Capitol Corridor
University of California
Capitol Corridor

Posts Tagged: moth

New $1 million research project to test mating disruption for pest control in walnuts

The Community Alliance with Family Farmers and UC Cooperative Extension are working with farmers to establish six demonstration sites in walnut orchards that will examine the effectiveness of mating disruption to control two major pests of the crop – codling moth and navel orangeworm.

The three-year research effort is funded with a $1 million award from the California Department of Agriculture Biologically Integrated Farming Systems program.

“The project sites will be in the Sacramento and northern San Joaquin Valleys, but we expect the demonstration to be of interest to walnut farmers across the state,” said Sara Tiffany, CAFF director of ecological farming and the project lead. “Farmers who grow related crops, like almonds and pistachios, will also be able to benefit from the findings.”

Coddling moth larva in developing walnut.
Over the past 55 years, conventional walnut farmers have often turned to the broad-spectrum pesticide chlorpyrifos – commonly known by the trade name Lorsban – to protect the crop from codling moths and navel orangeworm. However, California regulators have determined it may no longer be used in the state as of Dec. 31, 2020.

“Farmers need alternatives. In this project, we will be studying the effectiveness of alternatives that already exist,” said Jhalendra Rijal, UC Cooperative Extension integrated pest management advisor for San Joaquin, Stanislaus and Merced counties, the lead scientist on the project. The California Walnut Board is also part of the project team.

Six farmers will be recruited to enroll at least 80 acres each in the demonstrations – three farmers in the Sacramento Valley and three in the northern San Joaquin Valley. The entire acreage will be managed following UC IPM guidelines for walnut production, including cover crops, reduced risk pesticide options and biological control.

Forty acres will be treated with commercially available mating disruption products, while the other 40 acres will not. The treatment works by confusing the pests. Codling moth and navel orangeworm moths naturally release pheromones that help them find mates. The female lays eggs in the immature nuts, and when they hatch, the larvae feed on the nuts, rendering them unmarketable. In the treated area, the orchards will be flooded with a synthetic pheromone that makes it much more difficult for male and female pests to hone in on one another.

Besides codling moth and navel orangeworm, the project will systematically look at the effects of cover crops and predatory mite release on pest mite populations, and improvement in other natural enemy populations in walnut orchards.

The results of the IPM practices will be shared widely with growers, pest control advisors and certified crop consultants in articles, meetings and field days.

“Currently the use of mating disruption in walnuts is significantly lower than in almonds,” said Rijal, who is also the associate director for Agricultural IPM with the UC Statewide IPM Program. “We believe when farmers see the results of using mating disruption, along with other sustainable walnut production practices, we will improve the adoption rate.”

Posted on Thursday, September 3, 2020 at 9:14 AM
Focus Area Tags: Agriculture

Countdown Until Bohart Museum of Entomology's Virtual Moth Open House

Entomologist Jeff Smith, curator of the Bohart Museum of Entomology's Lepidoptera collection, discusses how to pin and spread specimens. (Photo by Kathy Keatley Garvey)

One...two...three... Are you counting down until the much-awaited Virtual Moth Open House, hosted by the UC Davis Bohart Museum of...

Entomologist Jeff Smith, curator of the Bohart Museum of Entomology's Lepidoptera collection, discusses how to pin and spread specimens. (Photo by Kathy Keatley Garvey)
Entomologist Jeff Smith, curator of the Bohart Museum of Entomology's Lepidoptera collection, discusses how to pin and spread specimens. (Photo by Kathy Keatley Garvey)

Entomologist Jeff Smith, curator of the Bohart Museum of Entomology's Lepidoptera collection, discusses how to pin and spread specimens. (Photo by Kathy Keatley Garvey)

Preparing monarch specimens for viewing in the Bohart Museum of Entomology. (Photo by Kathy Keatley Garvey)
Preparing monarch specimens for viewing in the Bohart Museum of Entomology. (Photo by Kathy Keatley Garvey)

Preparing monarch specimens for viewing in the Bohart Museum of Entomology. (Photo by Kathy Keatley Garvey)

Posted on Friday, July 24, 2020 at 4:56 PM
Focus Area Tags: Environment, Innovation, Natural Resources

Bohart Open House: Like a Moth to a Flame!

This is the Atlas moth, the largest moth in the world. (Photo by Kathy Keatley Garvey)

Want to learn more about moths? If you attend the Virtual Moth Open House hosted by the Bohart Museum of Entomology at UC Davis, then it may be...

