 2011/12, and 2012/13) in Cachoeirinha, Rio Grande do Sul, South Brazil....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; Plant development; Fertilizer rate; Fertilization response.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100509

Response of irrigated wheat cultivars to different nitrogen rates and sources
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Teixeira Filho,Marcelo Carvalho Minhoto; Buzetti,Salatiér; Andreotti,Marcelo; Sá,Marco Eustáquio de; Arf,Orivaldo; Megda,Márcio Mohamed.
High wheat yields require good N fertilization management. The objective of this study was to evaluate the effects of different N applications at sowing using Entec (N source with nitrification inhibitor) and urea (traditional N source) at covering, on four wheat cultivars. The experiment was conducted in a randomized block design in a factorial scheme, with four replications, at the Experimental Station of the Faculdade de Engenharia de Ilha Solteira - UNESP, on a dystrophic, epi-eutrophic alic Red Latosol with loamy texture, formerly under savannah vegetation. Four N rates (0, 60, 120, and 180 kg ha-1) were tested, applied at sowing in the case of Entec and top-dressed 40 days after plant emergence in the case of urea, and the four wheat cultivars E 21,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Savannah soil; Entec; Urea; Grain yield; Yield components.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500023

Reference Values of Grain Nutrient Content and Removal for Corn
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Duarte,Aildson Pereira; Abreu,Mônica Ferreira de; Francisco,Eros Artur Bohac; Gitti,Douglas de Castilho; Barth,Gabriel; Kappes,Claudinei.
ABSTRACT: Unchanged reference values of grain nutrient contents for corn have been used for over 20 years, despite yield increases, the development of new hybrids, and modifications to cropping systems, especially the establishment of in-season second crops and the wide adoption of no-tillage. This study measured macro- and micronutrient contents in corn grains from different regions, in the first (summer) and second (fall) crop, to update the reference values of estimated nutrient removal. A secondary objective was to determine whether there were correlations between grain nutrient contents and grain yields and densities. In this study, 175 corn grain samples of experiments on cultivar evaluation and 22 samples from soil management trials from five states...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corn grains; Mineral nutrient contents; Grain yield; Grain density.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100517

Effects of Long-Term Fertilization Management Practices on Soil Microbial Carbon and Microbial Biomass in Paddy Soil at Various Stages of Rice Growth
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Xu,Yilan; Tang,Haiming; Xiao,Xiaoping; Li,Weiyan; Li,Chao; Sun,Geng; Cheng,Kaikai.
ABSTRACT Soil microbial biomass plays a significant role in soils, and it is often used as an early indicator of change in soil quality. Soil microbial biomass is affected by different fertilization management practices. Therefore, the impact of different long-term fertilization management practices on the soil organic carbon (SOC) content, soil microbial biomass carbon (SMBC), and soil microbial biomass nitrogen (SMBN), as well as the soil microbial quotient (SMQ) in the tilled layer (0.00-0.20 m) were studied in the present paper, together with grain yield, in a double-cropping rice (Oryza sativa L.) system. The experiment in NingXiang county of Hunan Province, China, begin in 1986, and the experiment included five fertilization treatments: without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paddy field; Fertilizer regime; Double-cropping rice; Soil organic carbon; Grain yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100411

Attributes of irrigated rice as affected by soil sodicity and potassic fertilizer application
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Carmona,Felipe de Campos; Anghinoni,Ibanor; Holzschuh,Marquel Jonas; Martins,Amanda Posselt.
Soils of the coastal plains of Rio Grande do Sul, Brazil, are affected by salinization, which can hamper the establishment and development of crops in general, including rice. The application of high doses of KCl may aggravate the crop damage, due to the high saline content of this fertilizer. This study aimed to evaluate the effect of K fertilizer management on some properties of rice plant, grown in soils with different sodicity levels, and determine which attribute is best related to yield. The field study was conducted in four Albaqualfs with exchangeable Na percentages of 5.6, 9.0, 21 and 32 %. The management of KCl fertilizer consisted of the application of 90 kg ha-1 K2O broadcast, 90 kg ha-1 K2O in the row and 45 kg ha-1 K2O in the row + 45 kg ha-1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sodium; Potassium; Oryza sativa L.; Density; Spikelet sterility; Grain yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300023

Do Rates and Splitting of Phosphogypsum Applications Influence the Soil and Annual Crops in a No-Tillage System?
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Vicensi,Marcelo; Müller,Marcelo Marques Lopes; Kawakami,Jackson; Nascimento,Ronaldo do; Michalovicz,Leandro; Lopes,Christian.
ABSTRACT Applications of phosphogypsum (PG) provide nutrients to the soil and reduce Al3+ activity, favoring soil fertility and root growth, but allow Mg2+ mobilization through the soil profile, resulting in variations in the PG rate required to achieve the optimum crop yield. This study evaluated the effect of application rates and splitting of PG on soil fertility of a Typic Hapludox, as well as the influence on annual crops under no-tillage. Using a (4 × 3) + 1 factorial structure, the treatments consisted of four PG rates (3, 6, 9, and 12 Mg ha-1) and three split applications (P1 = 100 % in 2009; P2 = 50+50 % in 2009 and 2010; P3 = 33+33+33 % in 2009, 2010 and 2011), plus a control without PG. The soil was sampled six months after the last PG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium sulfate; Calcium/magnesium ratio; Grain yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100515

Modern High-Yielding Maize, Wheat and Soybean Cultivars in Response to Gypsum and Lime Application on No-Till Oxisol
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Nora,Douglas Dalla; Amado,Telmo Jorge Carneiro; Nicoloso,Rodrigo da Silveira; Gruhn,Eduardo Müller.
ABSTRACT Modern maize, wheat, and soybean cultivars are usually characterized by a short cycle, high shoot-root ratio, and high responsiveness to nutrient input. Continuous no-tillage management (NTS) frequently leads to a steep gradient in soil chemical quality with depth, thus decreasing yield under conditions of acid subsoil and water stress. This study aimed to evaluate the effect of gypsum, applied separately or in combination with lime, on the yield of cultivars used in the state of Rio Grande do Sul, Brazil. The study consisted of four experiments conducted on a typic Hapludox under NTS. The experiment was arranged in a randomized block design with three replications. Experiments I and II were carried out on soils with a satisfactory chemical soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Base saturation; Al saturation; Root zone; Grain yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100530

Agronomic performance of canola submitted to desiccation with herbicides at different maturation stages
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Rosa,Willian B.; Duarte Júnior,José B.; Perego,Ivonei; Almeida,Bruno H. de; Costa,Antonio C. T. da; Tomm,Gilberto O.
ABSTRACT Uneven maturation in canola is an important challenge for its management in regions subject to frost and high rainfall at the end of the cycle. In order to identify practices to maximize grain yield under these growing conditions, this work evaluated the effects of desiccation with herbicides at different phenological stages on Hyola 433, one of the most commonly used hybrids in Brazil. The experiment was conducted in a randomized block design with four repetitions in a 6 x 4 factorial scheme, with five herbicides: paraquat, diquat and ammonium glufosinate at dose of 400 g a.i. ha-1, glyphosate at 1,440 g a.i. ha-1 and saflufenacil at 70 g a.i. ha-1, plus the control, at four phenological stages of silique maturation (G2, G3, G4 and G5)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Harvest antecipation; Grain yield; Oil content.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000600419

Nitrogen as top-dressing and sowing densities on agronomic characteristics of maize crop
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Serpa,Antoniele de F.; Mendes,Marcelo C.; Faria,Marcos V.; Ávila,Fabricio W. de; Szeuczuk,Kathia; Albuquerque,Carlos J. B.
ABSTRACT The main objective of this study was to evaluate the agronomic characteristics of commercial maize hybrids with modern and old architecture, under the influence of nitrogen (N) as top dressing with different plant populations. Two independent experiments were conducted, one in the municipality of Guarapuava (reduced spacing = 0.45 m) and the other in the municipality of Laranjeiras do Sul (conventional spacing = 0.90 m), in the Paraná state, Brazil, in the 2012/2013 growing seasons. The experiments were set in a randomized block design, with three replicates, in a factorial scheme (6 x 3 x 3), corresponding to six maize hybrids (with modern and old architecture), three plant populations (60000, 75000 and 90000 plants ha-1) and three N doses as top...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant architecture; Grain yield; Zea mays.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001000703

Production components of corn as function of seed distribution along the planting row
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Silva,Flavio H. da; Cunha,Paulo C. R. da; Almeida,André C. de S.; Araújo,Lucas da S.; Jakelaitis,Adriano; Silveira,Pedro M. da.
ABSTRACT High corn yields in high-tech systems are related to proper crop implementation. This study aimed to evaluate the effects of variability in the distribution of seeds along the planting row on corn production components. The study was conducted under Cerrado conditions in the municipality of Urutaí, GO, Brazil. The experimental design was randomized blocks in a 5 x 2 factorial scheme, with four replicates. The effects of five coefficients of variation (0, 20, 40, 60 and 80%) of non-uniformity in the spatial distribution of seeds along the planting row of two corn hybrids (P30F53HX and P3646HX) were evaluated. No interactions were observed for the analysed corn variables. However, as the non-uniformity in seed distribution along the planting row...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coefficient of variation; Grain yield; Non-uniformity; Zea mays.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001201172

