The capture of male Trichoplusia ni (Hübner) in traps baited with virgin female cabbage loopers or their synthesized pheromone, Cis -7-dodecen-1-ol acetate is greatly reduced when Cis -7-dodecen-1-ol is dispensed simultaneously from the same trap. This alcohol was isolated from a commercial lot of pheromone that had proved to be a poor attractant in field tests.
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Tumlinson et al. (1972) studied this question.
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