Avaliação de genótipos de batata-doce ((Ipomoea batatas (L.)Lam.) Para produção de etanol em tres épocas de colheita(120)(150) (180) dias após o plantio (DAP)

Abstract

Sweet potato (Ipomoea batatas L.(Lam.)), an easy-to-grow plant, with wide adaptation, high tolerance to drought and low production cost, is very popular and appreciated throughout the country, cultivated mainly in family farming. It is a multipurpose plant, in which all parts are usable: in addition to its use in human and animal food, it can be an important alternative for the production of biofuels (alcohol). Currently, there is a great yearning at a global and national level, in order to find solutions that reduce energy dependence on fossil fuels, associated with the development of alternative forms of energy production that have less impact on the environment. Ethanol fuel has a considerable share in the Brazilian energy matrix, and can be obtained from crops with high concentrations of carbohydrates. Therefore, the objective of the present research was to identify the agronomic potential for the production of ethanol from the tuberous roots of potato genotypes -sweet developed by the Plant Genetic Improvement Sector of the Agricultural Engineering and Sciences Campus of the Federal University of Alagoas, in the Alagoas Forest region. The test was carried out in the Plant Genetic Improvement Sector, at the field level and chemical analyzes were carried out in the laboratory of EMBRAPA Tabuleiros Costeiros, located in Rio largo Alagoas and laboratory of Campus AC SIMÕES, in Maceió Alagoas. Ten sweet potato genotypes were used, including two varieties, Sergipana and Rainha da Prata. The design used was in randomized blocks in a split-plot scheme using 10 sweet potato genotypes, in 3 replications. The plots were formed by three rows of 15.00 m long, 0.30 m high, containing 37 plants per row, spaced 0.80 m x 0.40 m. The central swath was considered as a useful area. For this, the agronomic traits were analyzed: number of commercial roots (NRC), average commercial root weight (PMRC), commercial root diameter (DRC), commercial root length (CRC). ), total root yield (RTR), and the STARCH content. Keywords: Productivity, Biofuel, Carbohydrates.