- Author: Guy B Kyser
- Author: Joseph DiTomaso
Yellowflag iris (Iris pseudacorus L.), native to Europe, is an emergent invasive of pond margins, ditches, and other wetland sites in much of the United States. It forms dense stands which displace native sedges and rushes, reducing waterfowl habitat and water flow. Yellowflag iris reproduces by seeds and through rhizome fragmentation. The rhizomes make it hard to remove mechanically. Accessing an infestation for making herbicide applications can be problematic. Because of its height and density, and because it grows in shallow water and mud, yellowflag iris is difficult to treat with hand-held booms or mounted...
- Author: Brad Hanson
Last Thursday (July 19th) was the 56th annual UC Weed Day at the Davis campus.
We had a really good turnout again this year with just under 150 participants including weed science researchers, students, farmers, land managers, pest consultants, and government agency people in attendance. Cooperative Extension Specialist Tom Lanini organized the morning field tour and afternoon presentation session and ordered up really great weather for the day.
We started out on campus for registration and signing up for various continuing educaton credits before heading out on two buses and a parade of trucks and vans to the...
- Author: WSSA
- re-poster: Brad Hanson
A quick repost this morning on the upcoming meeting of the Aquatic Plant Management Society. Invasive aquatic weeds are a huge problem in some river, canal, and lake/pond systems in California and around the world. Management of aquatic weeds on a large scale is complicated by: complex ownership and management of water ways, limited mechanical and chemical control options, and aggressive plant biology.
The aquatic plant management society has an annual conference to discuss current research and the state of the art when it comes to manage these challenging plants. Click here for...
- Author: Brad Hanson
We received several calls yesterday from a news organization in San Francisco about a CDFA biocontrol program for an invasive aquatic weed, water hyacinth.
I'm a terrestrial weed guy who works mostly in orchards and vineyards, not aquatics so I kept a low profile. However, I think biocontrol of invasive weeds is really interesting and decided to share two links about the program. This from KTVU Channel 2 in San Francisco: http://www.ktvu.com/news/28704763/detail.html and here is the official Press Release on the CDFA program:
- Posted By: Brad Hanson
- Written by: Smith, Roncoroni, Blodget, Blankinship, Tjosvold, Fennimore
This week we are finalizing plans for the 55th Annual UC Davis Weed Day on July 14th. It's not too late to register if you are interested in a sampling of the current weed science research at UCD! More info and registration information on Weed Day can be found here: http://wric.ucdavis.edu/events/weed_day_2011.htm
We've been busy this getting the agenda finished, spraying a few last herbicide treatments, and working out the many logistic details (thanks Gale P. for her focus on logistics!). I was thinking about what (and when) I'd post on the blog this week and, voila, the California Weed Science Society...
