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Diamondback Moth Control: Lessons from New Zealand Webinar

1 DPR CEU “Other” approved

Presented by Plant and Food Research and Western Growers Science.

Webinar Details:
Wednesday April 30, 2025

2:00 PM to 3:00 PM PT
Online / Zoom

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WG Science

About This Webinar:

Diamondback moth (Plutella xylostella) is the most damaging and problematic pest for brassica growers. Similarly, in New Zealand, DBM can render vegetable brassica crops unmarketable – through damage to leaves or contamination of harvested parts by larvae and pupae. Pesticide resistance, climate change and loss of traditional control options have only escalated the urgency to find more effective solutions to control DBM.

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 IPM as a tool for effective control of DBM in New Zealand fresh produce crops and introduce emerging opportunities and tools that show promise to growers.

Arelne Haffa
Dr. Arlene Haffa
Professor, Department of Biology & Chemistry
CSU Monterey Bay
Dr. Arlene Haffa is a Professor in the Department of Biology & Chemistry at CSU Monterey Bay. She earned her doctorate at Arizona State University where she used laser physics to study electron transfer in photosynthetic bacteria. Her postdoctoral studies were done at the Monterey Bay Aquarium Research Institute (MBARI) in Moss Landing. She taught in the chemistry department at the University of Wisconsin-Oshkosh for four years before joining the faculty at CSU Monterey Bay in 2011.
Cole-Smith-headshot
Cole Smith
Staff Research Associate
University of California, Davis and Agriculture and Natural Resources
Cole is a Staff Research Associate with University of California, Davis and Agriculture and Natural Resources. His primary research area is sustainable nutrient management and soil fertility. His Ph.D. research has focused on the use of organic amendments within vegetable cropping agroecosystems of the California’s central coast, aiming to quantifying tradeoffs between conservation management and nitrogen fertilizer use. Cole holds a master’s degree from UC Davis in Soil Science & Biogeochemistry and has been with the UC system for 8 years implementing extension-based outreach and education programs to divert organic waste from landfills, improve soil health and promote the adoption of sustainable agricultural practices.

Steve Brazeel Headshot
 
Steve Brazeel
CEO 
Elevated Foods

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.


Arelne Haffa
Dr. Arlene Haffa
Professor, Department of Biology & Chemistry
CSU Monterey Bay
Dr. Arlene Haffa is a Professor in the Department of Biology & Chemistry at CSU Monterey Bay. She earned her doctorate at Arizona State University where she used laser physics to study electron transfer in photosynthetic bacteria. Her postdoctoral studies were done at the Monterey Bay Aquarium Research Institute (MBARI) in Moss Landing. She taught in the chemistry department at the University of Wisconsin-Oshkosh for four years before joining the faculty at CSU Monterey Bay in 2011.
Cole-Smith-headshot
Cole Smith
Staff Research Associate
University of California, Davis and Agriculture and Natural Resources
Cole is a Staff Research Associate with University of California, Davis and Agriculture and Natural Resources. His primary research area is sustainable nutrient management and soil fertility. His Ph.D. research has focused on the use of organic amendments within vegetable cropping agroecosystems of the California’s central coast, aiming to quantifying tradeoffs between conservation management and nitrogen fertilizer use. Cole holds a master’s degree from UC Davis in Soil Science & Biogeochemistry and has been with the UC system for 8 years implementing extension-based outreach and education programs to divert organic waste from landfills, improve soil health and promote the adoption of sustainable agricultural practices.

Steve Brazeel Headshot
 
Steve Brazeel
CEO 
Elevated Foods

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.

Agenda:

Arelne Haffa
Dr. Arlene Haffa
Professor, Department of Biology & Chemistry
CSU Monterey Bay
Dr. Arlene Haffa is a Professor in the Department of Biology & Chemistry at CSU Monterey Bay. She earned her doctorate at Arizona State University where she used laser physics to study electron transfer in photosynthetic bacteria. Her postdoctoral studies were done at the Monterey Bay Aquarium Research Institute (MBARI) in Moss Landing. She taught in the chemistry department at the University of Wisconsin-Oshkosh for four years before joining the faculty at CSU Monterey Bay in 2011.
Cole-Smith-headshot
Cole Smith
Staff Research Associate
University of California, Davis and Agriculture and Natural Resources
Cole is a Staff Research Associate with University of California, Davis and Agriculture and Natural Resources. His primary research area is sustainable nutrient management and soil fertility. His Ph.D. research has focused on the use of organic amendments within vegetable cropping agroecosystems of the California’s central coast, aiming to quantifying tradeoffs between conservation management and nitrogen fertilizer use. Cole holds a master’s degree from UC Davis in Soil Science & Biogeochemistry and has been with the UC system for 8 years implementing extension-based outreach and education programs to divert organic waste from landfills, improve soil health and promote the adoption of sustainable agricultural practices.

Steve Brazeel Headshot
 
Steve Brazeel
CEO 
Elevated Foods

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.

Intro to NZ fresh produce scene and a history of DBM management in New Zealand.

New Zealand Researchers have developed an IPM strategy designed to ensure that diamides are not used all year round, in order to preserve the effectiveness of these products for as long as possible. IPM workshops have demonstrated how a marketable crop can be grown using biological controls and reduce insecticide costs. This session will begin with an introduction to the New Zealand fresh produce scene, brief history of DBM management and the use of IPM as a tool to control DBM.

IPM as a tool to control DBM, examples from New Zealand fresh produce growers.

The IPM case study is presented by A Lighter Touch, Key Industries and Vegetables New Zealand. A Lighter Touch is an industry and government partnership programme which aims to support New Zealand plant-based food producers to move from agrichemical reliance to an agroecological approach to crop protection – sustainable farming that works with nature. Vegetables New Zealand represents the interests of growers of fresh vegetable crops.

