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http://dx.doi.org/10.5656/KSAE.2022.02.0.021

Optimal Composition of Sex Attractant for Monitoring Adults of Spodoptera litura (Lepidoptera: Noctuidae) in Korea  

Jung, Chung Ryul (Forest Medicinal Resources Research Center, National Institute of Forest Science)
Boo, Kyung Saeng (College of Agriculture and Life Sciences, Seoul National University)
Bae, Soondo (Nambu Plant Environment Research)
Han, Kyeung Sik (Department of Smart Gardening, Shingu College)
Publication Information
Korean journal of applied entomology / v.61, no.1, 2022 , pp. 77-83 More about this Journal
Abstract
This study was conducted to determine the optimal composition of sex attractant for monitoring adults of the tobacco cutworm, Spodoptera litura, in Korea. Lures of different compositions from the two sex pheromone components the female, (Z,E)-9,11-tetradecadienyl acetate (Z9E11-14:Ac) and (Z,E)-9,12-tetradecadienyl acetate (Z9E12-14:Ac), were compared for male attraction using synthetic chemicals, rubber septa, and funnel traps in soybean and peanut fields. After sequential tests were conducted using three sets of the two components different ranges from 5:5 to 10:1, from 9:1 to 99:1, and from 9:1 to 39:1, the 19:1 ratio was identified as the most efficient composition. However, S. litura males were barely caught in the trap of the Z9E11-14Ac single component lure. The results show that both the sex attractant compounds are necessary for monitoring adults S. litura males. The higher the pheromone amount in the dispenser in the range from 0.1 to 10 mg, the more males were attracted. Furthermore, the trap height of 1.5 m was optimal for male capture.
Keywords
Spodoptera litura; sex attractant; (Z,E)-9,11-tetradecadienyl acetate; (Z,E)-9,12-tetradecadienyl acetate; composition;
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