Stem Water Potential (SWP) baseline tables
Link to PDF files here
Yearly Archives: 2025
Gophers, Ground Squirrels, and Voles… Oh My!
Becky Wheeler-Dykes, Orchard Systems and Weed Ecology Farm Advisor, UCCE Glenn, Tehama and Colusa Counties Luke Milliron, Orchards Advisor, UCCE Butte Glenn, Tehama Counties In February 2025, Dr. Roger Baldwin gave an excellent presentation on vertebrate pest management at … Continue reading
Integrated Pest Management Update – July 17, 2024
These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. Continue reading
Cytospora Prevention in Late Winter & Early Spring
Jaime Ott, UCCE Tehama, Glenn, Shasta, Butte Luke Milliron, UCCE Butte, Glenn, Tehama Infection by Cytospora and other fungi is a major cause of scaffold and tree loss in prunes, resulting in reduced yield. These fungi can also infect young … Continue reading
Walnut Winter Management UCCE Resources 2025
Jaime Ott, UCCE Tehama, Shasta, Glenn, and Butte Counties With walnut prices modestly up, this is a good time to look at your orchard operation, grade sheets, and pest/disease challenges in the last few years and make a plan for … Continue reading
2025 Prune Fungicide Efficacy Tables
CLICK HERE FOR A LINK TO THE PRUNE FUNGICIDE EFFICACY TABLES (right click -> “Open link in new tab”)
Optimizing preemergent herbicide applications
Ryan J Hill, UCCE Tehama County, Agronomy and Weed Science Advisor Preemergent herbicides are a valuable tool in an orchard’s integrated weed management plan. If you survey a room full of growers, you will get answers across the board as … Continue reading
The case for orchard sanitation
Franz Niederholzer, UCCE Farm Advisor, Colusa and Sutter/Yuba Counties Sudan Gyawaly, UC IPM Advisor, Sacramento Valley Is winter sanitation really necessary? This question was asked at a recent grower meeting. Our answer is YES, now, more than ever in the … Continue reading
2025 Herbicide Registration on California Tree and Vine Crops
Reviewed January 2025 – UC Weed Science Click Here for Herbicide Table on CA Tree and Vine Crops
2025 Almond Fungicide Efficacy and Timing Tables
Click Here for the Almond Fungicide Efficacy and Timing Tables Link
Winter Chill & Dormancy Management – 2025 Update
Kat Jarvis-Shean, Orchard Systems Advisor UCCE Sacramento-Solano-Yolo Depending on where you grow and how you count, this is shaping up to be a low-to-moderate chill winter. As discussed previously in 2023 and 2024, walnuts are one of the highest chill … Continue reading
Almond Orchard Management Considerations: February & March 2025
Almond Orchard Management Considerations: February & March Becky Wheeler-Dykes, UCCE Farm Advisor, Glenn, Tehama, and Colusa Counties Luke Milliron, UCCE Farm Advisor, Butte, Glenn, and Tehama Counties Weed management: Prepare your preemergent herbicide program with your PCA. Cost savings in … Continue reading
Rootstock options for your next prune orchard (2024)
Luke Milliron, UCCE Orchard Advisor Butte, Glenn, Tehama Franz Niederholzer, UCCE Orchard Advisor Colusa, Sutter-Yuba Jaime Ott, UCCE Orchards Advisor Tehama, Butte, Glenn, Shasta The Skinny: Your rootstock choice should guard against your greatest fear for your new orchard, whether … Continue reading
Assessing the Needs of Agricultural Producers in Butte, Glenn, and Tehama Counties
Domena A. Agyeman, UCCE Agriculture and Natural Resources Economics Advisor; Butte, Glenn, and Tehama Counties Introduction This report summarizes the primary challenges reported by agricultural producers from Butte, Glenn, and Tehama counties who participated in an economics needs assessment survey. … Continue reading