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Soybean is one of the main grain crop production in Brazil, this way is featured in phytosanitary products use for the pests control. The application technology used have important role in quality and safety of agricultural products, as well as environmental and human. The climatic conditions perform great influence on quality of application, thus indicating its safety and effectiveness of control. The aim of this work was to evaluate the soybean insecticide application quality , in different climatic and operating conditions. The study was conducted in commercial tillage in Itaqui/RS, during 2014/15 season. The applications were performed on 10 AM, 2 PM and 6 PM, with 20, 35 and 50 lbs.pol-2 pressure, with and without mineral oil. The spray deposition was evaluated with hidrosensible cards and processed by Gotas software. The evaluated parameters were drops number, diameter classes, drops density and mean volumetric diameter (MVD). The results showed that 2 PM was the situation less suitable climatic conditions for application; the association of higher pressures with mineral oil, allowed to increase the number and density of droplets, as well as the drops distribution uniformity in canopy, allowing the parameters evaluation under inadequate conditions.

QUALIDADE DA APLICAÇÃO DE INSETICIDA NA CULTURA DA SOJA REALIZADA EM DIFERENTES CONDIÇÕES CLIMÁTICAS E OPERACIONAIS