- Author: Brad Hanson
- Author: WSSA
I received a press release this week from the Weed Science Society of America (WSSA) that I thought would be of interest to followers of the UC Weed Science blog (link above, or attached below).
The press release lays out a dozen examples of "unfortunate (and illegal) consequences that can happen when you don't" follow the information on a pesticide label. I thought the first reason (wrong product,...
- Author: Brad Hanson
A quick post today to share a few links and reposts that I found interesting recently.
The first is a link to a video on the television program, CBS Sunday Morning. In this program from a week ago, weeds were the focus. Click here for a link to the video. The main focus (and most interesting to me as a herbicide resistance researcher) was the main segment where Dr. Stanley Culpepper from the University of Georgia talked very frankly about the issues that...
- Author: Brad Hanson
The Spring 2012 edition of UCNFA News, the online newsletter for the UC Nursery and Floriculture Alliance, is now available for viewing. This issue focuses on weeds and weed management for nursery and floricultural operations.
To view or download the newsletter in PDF format go to this link: http://ucanr.org/sites/UCNFAnews/Download_Newsletter_PDF/?newsitem=42782
/span>- 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!
- Author: Brad Hanson
Residual or soil applied (ie. preemergent or PRE) herbicides can provide many benefits to weed managers. In contrast to foliar-applied (postemergent) herbicides that only affect the weeds present at the time of the application, residual herbicides persist in the soil and have activity on weeds that germinate after the application. Depending on the chemistry of the specific herbicide, the rate applied, weed spectrum in the field, and environmental conditions, weed control may last for several weeks or months.
When performance problems arise with residual herbicides, they usually take the form of either unexpectedly short or unexpectedly long residual activity. As illustrated in the line diagram below, our goal with residual...