Avaliação agrotecnologica de variedades de cana-de-açúcar para produção de etanol, na região central do Estado do Tocantins

Abstract

The present study had as main objective to characterize the performance of Agrotechnological varieties of sugar cane for ethanol production that grown under environmental conditions of the central state of Tocantins. The method of data collection was divided into two phases: the first phase consisted in the collection of bibliographic data, enabling the development of the theoretical framework, the implementation of the experiment and analysis of the results found in the experimental evaluation. Already in the second phase of work was developed fieldwork, in the municipality the Paraíso do Tocantins, where the experiment was conducted, being composed of seven varieties of cane sugar RB 72454, RB 835486, RB 855113, RB 855536, IAC 862480, SP 791011 and RB 867515. In the second phase fieldwork , in the above county, an experiment was conducted with seven varieties of cane sugar, the latter being the most widely grown variety in the country, used as reference in this work. Data collection for the evaluation of the experiment took place at the end of the cane plant cycle being measured biometric, technology and projection of expected profitability variables, allowing to quantify the potential of the phenotypic characteristics of the genotypes investigated. It was observed that the RB range 855536 was the most productive production environment and this IAC 862480 had the lowest performance in the group. It is noteworthy that the variety RB 867515, regarding biomass productivity and sucrose had their averages upper than experiments average. About phenotypic potentials achieved for all the results obtained, it is concluded that all varieties were similar to or higher than the reference values for the industrialization of raw material indices thus demonstrating a favorable environment for crop performance