- Author: Brad Hanson
This is the last in my series of posts outlining current University of California weed science research published in the California Weed Science Society (CWSS) Research Update and News (June 2013, Volume 9, #2).
Lynn Sosnoskie (UC Davis, Weed Research Project Scientist) wrapped up some of her weed seed biology work from her previous position at the University of Georgia. ...
- Author: Brad Hanson
Kassim Al-Khatib, Director of the UC-Statewide Integrated Pest Management (UC-IPM) Program, sent a couple links about the identification of Palmer amaranth and comparison to other amaranth (pigweed) species. I thought they were useful and potentially of interest to California weed managers so I thought I'd share:
In this first link, Dr Bill Johnson and Travis Legleiter, weed scientists from Purdue University have a video explanation for helping growers identify Palmer amaranth and explain differences between other related species in Indiana (click here for...
- Author: Luis Espino
- Author: Brad Hanson
A repost of an article by Luis Espino (UCCE Farm Advisor, Colusa Co) on the UC Rice Blog.
You can see the originl post HERE
He also had a post on a similar topic earlier HERE that had some results from Albert Fischer and Jim Eckert's research on smallflower umbrella sedge.
- Author: Brad Hanson
A reminder to all who registered already that the 57th Annual UC Davis Weed Day is this Thursday (July 11th). I've attached the agenda for the morning field tour and the afternoon presentation schedule at the end of this post.
If you haven't already registered, you're too late - we've filled up the buses, lunch, and the conference room capacity (we max out at about 150 for this event). However, be sure to put the 58th conference on your calender for NEXT YEAR - July 17, 2014.
We appreciate and acknowledge the sponsors for this event:...
- Author: Lynn M. Sosnoskie
- Author: Ted Webster
- Author: Stanley Culpepper
Since it was first identified in 2004, glyphosate-resistant Palmer amaranth has become the most significant weedy pest of cotton in the Southeastern United States. When acceptable control is not realized, and Palmer amaranth is allowed to set seed, population densities can become quite high in infested fields. For example, research conducted by the University of Georgia indicated that Palmer amaranth seed densities exceeded 35,000 seeds per m2 in a cotton field where the glyphosate-resistant biotype had been ineffectively managed.
To combat Palmer amaranth, some cotton growers in Georgia have resumed using pre-plant deep-tillage and in-crop cultivation in fields with high weed population densities....