UCCE Master Gardeners of San Joaquin County
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UCCE Master Gardeners of San Joaquin County

Posts Tagged: herbicide resistance

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

Mesotrione for weed control in orchards

Broadworks

March 16, 2016.  Editor's note.  I recently was informed of an error in the chart Lynn included in this post from December 2018.  While Broadworks (ai = mesotrione) herbicide IS registered in several  stonefruit crops, it is...

Tree and Vine crop herbicide registration 031616
Tree and Vine crop herbicide registration 031616

Posted on Friday, December 18, 2015 at 10:06 AM

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