APLICAÇÃO DE FLUAZAINDOLIZINE NO CONTROLE DE MELOIDOGYNE ENTEROLOBII NA CULTURA DO ALGODOEIRO

Abstract

The cotton crop is growing exponentially in the Cerrado region of Brazil and is of great socio-economic importance. Phytosanitary problems are also growing at the same rate, including nematode attacks, which cause major losses in productivity. The species found is a major threat to cotton producers, due to the significant damage to the crop, the high level of reproduction and hosts and the lack of a source of resistance. The aim of this study was to evaluate the efficiency of the chemical nematicide fluazaindolizine in controlling Meloidogyne enterolobii under field conditions. The experiment was conducted in the municipality of Campos de Julio - MT, in the 22/23 harvest, in randomized blocks (DBC), with 6 treatments and 4 replications. The treatments were applied in the planting furrow at the following doses: Fluazaindolizine (500- and 700-mL p.c./ha), Fluopiram (300- and 500-mL p.c./ha) and Terbufós (15 kg p.c./ha) and untreated (Control). At 60 days after application (DAA), the population of M. enterolobii, H dihystera and P. Brachyurus in the roots was assessed and at 180 days after application, the yield was evaluated. The nematicide Fluazaindolizine was effective in controlling M. enterolobii, reducing the number of nematodes in the roots and increasing yields compared to the control.