- Author: Bradley Hanson
I learned recently that the preplant incorporated (PPI) herbicide ethalfuralin (Sonalan HFP) was labeled for use in hemp and stevia. See below for the CA/NY supplemental label or download it from your preferred label website.
The use petition was submitted to US-EPA by the IR4 program (see EPA docket EPA-HQ-OPP-2021-0130 at www.regulations.gov if you're into that kind of thing).
This herbicide is as WSSA Group 3 herbicide that is usually applied to the soil before planting and incorporated into the soil with mechanical methods or irrigation. After incorporation, the crops can be seeded or transplanted at a sufficient depth that the crop roots grow beyond the...
- Author: Bradley Hanson
One of the largest weed issues affecting the California processing tomato industry is the parasitic plant, branched broomrape (Phelipanche ramosa; Orobanche ramosa)
- https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50241
- https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=47701
- https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=43342
Last week, CDPR issued a positive decision on a 24c "Special Local Needs" label...
- Author: Brad Hanson
"A Virtual Conference to Discuss Real-World Weeds".
That's a great tag-line for the California Weed Science Society conference and a sign of the times.
Even though our in-person interactions as weed researchers, managers, and regulators has been put on hold this year, weed control goes on and so does the need for the education and updates provided by the CWSS.
Please remember to register for the conference this year to keep up your education and training and get the latest information as well as supporting YOUR California Weed Science Society. The program committee has put together another...
- Author: Brad Hanson
On January 22, 2020, the US Environmental Protection Agency (EPA) released the Interim Registration Review Decision on glyphosate.
Since this important herbicide has been a topic of considerable discussion in the past year (in fact, the report may have actually been released while I was attending a session focused on glyphosate at the recent California Weed Science Society conference with about 500 California weed managers), I'll post a few links to the EPA decision for those interested.
Here's a link to a good landing page for the Interim Decision...
- Author: Brad Hanson
A quick note to share a link to our (semi) regularly updated "Herbicide Registration on California Tree and Vine Crops".
Click here for a link to the PDF version on the Weed Research and Information Center page (this is probably your best bet for the most up-to-date version). I've also attached the pdf version at the bottom of this posting as well as the low-resolution image right here. --->
There were quite a few updates to this version compared to the last one I did in early 2016. This reflects both real activity in label expansion as well as...