Glyphosate is a systemic post-emergent herbicide of the non-selective organophosphate group widely used in apple orchards in the South of Brazil. It may have adverse effects on beneficial soil microorganisms. The aim of this study was to evaluate the biodegradability of glyphosate by soil microbiota in apple orchards with different histories of application of the product. For that purpose, soil samples from the region of Vacaria, Rio Grande do Sul, were used, with the biodegradation of glyphosate being evaluated by […]

Currently research verified that glyphosate or ammonium glufosinate herbicides use for cover crop desiccation in conservationist systems may reduce N amount in straw. The aim of this study was to evaluate nitrogen mineralization in millet straw after glyphosate or ammonium glufosinate application and the N uptake by corn plants. A complete randomized design was used with six treatments and five replications, in a 3 x 2 factorial scheme: cover crop management (without herbicide application, glyphosate or ammonium glufosinate desiccation) and soil type […]