TY - JOUR T1 - Comparative analysis of operational capacity and acquisition costs of manned agricultural aircraft and spraying drones JO - Engenharia Agrícola A1 - Cornago Junior, Vicente M. A1 - Antuniassi, Ulisses R. SN - 0100-6916 UL - 10.1590/1809-4430-Eng.Agric.v46e20240015/2026 VL - 46 Y1 - 2026 PB - Brasil ER -