INFLUÊNCIA DO USO DE TRATAMENTO DE SEMENTES NA GERMINAÇÃO DA SOJA (Glycine max (L.) Merrill)

Abstract

The seed treatment in soybean (Glycine max (L.) Merrill) is a strategy widely used to protect the crop in the first days of cycle and ensure a good initial development of the crop to increase grain yield. The objective of this study was to evaluate the effect of the interaction between abamectin and fipronil along with the biological inoculant Bradyrhizobium japonicum, in the germination of soybean seeds. The experiments were conducted in laboratories, where the germination test and electrical conductivity test were performed, distributed in five treatments, each with four repetitions. It was observed that the seed treatment with Bradyrhizobium japonicum only favored the germination of seeds and reduced the number of abnormal seedlings compared to other treatments, while the treatment with the association between Abamectin, Fipronil and Bradyrhizobium japonicum obtained the lowest average of normal seedlings, characterizing as a negative effect the association of the tested products in seed treatment. In the tests performed it was possible to conclude that the inoculant applied alone in seed treatment had a positive effect on soybean seed germination compared to other treatments evaluated. The association of the biological product with chemical pesticides, however, interfered negatively in seed germination, indicating possible chemical incompatibility between them. The technologies present in the agricultural sector are constantly evolving. Thus, conducting more in-depth research on this topic is essential to disseminate quality technical information to producers, helping them in their decisions.