Eficiência do controle biológico e químico de nematoides na cultura da cana-de-açúcar

Abstract

The sugarcane crop is subject to nematode infestation and, therefore, exposed to yield losses. As the eradication process of these organisms is difficult, new technologies that promote the timely control of nematodes at the beginning of root development are important tools to increase agricultural productivity and maintain the sustainability of the sugar and alcohol industry. The objective of this work was to define the agronomic efficacy of the chemical nematicides Benfuracarb, Carbosulfan, Carbofuran and a biological nematicide composed of Bacillus subtilis and Bacillus licheniformis, treated in the furrow on sugarcane stalks at the time of planting, verifying the control of Pratylenchus zeae in the field, with the variety of sugarcane RB867515. The experiment was conducted in a completely randomized design (DIC) and the tiller, diameter, height, biomass production and Pratylenchus zeae population were evaluated through laboratory analysis. The results were submitted to analysis of variance by the F test and the analysis of means comparisons by the Tukey test at 5% probability. The plots treated with nematicides obtained biomass production above the control area, thus indicating the effectiveness of the control.