- Posted By: Gale Perez
- Written by: Posted by David Low, The Weed's News; by Bob Egelko, The Chronicle
[The Chronicle 07 jan, 2012 by Bob Egelko] -- A federal U.S. judge has upheld the government's decision to let the nation's alfalfa growers plant the genetically engineered, herbicide-resistant strain manufactured by Monsanto Co., saying the alleged risk of contaminating other crops does not require regulators to impose buffer zones. The U.S. Department of Agriculture approved the use of Roundup Ready alfalfa - so named because it is designed to withstand Monsanto's Roundup herbicide - in January 2011, ending a nationwide ban that another judge had imposed in March 2007. The action was challenged by a group of alfalfa farmers who said they feared that the Monsanto product, spread by winds and bees, would pollinate their crops and take...
- Author: Brad Hanson
Just a quick plug for the 64th Annual California Weed Science Society Conference in Santa Barbara next week (January 23-25th).
A conference flyer and finalized agenda is attached. This is always an excellent way to get updated on weed science issues in the state. It is also a great way to keep up on your DPR continuing education hours (19.5 hr including 4 hr of laws and regulations!).
The program includes sessions on:
Weed School: Environmental Fate of Herbicides
General Session : The Value of Weed Control: What's it all Worth?
Breakout sessions:
Agronomic Crops
Aquatic...
- Posted By: Wendy West
- Written by: Wendy West, UC Cooperative Extension-Central Sierra and Garrett Dickman, Yosemite National Park
As wildland weed management and eradication projects fall to the economic “hatchet”, one vital program continues as a standout---preventing the introduction and spread of invasive weeds can yield a lot of bang for the buck!
Invasive weed seeds and other reproductive parts are often moved to new locations via: imported gravel and fill dirt; vehicles and equipment; or in erosion control materials. Treating weeds over a large area is expensive and often impossible, so land managers can look to weed prevention as a cost-effective...
- Author: Clyde Elmore, Extension Weed Specialist (Emeritus)
- Posted By: Gale Perez
We have all heard that turf grass is competitive to weeds and other plants in the landscape. There are several turf grass types grown in California. In southern California, Bermuda grass is the more common planting though Turf-type tall fesc ue is also used as well as other species to a lesser extent. Smooth and large crabgrass are the most prevalent summer annual grass weeds found in turfgrass in California. Can we devise systems using turf type, renovation (planting) time to establish a competitive, cool season, tall fescue turf and control crabgrass?
Several years ago with graduate student J. Graham Davis, and current farm advisor in Napa County, John Roncoroni, we developed experiments to study this concept. We chose...
- Author: Brad Hanson
I was forwarded a question recently about rotating herbicide mode of actions for resistance management in vineyards and realized that the information is not always particularly easy to find. We are planning to include site of action information in the next update of the Herbicide Susceptibility Chart; however, it is not available on the current version (http://info.ucanr.org/weed_sept/).
In the meantime, I updated the T&V herbicide registration chart from a few weeks ago with herbicide site of action groups according to the Herbicide Resistance Action Committee (letter/number) and Weed Science Society of America-WSSA (number) systems. There is still some debate about the...