UC Weed Science (weed control, management, ecology, and minutia)

I thought I'd followup on my post last week about herbicide resistant weeds with a little more detail on our recent (and ongoing) work on glyphosate-resistant horseweed (Conyza canadensis) which is also known as mare's tail.

This is a reposting of an article I recently wrote for the California Weed Science Society Journal (also reprinted by Western Farm Press). The article is based on a presentation I made at the California Weed Science Society annual meeting in Visalia last January.

63rd Annual Conference California Weed Science Society Weed Control: Balancing Biology, Reality & Sustainability Conference dates: January 19, 20 & 21, 2011 Portola Plaza Hotel Two Portola Plaza Monterey, CA 93940 (888) 222-5851 Click here for Society Info Click here for Conference Agenda Click here...

This week I received an email request for information on the soil concentration of herbicide necessary to have a phytotoxic effect. This is a simple-sounding question and I was able to confidently say Well, that depends..

Last week (December 1, 2010), the California Department of Pesticide Regulation (CDPR) registered the soil fumigant Midas for use in the state following months (years) of controversy and protests.