Efeito de plantas de cobertura no manejo do capim-amargoso (Digitaria insularis) em sistema de plantio direto

Abstract

Based on an analysis of the fundamental characteristics of sourgrass (Digitaria insularis), considering its biological and ecological aspects, the present research is about alternative weed management strategies, based on a bibliographical review on the subject, emphasizing cover crops, specifically the use of mulching in a no-tillage system. I also try to understand the resistance of the weed species to the glyphosate herbicide, a factor that has a direct influence on the productivity of agricultural crops, due to the progressive increase of the occurrence of plants of the genus Digitaria sp. Elements such as allelopathy in promoting control of weeds will be considered, adding to the content of the debate the relationship between infestation of sourgrass and considerable decreases in soybean plantations, reinforcing the relevance of the use of different types of straw as a complementary tool to chemical control.