VARIEDADES DE CANA-DE-AÇÚCAR SUBMETIDAS À APLICAÇÃO DE TRINEXAPAQUE ETÍLICO

Abstract

Sugarcane is an important source of farm in Brazil, which is the world's largest producer of this crop. Sugarcane maturation is one of the most important stages, since it determines the technological qualities of the raw material to be industrialized. To accelerate ripening and obtain high quality raw material, producers use chemical ripeners, and the application of these products has ensured a well-planned harvest and higher industrial yields. The objective of the present study was to evaluate the tecnological characteristics of the sugarcane varieties SP 80-1816 and RB 92-579 after the application of the trihexapac-ethyl growth regulator (0.8 L ha-1). The plants were evaluated at 0, 7, 14, 21 and 28 days after maturation application. Soluble solids content (° Brix), apparent juice sucrose content (Pol), apparent purity (PZA), fiber content, sugarcane pol (PC), reducing sugars (AR) and total recoverable sugar (ATR) were evaluated. Based on the results, it was possible to conclude that the application of trinexapque etched provided increasing increase in ° Brix, Pol, PZA and ATR, and decrease in AR of both varieties. The PC showed significant increase after the growth regulator application only in the RB 92-579 variety.