DIFERENTES DOSES DE ZINCO EM CULTIVARES DE CANA-DE-AÇÚCAR

Abstract

Zinc deficiency can result in reduced tillering, shortening internodes and thinner stalks. The present study aimed to evaluate the biometric behavior and technological attributes of two varieties of sugarcane, grown under the application of different dosages of zinc sulfate in an Oxisol. The present study was developed at the Sugarcane Research Unit, located at the Federal Institute of Goiano - Campus Ceres, in partnership with CRV Industrial, in a eutrophic Oxisol. The experimental design was completely randomized blocks, in a factorial scheme 4 x 2, with three replications. The treatments consisted of four doses of zinc (0, 5, 10 and 15 kg ha-1 ) applied in two sugarcane cultivars, RB92579 and SP801816. The variables evaluated were plant height (PH), number of leaves (NL), stem diameter (SD), leaf area (LA), stem productivity (PRO), broth pol (BP), apparent sucrose content (POL), fiber content (Fiber), total reducing sugars (TRS), reducing sugars (RS). For the data obtained, analysis of variance was performed using the statistical software Sisvar. The application of different doses of zinc showed significant results only for stem diameter (SD) for the dose of 6.5 kg ha-1 of Zinc, the other biometric variables did not show significance. Future studies are recommended to improve the results of this study.