Effect of air blast sprayer application speed on the dye retention of coffee leaves

Improving the effectiveness of pesticide application for controlling insects, mites, and pathogens in coffee cultivation has been a major challenge farmers, researchers, consultants. The present study aimed to assess deposition distribution brilliant blue tracer canopy using Jacto’s Arbus 2000 Super Export EL Kuhn’s Twister air blast sprayers at different speeds (5 7 km h-1). experiment was conducted randomized block design, with 2 × factorial arrangement (two sprayer models two speeds), six replicates. After spraying, leaves were collected, assessed spectrophotometry. divided into lower, middle, upper heights, subdivided external internal crown positions. percentage difference spray between positions termed relative deposition. Spray differed only third section sprayers. In crown, speed affected dye both sprayers, whereas, when sprayer.