Integrated Pest Management Update – August 7, 2018
These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. Continue reading
Author Archives: Emily Symmes
Previous IPM Updates – July 13, 2018
These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. Continue reading
Previous IPM Updates – July 6, 2018
University of California Sacramento Valley Integrated Pest Management Update Report date: July 6, 2018 The most current report is available here. Disclaimer: These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. They are … Continue reading
Previous IPM Updates – June 28, 2018
University of California Sacramento Valley Integrated Pest Management Update Report date: June 28, 2018 The most current report is available here. Disclaimer: These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. They are … Continue reading
Previous IPM Updates – June 9, 2018
University of California Sacramento Valley Integrated Pest Management Update Report date: June 9, 2018 The most current report is available here. Disclaimer: These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. They are … Continue reading
Previous IPM Updates – May 25, 2018
University of California Sacramento Valley Integrated Pest Management Update Report date: May 25, 2018 The most current report is available here. Disclaimer: These updates are provided as reference information for Sacramento Valley orchard pest and natural enemy activity. They are … Continue reading
Monitoring Codling Moth In and Near Mating Disruption Orchards
It is important to understand how mating disruption affects the ability to monitor codling moth in walnut orchards under mating disruption (MD) as well as in orchards in proximity to MD. Other monitoring methods are necessary in and near MD orchards to effectively manage codling moth populations. Continue reading
March IPM Breakfast Meeting
Reminder! Sutter-Yuba Counties IPM Breakfast Meeting next Tuesday, March 14th, 2017 at 7:30am. We will largely focus on orchards crops (but everything is on the table for discussion!). Planned topics include managing spring diseases in a wet year and getting … Continue reading
Post-Harvest Walnut Navel Orangeworm Update-2016
Now that the 2016 season has come and gone, it is a good time to reflect on pest management issues and use information learned to improve our IPM program in the coming year. Navel orangeworm (NOW) appeared to be a significant factor again in 2016 in walnut damage assessments. A number of growers and PCAs were caught off-guard by the worm damage present in 2016. Here are some considerations for planning your integrated NOW management program for 2017. Continue reading
New Walnut Pest Management Guidelines Released
The University of California Integrated Pest Management (UC IPM) program has just published the latest comprehensive revision of the online Pest Management Guidelines for Walnut. Continue reading
Harvest Damage Evaluation for Walnuts
Harvest of the earliest walnut varieties has begun in some locations. Plan accordingly to obtain the ever-important harvest samples! Harvest samples can reveal a number of common sources of kernel, shell, and hull damage. These include damage caused by insect pests, diseases, and environmental/physiological factors. Here are information, tables, and photos that can help identify the sources of damage in your walnut harvest samples. Continue reading
Approaches to Spider Mite Management in Almonds
Spider mite management in almonds can be accomplished through one of two general approaches: starting with a prophylactic early-season treatment or using threshold-based treatment timings and conservation biological control. Both have pros and cons, and each method can be used … Continue reading
Walnut Husk Fly – Updates
Walnut husk fly (WHF) continues to plague walnut production in many areas, often requiring multiple insecticide applications each growing season to achieve adequate control. This pest provides particular challenges to an integrated pest management program due to the nature of its life cycle and lack of natural enemies. Precise timing based on monitoring method and rotation of chemistries to minimize resistance risk are keys to successful long-term control of this pest. Continue reading
Navel Orangeworm Management Considerations to Protect Walnut Quality
Degree-day model predictions from local almond orchards indicate that a fourth NOW flight is expected to occur when many walnut varieties are at their peak susceptibility. In a year when crop value has declined, ensuring high quality nuts is critical. Here are some considerations for NOW management in walnut. Continue reading
Reminder! IPM Breakfast Meeting- Tuesday, February 14th
Starting at 7:30am — We will largely focus on orchards crops (but everything is on the table for discussion!). Planned topics include managing winter & spring diseases in a wet year, pollinator safety during bloom, and getting your pest monitoring … Continue reading