Níveis de deposição de produtos líquidos com aplicação aérea utilizando adjuvantes

Abstract

The use of agricultural aircrafts has been providing larger flexibility to the handling of implantation of cultures at reduced costs. The adjuvants can aid the spray with a larger safety and quality in the deposition of pesticide products reducing contaminations elapsed by drift. In this context, study evaluation of the effects of the addition of different adjuvants to the spray and your influence of distribution of aerial applications and in the potential risk of drift. Three adjuvants were appraised and the water. An aircraft Air Tractor AT-401B was used endowed with 76 hydraulic nozzles of plane jet XR 8008 VB. The density and in the size of drops was determined. For the collection it was used water sensitive paper and the samples were analyzed with the software e-Sprinkle. Except for the Emultec plus®, the adjuvants addition to the spray improved the deposition in moments of larger temperatures and smaller relative humidities, what increased the density and the size of drops when compared with the water, resulting in an effective more uniform and an application with smaller drift risk and, subsequently a smaller environmental contamination.