Atributos da qualidade fisiológica de sementes de soja tratadas com óleo de milho

Abstract

Soybean (Glycine max (L.) Merrill) is the agricultural commodity of greatest economic importance for Brazil, which stands out as the world's largest producer of the grain. However, production is affected by biotic and abiotic factors, such as the susceptibility of seeds to adverse handling and environmental conditions, which tends to deteriorate easily, especially during storage. One of the practices carried out with the aim of guaranteeing high seed performance under cultivation conditions is seed treatment, which is commonly carried out through the use of chemical products. In recent years, however, research has shown a growing interest in alternatives to chemical actives. Therefore, this work aimed to evaluate the effect of using clarified corn oil on the physiological quality of soybean seeds. The present study was conducted at the Seed Analysis Didactic Laboratory (SADL) of the Federal Technological University of Paraná, Campus Dois Vizinhos. Soybean seeds from the NA 5909 RG cultivar were used, stored in a natural environment. The experiment was arranged in a 5 x 5 bifactorial scheme, consisting of five doses of the mixture with clarified corn oil (T1 – 0.0 mL Control; T2 – 2.5 mL; T3 – 5.0 mL; T4 – 7, 5 mL and T5 – 10 mL per kilo of seed) and 5 storage periods (season zero; 30; 60; 90 and 120 days. Physiological quality assessments involved germination and vigor tests. Among the observations, it is concluded that the treatments did not interfere with the germination potential of the seeds, with the exception of treatment 5 at 120 days of storage. The vigor tests did not prove to be sensitive to classify the different treatments.