
Diamondback Moth: Lessons from History and Future Solutions
Effective DBM Control Series Part 1.
Presented by the Grimm Family Organic Center and Western Growers Science.
1 DPR CEU “Other” credit
1 CCA CEU “Integrated Pest Management” credit
Webinar Details:
Thursday, March 27, 2025
11:00 AM to 12:30 PM PT
Online / Zoom





About This Webinar
Join us for a discussion about Diamondback Moth (DBM), a significant pest of brassica, and what future options show promise for control of this species. In this webinar, we will explore the history of control options development for Codling Moth, a major pest of apples, assess lessons that can be applied to DBM in cole crops, and introduce novel practices and tools that show promise to growers.
Dr. Matt Grieshop, Director of the Grimm Family Center for Organic Production and Research and entomologist, will present on using Codling Moth control development as a model for DBM control, identifying the barriers and challenges with these species and the role of biological programs to address these pests.
Dr. Ian Grettenberger, Assistant Specialist in CE Entomology at the University of California Davis and entomologist, will present on novel solutions to address DBM and the latest research on biocontrol, farming practices and pest control product development.



In 2000, Steve Brazeel founded SunTerra Produce, which has grown from a one-person produce brokerage firm into an industry-leading, full-service platform handling sales, marketing, farming, food safety, harvesting, storage, and distribution activities for specialty crop producers on over 10,000 acres throughout the US and Mexico. Born out of SunTerra‘s participation in the USDA’s ground-breaking Farmers to Families Food Box program, Project FoodBox was launched in 2020. Since the program’s inception, the SunTerra/Project FoodBox teams have delivered over 85 Million pounds of fresh fruits and vegetables to communities in need through its network of food banks, community organizations, and health care plans.
Elevated Foods, founded by Mr. Brazeel in 2020, was recently awarded a $20M grant as part of USDA’s Partnerships for Climate Smart Commodities program. Elevated was formed to bring more profit to farmers by incentivizing the adoption of new technologies & practices and providing technical support to help make them more efficient and resilient.
What is a Codling Moth?
Codling moth (Cydia pomonella), is a major pest for apple orchards, causing sting and deep entry fruit damage. Over the past few decades, significant research and intervention practices have been developed to successfully combat this pest, leveraging the unique biology and life cycle of this Lepidoptera species.
What is a Diamondback Moth?
Diamondback Moth (Plutella xylostella), the single most damaging and problematic pest threatening California’s $1.4B cole crop industry. Serious damage occurs on crowns or growing points of young plants or Brussels sprouts, severely stunting growth. Caterpillars can bore into flower buds or broccoli and cauliflower heads, causing contamination and economic injury. Managing this pest has become increasingly challenging in many areas, and control options are limited due to increasing pesticide resistance and few novel pest control tools becoming available.



In 2000, Steve Brazeel founded SunTerra Produce, which has grown from a one-person produce brokerage firm into an industry-leading, full-service platform handling sales, marketing, farming, food safety, harvesting, storage, and distribution activities for specialty crop producers on over 10,000 acres throughout the US and Mexico. Born out of SunTerra‘s participation in the USDA’s ground-breaking Farmers to Families Food Box program, Project FoodBox was launched in 2020. Since the program’s inception, the SunTerra/Project FoodBox teams have delivered over 85 Million pounds of fresh fruits and vegetables to communities in need through its network of food banks, community organizations, and health care plans.
Elevated Foods, founded by Mr. Brazeel in 2020, was recently awarded a $20M grant as part of USDA’s Partnerships for Climate Smart Commodities program. Elevated was formed to bring more profit to farmers by incentivizing the adoption of new technologies & practices and providing technical support to help make them more efficient and resilient.
Speakers

Dr. Grettenberger is the Assistant Specialist in CE Entomology at the University of California Davis . His fields expertise include field and vegetable crops; integrated pest management; applied insect ecology, and biological control of pests. Ian joined UCCE in 2019, as a field and vegetable crops assistant specialist in the Department of Entomology and Nematology at UC Davis. He earned a Ph.D. in entomology from Penn State University and a BS in biology from Western Washington University and is interested in advancing integrated pest management in field and vegetable crops, plant-insect interactions, and applied insect ecology.

Dr. Matt Grieshop is the founding director of the Grimm Family Center for Organic Production and research at Cal Poly and has worked in the areas of organic and sustainable agriculture for over 20 years. An entomologist by training, he has published numerous papers and extension/trade articles in biological, cultural, behavioral, and chemical pest management. Prior to joining Cal Poly, Grieshop served Michigan State University as the Organic Pest Management Specialist where he taught courses in agroecology, pest management, sustainable agriculture, and environmental science. Matt received his doctorate from Kansas State University, MS from Montana State University, and bachelor’s degree from the University of California, Santa Cruz.



In 2000, Steve Brazeel founded SunTerra Produce, which has grown from a one-person produce brokerage firm into an industry-leading, full-service platform handling sales, marketing, farming, food safety, harvesting, storage, and distribution activities for specialty crop producers on over 10,000 acres throughout the US and Mexico. Born out of SunTerra‘s participation in the USDA’s ground-breaking Farmers to Families Food Box program, Project FoodBox was launched in 2020. Since the program’s inception, the SunTerra/Project FoodBox teams have delivered over 85 Million pounds of fresh fruits and vegetables to communities in need through its network of food banks, community organizations, and health care plans.
Elevated Foods, founded by Mr. Brazeel in 2020, was recently awarded a $20M grant as part of USDA’s Partnerships for Climate Smart Commodities program. Elevated was formed to bring more profit to farmers by incentivizing the adoption of new technologies & practices and providing technical support to help make them more efficient and resilient.

Featuring Karen Ross
Secretary of the California Department of Food and Agriculture
KAREN ROSS was appointed Secretary of the California Department of Food and Agriculture on January 9, 2019, by Governor Gavin Newsom.
In re-appointing Secretary Ross, Governor Newsom cited her unmatched leadership experience in agricultural issues nationally, internationally and in California, in areas including environmental stewardship, climate change adaptation and trade.
Secretary Ross was initially appointed by Governor Edmund G. Brown Jr. in 2011.
For more information please contact Jeana Cadby
jcadby@wga.com
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Jason Resnick joined Western Growers in 2003 and now serves as Senior Vice President and General Counsel. His responsibilities include overseeing the organization’s legal department, trade practices department, H-2A Services division, and corporate governance as Western Growers’ corporate secretary. Jason provides advice and counsel on various legal, business and policy matters. Jason has primary staff liaison responsibility over the Western Growers Board of Directors, and the WG Executive and Labor Committees.
Click here for Jason Resnick's full biography.