Compactação do solo e produtividade da soja em sistemas de preparo

Abstract

Soil management can influence the soil compaction and, as a consequence, the productivity of the crop. Therefore, the objective to evaluate the effect caused by staging systems: without mobilization, medium harrow, scarification, scarificatiuon + medium harrow, cross scarification + medium harrow, conventional tillage, on compression and agronomic attributes of soybean culture. The work was performed using random blocks design with four replications. We evaluated the percentage of soil cover, the resistance to penetration for each management system in layers of 0.0-0.10 m; 0.10-0.20 m; 0.20-0.30m; 0.30-0.40m, the longitudinal distribution of seedlings and soybean productivity. The data were submitted to variance analysis by Scott-Knott test at 5% probability. The analysis of spatial dependence of the soil resistance to penetration. The staging system provides the maintenance of straw on the ground. The resistance to penetration presented difference between the managements for all depths studied and also showed dependence between strong and moderate space. Productivity did not differ for the different managements assessed.