Golosnyi P. Agrobiological substantiation of control density intra stem pests of spring wheat in the Right-bank Forest-Steppe Zone of Ukraine.

3. In the conditions of the Right-bank Forest-steppe of Ukraine the specific structure of intra stem wreckers in agrocenos wheat summer and winter is specified. 10 types of wreckers which systematically belong to 3 rows and 5 families are revealed. In crops of a spring-sown field by dominating types were: black wheaten fly (Phorbia secures Tien. ) - 36,7%, ordinary grain pililshchik (Cephus pygmaeus L. ) - 23,7% and Swedish flies (Oscinella sp. ) - 21,8%. In crops of winter wheat the ordinary grain pililshchik occupied - 39,1%, and a black wheaten fly - 30,7%. The steadiest against settling by a black wheaten fly there were grades of a spring-sown field - Kharkov 39 and Kharkov 23, to an ordinary grain pililshchik - Mironovsky summer, Collective 3, Mironovchanka and Leguan. The greatest technical efficiency against cereal flies was observed when processing by protravitel by insecticides Kruizer 350 FS since by page (0,5-0,7 l/t) and Promet 400 SC, m.c.s. (2,0 l/t) - 48,1 - 80,4% and 59,6 - 74,6% respectively. Among the preparations passable researches against a black wheaten fly and an ordinary grain pililshchik the greatest efficiency (86,5 and 76,1%) it is noted on Enzhio 247 SC option, c.s. (0,18 l/hа).