Influência do preparo do solo na produção de soja (Glycine max (L) Merril).

Abstract

The main objectives o f this paper were to study the effects o f tillage soil in the soybean yields to for two types o f soils . The tillage treatments were: 1. plowing and two tanden disking; 2. two tanden disking; 3. one rotary tillage and 4. no-tillage system. The sta tistic analysis did not show any affect o f the tillage treatment on the grain yields for the two types o f soils studied.