Efeito residual do calcário para o milho sob plantio direto e convencional em solo de Cerrado.

AUTOR(ES)
FONTE

Planaltina

DATA DE PUBLICAÇÃO

2011

RESUMO

ABSTRACT: The Cerrado soils are acid with toxic levels of aluminum, being necessary to use lime to overcome these conditions to grow crops. The residual effect of lime in a Red Latosol were evaluated for corn at the 5th and 6th crop, under conventional tillage (disk plowing and harrowing) and no-tillage planting systems. Lime at different levels was previously applied for the first crop, with and without incorporation into the soil. The results showed a significant increase in corn grain production due to the residual effects of lime levels, either incorporated, surface applied with no incorporation, or a mixing of both methods. After six years of cropping, the surface applied lime with no incorporation changed the soil conditions mainly at the 0 cm - 10 cm soil depth. Below that depth, the soil pH and CEC base saturation were similar to those in the treatment with no lime application.

ASSUNTO(S)

correção do solo calagem solo cerrado soil management soil amendments liming zero tillage

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