FIELD: agriculture. SUBSTANCE: method involves carrying out treatment at insecticide liquid flow rate per second determined from formula: 
, where Qi is i-th insecticide liquid flow rate per second, l/s; Hi is i-th insecticide flow rate, insecticide dosage, l/ha; Vpr is prescribed flight speed of agricultural aircraft in the process of aerial spraying of insecticide onto plants, km/h; Δvi Vi is constant (aerodynamic + instrumental) error of aircraft speed measuring indicator, km/h; W is working tool width, m; t is air temperature during aerial spraying, C; P is air pressure during aerial spraying, mm of mercury column; Sw is wind speed at the moment of aircraft flight over estimation line, m/s; α is direction of wind relative to flight line, deg; Ci is i-th concentration of insecticide liquid,%. When Qi value is determined, Δvi Vi is used with "+" sign in case constant airborne speed indicator error has "-" sign, and vice versa. W cosα addend is used with "+" sign in case downwind aircraft flight relative to estimation line is carried out and with "-" sign in case upwind flight is carried out. Upon spraying, objects of treatment are placed into water vessel and covered with netted insulator. Insects are placed under water vessel. Optimum insecticide dosages and liquid flow rates are determined by death rate, as well as by susceptibility of sprayed areas to natural effects. EFFECT: reduced labor consumption and increased efficiency. 2 cl, 1 ex
