PHYSIOLOGICAL QUALITY OF CRAMBE SEEDS SUBMITTED TO DESICCATION WITH GLYPHOSATE AND STORED IN PAPER BAGSGEVALDO BARBOSA DE OLIVEIRA, AMANDA MARIA LEAL PIMENTA, FLAVIA SOARES AGUIAR, ANDREIA MÁRCIA SANTOS DE SOUZA DAVID, NELSON DE ABREU DELVAUX JÚNIOR, FLAVIO PINTO MONÇÃO, SAMY PIMENTA, MARIA JOSIANE MARTINS, LUCAS JESUS LEAL PIMENTA, ADALBERTO MENDES LO
Crambe (Crambe abyssinica Hochst) is an oilseed species with great economic potential, which is characterized by adapting to antagonistic environmental conditions and good rusticity. However, uneven seed maturation is a limiting factor for obtaining quality seeds. The use of desiccants for anticipating harvest can reduce seed exposure in the field after physiological maturation. Thus, the aim of this work was to evaluate the effect of different glyphosate desiccant doses applied before harvest on the physiological quality of crambe (Crambe abyssinica Hochst) seeds at different storage times. A randomized block experimental design in a 5 x 5 factorial scheme was used, with five RoundupÂ® glyphosate doses (0.0, 0.5, 1.0, 1.5 and 2.0 g L-1) applied before harvest and five storage times (0, 3, 6, 9 and 12 months). After harvesting and processing, seeds were placed in paper bags and submitted to storage. During storage, seeds were submitted to physiological quality determination, where variables germination, seedling emergence, emergence speed index, first count, fresh mass and dry mass of seedlings and electrical conductivity were evaluated. The variables analyzed demonstrated that the physiological quality of crambe seeds was reduced with increasing herbicide doses.