Influência do tratamento biológico com Trichoderma asperellum na qualidade fisiológica de sementes de soja (Glycine max)

Abstract

Biological seed treatment has gained increasing importance in agriculture due to its potential to enhance early crop performance, particularly through the use of beneficial microorganisms such as Trichoderma asperellum. The physiological quality of soybean seeds is directly associated with early developmental stages and may be influenced by practices such as microbiolization and biopriming. This study evaluated different doses of T. asperellum applied to soybean seeds of the cultivar ST711 I2X, aiming to assess their effects on germination, normal seedling formation, and the occurrence of abnormalities. Five treatments were conducted under controlled laboratory conditions, following standardized seed analysis methodologies. The results showed that germination remained high across all treatments, ranging from 88% to 92%, with no statistically significant differences among the evaluated doses. Although the intermediate dose (50%) showed a trend toward better balance in germination and seedling development, higher doses tended to increase the incidence of abnormal seedlings. These findings indicate that T. asperellum does not negatively affect the physiological quality of soybean seeds under the studied conditions, supporting its safe use in seed treatment, while highlighting the importance of appropriate dose selection to avoid potential undesirable physiological responses.