The use of aircraft in the mechanization of agricultural production

aerial surveying aeronaves agricultural chemicals aircraft control de enfermedades control de incendios control de plagas disease control economia economics economie ensemencement equipo de combatir incendios escarda fertilisation fertilizer application fire control fire fighting equipment fotografia legislation lutte antiravageur mechanization obreros occupational hazards pest control photographie photography planification planning procedimiento de la encuesta production produit agrochimique pulverizadores riesgos ocupacionales risque professionnel safety seguridad siembra sowing sprayers surveying travailleur weed control workers