Desempenho produtivo de cana-de-açúcar sob uso de bioestimulante no brejo paraibano

Abstract

Sugarcane is a species of Poaceae considered of high importance worldwide, with Brazil being the largest producer. However, some edaphoclimatic obstacles hinder the standardization of agronomic management, which ends up limiting its productive performance. To overcome such problems, the development and diffusion of new technologies is crucial, as is the case of biostimulants. In this sense, this work aimed to evaluate the effect of the use of pyroligneous extract on the productive performance of sugarcane cultivated in Brejo Paraíba. Field work was carried out between 2021 and 2022, at the Chã de Jardim Experimental Farm (UFPB/CCA), Areia, Paraíba, Brazil, using sugarcane cultivars (RB041443 and RB867515). The experiment was set up in a randomized block design with 10 treatments, four replications, totaling 40 plots. Four doses of the biostimulant product (5, 10, 15 and 20 L ha-1 ) + control (0 L ha-1 ) were used. To observe the effect of the treatments, growth and productivity variables were evaluated. The results indicate that the doses used generated different effects in the studied cultivars. It was observed that a dose of 15 L ha-1 combined with cultivar 1 (RB041443) showed greater gains in TCH. Also, cultivar 1 stood out in most of the analyzed variables, except for the stem diameter variable.