Some may think Navel Orangeworm is just a pest of almonds and pistachios, but there are other crops it thrives off of as well. Watch this brief interview with Bob Klein from the California Pistachio Research Board as he shares his insights on preferred overwintering hosts for this pest as well as in-season comparisons. It’s going to take a unified approach across industries to defeat this pest.
Winter sanitation, mating disruption and proper pesticide application — all critical strategies in managing the number one pest of tree nuts: Navel Orangeworm. No one wants this pest on their farms, but are growers really doing their due diligence in managing this pest with tools that are now widely available to the industry? Watch this interview with Bob Klein from the California Pistachio Research Board as he shares the rough statistics and read about how you can do better in Pacific Nut Producer Magazine.
So how bad can Navel Orangeworm damage get in our tree nut orchards? Hopefully we won’t have to find out this season, as growers are equipped with more tools and practices to control the pest. Watch this brief interview with Research Entomologist Joel Siegel as he shares some evolving trends in pest pressure across the state, and read more about it in Pacific Nut Producer Magazine.
California tree nut growers received a ‘holiday gift’ from the Federal Government last week — to the sum of $6 Million in appropriation funds to combat the formidable pest of the tree nut industry, Navel Orangeworm. Watch this brief video with the Executive Director of American Pistachio Growers Richard Matoian for more details.
Please thank our sponsor Duarte Nursery for their industry support with an email of gratitude this holiday season.
What kinds of damage/losses did California pistachio growers incur this year? How was Navel Orangeworm, the industry’s most formidable pest? How about the international trade war? Can pistachios growers still get trade mitigation funding? Watch this brief video with American Pistachio Growers’ Executive Director Richard Matoian and read more about in Pacific Nut Producer Magazine.
Please thank our sponsor Duarte Nursery for their industry support and see them at their booth at the California Almond Conference in Sacramento, December 10-12.
One of the main concerns with recent almond acreage trends is in the exponential growth of earlier harvesting varieties and how the how that will impact early stockpiling at hulling and processing facilities. Growers obviously want to harvest their crops as soon as possible, but Navel Orangeworm damage doesn’t stop as soon as the nuts leave the orchard. Watch this brief video with Martin Pohl from Hughson Nut as he explains the situation and need for the almond industry to evolve with the trends. Read more about it in Pacific Nut Producer Magazine.
The Almond Board of California recently approved funding of $1 million dollars of a Navel Orangeworm Sterile Insect Technique research project. This is the single largest production research project ever funded by the Almond Board.
The Almond Board of California (ABC) has been funding Navel Orangeworm (NOW) research for over twenty years and has made great progress in determining various production practices growers can implement for NOW control, including mating disruption and winter sanitation. While these practices have proven effective, this pest problem is still growing in some regions. Through the funding of this project the Almond Board is ramping up efforts in finding solutions by exploring all possible options for NOW control and providing growers with additional tools to combat this pest. 
“We’ve been funding Navel Orangeworm research since 1973 – that’s nearly half a century of scientific findings focused on one pest and its impacts,” said Richard Waycott, Almond Board of California President and CEO. “Putting $1 million of growers’ dollars towards Navel Orangeworm research demonstrates our seriousness in combating this pest. We want to explore all available options to find effective controls for NOW.”
The concept around the sterile insect technique (SIT) is simple: Researchers use radiation to sterilize male insects and then release them into the orchard when the first generation of mating occurs. While the physical aspect of mating still takes place, the female is not fertilized, resulting in an unproductive mating process and, overtime, reducing the NOW population.
However, using SIT to reduce the NOW population in almonds alone would only bring short-term success; controlling NOW requires solutions that work beyond almonds. Even if NOW damage is reduced on an annual basis in almonds, the pest will still be flying to other crops, such as pistachios and walnuts, and replenishing its population there. Therefore, the Almond Board’s big-picture approach to NOW control involves a collaborative effort with other nut industries. By working together, each industry will be able to establish new options for pest management that can be applied across the various crops.
“Together, the California almond industry and other crops will test the viability of the sterile insect technique to determine how this control method will work across the various commodities,” said Josette Lewis, director of Agricultural Affairs at the Almond Board.
Federal funds may also be available to support SIT research and the facilities where the sterile insects will be raised prior to being released and tested in almond and pistachio orchards. Almonds growers and other industry members who want to learn about the process to obtain federal funding for this project can contact Elaine Trevino (etrevino@almondalliance.org) at the Almond Alliance for more information.
“The Almond Board has spent decades researching NOW to better understand how growers can combat this pest and better protect their crop, and through that research we’ve had great findings,” said Lewis. “Still, there’s more work to be done and the Almond Board looks forward to partnering with researchers, the almond industry and the broader ag community in exploring this sterile insect opportunity for NOW control.”
Those interested to learn more about the SIT project, as well as the almond industry’s research in NOW and its effects, should attend the Almond Board of California’s NOW Summit on June 18 at the Modesto Junior College Agricultural Pavilion. During this event nut growers, PCAs and others involved in California agriculture can gather to learn more about ABC’s current NOW research, what problems remain and what potential solutions lie on the horizon. Speakers and the agenda are still being finalized, but one of the items that will be discussed is the NOW SIT project. Visit Almonds.com/Events for more information about the summit.
California Almonds make life better by what we grow and how we grow. The Almond Board of California promotes natural, wholesome and quality almonds through leadership in strategic market development, innovative research, and accelerated adoption of industry best practices on behalf of the more than 6,800 almond farmers and processors in California, most of whom are multi-generational family operations. Established in 1950 and based in Modesto, California, the Almond Board of California is a non-profit organization that administers a grower-enacted Federal Marketing Order under the supervision of the United States Department of Agriculture. For more information on the Almond Board of California or almonds, visit Almonds.com or check out California Almonds on Facebook, Twitter, Pinterest, Instagram and the California Almonds blog.
Malcolm Media’s Tree & Vine Expo was once again a big hit for growers & crop consultants looking to get a better grip on pest management in their orchards. One of the seminars featured UC IPM Advisor Jhalendra Rijal who shared how to more effectively incorporate mating disruption in their navel orangeworm control programs. Watch his brief interview and read more about it in Pacific Nut Producer Magazine. Don’t currently receive the magazine? Subscribe for free at: https://malcolmmedia.com/pacific-nut-producer-magazine-subscriptions/.
Pistachio growers just enjoyed gathering for the annual American Pistachio Growers Conference last week. Watch this conference wrap-up interview with APG Executive Director Richard Matoian as he shares the current State of the Pistachio Industry, both the successes, and some concerns for the industry moving forward. Read more about it in the coming issue of Pacific Nut Producer Magazine.
Navel Orangeworm (NOW) continues to be a growing pest for almond, pistachio & walnut growers all over California. Last year was an especially difficult year, as there were growers that experienced significant crop loss who have historically not had issues with the pest before. Bob Klein with the Pistachio Research Board recently reported on a field trial they will be conducting utilizing sterile insect technology to minimize NOW populations in the orchard. Watch this video and read more about it in Pacific Nut Producer Magazine.