NITROGÊNIO EM SOLO SOB SISTEMA DE INTEGRAÇÃO LAVOURA-PECUÁRIA

Abstract

Crop-livestock integration increases the availability and efficiency of nitrogen utilization in the soil, promoting sustainability and productivity in agricultural production. The objective of this study was to evaluate the efficiency of crop-livestock integration systems in relation to nitrogen input in the soil, in order to quantify it and provide relevant data to improve soil fertility, as well as to increase the productivity and profitability of properties adopting this integrated management method. The concentration of nitrogen in the soil was evaluated at different depths in areas with and without forage grazing after soybean harvest. The results showed that management without grazing resulted in higher levels of nitrogen compared to grazing management, highlighting the importance of preserving unconsumed vegetation for the input of plant residues and, consequently, for soil fertility. Soil depth analysis was also relevant, demonstrating that the 0-10 cm and 10-20 cm layers had higher nitrogen levels compared to the 20-40 cm layer, underscoring the importance of considering the distribution of nutrients in the soil profile during management practices.