Rendimento e qualidade fisiológica de sementes de feijoeiro em função da dessecação química das plantas

Abstract

The present study aimed to evaluate the effect of desiccant, at different times, on bean plants and its effect on yield and physiological seed quality. The study was conducted in the city of Campos Novos - SC in commercial farming of bean seeds. We used the cultivar Carioca TAA Ball Filled beans. The products were used as desiccants Finale (glufosinate ammonium) - (400g ai / ha ̄ ¹.) Applications being carried out with 30, 50, 70, 90% of pods showing grains with characteristic color of the cultivar. and Reglone (diquate) - (400g ai / ha ̄ ¹.) 50, 70, 90 and 100% of the pods having grains with the characteristic color of the cultivar. Seeds were harvested when they reached 16% moisture and dried to 13%. After the process of threshing, cleaning, sorting and uniformity in size, the seeds were stored in paper bags and stored in uncontrolled conditions for further evaluation of the physiological quality. Tests included productivity, thousand seed weight, germination, accelerated aging and field emergence. The results were subjected to analysis of variance and the means compared by Tukey test at 5%, using the statistical program Assistat. The Finale product affected seed quality at all times of application, especially in the first season of application. The Reglone product did not affect seed quality demonstrando.ser a good option for early harvest of bean seeds. The products tested did not affect productivity in any of the different periods evaluated.