- Author: Rob Wilson
Happy New Year! It’s too cold in Tulelake for field work, so I’m busy summarizing 2013 research results. Today I posted a progress report on the Intermountain Research and Extension Center (IREC) website summarizing results for our 2013 onion weed control research. The study was conducted at IREC to evaluate rates of DCPA (Dacthal) alone and combined with pendamethalin (Prowl H20) applied at loop stage for control of kochia in onions grown on silty clay soil with high organic matter. Sulfentrazone (Zeus), an unregistered herbicide in onions, was tested at various rates as a preemergence and postemergence herbicide on the same soil type. Prowl H20 application timing was also evaluated by comparing applications...
- Author: Brad Hanson
Earlier this year, Lynn posted an explanation of herbicide modes of action and what that means for herbicide resistance management in orchards and vineyards.
I thought to myself "Self, we should put this in a table so it would be easy to understand". Then I remembered that we actually did this already in one of the four glyphosate resistance publications that I mentioned in an August posting.
Here's an excerpted table from ANR Publication 8501 "Preventing and Managing Glyphosate-Resistant Weeds in...
- Author: Brad Hanson
A followup today on a post from last October about a series of glyphosate-resistant weed extension publications that were "about to be finalized". These four paper finally wound their way through the review and publication process and were posted on the UC ANR Catalog last week.
Brad
Selection pressure, shifting populations, and herbicide resistance and tolerance. Hanson, B., A. Fisher, A. Shrestha, M. Jasieniuk, E. Peachey, R. Boydston, T. Miller, K. Al-Khatib. 2013. University of California, Division of...
- Author: Brad Hanson
The newest issue of the journal "California Agriculture" (April-June 2013) published by the University of California and UC Division of Agriculture and Natural Resources just came out and has two articles written by UC weed researchers
Check out the whole issue here or the specific articles at the links below.
For switchgrass cultivated as biofuel in California, invasiveness limited by several steps
by Joseph M. DiTomaso, Jacob N....
- Author: Brad Hanson
I wanted to share a link today to a paper published by CAST, the Council for Agricultural Science and Technology. This paper, entitled "Herbicide-resistant weeds threaten soil conservation gains: finding a balance for soil and farm sustainablity", was released about a year ago and addresses one of the less obvious issues resistance imposes - soil erosion. This paper can be viewed or downloaded (free!) at the link above.
The development and adoption of effective postemergence...