- 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: reposted from EBIPM.org and the Western Society of Weed Science
Reposting of an announcement for a Field School sponsored by the Western Society of Weed Science. This is not a UC Field School but may be of broad interest to western landmanagers fighting invasive weeds.
The informational flyer can be found here: http://sfc.smallfarmcentral.com/dynamic_content/uploadfiles/152/flyer%20for%20website.pdf
2011 EBIPM Field School - Park Valley, Utah
Sponsored by the Western Society of Weed... |
- 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...
- Author: Lars Anderson
Since the early 1980s, the California Department of Boating and Waterways (BWW) has been increasingly successful in managing two invasive aquatic weeds in the Sacrament-San Joaquin Delta: water hyacinth (Eichhornia crassipes) and Brazilian waterweed (Egeria densa). Now, over the past few years, a new threat has emerged: South American Spongeplant (Limnobium laevigatum). A native of South America, Central America and Central Mexico (as the name implies), this is a prolific, floating, flowering plant in the “frogbit” family (Hydrocharitaceae).
Spongeplant infestations were first found in 2003 in small ponds in Redding and Arcata, CA, but more was discovered in the San Joaquin River by CDFA and...
- Posted By: Brad Hanson
- Written by: Anil Shrestha, Kurt Hembree, and Steven Wright
Someone asked me a question this morning about management option for hairy fleabane and it reminded me of a nice publication that Anil, Kurt, and Steve put together a couple years ago. See ANR Publication 8314 here: http://ucanr.org/freepubs/docs/8314.pdf It is also attached as a pdf at the bottom of this post.
These two weeds have been around for a long time but are becoming more widespread throughout the Central Valley and other parts of California in large part due to the selection of glyphosate-resistant biotypes. Both weeds are early invaders of disturbed areas but do not tolerate too much additional tillage because the seedling do not emerge from very...