Qualidade fisiológica de sementes de algodão tratadas quimicamente e armazenadas em condição ambiente

Abstract

Considering the importance of treatment and maintenance of seed quality during storage, the aim through this work was to evaluate the physiological performance of cotton seeds chemically treated and stored at room temperature. The experimental design was completely randomized with six replications in factorial scheme 9 x 6 (treatments x evaluation time). The following seed treatments were used: T1 - control (no treatment); T2 - Fungicide Carbendazin 150g / l Tiran 350g / l (600 ml / 100 kg seed); T3 - Fungicide Triadmenol 150g / l (200 ml / 100 kg seed); T4 - Fungicide Pencicurom 250g / l (300 ml / 100 kg seed); T5 - Fungicide Azoxystrobin 75g / l, Metalaxyl-M 37,5g / l Fludioxonil 12.5 g / l (300 ml / 100kg seed); T6 - insecticide Imidacloprid 150 g / l Thiodicarb 450g / l (2400 ml / 100kg seed); T7 - insecticide thiamethoxam 350 g / L (600ml / 100kg of seeds); T8 - for treatments compound 2, 3, 4 and 6 mentioned above; T9 - Composed by treatments 5 and 7. The evaluation of the physiological quality of cotton seeds was performed at 0, 30, 60, 90, 120 and 150 days of storage through the germination and vigor tests (low temperature and accelerated aging). The results help determine that the product (triadmenol) and (carbendazin and tyranny + triadmenol + Pencicurom + imidacloprid and thiodicarb) reduce the percentage of germination and vigor of cotton seeds. The physiological quality is adversely affected as increases the storage period.