Abstract
AbstractIn field trapping tests the addition of 4‐oxoisophorone (2,6,6‐trimethylcyclohex‐2‐ene‐1,4‐dione) to the known ternary bisexual lure (consisting of phenylacetaldehyde + benzyl acetate + eugenol) significantly increased catches of the silver Y moth Autographa gamma, an important migratory noctuid pest. Both female and male moths were attracted, supposedly in the natural sex ratio of the local population. Traps baited with the quaternary lure caught 27.9% of the number of moths in traps baited with synthetic sex pheromone (all males), and the two types of lures showed similar seasonal trends when following the quantitative changes in moth flight throughout the whole season. This suggests that the improved quaternary bisexual lure could be efficient enough to yield a new tool for detection and monitoring of A. gamma, resulting in more reliable plant protection decisions based on female catches, and can provide data for studies where the catch of females and data on sex ratio are indispensable.
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