QUALIDADE FISIOLÓGICA DE SEMENTES DE FEIJÃO COMUM SUBMETIDAS A TRATAMENTO DE SEMENTES COM INSETICIDA E FUNGICIDA

Abstract

Seed treatment with insecticides and fungicides is a routine practice that assists in managing early pests and diseases in common bean crops. However, information regarding the effects of insecticides and fungicides on seed physiological quality is still limited. Therefore, the objective of this study was to evaluate the effect of seed treatment (TS) with insecticide and fungicide on the germination and vigor of common bean seeds. The experiment was conducted in a completely randomized design, with six treatments and four replications. The treatments used were: common bean cv. BRS FC401 + insecticide; common bean cv. BRS FC401 + insecticide and fungicide; common bean cv. BRS FC401 without TS (control); common bean cv. BRS FC402 + insecticide; common bean cv. BRS FC402 + insecticide and fungicide; common bean cv. BRS FC402 without TS (control). The following tests were performed: germination test, electrical conductivity, emergence speed index (ESI), germination speed index (GSI), and shoot and root length of seedlings. The results showed that ST significantly influenced the physiological quality and initial development of the seedlings. Seed treatment with Pyraclostrobin + Thiophanate-Methyl + Fipronil had a positive impact on germination and emergence speed, while Thiamethoxam improved cell membrane integrity of seeds in cv. BRS 401.