Soybean growth affected by seeding rate and mineral nitrogen
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Werner,Flávia; Balbinot Junior,Alvadi A.; Ferreira,André S.; Silva,Marcelo A. de A. e; Debiasi,Henrique; Franchini,Julio C.
ABSTRACT This study aimed to evaluate the effect of seeding rates and nitrogen (N) fertilization on plant growth in soybean cultivar with indeterminate growth habit. Two experiments were conducted in the 2013/14 and 2014/15 growing seasons, in a complete block design with split-plot scheme and six replicates. Four seeding rates (150, 300, 440 and 560 000 viable seeds ha-1) and two N doses (0 and 45 kg ha-1) were allocated in the plots and subplots, respectively. The cultivar NK7059 RR was used. The following traits were assessed: leaf, stem and total shoot dry matter, leaf/stem dry matter ratio, stem and leaf N content, SPAD index, plant height, first pod height, number of branches per plant and grain yield. Soybean growth is not affected by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; Plant spatial arrangement; Nitrogen fertilization; Grain yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000800734

Agronomic characteristics of common bean and castor bean hybrids in intercropping and monocropping
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Lisboa,Cristiane F.; Silva,Deyner D. A.; Teixeira,Itamar R.; Silva,Alessandro G. da; Mota,José H.
ABSTRACT Common bean has great importance in the Brazilian economy and castor bean is still emerging in Midwestern Brazil, but with great potential of exploitation by farmers due to the prevailing climatic conditions and flat topography. Hence, this study aimed to evaluate the agronomic characteristics of common bean cultivars and castor bean hybrids in intercropping and monocropping under the edaphoclimatic conditions of the Cerrado region. The randomized block design was used in 4 x 2 + 6 factorial scheme, with three replicates. Treatments were composed of four cultivars of common beans (BRS Pérola, BRS Esteio, BRSMG Realce and BRS Pitanga) intercropped with two castor bean hybrids (Tamar and Ag Ima), plus the respective crops in monocropping. In common...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris L.; Ricinus communis L.; Association of crops; Grain yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300200

Do the application forms and doses of boron affect wheat crops?
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Galindo,Fernando S.; Teixeira Filho,Marcelo C. M.; Buzetti,Salatiér; Boleta,Eduardo H. M.; Rodrigues,Willian L.; Rosa,Alexandre R. M.
ABSTRACT Boron is one of the most limiting micronutrients in the grain production system in Brazil. Thus, the objective of this study was to evaluate the effects of the application forms and doses of boron on the concentration of this nutrient in the leaves, straw, and grains of wheat, as well as the production components and grain yield. The residual effect of boron in the soil was also evaluated. An experiment was conducted in a no-tillage system in Oxisol with clay texture in Selvíria, Mato Grosso do Sul. The experimental design was a randomized block design with four replicates arranged in a 4 x 3 factorial scheme. Four doses of boron (0, 1, 2, and 4 kg ha-1) were applied with a boric acid source (B = 17%) and three application forms: a) during the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Borated fertilization; Boron time application; Boron concentration in aerial part; Grain yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900597

Tolerance of upland rice genotypes to water deficit
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Guimarães,Cleber M.; Stone,Luís F.; Rangel,Paulo H. N.; Silva,Ana C. de L.
Water deficit is one of the environmental factors that cause a great reduction in the upland rice grain yield. The objective of this study was to evaluate genotypes of upland rice with broad genetic diversity for tolerance to this stress and to identify secondary traits for evaluation of this tolerance. Sixty-four genotypes were evaluated during two years at the Experiment Station of EMATER, in Porangatu, GO, under well-watered and water deficit conditions. The genotypes showed differences in grain yield and were influenced differently by the water treatments, both under a mild water deficit in the first year and under a severe one in the second year. The genotype grain yield under water deficiency was significantly and positively correlated with tiller...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Irrigation; Grain yield; Leaf temperature.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000800001

Nitrogen management, cultivars and growing environments on wheat grain quality
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Silva,Raphael R.; Zucareli,Claudemir; Fonseca,Inês C. de B.; Riede,Carlos R.; Gazola,Diego.
ABSTRACT The aim of this study was to evaluate the influence of nitrogen (N) fertilization, environment and cultivars on the protein concentration, sodium dodecyl sulfate sedimentation test (SDSS) volume and falling number in wheat. The experimental design was a randomized blocks in split plot scheme with four repetions. Four wheat genotypes were evaluated under six N managements in four enviroment (subplots). The wheat genotypes evaluated were IPR Catuara TM, BRS Gaivota, Quartzo and CD 120. Protein concentration, SDS sedimentation test, falling number and grain yield were evaluated. Combined analysis of variance for the four environment was performed and means were compared by Tukey test at p ≤ 0.05. The environmental effect is greater than the genotype...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Grain yield; Urea; Ammonium sulfate.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001100826

Doses and application methods of Azospirillum brasilense in irrigated upland rice
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Garcia,Nayara F. S.; Arf,Orivaldo; Portugal,José R.; Peres,Amanda R.; Rodrigues,Mayara; Penteado,Mariele de S.
ABSTRACT The study was carried out in Selvíria-MS, in the 2011/12 and 2012/13 agricultural years, aiming to evaluate the efficiency of Azospirillum brasilense in nitrogen fixation in upland rice, as a function of doses and application methods of the inoculant containing this diazotrophic bacterium. The experimental design was randomized blocks, arranged in a 4 x 4 factorial scheme, with 4 doses of inoculant (control without inoculation, 100, 200 and 300 mL of the commercial product ha-1) and 4 application methods (seed inoculation, application in the sowing furrow, soil spraying after sowing, and foliar spraying at the beginning of plant tillering), with 4 replicates. During the experiment, the agronomic characteristics, production components and yield of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; Diazotrophic; Cv. IAC 202; Nitrogen fixation; Grain yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001100990

Agronomic performance of maize hybrids under supplemental irrigation depths
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Ben,Luis H. B.; Peiter,Marcia X.; Robaina,Adroaldo D.; Kirchner,Jardel H.; Mezzomo,Wellington; Pimenta,Bruna D.
ABSTRACT The choice of a maize hybrid, considering the technology level and irrigation management, contributes to the improvement of the plant productivity and water use efficiency (WUE). Thus, the objective of this study was to evaluate the effects of irrigation depths on production components, grain yield, technical efficiency, and WUE in maize hybrids. The experiment was conducted in Santiago, RS state, Brazil, in the 2015/2016 and 2016/2017 crop seasons, using a randomized block design in factorial scheme, consisting of five irrigation depths (0, 50, 75, 100 and 125% of crop evapotranspiration - ETc) and four maize hybrids in crop season I (2015/2016), and six maize hybrids in crop season II (2016/2017). The number of ears per plant, number of grains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water deficit; Zea mays L.; Water use efficiency; Genotypes; Grain yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700524

Sowing operation direction and population densities in corn growing
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Corrêa,Rafael D. G.; Furlani,Carlos E. A.; Zerbato,Cristiano; Oliveira,Danilo T. de; Noronha,Rafael H. de F.; Warikoda,Newton K.
ABSTRACT Among the factors that may influence corn yield are sowing operation direction and plant population, since they alter the shade index between crop rows, and consequently the efficiency of interception of the photosynthetically active radiation by the leaves of plants. The aim of this study was to evaluate the influence of sowing direction and plant populations on P2830VYH hybrid corn yield. The experiment was conducted at the facilities of FCAV-UNESP, latitude 21º 14’ S and longitude 48º 16’ W in Jaboticabal (SP). The treatments were composed of three sowing directions (North-South, Northeast-Southwest, and East-West) and three population densities (40,000, 60,000 and 80,000 plants ha-1). The treatment with 80,000 plants ha-1 had the lowest cost...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Sowing configuration; Plant population; Grain yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300183

Rapeseed population arrangement defined by adaptability and stability parameters
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Krüger,Cleusa A. M. B.; Medeiros,Sandro L. P.; Silva,José A. G. da; Dalmago,Genei A.; Valentini,Ana P. F.; Wagner,Juliano F.
ABSTRACT The objective of this study was to identify the plant arrangement that allows greater grain yield with adaptability and stability of rapeseed hybrids. The experiments were conducted in randomized block design with four replicates and the 12 treatments consisted of combination of inter-row spacings (0.20, 0.40, and 0.60 m) and plant densities (20, 40, 60 and 80 plants m-2). The hybrids Hyola 432 (early cycle) and Hyola 61 (medium cycle) were cultivated in three growing seasons (2008, 2009 and 2010). Grain yield was evaluated based on the parameters adaptability and stability according to the models of Wricke and Eberhart &amp; Russell. The plant arrangement for obtaining higher grain yield depends on the cultivated genotype. Higher grain yield was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica napus L.; Inter-row spacing; Plant density; Grain yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100036

