Variabilidade espacial da macroporosidade do solo em área irrigada, antes do preparo e após colheita, sob dois sistemas de preparo.

Abstract

The macroporosity changes in time and space was studied between before soil tillage and after crop yield in a irrigated area by center-pivot, in Universidade Estadual de Maringá - PR. A plot was submited to conventional tillage and other to chiseling. The conventional tillage do not modified the soil compaction trend. Chiseling, by other side, effectively modify this, make best aeration, roots development and infiltration in the root system region, without modifying the spatial dependence of the macroporosity.