- Posted By: Brad Hanson
- Written by: Rebecca Miller-Cripps
Article originally posted on the UC ANR Green Blog. Written by Rebecca Miller-Cripps and reposted with permission. Brad
Weeds, weeds, weeds! Have you noticed? This has been a banner year for weeds. Puncturevine where I’ve never seen it before. Garden soil covered with common purslane (at least it’s good in salads). And solid stands of yellow starthistle everywhere!
- Posted By: Brad Hanson
- Written by: Kurt Hembree, Ryan Allen, Curtis Rainbolt, Jim Mueller et al., Richard Smith and Larry Bettiga, Emilio Laca et al., and others
Today I thought I'd put in a plug for the California Weed Science Society (CWSS) annual meeting to be held January 23-25, 2012 in Santa Barbara. Information on the meeting can be found in the October newsletter at: http://www.cwss.org/PDF/CWSS_Fall_2011_Newsletter.pdf and links to the Program and Registration can be found at: http://www.cwss.org/. The main CWSS page also has information on a new Photo Contest, the Student Paper and Poster Contest, the Student Scholarship Program, and Awards and Honors presented to students and members last year.
Also, I've attached a link to the
- Posted By: Guy B Kyser
- Written by: Guy Kyser
Joe DiTomaso, John “JR” Roncoroni, and I evaluated a purple starthistle trial in Napa County last month. Several selective herbicides, two times of application, etc etc… one of the replications got flooded out, so I can vouch that Very High Rates of H2O are capable of controlling this weed… but the point of this post is a neat idea that JR had during the evaluation.
With digital cameras, it's become more or less routine to photograph every plot during evaluation. Sometimes it really helps with interpreting the data if you can take another look at the plots after running the statistics. But many of our plots are a long drive away, and in the meantime the sun has turned all the vegetation into...
- Author: Guy B Kyser
Last entry I talked about the problems with artichoke thistle (Cynara cardunculus L.) in the Sacramento Delta and other coastal regions. Again, this thistle was introduced to California as the cultivated artichoke, but escaped to become a serious rangeland weed.
Because stands of artichoke include perennial adults, new seedlings and a persistent seedbank, the best means of control is likely to be broadcast application of a selective herbicide with both foliar and soil-residual activity.
Starting in fall 2010 we tested several such treatments at a dense infestation of artichoke thistle in the Montezuma Hills, Solano County. We made applications at three timings: fall (December 16, 2010), winter (January 26,...
- Author: Rob Wilson
Part of my job as the Director/Farm Advisor at the Intermountain Research and Extension Center involves overseeing weed management programs for a variety of crops and non-cropland at the Center. Over the last month, I’ve observed the outcome of these programs as many of the crops are nearing harvest. This spring I would have given myself an “A” grade for weed control. We treated crop fields with a combination of control methods and made an aggressive push to control weeds along roads, ditches, and field borders. Unfortunately, as time goes on I think I need to downgrade my performance to a “B” because some fields and roadsides now have quite a few weeds.
In reviewing field records, one factor was a common denominator at...