RESUMOO Brasil é o segundo maior produtor de soja no mundo, onde cada vez mais tem-se exigido maiores quantidades e qualidade desta leguminosa. A aplicação de dessecantes que permite a antecipação da colheita em áreas de produção de sementes, tem sido utilizado para minimizar perdas de qualidade. Sedo assim, o objetivo deste trabalho foi analisar a influência da aplicação de dessecante em campos de produção de sementes de soja. O experimento foi conduzido em Delineamento Experimental Inteiramente Casualizado (DIC) disposto em esquema fatorial (4x2) com 4 repetições. Os tratamentos foram constituídos por quatro cultivares de soja: CD 2728 IPRO, SYN 1366C IPRO, BRS 7380 IPRO, BRS 7470 RR com e sem a aplicação de dessecante. Foram realizados os testes de germinação, envelhecimento acelerado, índice de velocidade de germinação, condutividade elétrica, classificação de vigor de plântulas, infestação de fungos na germinação e massa seca de plântulas. A utilização do dessecante influenciou negativamente a qualidade fisiológica de sementes de soja, com exceção do cultivar BRS 7380 RR. Palavras-chave:Glycyne max, cultivares, herbicida. INFLUENCE OF THE APPLICATION OF DESICCATION IN THE PHYSIOLOGICAL QUALITY OF SOYBEAN SEEDS ABSTRATCBrazil is the second largest producer of soybeans in the world, where more and more quantities and quality of this legume has been demanded. The application of desiccants that allows anticipation of harvesting in seed production areas has been used to minimize quality losses. Therefore, the objective of this work was to analyze different cultivars of soybean in influence of the application or not of desiccant in function of the physiological quality of the seeds. The experiment was conducted in the Laboratory of Seed Production and Technology with Experimental Design Completely Randomized (DIC) arranged in a factorial scheme (4x2) with 4 replicates. The treatments consisted of four soybean cultivars: CD 2728 IPRO, SYN 1366C IPRO, BRS 7380 IPRO, BRS 7470 RR with and without desiccant application. Tests of germination, accelerated aging, germination speed index, electric conductivity, vigor classification of seedlings, fungal infestation on germination and dry mass of seedlings were performed. The use of desiccant negatively influenced the physiological quality of soybean seeds, with the exception of cultivar BRS 7380 RR.
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