The IR4 program conducts a significant amount of research to facilitate registration of pesticides (both conventional and biopesticides) on specialty crops.  The program also supports similar work on a range of non-food crops through the Environmental Horticulture program.

Recently, the IR4 Environmental Horticulture program (authors Vea, Hester, and Palmer) published an online report about a series of experiments conducted between 2008-2019 to evaluate Oxalis spp in container nurseries.  This summary of 27 experiments included a range of preemergence herbicides and some postemergence materials on several key oxalis species. 

Lots of great information in this...

I just read Ben Faber's blog post titled "Weed ID in Your Hands" from the Topics in Subtropics blog. Ben mentions,

"Who says you can't know all those wild things growing in the field you didn't put there? Here's a chance to learn what they are for cheap. UC Publications is having a book sale and they are a deal until February 14."

These are the lowest prices I've seen for these...

I was debating about what to post on the weed blog this week and, like manna from heaven, a topic dropped in my lap!

Well ok, it was actually the summer newsletter from the Western Society of Weed Science but it had an article about biological control agents on houndstongue (Cynoglossum officiniale). 

The article, entitled "Houndstongue Biological Control: Status Report" was written by Carol Randall from the USDA Forest Service.  You can find the article at this LINK and scroll down to page 11 for Carol's summary...

In late 2016 and early 2017, the Weed Science Society of America (WSSA) organized a series of seven "Herbicide Resistance Listening Sessions" around the country. 

Brian Schutte (from New Mexico State University) and I co-hosted the Southwestern session in Tulare, CA on February 15, 2017 and, if you're a regular reader, this may sound vaguely familiar since I tried to drum up interest on the blog in November 2016 and Pratap shared