Qualidade de semente de soja produzida com diferentes aplicações de inseticidas para controle de percevejos

Abstract

Soybean is the main legume produced in the country, having great importance in the Brazilian trade balance. It is known that the culture has several detractors, being one of the main the bedbugs, that entail in severe damages and condemnation of seed lots due to the quality affected, diminishing the productivity and profitability of the producer. In this sense, this work had the objective of identifying and quantifying which treatment maintains the quality of seeds tied to the control of bedbugs during the 2016/2017 harvest. A loss survey was carried out in three locations: Francisco Beltrão, Vitorino and Honório Serpa, all located in the state of Paraná. The experimental designs was randomized complet blocks with four replicates. Six treatments were tested, with five chemical insecticides and one control (no chemicals). The evaluations consisted of: bed bug sampling, grain yield, percentage of chopped and unviable seeds and seed quality through germination and vigor in tetrazolium. The insecticide Lambdacialotrin + Tiametoxam presented greater control in the bed bug population and a higher percentage of germination and vigor, guaranteeing a better physiological seed quality and higher productivity.