USE OF GLYPHOSATE AND ENVIRONMENTAL IMPACTS ON RURAL PROPERTIES IN THE VILLAGE OF IGUAÍBA, BRAZIL

Abstract

This article aimed to evaluate the impacts of pesticide use on agricultural soil in the village of Iguaíba, Paço do Lumiar, Maranhão, focusing on the behavior and adsorption of glyphosate. The work identifies the products used by farmers and analyzes the soil's physicochemical characteristics-considering factors such as particle size, organic matter, organic carbon, pH, moisture, and nutrients as well as the soil's herbicide retention capacity. The results showed a predominance of clayey soils with high organic matter content and moderate acidity, while nutrient levels varied according to agricultural management and seasonal conditions. Low glyphosate adsorption coefficients indicated limited retention in the solid phase and greater availability in the soil solution, suggesting a potential for leaching and environmental contamination. The study concludes that the recurring use of glyphosate may facilitate its mobility within the soil, while physicochemical characteristics influence its availability and behavior in the environment.