INTERAÇÃO DE BIOESTIMULANTE ASSOCIADO A INSETICIDAS NO TRATAMENTO DE SEMENTES DA CULTURA DO MILHO PARA CONTROLE DO PERCEVEJO-BARRIGA-VERDE

Abstract

Agriculture is one of the main economic activities in Brazil. The occurrence of pests has become one of the main factors that limit or reduce the final production of agricultural crops. In the case of the main pests of the corn crop, the green-bellied bug stands out. Thus, the objective was to evaluate the reduction of injuries caused by the use of biostimulants associated with insecticides in the treatment of seeds in corn. The tests were carried out in the experimental area of the Agricultural Research Center and in a greenhouse at the University of Rio Verde. In the field, no-tillage was used, with 0.5 m spacing between lines, with natural pest infestation. In the greenhouse, gardeners were used and three plants were infested per gardener. The infestation occurred in three moments: i) one day after the emergence of the plants; ii) 7 days after the emergence of the plants; and iii) 15 days after the emergence of the plants. In the tests presented, significant differences were observed between the times of plants infestation with bedbugs and treatments for the injury note, mortality and root and aerial part weights. Treatments based on thiamethoxam produced lower injury score averages and higher mortality rates when compared to treatments containing only cyantraniliprole. Treatments based on cyantraniliprole did not differ from treatments without insecticides application. As for root and shoot weights, higher averages were observed in treatments containing thiamethoxam, which differed significantly from treatments without insecticide and containing cyantraniliprole.