Avaliação de genótipos de sorgo biomassa com foco em produção de energia

Abstract

Aiming to seek alternative raw materials to eucalyptus for use in the production of renewable energy, this work aimed to evaluate the morphogronomic performance of experimental genotypes of Sorghum bicolor (L.) Moench (sorghum biomass), seeking to select materials that show high productivity of dry biomass of the aerial part (leaves, stems and panicles). The experiment was conducted in the experimental field of Embrapa Agrossilvipastoril in the city of Sinop - MT, in the 2019/2020 crop. Twenty-five sorghum genotypes were evaluated (23 of the biomass type and 2 forage) distributed in a randomized block experimental design, with three repetitions. The variables analyzed were: days to flowering, plant height, green mass production and dry mass production. The data obtained were submitted to variance analysis, confirming the existence of significant difference at 1% probability for all characteristics, showing genetic variability among materials. Then, the means for the different characteristics measured in the genotypes were grouped by the method proposed by Scott-Knott, at 5% probability. Hybrids 201934B001, 201934B002 and BRS 716 stood out regarding the production of green mass, exceeding 90 t ha-1, with average dry mass production exceeding 37 t ha-1. These three genotypes are superior from the agronomic point of view, aiming at the production of biomass for energy generation.