Resistência à penetração e grau de compactação de um latossolo sob o pisoteio do gado no sistema integração lavoura-pecuária.

Abstract

The objective of this work went verify the alterations in the soil resistance in areas compacted by the trampling of animals in system of integration agriculture cattle. In the experiment the area was divided in three pickets where the animals were placed according to the humidity of the soil. In the first picket the cattle was accomplished with the humid soil, in the second picket the animals were placed when the soil was dry and in the third picket there was not the cattle. The resistance of the soil was obtained being used a penetromether perforating in eighty different points in each picket. The values obtained in the experiments showed the effect of the trampling of the cattle in compacting the soil in the soil layer to the 20 cm initials. The pick pronounced in the resistance to the penetration 5 cm can be indicative that the maximum mobilization of the resistance of the soil happened to the depth 5 cm.