Evaluation of RPAs for spraying in differents cultures Avaliação de RPAs para pulverização em diferentes culturas

Abstract

The present work had as objective to study and to validate the application of defenses through RPAs (Remotely Piloted Aircraft), commonly denominated Drones. The experiment happened at APTA East Center in Ribeirão Preto, Sao Paulo. The herbicide solution glyphosate 1.5 kg ha-1 (Roundup WG®) was used using 15 L ha-1 of syrup volume. The RPA that overflew the study area at three different altitudes together with three different spray nozzle models in a range of 50 m x 5 m, with water-sensitive papers being distributed in these bands to verify the size, quantity and distribution of drops that fell on the plants. Once the information was counted, it was expected that it would be possible to create different application models, leading to greater efficiency and effectiveness of the applications. In addition, avoid waste of defense, contributing to decrease environmental impacts and increase safety in the field (lower risk of intoxication). The results allowed to identify competitive advantages, highlighting the practicality and speed, besides allowing localized control of weeds, without the need of tractors, which increases soil compaction and requires greater investment in equipment. From these results, use protocols will beestablished for various agricultural crops, such as: Peanut (Arachis hypogaea L.), Sugarcane (Saccharum officinarum L.), Soya (Glycine max L.), Maize (Zea mays).