This is the Atlas moth, the largest moth in the world. (Photo by Kathy Keatley Garvey)
This is the Atlas moth, the largest moth in the world. (Photo by Kathy Keatley Garvey)

This is the Atlas moth, the largest moth in the world. (Photo by Kathy Keatley Garvey)

Like to learn how to blacklight for insects? Entomologists at the Virtual Moth Night Open House, hosted by the Bohart Museum of Entomology, will tell you how. At right is John De Benedictus. (Photo by Kathy Keatley Garvey)
Like to learn how to blacklight for insects? Entomologists at the Virtual Moth Night Open House, hosted by the Bohart Museum of Entomology, will tell you how. At right is John De Benedictus. (Photo by Kathy Keatley Garvey)

Like to learn how to blacklight for insects? Entomologists at the Virtual Moth Night Open House, hosted by the Bohart Museum of Entomology, will tell you how. At right is John De Benedictus. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, July 21, 2020 at 2:00 PM
Focus Area Tags: Economic Development, Environment, Innovation, Natural Resources, Yard & Garden

Ready for the Virtual Moth Open House at the Bohart Museum of Entomology?

You will learn about amazing moths at the Bohart Museum of Entomology's Virtual Moth Open House from 1 to 2 p.m., Saturday, July 25. (Photo by Kathy Keatley Garvey)

There will be no hot chocolate.   There will be no cookies.   But not to worry--there will be moths! And lots of them!   It's...

You will learn about amazing moths at the Bohart Museum of Entomology's Virtual Moth Open House from 1 to 2 p.m., Saturday, July 25. (Photo by Kathy Keatley Garvey)
You will learn about amazing moths at the Bohart Museum of Entomology's Virtual Moth Open House from 1 to 2 p.m., Saturday, July 25. (Photo by Kathy Keatley Garvey)

You will learn about amazing moths at the Bohart Museum of Entomology's Virtual Moth Open House from 1 to 2 p.m., Saturday, July 25. (Photo by Kathy Keatley Garvey)

At previous Moth Nights,
At previous Moth Nights, "Moth Man" John DeBenedictis of Davis helped coordinate the blacklighting display at the Bohart Museum of Entomology. Here he chats with visitors. Blacklighting will be one of the topics at the Bohart Museum's Virtual Moth Open House on July 25. (Photo by Kathy Keatley Garvey)

At previous Moth Nights, "Moth Man" John DeBenedictis of Davis helped coordinate the blacklighting display at the Bohart Museum of Entomology. Here he chats with visitors. Blacklighting will be one of the topics at the Bohart Museum's Virtual Moth Open House on July 25. (Photo by Kathy Keatley Garvey)

Entomologist Jeff Smith curates the Lepidoptera collection at the Bohart Museum of Entomology and will be featured at its Virtual Moth Open House on July 25. (Photo by Kathy Keatley Garvey)
Entomologist Jeff Smith curates the Lepidoptera collection at the Bohart Museum of Entomology and will be featured at its Virtual Moth Open House on July 25. (Photo by Kathy Keatley Garvey)

Entomologist Jeff Smith curates the Lepidoptera collection at the Bohart Museum of Entomology and will be featured at its Virtual Moth Open House on July 25. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, July 7, 2020 at 5:26 PM
Focus Area Tags: Environment, Family, Innovation, Natural Resources

Ever Seen a Plume Moth?

A pterophorid plume moth (family Pterophoridae) in Vacaville, Calif. on April 2, 2020. (Photo by Kathy Keatley Garvey)

Have you ever seen a plume moth? Or has a plume moth ever seen you? We spotted a pterophorid plume moth (family Pterophoridae) yesterday on our...

A pterophorid plume moth (family Pterophoridae) in Vacaville, Calif. on April 2, 2020. (Photo by Kathy Keatley Garvey)
A pterophorid plume moth (family Pterophoridae) in Vacaville, Calif. on April 2, 2020. (Photo by Kathy Keatley Garvey)

A pterophorid plume moth (family Pterophoridae) in Vacaville, Calif. on April 2, 2020. (Photo by Kathy Keatley Garvey)

Posted on Friday, April 3, 2020 at 3:07 PM
Focus Area Tags: Agriculture, Economic Development, Environment, Natural Resources, Pest Management, Yard & Garden
 
E-mail
 
Webmaster Email: kmchurchill@ucanr.edu