- Author: Brad Hanson
It's that time of the year when I try to update the list of herbicides registered for use in California orchard and vineyard crops. The attached version has all the updates that I have been made aware of by my industry reps during the year. However, I have not done my end-of-year-herbicide-label-reading-marathon yet so it may change slightly over the next few weeks once I do that. Over the next few weeks, I'll try to discuss some of the more important changes in the T&V herbicide landscape.
Today, I'll focus on what could be important news for vineyard weed managers, registration of a new active ingredient for grape vineyards. Flazasulfuron (trade name: Mission...
- Posted by: David Low
- Re-posted by: Gale Perez
Abstract
Non-synthetic herbicides offer a potentially useful addition to the suite of weed management tools available to organic growers, but limited information is available to guide the optimal use of these products. The objectives of this research were to 1) evaluate the efficacy of clove oil and vinegar based herbicides on weeds across multiple states, and 2) assess the potential role of temperature, relative humidity (RH) and cloud cover in explaining inter-state variations in results. From 2006 to 2008, a total of 20 field trials were conducted in 7 states using an identical protocol. Seeds of brown mustard were sown and herbicides applied to both mustard and emerged weeds when mustard reached the 3-4 leaf...
- Author: Brad Hanson
Ok, I'll admit that I fully intended to do something useful today but got distracted thinking about weed control research, weed science extension, and herbicide-resistant weeds (what do YOU think about on Saturday afternoon?).
Anyway, while procrastinating today, I ran across the blog of one of my weed science colleages at the University of Wyoming, Dr. Andrew Kniss. In an October post, Dr. Kniss discussed the question "Do genetically engineered crops really increase herbicide use?" that largely discussed the data in a report on the impact of GMO crops on...
- Author: Brad Hanson
Two links to recent BBC news articles on invasive weeds.
The first one is about a weed that should be familiar to anyone who has traveled in much of the intermountain west - cheatgrass (Bromus tectorum). The BBC article entitled "Wildfires fanned by invasive grass species" is a popular press discussion of recently article by Balch et al. in the scientific journal Global Change Biology. The focus of the research and reports was to discuss the effects that this fast growing (and fast dying) weed has on fire cycles and fire severity in the western US. Very interesting!
The second one, "
- 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,...
