The article presents materials on the study of effectiveness Hamla-550 EC (a.v., Chlorpyriphos 50% + Cypermethrin 5% permeate common spider mite an apple tree. preparation was tested at a consumption rate 1.0 l/ha. Ramboll high rates against thin mites trees; biological after treatment with drug 1.0l/ha 74.6%; maximum effect observed day 7 and amounted to 86.2%. Standard Nurel-D 55% fee l/ha sh...