QUALIDADE DE SEMENTES DE ALGODÃO BRS 286 EM FUNÇÃO DO DESLINTAMENTO E ESPAÇAMENTOS

Abstract

The upland cotton is one of the top 10 species domesticated by mankind, produces the fiber, its main product and the oil used in food and energy production. In the world more than 150 countries produce or consume the cotton lint. The aim of this study was to evaluate the quality of BRS 286 cotton seeds as a function of delinting and spacings. The seeds of BRS 286 were provided by the National Center for Cotton Research (CNPA), Campina Grande. The experiment was conducted in the experimental area in the garden located in the "Chã de Jardim", belonging to the Agricultural Science Center, Federal University of Paraíba, Campus II, Areia. The experiment was conducted with the following factorial design 2 x 5 using the design in causalizados blocks (DBC), consisted of 4 blocks and 10 treatments, totaling 40 experimental units. The following characteristics were evaluated: seedling emergence (EME -%), first count (TPC -%), emergency speed index (IVE), weight of green matter (PMV - g) and dry weight (PMS - g ). Where we observed significant effects for emergency, emergency speed index and weight of green matter. Accordingly the results obtained, it is concluded that the seeds without lint ensure a better effect when used in spacings of 0.70 and 0.90 m for seeds with lint and spacing of 0.80; 0.85 and 0.90 m for seeds without lint.