FIELD: agriculture.
SUBSTANCE: can be used for increase of biological efficiency of insecticidal preparations on basis of entomopathogenic microorganisms. Efficiency upgrading of insecticidal preparations is reached by use of usnic acids as synergist of such insecticides. It is shown increase in percent of beer small copper caterpillars, potato bug larvas and gypsy moth caterpillars demise at usnic acid mix and entomopathogenic microorganisms use, such as fungi Metarhizium anisopliae and Beauveria bassiana (conidium), bacterium Bacillus turhingiensis (spore-crystalline mass), Baculoviridae virus nuclear polyhedrosis.
EFFECT: efficiency upgrading of insecticidal preparations.
1 cl, 3 ex, 3 tbl
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