UC Weed Science (weed control, management, ecology, and minutia)

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.

Marestail (Conyza canadensis; aka horseweed) and hairy fleabane (C. bonariensis; aka flax leaf fleabane) are serious weed problems in vineyards in Monterey County.

Over the past few years, herbicides with the active ingredient glufosinate (Rely, Rely 200, Rely 280) have become very important in California tree nut orchards and grape vineyards.

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.

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.