Direct effects of soybean seed vigor on weed competition
Provedor de dados: Revista Brasileira de Sementes
Autores: Dias,Marcos Altomani Neves; Pinto,Tais Leite Ferreira; Mondo,Vitor Henrique Vaz; Cicero,Silvio Moure; Pedrini,Leticia Gomes.
Seed vigor is one of the factors that determines the speed and uniformity of seedling emergence and initial plant growth, which are crucial aspects in the competition against weeds. The objective of this study was to verify the direct effects of soybean seed vigor on weed competition and grain yield. A field experiment was conducted with three seed lots of the "Conquista" cultivar, previously characterized by physiological tests as having high, intermediate and low vigor. The experiment was divided into weeded and unweeded plots with six treatments. Crop plant height, weed dry mass accumulation and crop grain yield data were recorded. Seed vigor did not affect plant height and grain yield. Plants which developed from seeds with high and intermediate vigor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; Physiological potential; Grain yield; Crop interference.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222011000200017

Yield adaptability and stability of semi-prostrate cowpea genotypes in the Northeast region of Brazil by REML/BLUP
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Rocha,Maurisrael de Moura; Damasceno-Silva,Kaesel Jackson; Menezes-Júnior,José Ângelo Nogueira de; Carvalho,Hélio Wilson Lemos de; Costa,Antônio Félix da; Lima,João Maria Pinheiro de; Santos,João Felinto dos; Bertini,Cândida Hermínia Campos de Magalhães; Passos,Adriana Rodrigues; Morais,Otoniel Magalhães.
ABSTRACT Cowpea is grown in different environmental conditions of the Northeast region of Brazil. Thus, selecting and developing cultivars with high yield, stability, and adaptability for this region is necessary due to the genotype × environment interaction. The objective of this work was to select cowpea lines of semi-prostrate plant simultaneously for high yield, adaptability, and genotypic stability in the Northeast region of Brazil by the REML/BLUP procedure. Twenty semi-prostrate genotypes-16 lines and four cultivars-were evaluated in 36 environments of the Northeast region from 2013-2015. The experiments were carried out under rainfed conditions in a completely randomized block design with four replications. The adaptability and genotypic stability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; Grain yield; Genotype × environment interaction; Mixed models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500879

Bayesian AMMI applied to food-type soybean multi-environment trials
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Freiria,Gustavo Henrique; Gonçalves,Leandro Simões Azeredo; Zeffa,Douglas Mariani; Lima,Wilmar Ferreira; Fonseca Júnior,Nelson da Silva; Prete,Cássio Egídio Cavenaghi; Fonseca,Inês Cristina de Batista.
ABSTRACT A complicating factor for the selection of plant strains is the influence of a genotype-environment (GE) interaction. The Bayesian approach is a tool to increase the efficiency of adaptability and stability methodologies. In this context, the objective of this study was to evaluate the linear and bi-linear parameters of the additive main effects and multiplicative interaction (AMMI) analysis using the Bayesian approach for selection of food-type soybean genotypes in multi-environment trials. The grain yields of five lipoxygenase-free lines intended for human consumption of from the soybean breeding program of the Londrina State University and two commercial standards (BRS 257 and BMX Potência RR) were evaluated in four counties of the State of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Bayesian inference; Genotype - environment; Functional food; Grain yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400417

Agronomic performance of the cowpea under different irrigation depths and row spacing
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Costa Junior,Manoel de Jesus Nunes da; Bastos,Edson Alves; Cardoso,Milton José; Andrade Júnior,Aderson Soares de.
ABSTRACT The cowpea is of great socioeconomic importance in the North, Northeast and Mid-West of Brazil, and its irrigated farming has recently been on the increase in these regions. The aim of this study was to evaluate the agronomic performance of the cowpea 'BRS Tumucumaque' for different row spacings and irrigation depths, under the conditions of soil and climate of Teresina, in the State of Piauí. The experiment was carried out from August to November 2014, in a Yellow Argisol at the Experimental Area of Embrapa Meio-Norte in Teresina. The experimental design was of randomised blocks in subdivided lots, with four replications. The treatments consisted of five irrigation depths (40% ETo, 70% ETo, 100% ETo, 130% ETo and 160% ETo) in the main plot, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; Grain yield; Irrigation management; Plant density; BRS Tumucumaque.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500774

Diallel analysis of tropical and temperate sweet and supersweet corn inbred lines
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Suzukawa,Andréia Kazumi; Pereira,Carolina Bertuzzi; Garcia,Mayara Mariana; Contreras-Soto,Rodrigo Iván; Zeffa,Douglas Mariani; Coan,Marlon Mathias Dacal; Scapim,Carlos Alberto.
ABSTRACT The number of sweet corn cultivars adapted to the climatic conditions and with agronomic traits recommended to the Brazilian market is still limited. Thus, the aim was to investigate the general and specific combining ability (GCA and SCA, respectively) in relation to the grain yield (GY) and total soluble solid (TSS) contents of seven lines of sweet corn (su1) and eight lines of supersweet corn (sh2) by diallel crosses. For TSS, the inbred lines SC6 and SC7 of sweet corn, and SSC7 and SSC8 of supersweet corn showed higher GCA effect. For GY, the inbred lines SC1 and SC2 of sweet corn and SSC4 and SSC6 of supersweet corn showed higher GCA effect. For TSS in sweet corn, the hybrids '4 × 6' and '1 × 7' showed the superior Ŝij estimates across all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L; Saccharata; General and specific combining ability; Grain yield; Total soluble solids.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400607

Zinc fertilization in cowpea cultivars
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Melo,Francisco de Brito; Cardoso,Milton José; Andrade Júnior,Aderson Soares de; Ribeiro,Valdenir Queiroz.
ABSTRACT Zinc (Zn) is an essential micronutrient for plants, due to its role as a functional, structural, or regulatory cofactor in a large number of enzymes. The element is necessary for the synthesis of tryptophan, which is a precursor of indoleacetic acid. The aim of this study was to evaluate the behavior of two cowpea cultivars fertilized with four doses of Zn (0.0, 2.0, 4.0, and 6.0 kg of Zn ha-1) regarding dry grain yield (PGS), in addition to quantifying leaf and grain Zn content and grain crude protein. The experiment was conducted in the town of Brejo, in the state of Maranhão, Brazil. A 4 x 2 factorial scheme was used with four replications. Response functions were adjusted by calculating the Zn doses which provided a maximum technical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Vigna unguiculata (L.) Walp; Grain yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500739

Adaptability and yield stability of cowpea elite lines of semi-prostrate growth habit in the cerrado biome
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Sousa,Massaine Bandeira e; Damasceno-Silva,Kaesel Jackson; Rocha,Maurisrael de Moura; Menezes Júnior,José Ângelo Nogueira de; Lima,Laíze Raphaelle Lemos.
ABSTRACT The effects of the genotype × environment interaction can be reduced by using cultivars with high adaptability and good yield stability. Studies on this subject allow identification of genotypes of predictable behavior, and responsive to environmental variations in specific and general conditions, in favorable or unfavorable environments. The objective of this work was to evaluate the adaptability and phenotypic stability of cowpea elite lines of semi-prostrate growth habit in the Cerrado biome in Brazil. Twenty cowpea genotypes of semi-prostrate growth habit were evaluated in nine VCU (value for cultivation and use) tests from 2010 to 2012. Grain yield data were subjected to analysis of variance, and stability and adaptability analyses were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; Genotype × Environment Interaction; Grain yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500832

Yield adaptability and stability of semi-erect cowpea genotypes in the Northeast region of Brazil by REML/BLUP
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Rocha,Maurisrael de Moura; Damasceno-Silva,Kaesel Jackson; Menezes-Júnior,José Ângelo Nogueira de; Carvalho,Hélio Wilson Lemos de; Costa,Antônio Félix da; Lima,João Maria Pinheiro de; Santos,João Felinto dos; Bertini,Cândida Hermínia Campos de Magalhães; Passos,Adriana Rodrigues; Morais,Otoniel Magalhães.
ABSTRACT Cowpea is grown in the various soil and climatic conditions of the Northeast region of Brazil. Thus, selecting and developing cultivars with high yield, stability, and adaptability for this region is necessary due to the genotype × environment interaction. The objective of this work was to select cowpea lines of semi-erect plant simultaneously for high yield, adaptability, and genotypic stability in the Northeast region of Brazil by the REML/BLUP procedure. Twenty semi-erect genotypes-15 lines and five cultivars-were evaluated in 37 environments of the Northeast region from 2013-2015. The experiments were carried out under rainfed conditions in a randomized complete block design with four replications. The adaptability and genotypic stability were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; Grain yield; Genotype × environment interaction; Mixed models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500862

Combining ability of inbred lines of maize and stability of their respective single-crosses
Provedor de dados: Scientia Agricola
Autores: Aguiar,Aurélio Mendes; Carlini-Garcia,Luciana Aparecida; Silva,Adelmo Resende da; Santos,Mateus Figueiredo; Garcia,Antonio Augusto Franco; Souza Jr.,Cláudio Lopes de.
The utilization of diallel crosses for identification of superior combinations is a common practice in maize (Zea mays L.) breeding programs. This methodology allows the estimation of the combining ability of genotypes being evaluated. In this work, five inbred lines were evaluated as to their general (GCA) and specific (SCA) combining abilities, by using a complete diallel scheme. The single-crosses produced between these inbred lines were evaluated in seven environments, along with two checks, by using a randomized complete block design. Traits analized were: grain yield, plant height, ear height, ear placement, and prolificacy. A diallel analysis was carried out, following an adaptation of Griffing's method IV, in addition to hybrid stability and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diallel crosses; Genotype vs. environment interaction; Grain yield; Adaptability.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100013

