Shestopalov M. Pests of agromeliorative wood plantings of foothill Crimea and measures limiting nocuity of the most dangerous species

The thesis is dedicated to studying of specific structure of pests of fieldprotecting forest belts and wood plantings, adjoining to agricultural lands of foothill Crimea and the measures limiting nocuity of the most dangerous species. 94 species of pests in fieldprotecting forest belts are revealed during researches. The most dangerous were the American white butterfly and San Jose scale, the Crimean snout beetle and gypsy moth. In wood plantings of foothill Crimea 55 species of pests are revealed. Gypsy moth was very dangerous in forest areas. Under tree covers in field-protecting forest belts 11 species of pests (locusts, pentatomid, etc.) and 17 species of terricolous (dors, click beetles, darkling beetles, columbine borers etc.) are re-vealed. Weather conditions limit number of San Jose scale and pathogenic fungi - boveria and coniotirium, and gypsy moth - limits the European ground beetle odor-ous and the Crimean carabid, quite often destroying laying of eggs up to 80%. Number of the Crimean snoutbeetle is limited with the Crimean carabid. It is found out, that insegar in struggle against the American white butterfly, applied during mass flying of imago of the first generation, promotes almost 100% of death of the pest (99,1%). It is necessary to carry out struggle in two periods with San Jose scale - dormant period (application of specimen 30В, solution, 40 kg/ga or ДНОК, 40% so-lution, 15 kg/ga) and during vegetation against the first and second generations of "zoospores" (application of mospilan, 20% solution, 0.5 kg/ga). Application of bio-toxybacillin against worms of younger age of the American white butterfly provides their death up to 98-99 %, and various species of leaf rollers from 68 up to 79%. It is established by researches, that biotoxybacillin has aftermath. In forest areas num-ber of gypsy moth is appreciably limited (up to 90%) by application of ВИРИН-НШ, solution, 100 ml/ga, and in field-protecting forest belts - by dimetrin, solution, 40 kg/ga (98,1 %).