Herbicidas de modo de ação múltiplo: vantagens e riscos na resistência de plantas daninhas

Abstract

Weed resistance to herbicides has become one of the main challenges for modern agriculture, compromising the efficiency of chemical control and crop productivity. In this context, herbicides with multiple modes of action, which act on different metabolic targets of plants, present themselves as a promising strategy to mitigate the problem of resistance. This study aimed to carry out a literature review on multiple mode of action herbicides, focusing on evaluating their advantages and risks in managing weed resistance. Based on a bibliographical review, the work analyzed recent publications that address the effectiveness of these herbicides and the implications of their use. The results show that the use of herbicides with multiple modes of action reduces the selection of resistance, increases control over resistant populations and minimizes the economic impacts associated with agricultural losses. However, prolonged use can lead to the emergence of cross-resistance and negative environmental impacts. Therefore, complementary strategies, such as crop rotation and integrated cultural practices, are essential to maximize benefits and mitigate risks. It is concluded that the adoption of integrated management and the development of new technologies are fundamental for agricultural sustainability