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peer-reviewed research article

Mass releases of Trichogramma wasps can reduce damage from codling moth

authors

Nick Mills, UC Berkeley
Carolyn Pickel, Associate Entomologist
Sarah Mansfield, Division of Insect Biology, UC Berkeley
Sandra McDougall, Division of Insect Biology, UC Berkeley
Rick Buchner, UCCE Tehama
Janet Caprile, Contra Costa, Colusa, Lake, Sutter-Yuba
John Edstrom, Contra Costa, Colusa, Lake, Sutter-Yuba
Rachel B. Elkins, Contra Costa, Colusa, Lake, Sutter-Yuba
Janine K. Hasey, Contra Costa, Colusa, Lake, Sutter-Yuba
Kathy Kelley, Contra Costa, Colusa, Lake, Sutter-Yuba
Bill Krueger, UCCE Tehama
Bill Olson, UCCE Tehama
Russ Stocker, ARENA Pest Management, Davis

publication information

California Agriculture 54(6):22-25. DOI: 10.3733/ca.v054n06p22. November-December 2000.

abstract

Mass releases of commercially produced Trichogramma wasps can be used to reduce damage from codling moth by 60% in walnut and pome fruit orchards in California. Results from field trials indicate that release rate and evenness of distribution are important factors influencing the effectiveness of wasp releases, and that damage reduction is more effective in walnuts and pears than in apples. Because the environmental risks of large-scale releases of Trichogramma wasps are likely to be small, wasp releases could be integrated with pheromone-based mating disruption for effective management of codling moth.

author affiliations

N. Mills is Associate Professor and Associate Entomologist, UC Berkeley; N. Mills is Associate Professor and Associate Entomologist; S. Mansfield is Graduate Student; S. McDougall is former Graduate Student, Division of Insect Biology, UC Berkeley; R. Buchner, is County Directors and Farm Advisors, UCCE Tehama, Glenn and Butte counties, respectively; J. Caprile, is UCCE Farm Advisors, Contra Costa, Colusa, Lake, Sutter-Yuba and Stanislaus counties, respectively; J. Edstrom, is UCCE Farm Advisors, Contra Costa, Colusa, Lake, Sutter-Yuba and Stanislaus counties, respectively; R. Elkins, is UCCE Farm Advisors, Contra Costa, Colusa, Lake, Sutter-Yuba and Stanislaus counties, respectively; J. Hasey is UCCE Farm Advisors, Contra Costa, Colusa, Lake, Sutter-Yuba and Stanislaus counties, respectively; K. Kelley is UCCE Farm Advisors, Contra Costa, Colusa, Lake, Sutter-Yuba and Stanislaus counties, respectively; B. Krueger is County Directors and Farm Advisors, UCCE Tehama, Glenn and Butte counties, respectively; B. Olson is County Directors and Farm Advisors, UCCE Tehama, Glenn and Butte counties, respectively; R. Stocker is Pest Control Operator, ARENA Pest Management, Davis.

References

Gut LJ, Brunner JF. Pheromone-based management of codling moth (Lepidoptera: Tortricidae) in Washington apple orchards. J Agric Entomol. 1998. 15:405.

McDougall SJ, Mills NJ. The influence of hosts, temperature and food sources on the longevity of Trichogramma platneri.. Entomol Exp Appl 1997a. 83:pp.195-203.

McDougall SJ, Mills NJ. Dispersal of Trichogramma platneri Nagarkatti (Hym., Trichogrammatidae) from point-source releases in an apple orchard in California. J Appl Entomol 1997b. 121:pp.205-9.

[NASS] National Agricultural Statistics Service. California agricultural statistics 1998, fruits and nuts. 2000. Version 24. www.nass.usda.gov/ca/bul/agstat/ov-tb-07.htm .

[UC IPM] Statewide Integrated Pest Management Project. Integrated Pest Management for Walnuts.. UC DANR Pub. 3270 1993. Oakland, CA:

UC IPM. Integrated Pest Management for Apples and Pears.. UC DANR Pub. 3340 1999. Oakland, CA.: