In this work, DC electrical resistivity measurements were used for to evaluate agricultural areas where no-tillage and conventional management systems have been established for 20 years. The study area is located at Distrito Federal, in the central region of Brazil. It was observed that conventional system area is less resistive than no-tillage system area. This result can be related to the fact that management systems influenced soil micro and macro aggregates distribution, what is related with permeability. Conventional system causes disruption of soil macro aggregates, increasing soil porosity and water retention and decreasing permeability and resistivity.


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