Efeito de diferentes coberturas vegetais e sistemas de preparo na densidade, teor de água do solo e produtividade da soja.

Abstract

Effect of different vegetal coverings and soil tillage systems in bulk density, water contend and productivity of the soybean. The present research was carried in Cidade Gaúcha, PR, Brazil, Campus Arenito from University State of Maringá. This work evaluated the development of the soybean under the influence of vegetal covering and management of the soil in Dystrofic Red Latosol. One used oats, turnip, hairy vetch, pea, millet and lupine. One evaluated productivity, water contend and bulk density. The system no-tillage had greater water contend and soil bulk density with lower productivity. The values bulk density and water contend increased with depht in soil tillage systems.