Alvarenga, Cleyton Batista deZampiróli, RenanCunha, João Paulo Arantes Rodrigues daRinaldi, Paula Cristina NatalinoCunha, Bruno Amâncio daFaria, Layanara Oliveira2024-08-052024-08-052024Alvarenga, Cleyton Batista de; Zampiróli, Renan; Cunha, João Paulo Arantes Rodrigues da; Rinaldi, Paula Cristina Natalino; Cunha, Bruno Amâncio da; Faria, Layanara Oliveira. A pplication rate and hydraulic tips used in remotely piloted aircraft affect the phytosanitary products in coffee plant canopies. Acta Scientiarum. Agronomy, Maringá, v. 46, p. 1-11, 2024.1807-8621Doi: 10.4025/actasciagron.v46i1.62969http://www.sbicafe.ufv.br/handle/123456789/14503Most coffee (Coffea arabica) phytosanitary management techniques are performed using ground-based equipment, and remotely piloted aircraft are a recent alternative. Therefore, this study evaluates the effect of different application rates and hydraulic tips used for spreading phytosanitary products on coffee crops using a remotely piloted aircraft, assisted by artificial targets and dye tracing. The experiment was a 4 × 3 factorial randomized block design with four tips (XR 110-01, TT 110-01, AIXR 110- 015, and TTJ60 110-02) and three application rates (8, 12, and 16 L ha-1 ). Hydrosensitive paper was used to analyze the droplet spectrum, and the Brilliant Blue tracer was used to detect spray deposition. The DJI Agras T20 remotely piloted aircraft was used to apply the phytosanitary product. Speed, flight height, and application range were maintained at 5.56 m s-1 , 2 m, and 5 m, respectively. The flight direction was perpendicular to the crop planting lines. The application rate and hydraulic tip jointly controlled the accumulation of droplets on the target according to its position in the plant canopy. Therefore, remotely piloted aircraft can be used in coffee phytosanitary management, particularly to control targets that predominately occur in the upper third of the plant canopy.pdfenOpen Accessdepositiondroplet spectrumdroneaerial applicationCoffea arabicaCafeicultura::Implantação e manejo da lavouraArtigo