MORFOMETRIA, PRODUÇÃO E QUALIDADE INDUSTRIAL DE DUAS CULTIVARES DE CANA-DE-AÇÚCAR SOB ADUBAÇÃO NPK EM CERES (GO)

Abstract

The present study aimed to evaluate the growth and industrial quality of two varieties of sugarcane submitted to fertilization in the cerrado. The experimental design used was completely randomized (DIC) with four replications in a 2x4 factorial scheme, with two sugarcane cultivars (RB92579, SP801816) and four fertilization doses, with 0, 250, 500 and 750 kg ha-1 formulation NPK 05-25-25. The variables analyzed were: number of tillers (NT), plant height (PH), stem diameter (SD), leaf area (LA) ° BRIX, Pol, PZA and ton of stems per hectare (SPH). The cultivar SP801816 was superior in height, number of leaves and number of buds, while cultivar RB92579 stood out for tillering. The end-of-cycle variables had increasing linear responses to doses, except TCH. The doses with the best response varied for the variables from 500 to 750 kg ha-1 of the NPK formulation. Yield was little affected by the doses of NPK and with superiority of the cultivar SP801816.