Efeitos de sistemas de preparo nas propriedades físicas de um latossolo vermelho acriférrico cultivado com milho

Abstract

His work had as objective compares the effects of different system of periodic preparation through the mechanical resistance to the penetration and bulk density in Red Latossol and their effects in the culture of the corn (Zea mays L.). The treatments were: no tillage, scared, disk harrow, moldboard plow, dik plow and savannah, entirely forming a delineation completely randomized in factorial array 6x4 (6 system of periodic preparation and 3 depths) with four repetitions. The results showed that the humidity didn't interfere in the mechanical resistance to the penetration, the moisture content was increase in the savannah that it presents stable atmosphere, and it possesses larger tenor of organic matter. The bulk density of the soil presented statistical differences just to the savannah, not presenting compacting effect nor for the use nor for the handling. The productivity of the culture of the corn, it was not affected by the different preparation systems.