- Author: Brad Hanson
UCIPM Press Release:
New UC IPM photo repository shows plant damage from herbicides
January 9, 2015 – Davis, California
Identifying nontarget crop and ornamental plant damage from herbicides has become much easier, with the launch of a new online photo repository by the Statewide IPM Program, University of California Division of Agriculture and Natural Resources.
Dr. Kassim Al-Khatib, weed science professor at UC Davis and director of the UC Statewide Integrated Pest Management Program (UC IPM), has gathered nearly a thousand...
- Author: Brad Hanson
I was forwarded this great article written by Barry Tickes, an Area Agricultural Agent with the Yuma Ag Center and part of the University of Arizona and Arizona Agricultural Experiment Station.
With Barry's permission, I've posted his explanation of "lift off" or "codistillation" of herbicides. The article and other is in that issue of Vegetable IPM Updates can be found
- Author: Oleg Daugovish
Growers and pest control advisors look at strawberry plants daily and see problems often. Some problems like salt injury are frequent while others, like frost injury are only seen once in a few years. With over 60 pathological, physiological and nutritional problems it is important not to overlook injury from herbicides. In collaboration with UC strawberry workgroup members we recently launched a bi-lingual web site that displays injuries and disorders from chemical and other causes.
The site is a work in progress as we continue to add images of problems, translation into Spanish and update the content of existing pages with new information. We hope that with improved access to images and descriptions the site can be useful in...
- Author: Carl Bell
- Posted by: Gale Perez
A recent blog post titled–Plant growth and development and herbicide efficacy discussed herbicides like glyphosate and imazapyr that move through plants in the sugar conducting tissues (aka phloem or symplastic system).
There are some herbicides that move in the water conducting tissue (aka the xylem or apoplastic system). These herbicides, mostly in older classes of chemicals, enter plants through the roots and travel upward to the leaves where you see their effect. Many of these herbicides are only used in crops, so it is unusual that anyone working in a natural area will ever encounter them.
Others, such as diuron or bromacil are used to some in roadsides, under pavement, industrial areas, railroad beds, and...
- Author: Brad Hanson
- Article author: Kurt Hembree
- Article author: Tom Turini
This is the third in my series of posts outlining current University of California weed science research published in the California Weed Science Society (CWSS) Research Update and News (June 2013, Volume 9, #2).
Kurt Hembree and Tom Turini (both UCCE Farm Advisors in Fresno Co) discuss some issues related to herbicide persistence and crop safety in processing tomato that appears to be related to changing irrigation practices. Historically, tomato crops were sprinkler irrigated after...