Produtividade do feijoeiro comum influenciada por plantas de cobertura e sistemas de manejo do solo
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Data
2011
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Resumo
A field experiment was carried out under no-tillage system (NT) and conventional tillage (CT) to assess the
dry mass production, N accumulation and the decomposition rate of crotalaria (Crotalaria juncea) and
sorghum (Sorghum bicolor L.), as well as, their effects on the grain yield of common bean (Phaseolus
vulgaris L.). Results showed that soil management had no effect on the dry mass production of cover
crop, however, the sorghum produced 60% more dry mass as compared with crotalaria. The largest N
accumulation was observed under NT, which showed 45% more N than CT, however, no statistical
difference between cover crops was observed. The straw rate decomposition under NT was 50% lower
than under CT and, until 28 days, the decomposition of crotalaria under CT was faster than sorghum.
The common bean grain yield was 40% higher under NT as compared with CT and it showed high
correlation with N amount accumulated by the cover crops. Under Cerrado condition of Goiás state, NT
promotes greater N accumulation and lower decomposition rate of the cover crops, leading to greater
grain yield of common bean as compared with CT.
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Crotalária, Palhada, Taxa de decomposição, Sorgo, Crotalaria, Sorghum, Straw, Decomposition rate
Citação
FERREIRA, Enderson P. de B.; STONE, Luís F.; PARTELLI, Fábio L.; Agostinho D. Produtividade do feijoeiro comum influenciada por plantas de cobertura e sistemas de manejo do solo. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 15, n. 7, p. 695-701, 2011.