Diâmetro médio ponderado (dmp) e módulo de finura (mf) de um solo trabalhado com arado de discos e grade.

Abstract

Several equipments were used in preparing the soil or part of it. Usualy it is used the same equipament several times or different equipaments only one time in the same location. Often this is done in an inadequate manner, leading the producer to spend more time and money and exposing the soil to erosion losses. The present paper aimed to determine the desaggregation level in preparing the soil with several horizontal angles of the disc, proportionated by variations on the transversal bar of a fixed-disc plow in a non-grated and trated surface before and after plowing a Cambic Yellow-Red Podzol, Phase Terrace with these data, the user will be able to decide about the method wich will provide shirift of sesources and time , as well as soil and water conservation, a good quality of the sowing bed ond other aspects enherent to soil preparing.