Efeitos da leucena e da adubação NPK sobre a cultura do feijão no cerrado.

• Autor(a) principal: CHAGAS, J. M.
• Data de Publicação: 1983
• Outros Autores: PEREIRA FILHO, I. A., VIEIRA, A. C.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/471653
• topic: Patrocinio; Minas Gerais; Leucena; Fertilizacao; Savanna; Green manure; Fertilization; Adubação Verde; Cerrado; Feijão; Fósforo; Leucaena Leucocephala; Nitrogênio; Npk; Phaseolus Vulgaris; Potássio; potassium; nitrogen; phosphorus

An experiment was carried out in a poor cerrado soil at Patrocinio, state of Minas Gerais, in order to determine the effect of Leucaena leucocphala, as a green manure, and chemical fertilization on the yield of beans (Phaseolus vulgaris). Treatments included leucena plus a 2 x 2 x 2 factorial, as levels of 0 and 40kg/ha of N (as ammonium sulfate), 0 and 70kg/ha of P2O5 (as ordinary super-phosphate), and 0 and 60 kg/ha of K2O (as potassium chloride). Additional treatments were 0-0-0 and 40-70-60- kg/ha of N-P2O5-k2O, both without the green manure. The leucena and the NPK fertilization had the same effect, increasing the bean yield from 83 to 350 kg/ha. With leucena, the superphosphate had the greatest effect, followed by the nitrogenous fertilizer. The complete chemical fertilization associated with the green manuring resulted in the hihest yield of 900 kg/ha.