- Author: Anne Schellman
- Interested in helping others and giving back to your community.
- Excited about gardening and meeting other like-minded volunteers.
- Interested in learning science-based information about gardening.
If so, consider applying to our program for 2024. To learn more details and apply, visit https://ucanr.edu/sites/stancountymg/Become_a_UCCE_MG/
- Author: Anne Schellman
Who are the UC Master Gardeners?
UC Master Gardeners are trained volunteers that help the public by teaching classes, attending outreach events, working in our demonstration gardens, answering our help line, and more!
How are UC Master Gardeners Trained?
Classes are taught by University experts on water management, soils and fertilizers, ornamental and drought tolerant plants, landscape tree care, vegetable and fruit tree care, integrated pest management, to name a few.
Program requirements include weekly reading and quizzes, and a final exam. All “tests” are open book, and collaboration on assignments is encouraged. Trainees are provided any needed assistance by Master Gardener mentors.
When does the Program start?
The weekly training program starts in January and ends in May of 2024. The training is held from 8:30 a.m. to 1:00 p.m. once a week for 18 weeks. (Trainees must complete 50 hours of instructional time to graduate.)
How Can I Apply and what is the Deadline?
Visit Become a UCCE Master Gardener website page for answers to frequently asked questions, and to download an online application. The application deadline is August 18, 2023. If you miss the deadline, please apply to be put on a waiting list.
Interest List
Last week I sent an email to people that signed up for our interest list. If you did not receive it, your email could not be delivered, bounced back, or was incorrect. (I received several of these notifications.) Please first check your spam, and then contact me if you believe your email may have been problematic.
Thanks!
*You must be a Stanislaus County resident to apply to this local program. For other county programs, visit http://mg.ucanr.edu/FindUs/
photos by Anne Schellman
- Author: Travis Bean
- Author: Josh S. Davy
- Author: Guy B Kyser
- Author: Elise Gornish
- View More...
From the California Agriculture 75(2):83-89. https://doi.org/10.3733/ca.2021a0011
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Abstract
Link to full article: https://doi.org/10.3733/ca.2021a0011
- Author: Brad Hanson
Its not too late to register for the San Joaquin Valley Spray Application Short Course (November 12-14).
Here's a link to the webpage: https://ucanr.edu/sites/SJVSprayApplication/Home/
Here's a link to the full agenda: https://ucanr.edu/sites/SJVSprayApplication/Agenda/
- Author: Steven A. Tjosvold
Generally, fungicides need to be applied preventatively, before infection occurs, to be most effective in controlling diseases. But what if Phytophthora fungicides are inadvertently applied after root infection? What can be done to improve their timing and effectiveness?
A series of experiments evaluated the efficacy of 8 commercially available biological and conventional fungicides for the management of crown rot on Gerbera caused by Phytophthora cryptogea. The fungicides were either applied before the pathogen was introduced to the soil (preventatively) or after the pathogen was introduced to the soil and root infection had already occurred. The new conventional fungicides oxathiapiprolin (Segovis®) and mandipropamid (Micora®) provided effective preventative control of crown rot. None of the other 6 tested fungicides effectively prevented disease in this particularly rigorous evaluation. These ineffective fungicides included mefenoxam (Subdue Maxx®), cyazofamid (Segway®), Aluminum phosphonate (Areca®), etridiazole (Terrazole®) and Trichoderma species (Root Shield Plus®), and Bacillus amyloliquefaciens (Triathlon®).
When mefenoxam (Subdue Maxx ®), was applied to the soil after the soil was infested with P. cryptogea, Gerbera were mostly free of any above-ground and root symptoms. At the end of the experiment, the pathogen was recovered from healthy looking root balls when the roots were cultured in the laboratory (See previous blog post regarding the problem of masking symptoms). The other 7 fungicides were ineffective when applied after the soil was inoculated; the treated plants eventually died although more slowly than the untreated plants.
It is important to time the application of Phytophthora fungicides to prevent infection. Applications can be made prior to environmental conditions that are conducive to propagule spread and infection, such as before rainy periods. If disease is detected in the nursery crop, it is important that diseased plants should be rogued from the crop early, before fungicides are applied. A scout should key in on above ground symptoms and confirm that roots or root crowns are rotted. If diseased plants are found, nearby plants that aren't necessarily showing above ground symptoms need to be checked for root rot too. All plants with root symptoms should be rogued, and fungicides could be applied to nearby plants to prevent infection from outlying infectious propagules.
See Phytophthora above-ground and root symptoms:
For a complete research report: please contact me at satjosvold@ucanr.edu
This fungicide evaluation was partially funded by the California Cut Flower Commission (KKRF Endowment) and California Association of Nurseries and Garden Centers (CANERS Endowment).