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РЕЗЮМЕ
Исследована чувствительность у имаrо паразита Encarsia formosa Gahan, к прегаратап актелик 50 ЕК, тhодан 35 ЕК, ланат. 20 Л и перметрин 25 ЕК. Установлена разница в реакции отдепьных популяций паразита к тим препаратам. И при саwых устойчивых популяциях ЛК 50 в 100 - 250 раз ниже, чем обычно применяемые концентрации.
SUMMARY
The imago sensitivity of Encarsia formosa Gah. towards some insecticides as actelic 50 EC, tiodan 35 EC, lanat 20L and permetrin 25 EC has been investigated. In the individual populations some differences of the parasite reactions to the above mentioned preparations have been established. In the most resistant populations LC50 is from 100 to 250 times lower than the usually applied concentrations against pests.