Pest Management

Valley oak tree atop a hill of brown grass.
Event

Webinar: Mediterranean Oak Borer & Other Pests of California Oaks

Apr 10 2025

The Mediterranean Oak Borer (MOB) is an invasive ambrosia beetle that infests several species of white oaks in California: valley oak, blue oak, and Oregon oak. The beetle is spreading rapidly in Napa, Lake, Sonoma, and Sacramento Counties and has been detected in neighboring El Dorado, Yolo, and Mendocino…
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Horn Worm on a tomato plant
Event

Integrated Pest Management (IPM)

Apr 8 2025

Integrated Pest Management--Managing pest with environmentally sound methods, and answers to your "bugly" problems.   Come and hear about multiple techniques for effective pest control that are the least toxic.  Discover methods to keep bad pests away and encourage beneficial insects, all…
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Article

2025 First Report-- April 2

April 2nd, 2025
By Patricia A Lazicki
General situation, thrips population developmentPlanting is in full swing. Temperatures and precipitation this spring are close to historic norms, and the thrips population predictions are very similar to those we saw last year. We’re currently at the peak of 1st-generation adults; they’ll be laying their…
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Photo Forest and Lake by Katie Musial on Unsplash
Article

2 RFPs - Vertebrate Pest Control Research and Forest Monitoring

March 27th, 2025
By Kendra T Rose
Dear Colleagues,1) California Department of Food and Agriculture’s (CDFA) Integrated Pest Control Branch is now accepting applications for the Vertebrate Pest Control Research Program (VPCRP). This funding opportunity is designed to support innovative research and education projects aimed at…
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Armillaria
Documents

Armillaria

 Armillaria root rot, also known as Oak root fungus, is a disease of many different plants.  There is no known effective cure.  Root rot fungus disease of trees and woody plants. Affects palms, succulents, ferns and other herbaceous plants like begonia, daffodil, dahlia, and geranium.  No…
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Damping Off
Documents

Damping Off

Seedlings sometimes fail to sprout or die soon after. Seeds may rot before germinating, shoots may decay before they emerge, or stems of seedlings may be attacked near the soil line, causing young plants to collapse. These diseases are collectively called “damping off,” likely caused by a number of soil…
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downy mildew
Documents

Downy Mildew

Downy mildews, including Peronospora and Plasmopara spp., are pathogenic water molds (oomycetes) that primarily damage foliage. Hosts include cane berries, roses, various herbaceous ornamentals, and many fruit, grain, and vegetable crops. CategoryFungiSigns/SymptomsDowny mildew causes pale green to…
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Brown, scorched-looking leaves are symptoms of fire blight in trees in the apple and pear family. Photo: Sebastian Stabinger
Documents

Fire Blight

 Fire blight is a common and frequently destructive disease of pome fruit trees and related plants.  The disease can destroy limbs and even entire shrubs or trees. Caused by the bacterium Erwinia amylovora. Pear (Pyrus species) and quince (Cydonia) are extremely susceptible.  Apple, crabapple …
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fusarium wilt
Documents

Fusarium Wilt

Fungus that only infects tomatoes. Like verticillium, causes leaf yellowing and discoloration of water-conducting tissues. Fungi spread in soil water, on equipment, transplants, or tubers. Once inside the root, the fungus grows until it reaches the water-conducting cells, inside which it spreads upward…
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