Özet:

Origanum vulgare L., Family (Labiatae), Buxus sempervirens L., Familia (Buxaceae),Sambucus nigra L., Familia (Caprifoliaceae), Aesculus hippocastanum L, Familia (Hippocastanaceae), Hypericum perforatum L., Familia (Compositae), Viscum album L., Familia (Loranthaceae), Diospyros kaki L., Familia (Ebenaceae), Ocimum basilicum L., Familia (Labiatae), Alnus glutinosa Goertn, Familia (Betulaceae) and Achilea biebersteinii Willd., Familia (Compositae) have been insecticide and appetite activity from plants. 95% of the plant’s alcohol extracts were tested on Lymantria dispar L. (Lep: Lymantridae) larvaes in skin alteration 2.-3. of the plant, L. The appetite disruptive activities on the larva were assessed by the method of the larva's nutritional behavior. The 48-hour LC50 test success of O. vulgare, S. nigara and B. sempervirens plant extracts on all L. dispar larvas was determined at 60, 60 and 60 percent respectively. The toxicity values other plant extracts showed in the same period were determined as 50%, 40, 40, 50, 20 and 30%. No deaths were identified in control I and control II. Alcohol extracts from B. sempervirens, O. vulgare and A. hippocastanum plants showed high value of appetite disruptive properties on L. dispar larva (34.84; 29.39 and 28.23). Additionally, O. vulgare, B. sempervirens, B. nigra and A. hyppocastanum plant extract, 1 mg. The body weight per larva was found to be lowered to the highest (% -35.61,% -21.01 and% -16.14). The highest nutritional consumption was observed in the plant extract V. album (57.9 mg) and the lowest nutritional consumption in the plant extract B. sempervirens (34.54) . Other plant extract showed similar activity