Upland rice: phenotypic diversity for drought tolerance
Provedor de dados: Scientia Agricola
Autores: Lanna,Anna Cristina; Coelho,Gesimária Ribeiro Costa; Moreira,Alécio Souza; Terra,Thiago Gledson Rios; Brondani,Claudio; Saraiva,Gabriel Rios; Lemos,Frederico da Silva; Guimarães,Paulo Henrique Ramos; Morais Júnior,Odilon Peixoto; Vianello,Rosana Pereira.
ABSTRACT: Upland rice is cultivated mostly in Latin America and Africa by small farmers and in areas with risk of dry spells. This study evaluated morphophysiological mechanisms of upland rice associated to drought adaptation. A set of 25 upland rice genotypes were grown in a plant phenotyping platform during 2015 and 2017 under regular irrigation and water restriction. We evaluated morphophysiological traits in shoots (vegetative structures growth, gas exchange, water use efficiency, carboxylation efficiency, water status) and roots (length, surface area, volume and diameter), as well as agronomic traits (grain yield and its components). There was a reduction in grain yield by up to 54 % and 58 % in 2015 and 2017, respectively, under water deficit. Five...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; Gas exchange; Water status; Root system; Vegetative morphology.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000500603

Performance of dihaploid wheat lines obtained via anther culture
Provedor de dados: Scientia Agricola
Autores: Salomon,Marcus Vinicius; Camargo,Carlos Eduardo de Oliveira; Petinelli Jr.,Armando; Azevedo Filho,Joaquim Adelino de.
The anther culture technique has been used in breeding programs to obtain haploid plants from hybrid plants of F1 generation and to develop more efficiently wheat cultivars. To study the behavior of dihaploid wheat lines and two check cultivars, IAC-24 and IAC-289, experiments were carried out under sprinkler irrigation at Monte Alegre do Sul, SP, Brazil, in an Haplic Acrisol and at Tatuí, SP, Brazil, in a Rhodic Ferrasol, during the years 1999 and 2000. Genotypes were evaluated for grain yield, 100 grain weight, plant height, resistance to leaf rust (Puccinia recondita f. sp. tritici Rob. Desm.) and lodging. The genotypes were also evaluated under laboratory conditions for their Al+3 toxicity tolerance using nutrient solutions. The line 8, originated from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; 100 grain weight; Plant height; Lodging; Tolerance to aluminum.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100007

Breeding common bean populations for traits using selection index
Provedor de dados: Scientia Agricola
Autores: Lima,Dayane Cristina; Abreu,Ângela de Fátima Barbosa; Ferreira,Ricardo Augusto Diniz Cabral; Ramalho,Magno Antonio Patto.
A common bean (Phaseolus vulgarisL.) cultivar must combine desirable genotypes for several traits in order to be accepted by producers and consumers. This study aimed to evaluate selection efficiency when segregating bean populations for traits, by means of a selection index, in order to obtain superior progenies for traits considered. A total of 16 populations from the F4 and F5generations were evaluated in 2011 and 2012, respectively. The traits evaluated were plant architecture, plant disease, grain type and yield. Using standard scores (Z), the sum of the four traits (∑Z) was obtained and, based on this information, the best populations were identified. The evaluation of selection effectiveness was performed on 31 progenies from each population. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant architecture; Plant disease; Grain yield.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000200132

Seeding density in wheat genotypes as a function of tillering potential
Provedor de dados: Scientia Agricola
Autores: Valério,Igor Pirez; Carvalho,Fernando Irajá Félix de; Oliveira,Antônio Costa de; Benin,Giovani; Souza,Velci Queiroz de; Machado,Amauri de Almeida; Bertan,Ivandro; Busato,Cyrano Cardoso; Silveira,Gustavo da; Fonseca,Daniel Andrei Rob.
Seeding density adjustments is one of the practices that most influence grain yield, as well as other agronomic traits. Therefore, the objective of this study was to determine the ideal plant stand to achieve the maximum grain yield in genotypes showing differential tillering ability. Also, to establish the associations between the genotypes used with tillering and other agronomically important traits as weight of a thousand grains. Two experiments were conducted in 2005 and 2006 in Capão do Leão, Rio Grande do Sul state, Brazil. Five low (JURITI, BR 18, CEP 29, BR 18 and CD 108) and five high (CD 114, SAFIRA, FIGUEIRA, BRS 177 and UMBU) tillering potential wheat cultivars were tested for two years on a split-plot design. The results indicate the need for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Grain yield; Number of fertile tillers; Plant stand.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100004

Physiological aspects of grain yield of maize
Provedor de dados: Thai Agricultural Research Repository
Autores: Tanaka, A.
11 ill.
Palavras-chave: Corn; Maize; Grain yield; Yields; Corn physiology; ข้าวโพด; ผลผลิตเมล็ด; สรีรวิทยา.
Ano: 1972
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3886

ความสัมพันธ์ระหว่างอัตราปลูกและผลผลิตของข้าวโพดเลี้ยงสัตว์ในไร่เกษตรกร อำเภอปากช่อง จังหวัดนครราชสีมา
Provedor de dados: Thai Agricultural Research Repository
Autores: Prapon Boonrumpun; Somchai Lim-aroon; Somchai Potisan.
1 ill., 3 tables
Palavras-chave: Corn; Maize; Plant density; Grain yield; Pakchong District; On Farm Research; ข้าวโพด; ข้าวโพดเลี้ยงสัตว์; พันธุ์ลูกผสม; อัตราปลูก; ผลผลิต.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4214

การเปรียบเทียบมาตรฐานพันธุ์ข้าวฟ่างที่เหมาะสำหรับปลูกในภาคตะวันออกเฉียงเหนือ
Provedor de dados: Thai Agricultural Research Repository
1 table
Palavras-chave: Sorghum; Sorghum yield trial; Grain yield; ข้าวฟ่าง; การทดสอบพันธุ์; ผลผลิต.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4391

Green manure and nitrogen fertilizer effect on grain yield of corn and sorghum
Provedor de dados: Thai Agricultural Research Repository
Autores: Ring Meesawat; Yunus Neiro; Prasarn Promsoongwong; Manoch Donsey; Bunlu Dechsorngchun; Charay Chalermnopakun; Karun Jitvichote.
2 ill., 11 tables
Palavras-chave: Corn; Maize; Sorghum; Grain yield; Green manures; N fertilizers; ข้าวโพด; ข้าวฟ่าง; ปุ๋ยพืชสด; ปุ๋ยไนโตรเจน; ผลผลิต; คุณภาพ.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4290

Study on effect of different broadcasting rates on grain yield of sorghum varieties
Provedor de dados: Thai Agricultural Research Repository
Autores: Prakob Jan-aram.
2 tables
Palavras-chave: Sorghum; Broadcasting rate; Varieties; Grain yield; ข้าวฟ่าง; อัตราปลูก; พันธุ์; ผลผลิต.
Ano: 1989
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4341

UT 203B
Provedor de dados: Thai Agricultural Research Repository
Autores: Sarewat Juttupornpong; Julee Tippayaruk; Kanoktip Lertprasertrat; Walipa Suchato; Chakarin Sutraporn; Chaysang Paikaew; Pornsak Duangpudtan.
7 tables
Palavras-chave: Sorghum; Juicy sorghum; Grain yield; UT 203B; ข้าวฟ่าง; ข้าวฟ่างเมล็ด; ข้าวฟ่างหวาน; ผลผลิต.
Ano: 1990
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4285

สหสัมพันธ์ของค่าวิเคราะห์ฟอสฟอรัสในดินกับผลผลิตของข้าวฟ่าง
Provedor de dados: Thai Agricultural Research Repository
2 ill., 1 table
Palavras-chave: Sorghum; Grain yield; Soil phosphorus; Soil fertility; Fertilizer; ข้าวฟ่าง; ปุ๋ยฟอสฟอรัส; ปุ๋ย; ผลผลิต.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4397

Effect of plant densities and planting dates on some agronomic characteristics and grain yield of field corn varieties
Provedor de dados: Thai Agricultural Research Repository
Autores: Prakob Jan-aram.
2 tables
Palavras-chave: Corn; Maize; Plant density; Planting date; Grain yield; Varieties; ข้าวโพด; ข้าวโพดไร่; ลักษณะทางการเกษตร; ผลผลิต; ความหนาแน่น; วันปลูก; พันธุ์.
Ano: 1989
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4334

Genetic analysis of grain yield of maize as manifested in diverse varietal populations and their crosses
Provedor de dados: Thai Agricultural Research Repository
Autores: Shehata, A.H.; Dhawan, N.L.; Salama, S.I.
5 tables
Palavras-chave: Corn; Maize; Genetic analysis; Grain yield; Varieties; ข้าวโพด; การวิเคราะห์ทางพันธุกรรม; ผลผลิต; ประชากร.
Ano: 1972
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3898

