Pest Management & Plant Health

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UC Rice Blog: Article

Rats in rice

July 22, 2024
By Sarah Marsh Janish
We have had some interesting calls lately concerning issues we do not usually see in the fields. We have received calls about small circular areas with snipped rice in fields west of I-5.
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Close-up of the larvae of the greater wax moth (Galleria mellonella), pests of honey bee colonies. Also shown is another bee colony pest, a hive beetle. (Photo by Kathy Keatley Garvey)
Bug Squad: Article

Why These Moths Are Unwanted

July 18, 2024
By Kathy Keatley Garvey
As we gather to celebrate moths during National Moth Week (traditionally held the last full week in July and to be observed areawide on Saturday night, July 20 at the Bohart Museum of Entomology at UC Davis), folks single out their favorites and non-favorites. For the beekeepers that's easy.
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A person looking at a bottle of 20% acetic acid vinegar weed killer with a signal word DANGER.
Pests in the Urban Landscape: Article

Can I Use Vinegar to Control Weeds?

July 18, 2024
By Lauren Fordyce
Acetic acid, also known as vinegar, is used in products for weed control. Many people choose it because it is natural. However, acetic acid can damage skin and eyes, especially at concentrations commonly found in weed killers.
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A long, speckled brown insect with a pointed head on a green leaf.
Pests in the Urban Landscape: Article

What are exotic and invasive pests?

July 16, 2024
By Belinda Messenger-Sikes
Exotic and invasive pests threaten California's natural environments, agricultural production, structures, landscapes and gardens. Exotic pests are organisms introduced into an area beyond their natural range and become pests in the new environment.
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A canal of water next to a fenced area with residential homes and trees.
Pests in the Urban Landscape: Article

Urban Pesticides, Fertilizers, and Water Quality

July 14, 2024
By Belinda Messenger-Sikes
Pesticides and fertilizers applied around homes, residential or commercial landscapes, school sites, and other areas can enter our creeks, rivers, and oceans, degrading water quality.
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The OMRI seal may appear on pesticides determined as organically acceptable by the Organic Materials Review Institute.
Pests in the Urban Landscape: Article

Organic, Natural, and Less Toxic: What’s the Difference?

July 11, 2024
By Lauren Fordyce, Belinda Messenger-Sikes, Karey Windbiel-Rojas
You've heard of terms such as green, organic, natural, ecofriendly, and less toxic to describe pest control products and services. But what do these terms really mean? To different people, they can mean different things, creating obvious confusion.
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UC Rice Blog: Article

Pendimethalin Use in California Rice: Clarifications and Updates

July 10, 2024
By Taiyu Guan, Consuelo B Baez Vega
At our last meeting, we had some questions about the approved uses of pendimethalin in California rice. There are several products labeled for use on rice with pendimethalin as the active ingredient. As of June 2024, pendimethalin registered products (on rice) include Prowl H2O, Prowl 3.
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The Savvy Sage: Article

Dragons in the Garden

July 8, 2024
When I first bought my home in central Woodland six years ago, there wasn't much in the yard to interest dragons: a mature orange tree that produced amazingly delicious navel oranges in the winter, a human-planted valley oak on the street out front, and squirrel-planted valley oak too close to my ne...
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It's early morning, and a soldier beetle stirs in a Vacaville garden. A beneficial insect, it eats aphids and other soft-bodied insects. (Photo by Kathy Keatley Garvey)
Bug Squad: Article

Why Soldier Beetles Deserve the Aphid Belt

July 4, 2024
By Kathy Keatley Garvey
It's the Fourth of July and what better time to post images of the aptly name "soldier beetles" than today. These insects (family Cantharidae) resemble the uniforms of the British soldiers of the American Revolution, which is apparently how their name originated.
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