The effects of growth regulator of the auxin and gibberellin groups on the density of the acarid fauna parasitizing on raspberry were tested in 1998 - 2000. Representatives of four families (Tetranychidae, Eriophidae, Phytoseiidae and Tydeidae) were found during the period of investigation. The acarid fauna had the highest density with the variants treated with GA3 - 100mg/l, Alar - 100 mg/l, and Alar - 150 mg/l. In terms of percentages, the representatives of the family Eriophidae were of the largest relative proportion, as in GA3 - 30 mg/l experiment it was the smallest, and it increased with the variants treated with GA3 - 100 mg/l, Alar - 50 mg/l, and Alar - 100 mg/l.
The effects of growth regulators on the density of the acarid fauna parasiting ob raspberry