PHYSIOLOGICAL AND HEALTH QUALITY OF SOYBEANS SEEDS WITH DIFFERENT VIGOR LEVELS TREATED WITH Bacillus amyloliquefaciens

The utilisation of biological organisms in the context of seed treatment constitutes a subset of the technologies under consideration. A notable example of this is the application of Bacillus amyloliquefaciens in soybean seeds. The objective of this study was to evaluate the physiological and health quality of soybean seeds with varying degrees of vigour treated with B. amyloliquefaciens. Three concentrations of B.a. were subjected in four batches of seeds exhibiting varying degrees of vigour. Following the treatments, the physiological quality of the seeds was assessed using germination, tetrazolium, seedling emergence, cold test, seedling length and seedling dry matter mass tests. The health quality was assessed using the Blotter test. Soybean seeds exhibiting superior vigour had a more pronounced response to treatment with Bacillus amyloliquefaciens in terms of their physiological potential, as evidenced by enhanced emergence and initial growth. Batches exhibiting reduced vigour demonstrated a positive response to the treatment, indicating the microorganism's capacity to respond to varying levels of vigour. The use of B.a has been demonstrated to reduce the incidence of pathogens such as Fusarium sp., Macrophomina sp. and Aspergillus sp.. Furthermore, the administration of doubled doses of B.a. exhibited optimal outcomes.