Parâmetros qualitativos e maturação de genótipos de sorgo sacarino em Santa Maria-RS

• Autor(a) principal: Biondo, Jean Cecchin
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações do UFSM
• Texto Completo: http://repositorio.ufsm.br/handle/1/5146
• topic: Etanol; Brix; Caldo; Sorghum bicolor; Ethanol; Brix; Juice; Sorghum bicolor; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

The Brazilian ethanol production is mainly based on the sugarcane crop, however in the off-season mills plants cease processing, decreasing revenues as a result of the shortage of raw materials. It is in this scenario that fits the sweet sorghum, being able to provide quality material during the off-season sugarcane, in the summer months. The objective of this study was to evaluate the qualitative parameters and maturation curves of eleven genotypes of sweet sorghum, aiming ethanol production. Field experiment was conducted in Santa Maria-RS, in two growing seasons (2012/13 and 2013/14). The experimental design was randomized blocks with three replications and the treatments consisted of eleven genotypes, seven varieties (BRS506, BRS511, Fepagro 17, Fepagro 19, Past 81-04, Past 29-51 and Past 29-49) and four hybrids (CV007, CV147, CV568 and CV198). The quality of sweet sorghum juice was evaluated based on parameters: sucrose content (%), reducing sugars (%), purity (%), total soluble solids (°Brix), total recoverable sugar (kg t-1), fiber (%) and ethanol production (l ha-1). It was determined the maturity curve to characterize the industrial use period (IUP). The genotypes BRS506, BRS511 and CV198 showed IUP over 30 days. The BRS506 and BRS511 genotypes showed better characteristics for ethanol production.