- Author: Dong Hwan Choe
UCR Fumigation School was successfully held on Oct 27-28, 2021 at Kellogg West Conference Center (Pomona, CA). We had over 70 participants for the event from pest management industry and other related fields serving in pest management. Here are some photos from the event.
To find more about the UCR Fumigation School and 2021 program, visit HERE.
/span>- Author: Rose Marie Hayden-Smith
Learn About California Agriculture
Join us on Thursday, May 21st, 9:30 am PST, for Part 2 of a webinar series on California agriculture, where we'll learn about major crops and production areas. This webinar will feature UCCE Ventura County advisors Andre Biscaro and Ben Faber. Watch it live or view after on YouTube. Part 1 is up. This is an ideal webinar series for the home classroom.
Fumigants and Non-Fumigant Alternatives: Regulatory & Research Updates
Growers, PCAs, applicators and supervisors of fumigant and non-fumigant technologies and decision makers should plan to attend this free, virtual educational outreach event, scheduled for Monday May 29th from 8:00 a.m. to 12:00 p.m. This workshop is open to the public. Although targeted to strawberries, most of the learning will generally apply to other crops. The program is being hosted by Dr. Oleg Daugovish, who serves as the Strawberry and Vegetable Crop Advisor for UCCE Ventura County.
Topics include:
- Most pertinent regulatory requirements for fumigant use and application
- Industry updates on fumigant and non-fumigant tools use
- Fumigant application based on need within fields
- Soil-borne pathogen management
Continuing Education Units are available: 1.5 hours of "Other" and 1.0 hours of laws and regulations have been applied for from California Department of Pesticide Regulation (DPR).
Registration is required and participants will receive a link and instructions prior to the workshop. Register here.
Announcing Treemendous Learning Webinars for Middle and High School Students
Join us on alternate Tuesdays in May and June, 3:00 pm to 4:00 pm, for this opportunity designed for middle and high school students. Treemendous Tuesdays is a collaboration of U.S. Forest Service, Los Angeles Center for Urban Natural Resources, California Project Learning Tree, California 4-H, and UC Agriculture & Natural Resources
Five webinars will be hosted every other week starting May 5 and ending June 30. These events are free and registration is required.
- May 5: Invasive Species (invasive shot hole borers)
- May 19: Invasive Plants & Trees
- June 2: Benefits of the Urban Forest
- June 16: iTree
- June 30: Living with Fire
Register at https://ucanr.edu/survey/survey.cfm?surveynumber=29846
New Resource to Diagnose and Manage Plant Disease
UC's Integrated Pest Management Program has a new Pest Notes publication available, which provides information to help diagnose and manage Anthracnose, fungal diseases that can impact many deciduous and evergreen trees and shrubs. These diseases can also infect vegetables, flowers, fruit and turfgrass in some regions in California. Dr. Jim Downer, an Advisor in our UCCE Ventura County office, is a co-author.
Preparing for Fire Season
UC ANR has organized an electronic portal - Homeowner's Wildfire Mitigation Guide - that contains a wealth of resources to help homewoners prepare for fire season. Please visit our Fire Resources and Information page for the latest research and information.
Follow Us on Facebook and Instagram
We'd love to interact with you on social media. Like our Facebook page and visit us on Instagram.
- Author: Cheryl Reynolds
Note from Cheryl Wilen: This information may apply if you are located in an area that has restrictions on VOC emissions. This is currently the San Joaquin Valley including all of San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, and Tulare counties and the valley portion of Kern County. For more information about the regulations see the fact sheet link below.
As summer continues to heat up, keep in mind that regulations remain in effect to reduce the volatile organic compounds (VOCs) that can be emitted into the atmosphere by pesticides and other harmful chemicals and contribute to the amount of ozone or smog in the environment.
Calculators from the Department of Pesticide Regulation (DPR) that determine the VOC emissions from fumigant and non-fumigant pesticides before application are available to help growers, pest control advisers, and pesticide applicators comply with the regulations. The UC Statewide Integrated Pest Management (IPM) Program provides a link to these calculators from each of the treatment tables in the UC Pest Management Guidelines. Click on the Air Quality – Calculate emissions button.
Take steps to reduce VOCs. Avoid emulsifiable concentrate (EC) formulations as they release the highest VOC emissions. Pesticide control advisers and growers can also reduce VOC emissions by employing IPM practices such as using resistant varieties, traps, exclusion, and biological control. When using pesticides, spot-treat and seek low-emission materials. Solid formulations, such as granules or powders, are best.
Check the fact sheet on the DPR web site for the most up-to-date-information on VOC restrictions and regulations.
- Posted By: Sandra Willard
- Written by: Janet Byron, (510) 665-2194, jlbyron@ucdavis.edu Janet White, (510) 665-2201, jlwhite@ucdavis.edu
UC scientists now report that use of totally impermeable film in strawberry fields can improve the effectiveness of a widely-used MB alternative known as 1,3-D (1,3, dichloropropene). Use of the film reduces the amount of 1,3-D needed to maintain yields, while lowering field emissions overall.
The strawberry industry is highly dependent on soil fumigation to control pests and maintain high yields. The methyl bromide alternative, 1,3-D, can be used only in certain quantities, due to air quality concerns.
In a recent trial, totally impermeable film (TIF) was laid out over Salinas fields to prevent the fumigant from leaking. The new film was compared with the standard film used by growers. Fumigant concentrations under TIF were 46 percent to 54 percent higher than under standard film, and the higher concentrations were correlated with higher strawberry yields and better weed control. Scientists report these findings in detail in the October–December 2011 electronic edition of the University of California’s California Agriculture journal.
Impermeable films have three benefits, according to lead author Steven Fennimore, UC Cooperative Extension specialist and weed scientist in UC Davis Department of Plant Sciences. The films trap the fumigant in the soil for a longer time and thereby increase its effectiveness; they reduce fumigant emissions, which after reacting with nitrogen oxides, can convert to ground-level ozone; and they reduce the amount of fumigant needed for effective pest control.
Emissions are a chief concern. Methyl bromide, a widely used fumigant in combination with chloropicrin, has been phased out since 2005 because it is an ozone-depleting substance targeted by the Montreal Protocol (a global treaty to control ozone depletion) and the U.S. Clean Air Act. However, it is still being used in some California strawberry fields under a critical-use exemption. Restrictions on the use of 1,3-D to 90,250 pounds per 36-square-mile township (called the township cap) leave few other options for growers in key strawberry production areas near densely populated areas.
Comparing TIF with standard film, and methyl bromide plus chloropicrin with varying amounts of 1,3-D plus chloropicrin, the scientists rated the effectiveness of TIF. The results, writes Fennimore, suggest that to achieve fruit yield and weed control similar to methyl bromide and chloropicrin, 33 percent less 1,3-D plus chloropicrin is needed under TIF than standard films.
TIF may ease some of the burdens of fumigant regulations on end-users, as well as ease concerns of the general public about exposure to fumigants, he concludes.
The entire October–December 2011 issue, and the electronic edition, can be viewed and downloaded at http://californiaagriculture.ucanr.org.
California Agriculture is the University of California’s peer-reviewed journal of research in agricultural, human and natural resources. For a free subscription, visit http://californiaagriculture.ucanr.org, or write to calag@ucdavis.edu.
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WRITERS/EDITORS: To request a hard copy of the journal, email crllopez@ucdavis.edu