Mercado de sementes de soja: impacto da antecipação da colheita na qualidade da matéria prima

Abstract

The anticipation of the soybean harvest is possible using the practice of pre- harvest desiccation, which reduces the time the seeds remain in the field after physiological maturation. The objective of this work was to evaluate the effects of desiccants applied in pre-harvest on the physiological quality of soybean seeds during storage. The work was structured in two stages in a field experiment, conducted in the municipality of Capáo do Leão-RS, harvest 2020/2021, with analysis of seed quality. The treatments consisted of applying the products: Finale (1 and 2 L.ha) and Decorum (0.5 and 1 L.ha), as well as the control (without desiccation). In stage 1: The quality analysis was conducted at the Seed Analysis Laboratory - UFPel, where the following tests were performed: germination, first germination count, germination speed index, total length, root and aerial part, emergence, germination index emergence speed and in stage 2 the protein and oil content was determined. The desiccation of soybean seed production at the R7 phenological stage does not affect the physiological quality of the seeds. The Finale and Decorum herbicides can be used for desiccation of soybean seed production fields of the evaluated cultivars. Pre-harvest desiccation did not change the protein and oil of the evaluated cultivars.