UCCE Master Gardeners of San Joaquin County
University of California
UCCE Master Gardeners of San Joaquin County

Posts Tagged: herbicide resistance

Resistant weed workshop in Tulare during Ag Expo (update)

A few weeks ago, we announced the California leg of a series of six national workshops to discuss herbicide resistant weeds.  We're finalizing the list of invitees for the meeting in Tulare on February 15th.  This is during the World Ag Expo,...

Posted on Monday, December 19, 2016 at 11:20 AM

Help wanted: participation in herbicide-resistant weeds workshop

Requesting growers and ag industry members to contribute to the national conversation on herbicide-resistant weeds As part of a national effort on developing research and regulatory priorities related to the challenging problems of herbicide-resistant...

Posted on Wednesday, November 2, 2016 at 1:35 PM

Horseweed resistance

Conyza (young)

From the Topics in Subtropics blog ∴ June 15, 2016 Researchers have now confirmed that six glyphosate-resistant weed species have been identified in California. Four have been known to exist for some time; they are horseweed (marestail,...

Posted on Wednesday, June 22, 2016 at 5:00 PM

What junglerice (Echinochloa colona) genes can tell us about glyphosate resistance in California

Resistant junglerice growing in an almond orchard. Photo courtesy of Marcelo Moretti, UC Davis.

Each of us have the entire blueprint for our bodies contained in every cell, and the same is true of plants. This information is stored in the form of an extremely long molecule known as DNA (in human cells its length is ~6 feet). Studying and...

Posted on Sunday, May 1, 2016 at 8:00 AM

What is that in my grove, Horseweed or Hairy Fleabane?

Photo 2. (Right) Seedlings of hairy fleabane (top) and, horseweed (bottom). (Photo: Shrestha et al. 2008).

As a farm advisor many growers will ask, “What is that in my grove- horseweed or fleabane?” These two weeds have been running rampant in Southern California, as well as other parts of the state and can be seen in every cropping system...

Posted on Wednesday, January 27, 2016 at 11:45 AM

Next 5 stories | Last story

Webmaster Email: mdhachman@ucdavis.edu