AVALIAÇÃO DE PROPRIEDADES QUÍMICAS DE SOLOS DE CERRADO SOBRE DIFERENTES FONTES DE CALCÁRIO: PROPOSTAS PARA ADUBAÇÃO DE ÁREAS DE PASTAGENS

Abstract

The Brazilian cerrado, rich in fauna and flora, is currently busy in his great extension, often subject to degradation pastures due to inadequate management and soil characteristics of the Savannahs that have high acidity levels (pH), aluminum toxicity and few nutrients, reducing the productivity of pastures. These aspects interfere directly in forage quality and, consequently, in cattle breeding, since the state of Goiás has the third herd in the country. Whereas the addition of limestone to the soil, provides an increase in pH reduces toxic aluminum and provides calcium and magnesium necessary for the plants, the research aims to evaluate the chemical properties of cerrado soil, through the measurement of pH and base saturation after the application of solid and liquid limestone. In a distrophic red latosol, was implemented an entirely randomized experimental design with seven replications with plots of 7m2 to the solid limestone, and limestone and liquid. The chemical evaluations considered four depths (0 - 5 cm, 5 - 10 cm, 10 - 20 cm), at thirty, sixty and ninety days with the respective rainfall conditions. The solid limestone was efficient, especially in the embedded layer, increasing pH and base saturation. Net limestone did not respond to chemical changes, for growing a forage species Panicum maximum. It was concluded that, in this research, the solid limestone made the soil correction, seeking pasture management.