Roller Crimping – A Cover Crop Termination Option
Annie Edwards and Margaret Smither-Kopperl with the USDA recently released a report on termination using a roller crimper in orchard systems. Continue reading
Yearly Archives: 2024
Autumn freeze damage strikes again (2024)
Autumn freeze damage in walnuts can occur when trees experience freezing temperatures prior to going into dormancy. Since 2018, we’ve learned management practices that can prevent widespread damage. Continue reading
Ethephon for Earlier Harvest
Ethephon, also known as Ethrel®, is an ethylene-based plant growth regulator applied at walnut maturity, or shortly thereafter, which accelerates hull cracking and separation from the shell. This advances walnut harvest by four to seven days, depending on the season and variety, and nut value is increased by lighter kernel color and possibly less insect damage. Continue reading
Carpophilus beetle ID guide
UC IPM has released a new resource to help identify carpophilus beetle Continue reading
Previous Northern Sacramento Valley ET Reports – July 2024
This report covers the CIMIS stations in Gerber, Biggs, Durham, and Williams for June 28 – Aug 1, 2024. Continue reading
What are you doing for your orchard’s financial longevity?
Your orchard is an investment – the longer it remains a productive, high-yielding orchard the higher your return on that investment Continue reading
Phellinus wood rot, or “Why do my trees blow up at harvest?”
California’s prune industry faces a significant challenge: a decline in orchard lifespan. A primary disease culprit associated with premature orchard decline is the loss of fruit-producing scaffolds likely caused by the heart rot fungus Phellinus pomaceus (formerly called P. tuberculosus). Continue reading
The Big Three in Prunes
The three most important management decisions dictating fruit size and crop size (and therefore grower returns) are 1) cropload management, 2) irrigation, and 3) nutrient management (especially potassium). Continue reading
Making money at harvest
Sustainable net return to grower is the measure of success in farming. Because profit margins shrink with increasing costs, small income increases (that don’t impact overall orchard health) can have major benefits to an operation’s bottom line. Continue reading
Integrated Pest Management Update – July 22, 2024
These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. Continue reading
Panel Discussion: Perspectives on Walnut Economics – a recap
Clarissa Reyes, Orchard Systems Advisor, Sutter-Yuba, Butte & Placer Countie Jaime Ott, UCCE Tehama, Shasta, Glenn & Butte Counties Becky Wheeler-Dykes, UCCE Glenn, Colusa & Tehama Counties In February 2024, the Sutter-Yuba and Tehama Walnut Day meetings featured panel discussions … Continue reading
Previous Southern Sacramento Valley ET Reports – July 2024
This report covers the CIMIS stations in Woodland, Davis, Staten Island, and Verona for June 28 – Aug 1, 2024. Continue reading
Timing almond harvest in 2024
Historically, the recommendation from UC almond experts for the ideal time to shake was as soon as 100% hull split occurred throughout the orchard, however, these considerations vary widely among varieties and locations. Potential challenges that growers should consider when timing harvest include pest and disease management, nut removal/drying time, and nut quality. Continue reading
Find Small Improvements: The 5% Rule
Rising production costs continue to squeeze profit margins for prune growers. The five percent rule can be an effective principle for improving profits, advocating for small improvements across multiple aspects of an operation rather than striving for large gains in one or two areas. Continue reading
Carpophilus Beetle: What We Know
Carpophilus beetle (Carpophilus truncatus) is a small insect that causes severe damage to almond kernels. Humid conditions increase the emergence and rate of development, leading to multiple generations within a season. Continue reading