Crop profile method in the identification of transformations in soil attributes by agricultural useCrop profile method in the identification of transformations in soil attributes by agricultural use

Abstract

The study was carried in 2002, in Rolandia, north of Paraná State, and had as objective to asses the chemistry modifications on a clayey Oxisol, comparing the conventional management system of sugar cane used by growers of Rolandia Cooperative Agriculture, and the systems of no tillage with wheat crop in rotation with others crops, both with eight years of succession, using as reference a native vegetation area localized beside the evaluated systems. Six trenches were digged in each system, for carrying about morphological study by the method of Crop Profile. Based on the identification of the homogeneous morphological units found in the description of the soil profile, samples were taken for chemistry analysis. No tillage system improved the main chemistry and morphological soil characteristics in the 0-0.40 m layer. Sugar cane conventional system exhausts the soil in some profile structures. The Crop Profile Method helped to have an appropriate notion about the main changes found in the studied treatments.