- Author: Brad Hanson
I am a Cooperative Extension Weed Specialist at UC Davis and decided to start this blog as a bit of an extension experiment. Technology changes have given us new opportunities to share knowledge and I thought I’d join in the fray – we’ll see where it leads!
Some people may not know what a CE Specialist does (I wasn’t either before becoming familiar with the UC system). In my version of the job, I conduct applied research in weed management and ecology and extend this information to farmers and other folks in production agriculture. In many other University systems, I would be a Professor with a Research and Extension appointment (I do not have a teaching appointment).
My research program currently focuses on control...
- Author: Brad Hanson
*This was an article that Doug Munier and I put together and tweaked for a couple orchard crop newsletters in summer/fall 2010. I thought I'd repost it here for posterity... Brad
Controlling Glyphosate-Resistant Weeds in Orchards with Rely:
Understanding the Issue and Managing the Solutions
Brad Hanson, UC Weed Extension Specialist, Davis
Doug Munier, UC Farm Advisor, Glenn, Butte, and Tehama Counties
By now, many tree fruit and nut producers in the Central Valley are familiar with glyphosate-resistant weed species. In the north Sacramento Valley, glyphosate resistant ryegrass is...
- Author: Brad Hanson
On November 9, weed biology and management information will be presented at the Salinas Valley Weed School 2010 (contact: Richard Smith).
For more information check the calendar section at the UC Cooperative Extension—Monterey County website. http://cemonterey.ucdavis.edu/ Continuing education...
- Author: Brad Hanson
If you’ve ever taken target practice, you probably know that accuracy and precision are not necessarily the same things – a rifle that always shoots low and to the left of the bull’s-eye is precise but is not accurate. The same idea holds true for herbicide applications. Because the winter/spring weed control season is upon us, it’s time to think about ensuring that spray rigs and operators are set up to make precise and accurate applications. We want to make sure that we are applying pesticides on target and at the right rate (accuracy) and that our application in every pass or field is the same as the last (precision) in order to get good weed control and minimize off-target movement.
The most common causes of poor herbicide...
- Author: Brad Hanson
Recently I was reminded that there is no more important fundamental to weed control than being able to identify your weed problem.
This summer, I moved to a different house and have slowly been working on little projects that arise. One of these has been figuring out what weed problems I bought along with the house – in my case, this has (so far) turned out to be creeping woodsorell (Oxalis corniculata) in my lawn areas and Bermuda buttercup (Oxalis pes-caprae) almost everywhere else (beds, garden, potted plants)! I’ll save my trials and tribulations with Oxalis management for another day; however, UC-IPM has a nice pest management guideline on Oxalis authored by LeStrange, Elmore, and Cudney here:
