Skip to main content
SLU publication database (SLUpub)

Research article2019Peer reviewedOpen access

Addition of terpenoids to pear ester plus acetic acid increases catches of codling moth (Lepidoptera: Tortricidae)

Knight, Alan L.; Mujica, Valentina; Herrera, Sebastian Larsson; Tasin, Marco

Abstract

Field studies were conducted to evaluate new kairomone blends in combination with pear ester (E,Z)-2,4-ethyl decadienoate (PE) and acetic acid (AA) for their attraction of male and female codling moth, Cydia pomonella (L.), in apple, Malus domestica Borkhausen. The addition of decanal to either AA or PE alone significantly increased total and female moth catches. However, the addition of decanal did not improve the attraction of PE + AA. The addition of either the pyranoid (PyrLOX) or furanoid (FurLOX) linalool oxide but not linalool (LOL) increased moth catches with PE but did not increase catches with PE + AA. Similarly, the addition of PyrLOX plus decanal did not improve PE + AA. The addition of (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) to either AA, PE + AA or PE + AA+decanal did not significantly increase moth catches. However, the addition of PyrLOX to traps with PE + AA and DMNT (4-component lure) significantly increased moth catches compared with PE + AA alone or any of the ternary blends of these volatiles. Females accounted for 60%-80% of the total catch with this 4-component lure. The 4-component blend with PyrLOX was a more attractive lure than similar blends that substituted LOL, or a binary blend of LOL and FurLOX for PyrLOX. The 4-component blend caught nearly fourfold more total and female moths than the purported attractant N-butyl sulphide when it was used in combination with PE + AA. These results indicate that significant improvements in monitoring, mating disruption and mass trapping of codling moth are possible. Further studies are needed to assess the new attractive blend's effectiveness in combination with sex pheromone lures and to evaluate whether other host plant volatiles can be added or substitute for DMNT or LOX when used in combination with PE + AA.

Keywords

(E)-4; 8-dimethyl-1; 3; 7-nonatriene; (E; Z)-2; 4-ethyl decadienoate; acetic acid; Cydia pomonella (L; ); integrated pest management; linalool oxide

Published in

Journal of Applied Entomology
2019, Volume: 143, number: 8, pages: 813-821
Publisher: WILEY

      SLU Authors

      • Associated SLU-program

      SLU Plant Protection Network

      UKÄ Subject classification

      Agricultural Science
      Zoology

      Publication identifier

      DOI: https://doi.org/10.1111/jen.12646

      Permanent link to this page (URI)

      https://res.slu.se/id/publ/101519