Corn and sorghum agronomic research in 1987
Provedor de dados: Thai Agricultural Research Repository
Autores: Supot Faungfupong; Rungnapa Tangadulratana; Traisuda Waitruadrok; Wirote Cholwiriyakul; Nopasool Samuttong.
2 ill., 10 tables
Palavras-chave: Corn; Maize; Sorghum; Agronomic research; Baby corn plant density; Grain yield; Forage yield; Top cutting; Intercropping; Mungbeans; Peanuts; Legumes; Yield trial; ข้าวโพด; ข้าวฟ่าง; การเขตกรรม; ข้าวโพดฝักอ่อน; ผลผลิตเมล็ด; ผลผลิตต้นสด; ระบบการปลูกพืช; การตัดยอด; ถั่วเขียว; ถั่วลิสง; การทดสอบผลผลิต.
Ano: 1987
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4245

การวิจัยการผลิตข้าวโพดเลี้ยงสัตว์หลังนา
Provedor de dados: Thai Agricultural Research Repository
Autores: Somchai Boonpradub; Sanayh Kraokaw; Wanchai Thanomsub.
Palavras-chave: Corn; Maize; Post-rice condition; No tillage; Growth; Grain yield; Production; ข้าวโพด; ข้าวโพดเลี้ยงสัตว์; ข้าวโพดหลังนา; การปลูก.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4536

การปรับปรุงพันธุ์ข้าวฟ่าง มหาวิทยาลัยขอนแก่น
Provedor de dados: Thai Agricultural Research Repository
Autores: Prasit Jaisil.
3 tables
Palavras-chave: Sorghum; Breeding; Grain yield; ข้าวฟ่าง; การปรับปรุงพันธุ์; ผลผลิตเมล็ด.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4387

Effects of plant densities and planting dates on some agronomic characteristics and grain yield of field corn varieties
Provedor de dados: Thai Agricultural Research Repository
Autores: Prakob Jan-Aram; Prasop Depyasuvarn; Kemchart Chaiyarat; Amnuay Tongdee; Narongsak Senanarong.
1 table
Palavras-chave: Corn; Maize; Plant density; Planting date; Grain yield; Yield trial; ข้าวโพด; ระยะปลูก; วันปลูก; ผลผลิตเมล็ด; การทดสอบผลผลิต.
Ano: 1987
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4246

Study on effect of herbicides and methods of application on grain yields and some agronomic characters of corn
Provedor de dados: Thai Agricultural Research Repository
1 ill., 2 tables
Palavras-chave: Corn; Maize; Herbicides; Grain yield; Agronomic characters; ข้าวโพด; สารกำจัดวัชพืช; ผลผลิต; ลักษณะทางการเกษตร.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3760

Study on planting time of sorghum for forage and grain yield for ratoon
Provedor de dados: Thai Agricultural Research Repository
Autores: Preecha Suriyapan; Wanlipa Suchato; Artasit Boontum; Prasong Sitthithai.
2 ill., 3 tables
Palavras-chave: Sorghum; Varieties; Planting time; Forage yield; Grain yield; Ratoon crop; ข้าวฟ่าง; พันธุ์; ฤดูปลูก; ข้าวฟ่างอาหารสัตว์; การไว้ตอ 2; ผลผลิตเมล็ด; ผลผลิตต้นสด.
Ano: 1989
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4345

โครงการปรับปรุงพันธุ์ข้าวฟ่าง มหาวิทยาลัยเกษตรศาสตร์
Provedor de dados: Thai Agricultural Research Repository
Autores: Thamrongsilpa Pothisoong; Prapon Boonrumpun.
1 ill., 9 tables
Palavras-chave: Sorghum; Breeding; Grain yield; Hybrid sorghum; ข้าวฟ่าง; การปรับปรุงพันธุ์; ลูกผสม; ผลผลิต.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4386

การทดลองเปรียบเทียบผลผลิตที่ลดลงของข้าวโพดเลี้ยงสัตว์เมื่อขาดน้ำในช่วงระยะการเจริญเติบโตต่าง ๆ กัน
Provedor de dados: Thai Agricultural Research Repository
4 tables
Palavras-chave: Corn; Maize; Water deficit; Corn growth stage; Grain yield; ข้าวโพด; การทดสอบผลผลิต; การขาดน้ำ; การเจริญเติบโต.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4395

Effect of different plant populations and combinations of N P K on the grain yield of improved maize under late sown condition in the Kathmandu valley, Nepal
Provedor de dados: Thai Agricultural Research Repository
Autores: Deo, G.P.
1 ill., 4 tables
Palavras-chave: Corn; Maize; Plant population; NPK fertilizers; Grain yield; Yields; Late sown condition; Nepal; Kathmandu valley; ข้าวโพด; ประชากร; ปุ๋ยไนโตรเจน; ปุ๋ยฟอสฟอรัส; ปุ๋ยโปแตสเซียม; ผลผลิต; เนปาล; การปลูกปลายฤดู.
Ano: 1972
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3888

Crop production and soil management practices for improving yield of corn and sorghum
Provedor de dados: Thai Agricultural Research Repository
Autores: Supot Faungfupong; Wasana Wongyai; Surapol Chowchong.
12 tables
Palavras-chave: Corn; Maize; Sorghum; Crop production; Soil management; Fertilizers; Cultural practices; Topdressing; Leaf removal; Plant density; Intercropping; Grain yield; Yields; ข้าวโพด; ข้าวฟ่าง; การผลิตพืช; การจัดการดิน; การใส่ปุ๋ย; การเพาะปลูก.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3826

การเปรียบเทียบพันธุ์ข้าวฟ่างในท้องถิ่น
Provedor de dados: Thai Agricultural Research Repository
1 table
Palavras-chave: Sorghum; Regional yield trial; Grain yield; ข้าวฟ่าง; การทดสอบพันธุ์; ผลผลิต.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4390

Desempenho agronômico de novos híbridos de milho-pipoca no Noroeste do Estado do Paraná - DOI: 10.4025/actasciagron.v31i1.4142
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Vieira, Rafael Augusto; UEM; Rodovalho, Marcos de Araújo; UEM; Scapim, Carlos Alberto; UEM; Tessmann, Dauri José; UEM; Amaral Júnior, Antônio Teixeira do; UENF; Bignotto, Lucas Souto; UEM.
In maize, variations on agronomic performance in distinct environments are common and more evident for one-way hybrids. The objective of this work was to evaluate the performance of new one-way popcorn hybrids developed by the Breeding Program of the State University of Maringá, in northwestern Paraná. The characteristics evaluated were: grain yield, popping expansion, plant height, ear height and the intensity of Southern rust (Puccinia polysora), Northern leaf blight (Exserohilum turcicum), and phaeosphaeria leaf spot (Phaeosphaeria maydis/Pantoea ananas). The assay was carried out into randomized block design with three replications in Maringá, state of Paraná, Brazil, during the 2006/2007 cropping season. The treatments were 27 simple popcorn hybrids...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Zea mays L.; Rendimento de grãos; Capacidade de expansão; Doenças foliares Zea mays L.; Grain yield; Popping expansion; Leaf diseases.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4142

Interação genótipo x ambiente na produtividade de grãos de linhagens e cultivares de feijão - DOI: 10.4025/actasciagron.v31i4.850
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Faria, Anderson Paranzini; UEL; Moda-Cirino, Vania; IAPAR; Buratto, Juliana Sawada; UEL; Silva, Camila Farah Borges da; IAPAR; Destro, Deonisio; UEL.
O objetivo deste trabalho foi avaliar os efeitos da interação genótipo por ambiente na produtividade de grãos em linhagens e cultivares de feijoeiro, com a finalidade de orientar programas de melhoramento visando ao desenvolvimento de cultivares superiores. No ano agrícola 2005/2006, foi estabelecido um ensaio, na safra das águas e da seca, em três Estações Experimentais do Iapar, num total de seis ambientes. O delineamento utilizado foi o de blocos ao acaso, com 20 tratamentos e três repetições. As parcelas foram constituídas por duas linhas de 5 m, com espaçamento de 0,5 m entre linhas e com densidade de 15 plantas por metro. Foram efetuadas avaliações para o número médio de dias para florescimento e maturação fisiológica e produtividade de grãos por...
Palavras-chave: 5.02.01.03-4    Genética e Melhoramento Florestal Phaseolus vulgaris L.; Produtividade de grãos; Cultivares Melhoramento Vegetal e Fitotecnia Phaseolus vulgaris L.; Grain yield; Cultivars.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/850

