Field Trapping of the Diamondback Moth Plutella xylostella Using Synthetic Sex Attractants 12

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Abstract
Mixtures of Z-11-hexadecenal and Z-l1-hexadecenyl acetate used as lures were as attractive to males of Plutella xylostella as 10 virgin females, based on field trapping tests. The best binary lure tested was 100μg 7:3 aldehyde:acetate dispensed from red rubber septa and the optimal trap height was 0.3 m. Virgin females and synthetic lures both attracted Crymodes devastator males in addition to P. xylostella . Several olefins were tested as additives to synthetic lures; attraction of both species was inhibited by Z-9-tetradecenal and by Z-9-tetradecenyl acetate.