Deposição de gotas na cultura do trigo: comparação entre a aplicação com drones versus aplicação tratorizada

Abstract

The choice of the technology of application of pesticides is a fundamental strategy for the control of diseases and pests. The use of spray drones has become an alternative that is gaining space in different cultures. In this study, the objective was to verify the differences in the deposition of drops in the culture of wheat comparing the use of tractor sprayer and drone. The experiment was conducted in the municipality of São João da Urtiga/RS, with the cultivar TBio Toruk, in the tillering phase of the plants. Two areas were divided, one for each equipment, and each received treatment with water, using a fan spray nozzle. For data collection hydrosensitive paper placed at ground level was used and for analysis the following variables of deposition were considered: number of drops; volumetric median diameter; percentage of coverage; and drop density. The results showed that the treatment with drone was statistically more efficient than the tractor, especially considering the number of drops, percentage of coverage and droplet density. Thus it should be noted that the drones can be an important alternative in the context of pesticide application technology when considering the deposition of drops.