Optimizing row spacing and plant population arrangement for a new short-height castor genotype in fall-winter
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Souza-Schlick, Genivaldo David de; Soratto, Rogério Peres; Zanotto, Maurício Dutra.
Plant population and arrangement should be properly designed to maximize the seed yield of short-height genotypes of castor (Ricinus communis L.) in each cropping season. Experiments were performed in the in the fall-winter cropping season of 2008 and 2009 in Botucatu, State of São Paulo, Brazil, to evaluate the effects of row spacing (0.45, 0.60, 0.75, and 0.90 m) and plant population (25,000, 40,000, 55,000, and 70,000 plants ha-1) on agronomical traits, yield components, seed yield, and oil yield of the genotype FCA-PB. A high plant density caused a reduction in plant survival and increased the first raceme insertion height, particularly in the year with the higher rainfall. The basal stem diameter, number of racemes per plant, and seeds per raceme were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communis  spatial plant distribution  plant density  grain yield  oil content Manejo e tratos culturais Ciências Agrárias; Agronomia Ricinus communis; Spatial plant distribution; Plant density; Grain yield; Oil content Fitotecnia.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17455

Adaptability and stability of semilate and late maturing soybean genotypes in Minas Gerais state - doi: 10.4025/actasciagron.v32i3.8249
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Vasconcelos, Edmar Soares de; UEM; Reis, Múcio Silva; UFV; Cruz, Cosme Damião; UFV; Sediyama, Tuneo; UFV; Scapim, Carlos Alberto; UEM.
The purpose of this study was to evaluate the phenotypic adaptability and stability for grain yield of soybean genotypes by the method of Annicchiarico and the Integrated Method of adaptability and stability analysis and to identify the genotypes with best performance under environmental variations. The agronomic performance of semilate and late genotypes maturing, was evaluated in the final evaluation trials of the Program of Soybean Genetic Improvement of the UFV, in Viçosa, Florestal and São Gotardo, State of Minas Gerais, in the 2006/2007 and 2007/2008 growing seasons. All field experiments were arranged in a complete randomized block design with 14 treatments and three replications. Line CS 02736 and cultivar UFV TN 105 were classified as adapted to...
Tipo: Pesquisa Empírica de Campo
Palavras-chave: 5.01.03.05-9 Glycine max; Grain yield; Genotypes x environments interaction Melhoramento Vegetal Glycine max; Grain yield; Genotypes x environments interaction.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/8249

Agronomic performance of wheat cultivars in response to nitrogen fertilization levels - doi: 10.4025/actasciagron.v34i3.14468
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Benin, Giovani; Universidade Tecnológica Federal do Paraná; Bornhofen, Elesandro; Universidade Tecnológica Federal do Paraná; Beche, Eduardo; Universidade Tecnológica Federal do Paraná; Pagliosa, Eduardo Stefani; Universidade Tecnológica Federal do Paraná; Silva, Cristiano Lemes da; Universidade Tecnológica Federal do Paraná; Pinnow, Cilas; Universidade Tecnológica Federal do Paraná.
The release of wheat cultivars with different nutritional demands and yield potential hinders generalized recommendations for nitrogen fertilization. This study was designed to evaluate the effects of different nitrogen fertilization levels (0, 60, 120 and 180 kg ha-1 of N) on the agronomic performance of six wheat cultivars (Triticum aestivum L.) in two harvests. A randomized block factorial design with three replications was used. The response to fertilization levels was evaluated through AMMI (Additive Main effects and Multiplicative Interaction) and GGE (Genotype main effects and Genotype x Environment interaction) biplot graphic methodologies and polynomial regression. There was genetic variability in response to nitrogen fertilization in the...
Palavras-chave: 5.01.03.00-8 Triticum aestivum L.; Grain yield; AMMI; GGE biplot.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/14468

Produtividade, crescimento e partição de matéria seca em duas cultivares de feijão - DOI: 10.4025/actasciagron.v31i4.6397
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Andrade, Carlos Alberto de Bastos; UEM; Scapim, Carlos Alberto; UEM; Braccini, Alessandro de Lucca e; UEM; Martorelli, Danilo Takara; UEM.
Com o objetivo de caracterizar o crescimento e a produtividade de grãos, das cultivares ‘Ouro Negro’ e ‘BRS MG Talismã’, em condições de campo, na Estação Experimental de Coimbra, Estado de Minas Gerais, pertencente à Universidade Federal de Viçosa (UFV), experimentos de campo foram conduzidos em que se avaliaram o crescimento vegetativo e a produtividade de grãos das duas cultivares. Foram efetuadas amostragens aos 12, 22, 36, 51, 65 e 76 dias após emergência (DAE), sendo determinadas a área foliar e a biomassa dos diferentes componentes da parte aérea, além do índice de área foliar e das taxas de crescimento absoluto e assimilatórias líquidas. Aos 80 DAE (colheita), foram determinados a produtividade de grãos e os seus componentes (número de plantas por...
Tipo: Pesquisa no campo
Palavras-chave: 5.01.03.04-0    Produção de Mudas Phaseolus vulgaris; Genótipos; Análise de crescimento; Componentes da produção; Produtividade de grãos. Fitotecnia Phaseolus vulgaris; Genotype; Growth analysis; Production components; Grain yield.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6397

Agronomic performance of popcorn genotypes in Northern and Northwestern Rio de Janeiro State - doi: 10.4025/actasciagron.v35i1.15694
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Silva, Thiago Rodrigues da Conceição; Universidade Estadual do Norte Fluminense “Darcy Ribeiro”; Amaral Júnior, Antonio Teixeira do; Universidade Estadual do Norte Fluminense “Darcy Ribeiro”; Gonçalves, Leandro Simões Azeredo; Universidade Estadual do Norte Fluminense “Darcy Ribeiro”; Candido, Liliam Silvia; Universidade Estadual do Norte Fluminense “Darcy Ribeiro”; Vittorazzi, Cassio; Universidade Estadual do Norte Fluminense “Darcy Ribeiro”; Scapim, Carlos Alberto; Universidade Estadual de Maringá.
Three populations of popcorn from the Universidade Estadual do Norte Fluminense Darcy Ribeiro recurrent selection program (cycles C3, C4 and C5 from UNB2U), five simple hybrids provided by the Universidade Estadual de Maringá breeding program, five varieties (BRS Angela, UFVM-2 Barão de Viçosa, Viçosa, Beija-Flor and SAM) and three commercial hybrids (Zelia, Jade and IAC 112) were evaluated in five environments for their potential to be registered by the MAPA and recommended to producers in Northern and Northwestern Rio de Janeiro State. The experiment was arranged in a randomized block design, with three replications. The two main economic traits of the crops, grain yield (GY) and popping expansion (PE), were assessed. In the joint analysis of variance,...
Palavras-chave: Zea mays L.; Adaptability; Value for cultivation and use; Grain yield; Popping expansion Zea mays L.; Adaptability; Value for cultivation and use; Grain yield; Popping expansion.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15694

Variance components of corn hybrids evaluated in the USA corn belt
Provedor de dados: Agrociencia
Autores: Coutiño-Estrada,Bulmaro; Vidal-Martínez,Victor A.
Abstract In the final steps of a corn (Zea mays L.) breeding program, the test of the superior crosses is a standard practice involving yield trials in many test environments. The objectives of this research were to compare both the magnitude of the standard error of prediction of three different linear mixed models where location and hybrid effects were considered random or fixed effects and the magnitude of the phenotypic variance. Mixed, GLM, and Varcomp procedures from SAS were applied to grain yield and moisture data obtained from 40 hybrids evaluated at 22 locations within the U.S. Corn Belt. Results showed that when using a linear model which considers both location and hybrid effects as random effects, rather than fixed effects, standard errors of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Corn hybrid; Grain moisture; Grain yield; Variance components.
Ano: 2006
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952006000100089

Response of Tunisian durum (Triticum turgidum ssp. durum) and bread (Triticum aestivum L.) wheats to water stress
Provedor de dados: Agrociencia
Autores: Ayed,Sourour; Rezgui,Mohsen; Othmani,Afef; Rezgui,Mounir; Trad,Hiba; Silva,Jaime A. Teixeira-da; Ben Younes,Mongi; Ben Salah,Hamadi; Kharrat,Mohamed.
Abstract Wheat is a staple crop in Tunisia, but little is known about the response of Tunisian durum wheat (Triticum turgidumssp.durum) and bread wheat (Triticum aestivum L.) to water stress. In semi-arid regions, where cereals are concentrated, grain yield is subject to water deficit especially due to variability in rainfall. Therefore, the objective of this study was to evaluate the response to water stress of three durum wheat (Mâali, Nasr and Salim) and two bread wheat (Tahent and Utique) varieties. The experimental design was a complete randomized block, water treatments were rainfed conditions (T0) and irrigation applied at the tillering and flowering stages (T1, control) with three replications per treatment, and data was analyzed by ANOVA and Tukey...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water stress; Durum wheat; Bread wheat; Grain yield; Yield components.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100013

Analysis of grain density and yield characters in aromatic rice genotypes
Provedor de dados: Agrociencia
Autores: Shahidullah,S. M.; Hanafi,M. M.; Ashrafuzzaman,M.; Uddin,M. K.; Razi-Ismail,M.
Aromatic rices (Oryza sativa L.) normally produce enormous spikelets of low grain weight resulting low yield. Grain weight and grain density are the vital indicators of grain filling and mainly dependent on genetic make-up. Detail study of grain density and yield components of aromatic rice is a crucial need for yield improvement. An experiment was conducted with 40 rice genotypes to assess the grain density of aromatic rices and to observe the relationships of different grain categories with yield characters. The percentage of high density grains, good grains, average grains, poor grains, partially filled grains, spikelet sterility, and thousand grain weight were found to vary in a great extent. Maximum 50 % high density grain was harvested in BR39 and a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Aromatic rice; High density grain; Grain yield.
Ano: 2010
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952010000300007

