By Julie Clark, Community Education Specialist III
Goldspotted borer (GSOB) is a beetle invasive to oaks in California. Infestations have ravaged oak woodlands in San Diego and Riverside counties the last 12 years and in Anaheim Hills, Angeles and San Bernardino National Forests the last few years. Preferred hosts are black oak, canyon oak, coast live oak, and occasionally Engelmann oak.
Oak woodlands are highly valued ecosystems that support numerous species of fauna. Oak trees serve as the anchor for these systems and support over 5000 insect species, over 105 bird species, 105 mammal species, 58 species of amphibians and reptiles during their respective life cycles. Many beneficial insects rely on oaks to complete their life cycles and do not damage the trees in doing so.
GSOB bore into the bark of its hosts to lay eggs and rear young. Mature beetles emerge to find new hosts. The adults leave a distinctive D-shape hole in the bark upon exit. 
The insects damage the water and food transfer structures (xylem and phloem) of the tree, causing crown die-back and eventual death in heavily infested (amplifier) trees. Widespread loss of oaks from GSOB has occurred in Idyllwild and San Diego County mountain areas.
Although GSOB are winged, they do not fly long distance. UC researchers, partners with CAL FIRE and the California Firewood Task Force discovered that several of the infestations throughout Southern California were caused by introduction of firewood imported from infestations in other areas. 
D-shaped GSOB exit holes. Credit: UC ANR
Ventura County is vulnerable to attack by the beetle and other invasive tree pests that are on watchlists for the area. Best ways of being assured your firewood is safe include purchasing locally source material or selecting kiln-dried or certified firewood.
For more information:
Report suspected GSOB infestation:
https://ucanr.edu/sites/gsobinfo/What_You_Can_Do/Report_GSOB_Symptoms/
- Author:
Julie D Clark De Blasio
UCCE Ventura collaborated in this first annual three-day event held at the Museum of Ventura - Agricultural Museum April 22-24. Ventura County Agricultural Commissioner/Weights & Measures (VC-AC/WM) initiated and directed the show, with cooperation from the museum, CE-Ven, Ventura County Master Gardeners (MG), Channel Islands Chapter - California Native Plant Society (CNPS), and Santa Barbara Botanical Garden (SBBG).
The family event included museum garden tours hosted by MG, a mason bee house construction activity by the Museum, iNaturalist participatory-science nature reporting led by SBBG, invasive weed posters created by VC-AC/WM, and the weed and wildflower show display coordinated by VC-AC/WM, CNPS, and CE-Ven.
Several hundred people attended the three-day event. One-hundred twenty weed and wildflower specimens were collected by CNPS and VC-AC/WM.
The maiden event is likely to become an annual springtime occurrence in Ventura County!
Author: Petr Kosina, UC Statewide IPM Program
To raise awareness of pesticide safety practices, February is celebrated as National Safety Education Month. This year the University of California Statewide Integrated Pest Management Program offers help to refresh your knowledge about safe and effective pesticide use. Two frequently sought-after online courses focused on proper pesticide use to avoid illegal residues and proper selection, use, and removal of personal protective equipment are offered for free during the month of February. Use code safety100 at checkout to get your continuing education units (CEU) for free.
Pesticides are among the most regulated chemicals in the country. In the United States, the Environmental Protection Agency (EPA) regulates the use of pesticides. All pesticides must be registered with the EPA, and the agency requires a battery of scientific tests to determine the potential risk to humans and the environment. 
Best practices for using pesticides safely start with reading the label before each pesticide application. How will readingthe label help you? Pesticide labels answer most of the basic questions you need to know about the product, its safe application and handling. Always make applications in strict accordance with all label instructions. Following label instructions will ensure safe, effective, and cost-effective use of the pesticide. Apart from the label, it is important to know what your state regulations are because some state regulations that also have to be observed are not written into the label. Note that not all pesticides approved by the EPA and available for purchase in the United States can be used in California. California is one of the few states that have more strict pesticide regulations for certain pesticides than what is required by the EPA. Even if you have used a given pesticide in the past, make sure you have an up-to-date label, as EPA may occasionally change labels. To learn more about pesticide labels and how to extract information relevant to the specific setting and situation in order to apply pesticides safely, enroll in the online course Proper Pesticide Use to Avoid Illegal Residues. Pest management professionals will earn 2.0 hours of Laws & Regs CEUs.
