Caracterização da pulverização por veículo aéreo não tripulado (VANT)

Abstract

UAVs (Unmanned Aerial Vehicles) have been used in agricultural practices such as spraying. However, little is known about the technical aspects of this technology. In this sense, the objective of this project is to evaluate the spraying characteristics of a UAV. The spraying characteristics of a UAV, with a spray volume of 10 L ha-1, were evaluated. Three tests were carried out. In the first test, the distribution of drops in the spray range was evaluated, using only water. In the second test, the efficiency of spraying a herbicide in the desiccation of forage radish was evaluated. In this second desiccation trial, treatments were carried out with application via UAV, conventional application (precision spraying) with two doses of glyphosate herbicide (3 and 4 L ha 1) and control without application. In the third test, the distribution of the drop in the canopy of the corn crop was evaluated, in the upper, middle and lower parts of the plants (with hydrosensitive paper). The tests were performed with 4 replications. Spraying with UAV presents homogeneity and stability in the distribution of drops, with a spray range of 8 meters, with an application height of 3.5 meters. The control efficiency of turnip plants is similar between application rates and application method with ground spray or UAV. The application with the UAV presents homogeneity and stability in the distribution of drops, efficiency in the application of the herbicide and good distribution of the drops in the canopy of the corn crop.