Diagnóstico do sistema de produção de soja e manejo de plantas espontâneas nos municípios de Marquinho e Laranjeiras do Sul - PR

Abstract

Soybean is Brazil's most cultivated summer crop, and one of the main limitations in obtaining maximum crop yields is the presence of weeds. This study aimed to survey the characteristics of the soybean cultivation system and associated weeds in Marquinho and Laranjeiras do Sul. The research was carried out through a questionnaire applied to 30 producers, and the tabulated responses were submitted to descriptive statistical analysis. The horseweed was present in 100% of the properties, so we sought to understand which weed control methods producers used in the region. In the sequence, the plants highlighted by the producers were bitter grass and viola cord. Few producers adopt specific strategies for managing plants that are difficult to control or resistant to herbicides, such as sequential application or using pre-emergent herbicides so as not to depend exclusively on post-emergent ones. Most producers depend on hiring machinery to harvest soybeans. Through the results obtained in this work, it will be possible to help with strategies to manage spontaneous plants that are difficult to control through techniques that are rarely used, such as sequential application, in addition to organizing training for producers on management methods that can be used.