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Joint exfosure to Popillia japonica Newman of phenethyl propionate + eugenol + geraniol, 3:7:3, (PEG) and a synthetic female sex attractant (Japonilure) resulted in a lure of outstanding attractancy. This combination was more than 3.6 times as attractive as the current standard survey lure, phenethy1 propionate + eugenol, 3:7, (PE) and 1.34 times as attractive as PE + Japonilure PE + Japonilure however was 2.2 and 2.5 times more attractive, respectively, than either PEG or PE.
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Ladd et al. (1981) studied this question.
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