Division of Agriculture and Natural Resources

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Male Valley carpenter bee. (Photo by Kathy Keatley Garvey)
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The Teddy Bear Bee

April 21st, 2025
 Bug Squad BlogBy Kathy Keatley GarveyI'm honored and humbled to have one of my images showcased at the annual Insect Salon hosted by the Pacific Branch, Entomological Society of America (PBESA) at its recent meeting in Salt Lake City. It won a second-place award. PBESA covers 11 Western states, plus…
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Gray wolf from the Lassen pack among a herd of cattle in July of 2022
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Study calculates cost to ranchers of an expanding wolf population

April 21st, 2025
By Emily C. Dooley
Tina Saitone, a University of California, Davis, professor and Cooperative Extension specialist in livestock and rangeland economics, sought to quantify the direct and indirect costs after the California Department of Fish and Wildlife launched a pilot program to compensate ranchers for wolf-related losses.
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Stick insect from Bohart Museum of Entomology crawling on arm. (Photo by Kathy Keatley Garvey)
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When Insects Popped Up--And a Lobster Did, Too

April 18th, 2025
Bug Squad BlogBy Kathy Keatley Garvey When the Bohart Museum of Entomology erected its pop-up tent on the Briggs Hall lawn during the recent campuswide UC Davis Picnic Day, insects popped up.They included walking sticks (stick insects) and a few specimens from the Bohart Museum's global collection of…
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The best soil P test for rice: Olsen-P vs Bray-P

April 18th, 2025
By Bruce A Linquist
This year, with high input costs and low rice prices, a lot of growers are testing their soil to determine if they need to apply P and K fertilizer.  I have received a number of calls this week asking about interpreting their soil P test for rice soils. I have recommended using the Olsen-P test (or a…
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Mining bee (Andrena) on Passiflora in Vacaville, Calif. (Photo by Kathy Keatley Garvey)
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In Search of the Mining Bees

April 17th, 2025
 Bug Squad BlogBy Kathy Keatley GarveyThere she was,  a mining bee (genus Andrena) sunning herself on a Passiflora (passionflower vine). She did not notice me.Such a tiny bee, about the size of a grain of rice. It's a solitary ground-nesting bee known as "an early spring bee" and it lives only a…
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Announcing launch of the UC ANR Policy Institute

April 17th, 2025
Vice President Glenda Humiston announces the launch of the new UC ANR Policy Institute. This institute will be transformative in delivering the UC ANR mission by increasing science-based communications and community engagement to inform policy decisions and implementation. The new UC ANR Policy Institute…
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Person working soil with rake in foreground
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Difference Between Soil and Dirt

April 17th, 2025
By Carmen Kappos Inyo-Mono Master Gardener Volunteer While the words soil and dirt are often used interchangeably there are differences between them. Recently, Dustin Blakey, our local UCCE Farm Advisor, gave a talk called “Preparing Garden Soil on the East Side.” During this discussion Dustin…
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What's Growing in the Library?

April 17th, 2025
Blog article by Brenda AltmanOne overlooked feature of John F Kennedy Library in Vallejo is the free garden seed station. It is located on the wall just before the restrooms.  Anyone can take seeds for their own use. Seeds are donated by library patrons and the Seed Barn.  The seeds are separated…
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Flameskimmer dragonfly above bed of California golden poppies. (Photo by Kathy Keatley Garvey)
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Flameskimmers Bring Great Joy

April 16th, 2025
Bug Squad BlogBy Kathy Keatley GarveyFlameskimmers bring great joy.Today we saw our first dragonfly of the season in our Vacaville garden.  The flameskimmer, a female Libellula saturata, perched on a stick and allowed me to take a few images. It was just a couple of weeks ago that I reviewed a book…
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The buds shown on the walnut branches are male flowers called catkins
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UC scientists ask walnut trees: When do you need to be irrigated?

April 16th, 2025
By Trina Kleist
UC scientists are working with growers in Tehama, Butte, Lake, Amador, Contra Costa, Stanislaus and Yolo counties to test a new way of measuring the irrigation needs of walnut trees. Shackel and team think this new method will allow growers to use less water by not irrigating early in the season, and trees…
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Botanical Mementos

April 16th, 2025
Blog article by Karen Metz, UC Master GardenerMany of us have plants in our gardens or yards that remind us of people or places.  Sometimes trees or shrubs are planted to honor the birth of a child, a milestone birthday, or in memory of a loved one.  We might have plants that we have grown from…
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Professor Fiona Goggin of the University of Arkansas
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UC Davis Doctoral Alumna to Give Lecture on 'Plant Defensive Signaling'

April 15th, 2025
 Bug Squad BlogBy Kathy Keatley GarveyUC Davis doctoral alumna Fiona Goggin, professor of entomology and plant pathology at the University of Arkansas, Fayetteville, will return to UC Davis on Monday, April 21 to deliver a lecture hosted by the UC Davis Department of Entomology and Nematology.Professor…
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Come down or Zoom in for this Avocado Seminar on Irrigation
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Avocado Seminar - Water

April 15th, 2025
By Ben A Faber
California Avocado Growers Seminars Series 2025 Our Next SeminarApril 16 (1 -3 PM)  Water Knowledge isPower KnowledgeIn-Person and Zoom Topics and Speakers Sources of ET information and their ReliabilityBy Ali Montazar - UCCE Irrigation Advisor, Imperial/San Diego/ Riverside counties…
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Lupin flowers
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Gardener with Hearts: Growing a Resilient Future

April 15th, 2025
By Kristian M Salgado-Jacobo
 UC Master Gardeners are making a difference by combining their expertise in horticulture with a strong focus on climate readiness in their communities. Through innovative climate literacy and soil education, these dedicated volunteers work together with residents to empower them with the knowledge and…
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Identifying Mechanism to Citrus Greening

April 15th, 2025
By Ben A Faber
Scientists decode citrus greening resistance and develop AI-assisted treatmentPeeChinese Academy of Sciences HeadquartersYE JianInstitute of Microbiologyjianye@im.ac.cn Cell: 86-10-64807363 image: Decode natural resistance against citrus greening disease and Develop AI-designed disease…
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The Joy of Zoo Gardens

April 15th, 2025
Blog by Erin Mahaney, UC Master Gardener As a gardener, one of the charms of visiting zoos is not only seeing the animals, but the zoo plantings as well.  Even now that the children are grown, we have continued our family tradition of visiting a local zoo on the last day of a big trip when everyone…
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What Bt looks like
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Managing Pesticides

April 15th, 2025
Nature’s plan for delaying pest resistance decipheredA new study cracks the code for increasing sustainability of the pest-killing proteins in genetically engineered crops.University of ArizonaElena LopezUniversity of Arizonapelopez@arizona.edu Cell: 5203428712 Farmers in dozens of countries have…
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Butternut squash planted without tillling the soil after cutting down cover crop. Jeanette Alosi
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“No Till” Gardening

April 14th, 2025
In the wild areas on our planet, trees, bushes, and grasses grow on ground that has continual additions of new layers of dead and dying plant matter. Leaves fall from trees and shrubs, grasses dry in the summer: these materials cover the soil and gradually decompose. No Till gardening takes its cue from…
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Bohart Museum 75th anniversary banner
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Swing That Net!

April 14th, 2025
 Bug Squad BlogBy Kathy Keatley GarveySwing that net! Catch that butterfly!The Bohart Museum of Entomology at UC Davis encouraged people of all ages to show their skills at netting a butterfly replica on the Briggs Hall lawn last Saturday during the 111th annual campuswide UC Davis Picnic Day.The Bohart…
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