Cultura associada de feijão e milho XIII - retardamento de plantio de uma ou outra das culturas
Arquivos
Data
2001-09
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Revista Ceres
Resumo
O estudo foi conduzido em Coimbra, Minas Gerais, durante dois ”anos agrícolas". Os seguintes tratamentos foram utilizados durante a estação chuvosa (semeadura em outubro ou novembro): monocultivo de milho; plantio simultâneo de milho e feijão; milho semeado S, 10, 15 e 20 dias depois do feijão; e feijão semeado 5, 10, 15 e 20 dias depois do milho. Perto do experimento, foi estabelecido o feijão em monocultivo. No começo de março (estação seca), o feijão foi novamente semeado no meio do mesmo milharal, num único dia. Os resultados mostraram que o retardamento do plantio do milho beneficia o, feijão da estação chuvosa, mas reduz o rendimento daquela cultura em 7 a 27%. Quando o feijão foi plantado depois do milho, esta cultura foi beneficiada pelo adubo aplicado na leguminosa, a qual apresentou rendimentos muito baixos. O feijão da estação seca não foi afetado pelos tratamentos da estação chuvosa. Considerando os rendimentos do milho e dos dois plantios do feijão e, também, o índice de equivalência de ara, o melhor tratamento foi o de retardar em cinco dias a semeação do milho.
This experiment was carried out in Coimbra, Minas Gerais, Brazil, during two agricultural years. The following treatments were used during the rainy season: maize monoculture; maize and beans planted simultaneously; maize planted 5, 10, 15 and 20 days after beans; and beans planted 5, 10,15 and 20 days aiter maize. Near the experiment, bean monoculture was also included. At the dry season, beans were again seeded, at the same day, among the maize plants.: Results showed that the retardation in maize planting benefits the rainy season bean but reduces maize yield from 7 to 27%. When beans were planted after maize, this crop was benetited by the fertilizer applied to the legume, which presented a minimum yield. Dry season beans were not affected by the rainy season treatments. Considering maine and bean yields in rainy and dry seasons, as well as land equivalent ratio, the best treatment was a delay of five days in maize sowing.
This experiment was carried out in Coimbra, Minas Gerais, Brazil, during two agricultural years. The following treatments were used during the rainy season: maize monoculture; maize and beans planted simultaneously; maize planted 5, 10, 15 and 20 days after beans; and beans planted 5, 10,15 and 20 days aiter maize. Near the experiment, bean monoculture was also included. At the dry season, beans were again seeded, at the same day, among the maize plants.: Results showed that the retardation in maize planting benefits the rainy season bean but reduces maize yield from 7 to 27%. When beans were planted after maize, this crop was benetited by the fertilizer applied to the legume, which presented a minimum yield. Dry season beans were not affected by the rainy season treatments. Considering maine and bean yields in rainy and dry seasons, as well as land equivalent ratio, the best treatment was a delay of five days in maize sowing.
Descrição
Palavras-chave
Zea mays, Phaseolus vulgaris, Altura do milho, Rendimento, Índice de equivalência de área