Because pesticides have the potential to cause injury or illness to anyone working with them, it is important to wear personal protective equipment, or PPE, to reduce a person's exposure to pesticides. PPE includes clothing and certain devices worn to protect the human body from contact with pesticides or pesticide residues. Regular clothing is not considered PPE even though some pesticide labels may indicate that these specific items of regular work clothes can be worn during certain activities. All employees who handle pesticides in California are legally required to wear PPE. They must follow all PPE instructions on the pesticide label and follow all California laws and regulations. To learn how to select the proper PPE, use it, remove it, and dispose of it or clean and store it before, during, and after each incidence of pesticide handling and application, enroll in the online course Proper Selection, Use, and Removal of Personal Protective Equipment (PPE). Pest management professionals will earn 1.5 hours of Laws & Regs CEUs.
Visit the UC IPM website to see all 22 online courses that are available for continuing education credit.
Written by-- Petr Kosina, UC Statewide IPM Program
A brand-new online course on Diagnosing Herbicide Injury focusing on how an herbicide injury situation can arise, what information can help diagnose symptoms during field investigations, and what tools are available to you, is now available from the UC Statewide Integrated Pest Management program (UC IPM).
When unexplained damage is noticed on a crop or other non-weed plant, herbicides are often a primary suspect. That is no surprise because herbicides are very powerful and effective tools used to control weedy plants in a wide variety of locations. However, symptoms of many other plant stresses, such as diseases and nutrient deficiencies or toxicities, can closely resemble the injury symptoms caused by herbicides. Economic implications of herbicide damage can vary–in some cases visible injury may have very little direct economic effect while in others, even slight herbicide symptoms can affect the marketability of affected plants. In addition, the presence of an unregistered herbicide on non-target crops can result in illegal residues which could have both safety and legal consequences.
The new online course was developed by Dr. Brad Hanson and Dr. Kassim Al-Khatib from the Department of Plant Sciences at UC Davis, and UC IPM instructional designers. If you are a grower, pest control adviser, or pesticide applicator, then this course is a great opportunity to learn about how to approach crop injury investigation when herbicide is suspected cause. You will learn how herbicides injure plants, how long herbicide symptoms may last and factors that may influence the time that herbicide injury symptoms are visible, possible scenarios of herbicide exposure based on uniform and variable injury patterns observed in the field, how to prepare samples for the laboratory analysis and more.
The course content is free to anyone who wishes to view it. For those requiring a certificate of completion and continuing education units (CEUs), the regular cost is $30, but we are offering a reduced price of $15 through October 31, 2021. Diagnosing Herbicide Injury course has been approved by the California Department of Pesticide Regulation (DPR) for 1.5 continuing education units (CEU) of Other, Certified Crop Advisor (CCA) for 1.5 units (IPM), and the Arizona Department of Agriculture for 1.0 Credit.
If you are a DPR license or certificate holder with a last name beginning with letters M through Z, then this will be your year to renew. Now is a good time to check out the other UC IPM online training courses offered. All are 50% off the regular price through October 31st. DPR strongly suggests returning renewal packets back to them by October so that your license or certificate can be renewed before it expires. Many of our courses are accredited by DPR for continuing education hours and also by the California Structural Pest Control Board (SPCB), Certified Crop Advisor (CCA), the Western Chapter of the International Society of Arboriculture (WCISA), and the Arizona Department of Agriculture.
- Author: Nicki Anderson
There's a new group just for you being formed in Ventura County.
Join us for an evening of farmer focused conversation. Meet your fellow farmers and connect with others who work in agriculture in our region. The goal is to offer space for farmers to convene and converse. While we might occasionally come into contact with each other at field days, events and meetings, it's also nice to have the opportunity to check-in with fellow growers.
The motivations for this occurrence builds upon inspiration from the Lighthouse Farm Network, organized by CAFF starting in the early 1990s, where farmers would meet around meals to share ideas and strategies for sustainable production.This type of farmer-focused organizing is nothing new in the [(tens of) thousands of] years of agriculture. In this country especially, farmers once were deeply involved in government and economy leadership.
*Cue* George Washington's words:
“Agriculture is the most Healthful, most Useful and most Noble Employment of Man.”
While our biggest obstacles may be seem different from what they have been in the past, today's challenges seem to be moving much faster, are in greater numbers, and are drastically more unforgiving in their devastation. As climates of all types (social, environmental and political) are rapidly shifting, it is important to recognize the varying qualities and values our region has to offer, as well as the obstacles and risks we have to face. As keen observers to the rhythms and patterns of soil, plants, animals, weather, etc, farmers are often the first to notice small differences, and draw from real life experiences working every day in a world that is rapidly changing. In addition to creating connections, these meetings also bring fresh perspective and new confidence for what can happen, creating opportunity for knowledge and experience to be shared.
The kick-off launch party will occur on Friday, June 11, 6pm - 8pm, at McGrath Family Farm in Camarillo. There will be food and beverages, but you're welcome to bring your own!
Please let us know you are coming and reserve your spot by registering HERE