Relationships of rice yield and quality based on genotype by trait (GT) biplot
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SHARIFI,PEYMAN; EBADI,ALI AKBAR.
ABSTRACT An experiment was conducted to examine the influencing characters on rice by using 64 rice genotypes, including four local landraces, four released cultivars and 56 mutant lines (M5) derived from these genotypes, with application of the genotype by trait (GT) biplot methodology. The first two principal components (PC1 and PC2) accounted for 46.6% of total variation in 64 genotypes. The polygon view of GT biplot suggested seven sections for 64 genotypes. The vertex G38 had good amounts of grain yield, panicle length, hundred grain weight, internodes length, plant height and fertility percentage. Generally based on vector view it was demonstrated that the selection of high grain yield would be performed via thousand grain weight, panicle weight and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; Polygon view; Trait associations; Rice; Vector view.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100343

Evaluation of common bean genotypes for drought tolerance
Provedor de dados: Bragantia
Autores: Ribeiro,Tamires; Silva,Daiana Alves da; Esteves,José Antônio de Fátima; Azevedo,Cleber Vinicius Giaretta; Gonçalves,João Guilherme Ribeiro; Carbonell,Sérgio Augusto Morais; Chiorato,Alisson Fernando.
ABSTRACT The aim of this study was to evaluate twelve genotypes of common bean for intermittent drought stress and for root growth angle. The water deficit experiments were conducted in 2015 and 2016in a randomized block experimental design with split plots and three replications. Two treatments were applied: an irrigated treatment and a water deficit treatment, in which irrigation was suspended in pre-flowering and remained suspended up to the time at which the matrix potential of the soil was measured to be near –199 kPa. Atthe maximum point of water deficit, physiological and morphological traits were evaluated, and at physiological maturity, the yield compounds and grain yield. To evaluate root growth angle in 2016, a growth pouch system was used in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Water deficit; Grain yield; Root growth angle.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100001

Characterization of brazilian wheat cultivars in terms of nitrogen use efficiency
Provedor de dados: Bragantia
Autores: Silva,Cristiano Lemes da; Benin,Giovani; Bornhofen,Elesandro; Todeschini,Matheus Henrique; Dallo,Samuel Cristian; Sassi,Luiz Henrique Scarparo.
Nitrogen (N) management in wheat crop is one of the most studied agricultural practices in Brazil; however, there are few reports on its use efficiency. The objective of this study was to characterize 18 Brazilian wheat cultivars, which are representative and have been recently released to cultivation, for nitrogen use efficiency (NUE). The experiments were carried out in Pato Branco, Paraná, and Coxilha, Rio Grande do Sul, during the 2011 crop season. It was used a randomized block design with three replications, in factorial scheme (2 environments × 18 cultivars). Genetic variability was observed for nitrogen utilization efficiency by grains (NUtEg=47.6 to 81.1 kg kg-1) and nitrogen harvest index (NHI=71.3 to 84.6%) with significant effects relating to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L; Grain yield; Nitrogen harvest index; SDS sedimentation; Grain protein concentration.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200001

Statistical methods to study adaptability and stability of wheat genotypes
Provedor de dados: Bragantia
Autores: Bornhofen,Elesandro; Benin,Giovani; Storck,Lindolfo; Woyann,Leomar Guilherme; Duarte,Thiago; Stoco,Matheus Giovane; Marchioro,Sergio Volmir.
ABSTRACT The sensitivity of wheat crop to environmental variations frequently results in significant genotype (G) x environment (E) interaction (GEI). We compared statistical methods to analyze adaptability and stability of wheat genotypes in value for cultivation and use (VCU) trials. We used yield performance data of 22 wheat genotypes evaluated in three locations (Guarapuava, Cascavel, and Abelardo Luz) in 2012 and 2013. Each trial consisted of a complete randomized block design with three replications. The GEI was evaluated using methodologies based on mixed models, analysis of variance, linear regression, multivariate, and nonparametric analysis. The Spearman’s rank correlation coefficient was used to verify similarities in the genotype selection...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Univariate and multivariate methods; Rank correlation; Grain yield; Multi-environment trials.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100001

Plant growth-promoting bacteria associated with nitrogen fertilization at topdressing in popcorn agronomic performance
Provedor de dados: Bragantia
Autores: Spolaor,Leandro Teodoski; Gonçalves,Leandro Simões Azeredo; Santos,Odair José Andrade Pais dos; Oliveira,André Luiz Martinez de; Scapim,Carlos Alberto; Bertagna,Filipe Augusto Bengosi; Kuki,Mauricio Carlos.
ABSTRACT The use of plant growth-promoting bacteria is a promising alternative with low environmental impact to increase the efficiency of use of chemical fertilizers, ensuring high yield with better cost-effective ratio. In maize crops, several studies have demonstrated an increased yield when Azospirillum-based inoculants are used. In the case of popcorn, there are no available studies related to use of inoculation and its response on yield parameters. Thus, the aim of this study was to evaluate the field performance of popcorn when inoculated with the commercial product Masterfix L (A. brasilense Ab-V5 and A. brasilense Ab-V6) and the non-commercial inoculant UEL (A. brasilense Ab-V5 + Rhizobium sp. 53GRM1) associated with nitrogen fertilization. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azospirillum brasilense; Rhizobium sp.; Inoculants; Grain yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100033

Selection for grain yield and quality in segregating generations of wheat
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Andrade,Alessandro Ramos de; Riede,Carlos Roberto; Scholz,Maria Brígida dos Santos; Destro,Deonisio; Fonseca,Ines Cristina de Batista.
The objective of the work was to combine simultaneous selection for grain yield and technological quality in elite segregating populations of wheat developed by the breeding program of IAPAR. Thirteen populations were chosen according to their potentiality of genetic variability in the F2 generation of the 1997 crop season. One hundred heads were selected from each population and sown as F3 head-rows in the following season. Visual selection of individual head-rows or lines was done for yield potential and maturity. Seeds of the selected lines were evaluated for Sedimentation Values as well as Protein Content. The populations were identified as C1 to C13, representing the different crosses. The number of F2:3 lines selected within populations varied from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Technological quality; Grain yield; Segregating generations.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000200010

Path analysis under multicollinearity in soybean
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Bizeti,Henrique Stoco; Carvalho,Claudio Guilherme Portela de; Souza,José Roberto Pinto de; Destro,Deonisio.
This study aimed to establish the phenotypic correlations among several soybean traits with grain yield in direct and indirect effects using path analysis, and to compare alternative methods for minimizing the adverse effects of multicollinearity in estimating path coefficients. The experiment was conducted in greenhouse in a randomized complete block design with four replications. Nine soybean genotypes belonging to three seed size categories were used. The correlation studies and the path analysis showed that the seed size was not important for increased yield. The number of nodes and plant height at maturity showed significant correlation with grain yield. Using the least square methodology, the results obtained by path analysis under multicollinearity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic breeding; Glycine max; Grain yield; Seed size; Root and canopy traits.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500001

Effects of the foliar application of methanol on the yield and growth of rice (Oryza sativa cv. Shiroudi)
Provedor de dados: Ciencia e Investigación Agraria, Revista Latinoamericana en Ciencias de la Agricultura
Autores: Abbasian,Abouzar; Mirshekari,Bahram; Safarzade Vishekaei,Mohammad N; Rashidi,Varahram; Aminpanah,Hashem.
Effects of the foliar application of methanol on the yield and growth of rice (Oryza sativa cv. Shiroudi). Cien. Inv. Agr. 43(1):17-24. Approximately two decades have passed since it was reported that the foliar application of methanol increased plant biomass and yield. Many subsequent reports have been published concerning the ability or inability to reproduce these initial observations. To evaluate the effect of methanol on rice (Oryza sativa cv. Shiroudi) yield and rice components, a field experiment was conducted at the Tonekabon Rice Research Station in Iran in 2012 and 2013. The experiment had a randomized complete block design (RCBD) with three replicates. The plants were treated with aqueous methanol solutions (0, 6, 12, 18, and 24% (v/v))....
Tipo: Journal article
Palavras-chave: Aqueous methanol solution; Correlation; Glycine; Grain yield; Growth; Rice; Tween 80 as a surfactant.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100002

Growth and yield of rice cultivars sowed on different dates under tropical conditions
Provedor de dados: Ciencia e Investigación Agraria, Revista Latinoamericana en Ciencias de la Agricultura
Autores: Garcés-Varon,Gabriel; Restrepo-Díaz,Hermann.
Rice plants are susceptible to low light or high temperature conditions during the reproductive and maturity stages. Two rice cultivars, Fedearroz 50 ('F50') and Fedearroz 733 ('F733'), were planted on three planting dates, January 1st (PD1), February 15th (PD2) and April 1st (PD3), to expose them to different climatic conditions during the different stages of rice development. The experiment was a factorial arrangement. Of the various weather parameters, solar radiation fluctuated the most among the three different planting dates, with PD1 having the highest number of days with values &amp;#8805; 450 cal·cm-2·d-1. The yield components were influenced by the planting time. PD3 showed the lowest number of tillers per unit of area and the highest percentage...
Tipo: Journal article
Palavras-chave: Grain yield; Leaf area index; Planting date; Rice; Solar radiation; Tillers; Unfilled Spikelet percentage.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200008

