Resistência do solo à penetração em diferentes sistemas de manejo do solo.

Abstract

An aid to identify soil quality may be attained by soil penetrometer measurements. Two components of soil resistance, shear force and soil-metal friction are embedded, and depend upon soil structure and on the water content. Aiming to visualize the effect of six years of repeated soil tillage systems under crop rotations on penetrometer resistance this work was carried out. Conventional tillage, minimum tillage (chiselling) and no tillage were compared. Soil tillage reduce penetrometer resistance, comparing to no-tillage or natural pasture fields. No tillage points towards an upper compacted layer, even after six years of no-tillage system.