CONTROLE BIOLÓGICO DE FITONEMATÓIDES NA CULTURA DA SOJA

Abstract

Biological control of phytonematodes represents a promising and sustainable approach to protect soybean crops. The integration of different strategies, combined with the use of biotechnological tools, can significantly contribute to improving agricultural productivity and the sustainability of the production system. The objective of this work was to evaluate the biological control of phytonematodes and their impacts on the productivity parameters of soybean crops in the conditions of Mineiros, Goiás. The study was conducted at Fazenda Invernadinha, a rural area in the municipality of Mineiros, Goiás, Brazil. The experimental design used was randomized blocks with 6 treatments, corresponding to the following phytonematode management, via seed treatment. Data on nematode infestation were taken in the R1 phenological phase, where 4 random plants were collected from each plot. The analyzes included identification and biological accounting of nematodes in the root system and soil of the species: Pratylenchus brachyurus, Heterodera glycines, Helicotylenchus sp and other free-living nematodes. It is concluded that treatments based on B. amyloliquefaciens + T. harzianum, T. asperellum and B. amyloliquefaciens are highlighted as good options for controlling soil nematodes. The combination and rotation of these treatments, along with other management practices, can provide sustainable and effective control of soil nematodes, improving the health and productivity of the soybean crop.