Common bean elite lines cultivated under nitrogen fertilization and inoculation with Rhizobium tropici
Provedor de dados: Ciência Rural
Autores: Pereira,Helton Santos; Melo,Leonardo Cunha; Faria,Luís Cláudio de; Ferreira,Enderson Petrônio de Brito; Mercante,Fábio Martins; Wendland,Adriane; Souza,Thiago Lívio Pessoa Oliveira de.
ABSTRACT: More efficient strains of Rhizobium have been selected for use in common bean. However, little effort was made with lines selection. The main goals of this research were to verify the presence of interaction involving common bean elite lines utilizing Nitrogen fertilization and Rhizobium inoculation for grain yield and to identify lines with superior yields utilizing biological nitrogen fixation. Eight field trials were conducted at four location-years in Brazilian savanna, using randomized complete blocks design with three replications. Each trial was composed of 17 carioca elite lines. Every two tests in each location were planted side by side, one with mineral nitrogen fertilization (90kg) and the other one with inoculation with Rhizobium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Biological nitrogen fixation; Grain yield; Genotype by environment interaction.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001202168

Rates of nitrogen and growth retardant trinexapac-ethyl on wheat
Provedor de dados: Ciência Rural
Autores: Espindula,Marcelo Curitiba; Rocha,Valterley Soares; Souza,Leandro Torres de; Souza,Moacil Alves de; Campanharo,Marcela; Grossi,José Antônio Saraiva.
The objective in this study was to evaluate the effects of nitrogen rates in association with rates of the growth retardant trinexapac-ethyl on wheat. The experiment was conducted in Viçosa, MG and arranged in a 5×4 factorial, randomized block design, with four repetitions. A combination of five nitrogen rates (30, 60, 90, 120 and 150kg ha-1) with four rates of trinexapac-ethyl (0, 62.5, 125 and 187.5g ha-1) were tested. Trinexapac-ethyl promotes reduction of soot dry mass and grain yield at the lowest N rates, but at the highest N rates there is increase in these characteristics. The combination between N and trinexapac-ethyl rates that promotes higher shoot dry mass is 150kg ha-1 and 187g ha-1 but that promotes higher grain yield is 100kg ha-1 and 120g...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Plant height; Lodging; Grain yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200002

Application times, sources and doses of nitrogen on wheat cultivars under no till in the Cerrado region
Provedor de dados: Ciência Rural
Autores: Teixeira Filho,Marcelo Carvalho Minhoto; Buzetti,Salatiér; Andreotti,Marcelo; Arf,Orivaldo; Sá,Marco Eustáquio de.
Proper management of nitrogen fertilization and using cultivars with high productive potential are essential to obtain high wheat yield. Thus, the objective of the present study was to assess the effects of different N doses and sources, one with a nitrification inhibitor, applied at sowing or as side dressing, on the production components and yield of two wheat cultivars irrigated, under no till, cultivated in a region of low altitude Cerrado (Selvíria - MS). A randomized block design was used in a 5x3x2x2 factorial arrangement, that is, five nitrogen doses (0, 50, 100, 150 and 200kg ha-1), three nitrogen sources (ammonium sulfonitrate with nitrification inhibitor (Entec®), ammonium sulfate and urea) and two nitrogen application times (at sowing or side...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Anticipating nitrogen fertilization; Spray irrigation; Winter cereals; Grain yield.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000800013

Response of dual-purpose wheat to nitrogen fertilization and seed inoculation with Azospirillum brasilense
Provedor de dados: Ciência e Agrotecnologia
Autores: Quatrin,Mauricio Pase; Olivo,Clair Jorge; Simonetti,Gabriela Descovi; Bratz,Vinicius Felipe; Godoy,Guilherme Librelotto de; Casagrande,Lucas Giovane.
ABSTRACT The use of inoculants containing plant growth-promoting bacteria is an alternative to increase the efficiency of nitrogen fertilizers. Studies evaluating the effects of inoculation on forage yield, straw yield, and grain yield in dual-purpose wheat cultivars are scarce. This study aimed to evaluate the forage yield and grain yield in dual-purpose wheat inoculated with Azospirillum brasilense and fertilized with increasing nitrogen rates during two agricultural years (2016-2017) under cutting management. The trial was carried out in a completely randomized block design with four replicates, using a 2 x 4 factorial arrangement. The factors were the inoculation (control or A. brasilense) and nitrogen rates (0, 50, 100 and 150 kg ha-1 of N). Forage,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: “BRS Tarumã” wheat; Forage yield; Grain yield; Strains Ab-V5 and Ab-V6; Triticum aestivum.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100208

Competitive ability of black common bean genotypes with weeds
Provedor de dados: Ciência e Agrotecnologia
Autores: Vogt,Gilcimar Adriano; Balbinot Junior,Alvadi Antonio; Trezzi,Michelangelo Muzell; Backes,Rogério Luiz; Nicknich,Waldir.
The morpho-physiologic characteristics of common bean plants can affect their competitive ability with weeds. The objective of this work was to evaluate the competitive ability of black bean genotypes with weeds. An experiment was carried out in the 2010/11 cropping season in Papanduva, SC, southern Brazil, in order to verify the variability of some plant characteristics among genotypes of common bean. The randomized block design was used, with four replications. Seven cultivars underwent the treatments: BRS Campeiro, CHP 01-238, CHP 01-239, Diamante Negro, BRS Supremo, BRS Valente, IPR Uirapuru, FTS Soberano, IPR Graúna, IPR Tiziu e IAC Diplomata. At 6, 14, 18, 25 and 32 days after emergence (DAE) were evaluated plant height, ground cover by common bean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Weed interference; Grain yield.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000500002

Nutrition, yield and nutrient export in common bean under zinc fertilization in no-till system
Provedor de dados: Ciência e Agrotecnologia
Autores: Kachinski,Wagner Deckij; Ávila,Fabrício William; Muller,Marcelo Marques Lopes; Reis,André Rodrigues dos; Rampim,Leandro; Vidigal,Julio Cezar Borecki.
ABSTRACT Zinc (Zn) is one of the most deficient plant micronutrients in agricultural crops. The objective of this study was to evaluate plant nutrition, grain yield and nutrient export rate in response to soil and foliar Zn fertilization in common bean (Phaseolus vulgaris L.). Two field experiments in no-till system were carried out using two common bean cultivars, BRS Esteio (black bean) and IPR Campos Gerais (Carioca bean). Treatments were composed of soil Zn application during sowing and foliar Zn spray at flowering stage. Soil Zn application had effect on leaf Zn concentration in IPR Campos Gerais and did not affect grain yield of both cultivars. Foliar Zn spray increased leaf Zn concentration by approximately two times in both cultivars, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Tropical soil; Micronutrient; Grain yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100206

Genetic progress of phenotypic recurrent selection in popcorn
Provedor de dados: Ciência e Agrotecnologia
Autores: Ematné,Hugo Junqueira; Souza,João Cândido de; Biudes,Gustavo Barnabé; Nunes,José Airton Rodrigues; Guedes,Fernando Lisboa.
Popcorn is widely consumed in the south of Minas Gerais; however, up to now no specific breeding program for the region has been carried out. Recurrent selection (RS) is a viable alternative for breeding of this crop; nevertheless, it is necessary to frequently evaluate the progress achieved. Consequently, the purpose of this work was to assess the genetic progress obtained after two cycles of RS for the traits of popping expansion (PE) and grain yield (GY). Cycles one and two of the UFLA - E and UFLA - R populations, the original population (UFLA) and two controls were assessed. The experiment was conducted at the UFLA experimental farm in a randomized block design with eleven replications; ten agronomic traits, including PE and GY, were assessed. Gains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Popcorn; Popping expansion; Grain yield.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000100003

Genetic progress in popcorn recurrent selection by a multivariate mixed-model approach
Provedor de dados: Ciência e Agrotecnologia
Autores: Ematné,Hugo Junqueira; Nunes,José Airton Rodrigues; Souza,João Cândido de; Muñoz,Patrício Ricardo.
ABSTRACT Recurrent selection is a viable alternative for popcorn breeding. However, frequent verification of progress attained is required. The aim of this study was to estimate the genetic progress attained for popping expansion (PE) and grain yield (GY) after four cycles of recurrent selection and to compare this progress with the expected progress estimated at the end of each cycle while considering the genetic relationships between the progenies via univariate and multivariate mixed-model approaches. To estimate the genetic parameters and gains from indirect selection, cycles 1, 2, 3, and 4 of a UFLA population were used. To estimate the genetic gains achieved, the following cycles were used: UFLA (original) and cycles 0, 1, 2, 3, and 4, evaluated in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant breeding; Grain yield; Popping expansion.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000200159