- Author: Brad Hanson
A couple years ago, I posted some statistics on the tree, vine, and berry acreage in California because I find that kind of thing interesting and thought others might too. The bad news is that the book chapter revision that I originally compiled those data for is still not done; however the good news (?) is that I updated those T&V acreage data and I still find them interesting (my two-year revision of that book chapter, somewhat less interesting...).
In the 2011 crop season, the two largest acreage crop groups were tree nuts and grapes. Tree nuts included about 760,000 acres of almond, 245,000 acres of walnut, and 153,000 acres of...
- Author: Brad Hanson
Today, instead of posting something about weed control and herbicide resistance in orchards and vineyards, I thought I'd go out on a limb and discuss weed management and herbicide resistance in... alfalfa! (Yes, it gets a little wild around the holidays at UC Weed Science...)
Anyway, while working on some articles for an upcoming volume of the California Weed Science Society Journal (CWSSJ), I was reminded of a really nice UCANR publication "Avoiding Weed Shifts and Weed Resistance in Roundup Ready Alfalfa Systems" by S....
- Author: Brad Hanson
Following up on my post last week about T&V herbicide changes, today I want to focus on hot-off-the-presses information about Alion (active ingredient = indaziflam) manufactured by Bayer CropScience.
Alion herbicide, which was labeled in California tree nuts, citrus, stone fruit and pome fruit was just received a supplemental label for use in grapes. For grapes there is not a range of use rates like in orchards - only 5 fl oz of product per acre (0.065 lb ai/A) is registered and only one application per 12...
- Author: Mick Canevari
- Author: Brent Holtz
- Posted by: Brad Hanson
Mick Canevari, Emeritus Farm Advisor and Brent Holtz, Farm Advisor, County Director
Weeds have a tremendous capacity to spread within an orchard. The first line of defense is identifying the weeds you need to control, and selecting the best herbicides or cultural practices to control those weeds. If you use the same herbicide(s) each year, a shift to tolerant weed species will ultimately take over and a loss of herbicide effectiveness will occur. Alternating products with different modes of action at least every couple years will improve results and insure herbicides long term viability. The UCIPM web site has charts that show which weeds are controlled...
- Author: Gale Perez
Below is a link to the Nov. 2012 UCCE San Joaquin County newsletter Field Notes. Page 8 has an article by Mick Canevari (Emeritus Farm Advisor) and Brent Holtz (Farm Advisor, County Director) on dormant weed control in tree nut crops.
http://cesanjoaquin.ucanr.edu/newsletters/Field_Notes_Newsletter44986.pdf