- Author: Brad Hanson
I recently received an email notification about a newly identified vineyard disease called grapevine redblotch.
Although this is not really a weed science issue, I thought the symptoms might be confused with other biotic and abiotic problems (such as herbicides). So, I thought I'd share the news brochure (attached below) that Drs. Sudarshana (USDA-ARS, Davis) and Wolpert (UC Davis) put together about the disease.
Here's a link to a related article on the disease in the trade publication Wines and Vines.
Take care,
Brad
- Author: Brad Hanson
Before I go out the door for the Thanksgiving holiday weekend, I wanted to share a link to the recent Western IPM Center newsletter, The Western Front.
The October 2012 edition had a really nice writeup about the glyphosate-resistant weed workshops and IPM publications that I mentioned in my October 29 post. The author did a great job summarizing the issues, objectives, and even the IPM publications so I'll encourage you to take a look for yourself.
Click the link for more information on the
- Author: Brad Hanson
A quick post today to share a link to the recently revised "UC IPM Pest Management Guidelines for Pear" (UC ANR Publication #3455). You can download the whole document as a pdf here, or use it online at the above link.
Although there are also well-written sections on general pear pest management, as well as specific information on insects, mites, and diseases of pears, since this is the Weed Science blog, I'd better post a link directly to the Integrated Weed Management section authored...
- Author: Brad Hanson
Happy Halloween!
Today I wanted to follow up on a previous post on the phenonena of enhanced microbial degradation of the residual herbicide simazine in orchards and vineyards. In that post, I described research that we did a few years ago to address faster-than-normal degradation of simazine in citrus orchards.
The results of concurrent study done in raisin vineyards near Parlier was published in the most recent issue of the journal Weed Science. Unfortunately, that journal is not open-access but academic folks can find the article under the citation Abit, Rainbolt, Krutz,...
- Author: Brad Hanson
Last winter, I particpated in a series of seven half-day workshops in California, Oregon, and Washington on herbicide-resistant weeds. These workshops were organized by Kassim Al-Khatib from the Univeristy of California Integrated Pest Management (IPM) Program and had a special focus on glyphosate-resistant weeds in tree and vine crops.
In preparation for these workshops, we wrote a series of extension publications that I wanted to share today. The publications and resulting presentations were prepared by weed scientists from various Universities, Cooperative Extension, and USDA-ARS and included various aspects of herbicide resistance in permanent crops. Even as somone who thinks about herbicide resistance...
