Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Nitrogen recovery efficiency for corn intercropped with palisade grass Bragantia
Almeida,Rodrigo Estevam Munhoz de; Favarin,José Laércio; Otto,Rafael; Franco,Henrique; Reis,André Froes Borja; Moreira,Lílian Angélica; Trivelin,Paulo.
ABSTRACT Intercropping corn and palisade grass is a technique to increase straw production, soil C contents, nutrient cycling and crop yield. However, concerns arise from nitrogen (N) uptake by the intercropping crop causing reduction in the yield of the corn. Our objective was to evaluate N recovery efficiency (NRE), and the N dynamics in the soil-plant system in corn intercropped with palisade grass. A field trial was carried out in Bahia, Brazil, evaluating two cropping systems: corn (monoculture) and corn intercropped with palisade grass sowed between rows on the same day as the corn crop, with four replicates in a completely randomized block design. Nitrogen (150 kg∙ha–1of 15N-urea) was applied at sowing to determine NRE, which means the amounts of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Urochloa ruziziensis; Urea; 15N isotope technique; No-till system; Brazilian Cerrado.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000400557
Imagem não selecionada

Imprime registro no formato completo
Corn yield, forage production and quality affected by methods of intercropping corn and Panicum maximum PAB
Almeida,Rodrigo Estevam Munhoz de; Gomes,Caio Macret; Lago,Bruno Cocco; Oliveira,Silas Maciel de; Pierozan Junior,Clovis; Favarin,José Laércio.
Abstract: The objective of this work was to evaluate methods of intercropping corn and Panicum spp. forages and their effects on corn yield and forage development. Two experiments with Panicum spp. were conducted, one with 'Tanzania' and other with 'Massai' in the municipality of Piracicaba, in the state of São Paulo, Brazil, in the 2012/2013 growing season. In both experiments, the treatments were: broadcast seeding of Panicum spp. at the same time of corn sowing; corn with Panicum spp. between rows; Panicum spp. sown with fertilizer; Panicum spp. sown between corn rows after corn establishment; broadcast seeding of Panicum spp. after corn establishment; and sole corn sowing. For corn, leaf nitrogen content, ear height, and grain yield were evaluated. For...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Guinea grass; Interspecific competition; Tropical perennial grass.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000300170
Imagem não selecionada

Imprime registro no formato completo
Yield losses in off-season corn crop due to stalk rot disease PAB
Costa,Rodrigo Véras da; Simon,Jones; Cota,Luciano Viana; Silva,Dagma Dionísia da; Almeida,Rodrigo Estevam Munhoz de; Lanza,Fabrício Eustáquio; Lago,Bruno Cocco; Pereira,Alan Alves; Campos,Leonardo José Motta; Figueiredo,José Edson Fontes.
Abstract: The objective of this work was to assess yield losses due to stalk rot in corn (Zea mays) hybrids, as well as to identify the main pathogenic fungi responsible for the disease during the off-season, in the state of Tocantins, Brazil. Two field experiments were carried out, one with five hybrids, in 2015, and another with four, in 2016. Ears of healthy and stalk rot-infected plants were collected from each plot, at harvest. Ear size, grain and ear weights, and grain moisture content were measured. From each diseased plant, a stalk piece with two to three nodes was removed for pathogen identification and quantification. The most common pathogens were: Fusarium graminearum, Stenocarpella maydis, and Macrophomina phaseolina. All yield parameters were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fusarium graminearum; Zea mays; Lodging; Stalk breakage; Stem disease.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102300
Imagem não selecionada

Imprime registro no formato completo
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil Scientia Agricola
Faria,Italo Kaye Pinho de; Vieira,José Luís Vilela; Tenelli,Sarah; Almeida,Rodrigo Estevam Munhoz de; Campos,Leonardo José Motta; Costa,Rodrigo Veras da; Zavaschi,Eduardo; Almeida,Risely Ferraz de; Carneiro,Leandro de Mello e Silva; Otto,Rafael.
ABSTRACT: Integrating plant density and nitrogen (N) management is a strategy for improving corn yields, especially for off-season corn production in the tropics. This study tested the hypothesis that increasing plant densities and N rates promotes yield gains for off-season corn production in high-yielding environments. The aim of the study was to investigate the yield performances of two hybrid versions (DKB PRO and DKB PRO3) submitted to three plant densities (55,000; 65,000 and 75,000 plants ha−1) and four N rates (control, 60, 120 and 180 kg ha−1 N). Field trials were undertaken at Uberlândia-MG (site1 and 2) and Pedro Afonso-TO (site 3), Brazil from which data on corn yield parameters were collected and analyzed. Multivariate analysis separated the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Hybrid; Population; Corn yield; Second-crop.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400344
Imagem não selecionada

Imprime registro no formato completo
Grain yield, efficiency and the allocation of foliar N applied to soybean canopies Scientia Agricola
Oliveira,Silas Maciel de; Pierozan Junior,Clovis; Lago,Bruno Cocco; Almeida,Rodrigo Estevam Munhoz de; Trivelin,Paulo Cesar Ocheuze; Favarin,José Laércio.
ABSTRACT: Soybean [Glycine max (L.) Merr.] grain yield is closely associated with the level of optimal nitrogen (N) supply, especially during the reproductive stages. Foliar fertilization with low rates of N have been considered as a strategy for furnishing additional N and enhancing grain yields. Field studies using 15N tracer were conducted over two growing seasons to investigate the impact of foliar N fertilization on grain yield, plant N content, the amount of N derived from fertilizer (NDFF) and N recovery efficiency (NRE). Four foliar N rates (0, 1300, 2600 and 3900 g ha−1) were supplied by two equal split applications at the R1 and R3 stages. Foliar N fertilization of soybean canopies did not affect grain yield, grain N content, shoot N content nor...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max (L.) Merr; Foliar N fertilization; 15N tracer; Foliar application; Nitrogen recovery efficiency.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400305
Registros recuperados: 5
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional