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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Corn and soybean yields as affected by cover crops and herbicide timing under no-tillage system.
Autores:  OLIVEIRA, P.
Data:  2014-07-09
Ano:  2013
Palavras-chave:  Milho
Planta de cobertura
Brachiaria brizantha
Phaseolus vulgaris
Pennisetum glaucum
Zea mays
Glycine max
Plantio direto
Resumo:  To achieve better results in the no-tillage system (NTS), it is important to properly manage the cover crop prior to planting by using herbicides, usually glyphosate. The effect of glyphosate on plant coverage is slow, and plants take a few days to die completely. Thus, when applying the herbicide on the same day of planting soybean or corn, cover crops are still alive and standing, causing initial shading on seedlings of the crop and delaying its establishment. Therefore, this study aimed to evaluate the effect of distinct cover crops and their timing of desiccation prior to planting soybean or corn, on crop yield and yield components. Two experiments were installed, one for soybean and another for corn. Each experiment consisted in combining three cover crops (Brachiaria brizantha, common bean or millet) chemically desiccated at two timings before planting the crop (15 or 0 days before planting) under no-tillage system (NTS). Experiments were installed in a completely randomized block design with five replications. Brachiaria brizantha produced the highest amount of biomass; common bean and millet as cover crops allowed higher soybean grain yields; herbicide application under common bean, millet and Brachiaria brizantha 15 days before planting soybean allowed higher crop grain yields; desiccation timing of common bean did not affect corn grain yield; Brachiaria brizantha should be desiccated 15 days before planting corn to allow maximum grain yield; when millet was used as a cover crop, glyphosate application at planting of corn allowed the highest grain yield.

Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  32823
Editor:  Planta Daninha, Viçosa, MG, v. 31, n. 4, p. 939-946, 2013.
Relação:  Embrapa Arroz e Feijão - Artigo em periódico indexado (ALICE)

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