Research opportunities for insect viruses, hurdles to registration, current approach, future control.

Researchers have identified Plutella xylostella granulovirus (PlxyGV), a virus that kills DBM larvae, as a tool to control DBM. PlxyGV is highly specific to diamondback moth, which makes it an excellent biological control agent for controlling diamondback moths without affecting other organisms. Frank Visser of Key Industries says, “the new viral insecticide for diamondback moth we are working on now, has a similar active ingredient, and results in no residue, there is no withholding period so it can be applied right up to harvest and can be held in a cool store, so very stable.”


Arelne Haffa
Dr. Arlene Haffa
Professor, Department of Biology & Chemistry
CSU Monterey Bay
Dr. Arlene Haffa is a Professor in the Department of Biology & Chemistry at CSU Monterey Bay. She earned her doctorate at Arizona State University where she used laser physics to study electron transfer in photosynthetic bacteria. Her postdoctoral studies were done at the Monterey Bay Aquarium Research Institute (MBARI) in Moss Landing. She taught in the chemistry department at the University of Wisconsin-Oshkosh for four years before joining the faculty at CSU Monterey Bay in 2011.
Cole-Smith-headshot
Cole Smith
Staff Research Associate
University of California, Davis and Agriculture and Natural Resources
Cole is a Staff Research Associate with University of California, Davis and Agriculture and Natural Resources. His primary research area is sustainable nutrient management and soil fertility. His Ph.D. research has focused on the use of organic amendments within vegetable cropping agroecosystems of the California’s central coast, aiming to quantifying tradeoffs between conservation management and nitrogen fertilizer use. Cole holds a master’s degree from UC Davis in Soil Science & Biogeochemistry and has been with the UC system for 8 years implementing extension-based outreach and education programs to divert organic waste from landfills, improve soil health and promote the adoption of sustainable agricultural practices.

Steve Brazeel Headshot
 
Steve Brazeel
CEO 
Elevated Foods

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. Stuart Davis
 
Dr. Stuart Davis 
Sustainability Manager 
LeaderBrand

Dr. Stuart Davis is the Sustainability Manager at LeaderBrand, is an Honorary Fellow of the NZIAHS and Chair of the New Zealand Horticultural Science Advancement Trust and Industry Stakeholder Advisory Group Chair for A Lighter Touch, a pan-sector programme which addresses the question of meeting consumer demands for safe plant-based foods produced under sustainable pest management programmes while also caring for the environment. Stuart was formerly Director of Vegetables NZ and Chair of the Vegetable Research and Innovation Board and has had many leading roles in many industry projects especially in integrated pest and disease management.

Chris Lambert
 
Chris Lambert 
Vegetables Technical Specialist
PGG

Chris Lambert is the vegetables technical specialist at PGG. Originally from Gloucestershire in the UK, Chris completed a Bachelor of Science in Marine and Freshwater Biology and then a Master of Science in IPM. He provides technical support and training for staff and clients, particularly around vegetable crop protection. As part of his role, Chris enjoys working with growers and the wider industry, looking for solutions to pest, disease and soil health issues.

Asha Chhagan
 
Asha Chhagan
Scientist in the Biological Control Team
Plant & Food Research

Asha Chhagan is a Scientist in the Biological Control Team at Plant & Food Research, Auckland. She has worked in integrated pest management, biological control and biosecurity for over 20 years. Asha has entomology expertise across a number of tree, vine and vegetable crops including kiwifruit, apples, citrus, feijoas, macadamias, onions and brassicas and is particularly interested in biological control and finding sustainable invertebrate pest management solutions for growers. Asha graduated from the University of Auckland with a BSc majoring in Biological Sciences, followed by an MSc focusing on Biological Control.

Miriam Hall
 
Miriam Hall
Business and Programme Manager
Plant & Food Research

Miriam Hall is the Business Manager and Programme Manager at Plant and Food Research. She has a MSc in Plant Physiology from the University of Auckland and her background is in postharvest research, specializing in fruit texture and ripening.

Arelne Haffa
Dr. Arlene Haffa
Professor, Department of Biology & Chemistry
CSU Monterey Bay
Dr. Arlene Haffa is a Professor in the Department of Biology & Chemistry at CSU Monterey Bay. She earned her doctorate at Arizona State University where she used laser physics to study electron transfer in photosynthetic bacteria. Her postdoctoral studies were done at the Monterey Bay Aquarium Research Institute (MBARI) in Moss Landing. She taught in the chemistry department at the University of Wisconsin-Oshkosh for four years before joining the faculty at CSU Monterey Bay in 2011.
Cole-Smith-headshot
Cole Smith
Staff Research Associate
University of California, Davis and Agriculture and Natural Resources
Cole is a Staff Research Associate with University of California, Davis and Agriculture and Natural Resources. His primary research area is sustainable nutrient management and soil fertility. His Ph.D. research has focused on the use of organic amendments within vegetable cropping agroecosystems of the California’s central coast, aiming to quantifying tradeoffs between conservation management and nitrogen fertilizer use. Cole holds a master’s degree from UC Davis in Soil Science & Biogeochemistry and has been with the UC system for 8 years implementing extension-based outreach and education programs to divert organic waste from landfills, improve soil health and promote the adoption of sustainable agricultural practices.

Steve Brazeel Headshot
 
Steve Brazeel
CEO 
Elevated Foods

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.

agtech-karen-ross
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

Copyright © 2025, Western Growers

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Jason_Resnick 2
 
Jason Resnick
Senior Vice President and General Counsel
Western Growers

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.