Produção de cana-de-açúcar: Origem das gemas, adubação e variedades

Abstract

Sugarcane is one of the most important crops at a socioeconomic level in Brazil, being the main raw material for the production of ethanol, sugar and forage for animal feed. During the cultivation cycle, it is necessary to carry out several activities to obtain the maximum productive capacity of the culture. Thus, the production of seedlings for sugarcane is one of the most important phases of the production process. Given the above, the objective of this work was to evaluate the effect of the origin of the propagules and organic fertilization on the development and productivity of a commercial and a regional variety of sugarcane. The experiment was conducted in the experimental field of the Center for Agricultural Sciences and Engineering of the Federal University of Espírito Santo (CCAE-UFES) located at BR 482, Alegre - ES. The sugarcane propagules used in the planting of the experiment were of the variety RB867515 (commercial) and Vendanova 01 (regional). The number of sprouts per treatment was evaluated, making six evaluations after planting: 30, 60, 120, 160, 190 and 260 days after planting (DAP). For the analysis of the crop production, an evaluation was carried out at the end of the cycle (365 DAP), measuring the weight of the stalks with and without tip (Kg), length (m) and diameter of the stalks (cm), amount of broth produced (ml) per stalk and the soluble solids content (ºBrix) of the juice, calculating the total productivity of plants and stalks. Data were subjected to analysis of variance at 5% significance by the F test, using Tukey's test at 5% probability for comparison of means. The results indicate that medium-origin propagules, variety Vendanova 01, without organic fertilization were the ones with the highest tillering, length and diameter of stalks, and total productivity of plant and stalks. Keywords: propagules, organic fertilization, sprouting, production.