FIELD: farming and forestry; method of determination of possibility of performing aviation chemical treatment of arable land and forests. SUBSTANCE: prior to treatment, flow rate of working agent is determined for treatment at preset portion, after which onboard spraying equipment is adjusted to this flow rate and actual flow rate is checked during check-out flight for compliance with required value. If necessary, flow rate is corrected; immediately before treatment of object, temperature and pressure of air, as well as velocity and direction of wind in the region of treatment are determined. EFFECT: enhanced economical efficiency; reduced pollution of arable land and agricultural products with toxic components due to possibility of introducing chemicals at required concentration. 2 dwg, 1 tbl
