Influencia da escarificação do solo na produtividade da cultura da soja (Glycine max).

This study investigated the influence of soil scarification on soybean productivity. For this, two areas under soybean cultivation were compared: one subjected to scarification and the other without treatment. The central hypothesis was that the superficial decompaction of the soil, promoted by scarification, would increase soybean productivity. Through soil penetration resistance depth and productivity analyses, penetration resistance and productivity maps were generated. Although scarification reduced compaction in the surface layers of the soil, there was no significant difference in productivity between areas. Soil scarification, although it reduced resistance to soil penetration into the surface layers, did not result in an increase in productivity, although the application of this practice must be carefully evaluated. The use of the penetrometer proved to be an effective tool in measuring the resistance to soil penetration, being a tool that can be used in decision making for the use of specific implements for disaggregating densified/compacted layers in the subsurface of the soil.