Eficiência do polímero GRIP® aplicado em pré colheita na qualidade de semente de soja

Abstract

In search of innovative technologies that bring results in maintaining the physiological quality of soybean field, installed in areas not conducive to seed production, the primary need of I. Riedi company is to produce their own seeds, to thus facilitate the marketing logistics. This study aimed to evaluate the performance of the product based on latex and silicone trade name Grip®, in reducing the damaging effects of rain in the pre-harvest soybean seed production fields phase. The experiments were conducted in two different regions in altitude within the state of Paraná in the city of Clevelândia at 925m altitude and Cascavel to 550m above sea level, located in the west and southwest of the state, respectively. Were tested three treatments: seeds harvested before the rain, rain after application Grip® with and without rain after application Grip®. Both experiments were conducted using the cultivar SYN1059 RR, a completely randomized with six replications, randomized blocks. The statistical program used was Minitab with Tukey at 5% significance. At the moment the seed was in the field pre-harvest stage and preceding a rain in 24 hours, was executed application on portions of the polymer. After the rain seeds were harvested and compared in laboratory results (germination and vigor) at zero time (immediately after harvest) and 3 months of storage. It is concluded that for low-altitude region Grip® the product does not preserve the physiological quality of soybean seeds produced after rain. In the high-altitude region the product showed superior performance to force after the soybeans have received rain in the pre-harvest.