ATRIBUTOS QUÍMICOS EM SISTEMA INTEGRAÇÃO LAVOURA PECUÁRIA COM TAXA VARIÁVEL DE SUPLEMENTAÇÃO PROTEICA ANIMAL

Abstract

Brazil has become one of the largest beef producing and exporting countries, with most of its production coming from pastures in the Cerrado region. Integrated systems, such as crop-livestock integration (ILP) and crop-livestock-forest integration (ILPF), gain prominence on the national scene as they reduce financial and productive risk and cause less damage to nature. Thus, this work aimed to evaluate the chemical attributes of the soil in an ILP area three years after its implementation, in which varied rates of animal feed supplementation were tested during the grazing period (mineral salt supply, 0.5% of live weight in proteinated and 1.5% of live weight in proteinated). Soil samples were collected in layers of 0.0-0.10m; 0.10-0.20m and 0.20-0.40m deep to carry out chemical analyses. In the surface layers of the soil, there was an enrichment of phosphorus, calcium, potassium and magnesium, as well as soil organic matter. Regarding food management, a higher potassium and calcium content was observed with the supply of mineral salt and 1.5% of PV, highlighting the need for more frequent monitoring of the chemical changes that occur in the soil in areas with these forms of management.