Wines & Vines Home
   
 
Welcome Guest
LOGIN |  CREATE ACCOUNT
 
ADVERTISEMENT
 
 
 
12.31.2012  
 

Herbicide Scarcity Expected in California

Weed specialist reports that active ingredient in Rely 280 could be in short supply until 2014

 
by Paul Franson
 
 
weed control california
 
Davis, Calif.—As if it’s not tough enough for grapegrowers to keep up with the latest insects and other pests, they may have trouble finding an important herbicide this year. Brad Hanson, cooperative extension weed specialist for the University of California, Davis, Department of Plant Sciences, reports that glufosinate (Rely 280) is going to be in very short supply in California during 2013 and possibly into 2014.

“Over the past few years, herbicides with the active ingredient glufosinate have become very important in California grape vineyards. Growers and pest control advisors should plan ahead if you are not already doing so,” Hanson warns.

Glyphosate vs. glufosinate
He stated that though the names are similar, glufosinate works quite differently than another amino acid inhibitor, glyphosate (the active ingredient in Roundup and others, which is classed as a Group 9 herbicide.

Glufosinate is classified as a Group 10 (or Group B) herbicide, which inhibits an enzyme important in the production of the amino acids glutamine in plants. A very technical explanation of the differences is available here.

In simpler terms, glyphosate (Roundup, Durango, Honcho) inhibits EPSP synthase (EPSPS) enzyme.

Glufosinate (Rely, Rely 200, Rely 280) inhibits glutamine synthetase enzyme.

Additionally, glyphosate translocates easily through the plant, while glufosinate doesn’t, and it’s critical to provide good coverage.

However, resistance to glyphosate has been reported in California among such weeds as ryegrass, horseweed (mare's tail), junglerice and hairy fleabane, while no resistance to glufosinate has been reported in California so far, making it an alternative method of weed control.

Hanson noted that because it has a different mode of action than glyphosate, glufosinate has become very important in California vineyards, especially those struggling with glyphosate-resistant weeds.

Demand for glufosinate
Hanson said that the scarcity of glufosinate in California seems to caused by demand for use with other crops elsewhere.

“The AI (active ingredient) in glufosinate in Rely 280 is the same AI used in Ignite, Liberty, Basta and Finale herbicides used in crops with the LibertyLink genetically-modified trait as the only nonselective alternative to glyphosate-tolerant systems with crops such as cotton, corn, canola, and soybean.

“As well as being much larger markets (several hundred million acres) than California trees and vines, some of these cropping systems have much more serious glyphosate-resistant weed problems like glyphosate-resistant Palmer amaranth or waterhemp than we do here,” Hanson observed.

He stated that until production of the active ingredient can be increased to meet the national demand, most glufosinate will go to other states in 2013 and possibly 2014.

To deal with the problem, Hanson reminds growers to do the same thing they should be doing every year: “Plan ahead; scout fields; rotate herbicide modes of action, etc. This year, particularly since it's looking like a good rain year, would be a good time to investigate some of the pre-emergent herbicides available.

He added that another glufosinate product, Reckon 280SL from Solara, may be available to some extent as an alternative in California.

Read more at plantsciences.ucdavis.edu.

SHARE »
Close
 
Currently no comments posted for this article.
 
CURRENT NEWS INDEX »


 
Wines & Vines Home
 
866.453.9701 | 415.453.9700 | Fax: 415.453.2517
65 Mitchell Blvd., Ste. A San Rafael, CA 94903
info@winesandvines.com
Wine Industry Metrics
 
Off-Premise Sales » Month   12 Months  
June 2014 $562 million
5%
$7,549 million
6%
June 2013 $535 million $7,094 million
     
Direct-to-Consumer Shipments » Month   12 Months  
June 2014 $87 million
17%
$1,669 million
11%
June 2013 $74 million $1,510 million
     
Winery Job Index » Month   12 Months  
June 2014 300
34%
220
21%
June 2013 224 182
     
 
MORE » Released on 07.15.2014
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Wines & Vines
Packaging Conference
 
Learn More »
 
 

Practical Winery & Vineyard Library
 
Search the PWV archive »
 
 

Direct To Consumer
Wine Shipping Report
2014
 
Download full report »
 
 

CALENDAR
  • July 24
     
    Fresno Food Expo
     
  • July 24-27
     
    Taste our Terroir
     
  • July 25-27
     
    International Pinot Noir Celebration
     
  • July 26
     
    Introduction to Wine Analysis
     
  • MORE »
 

READER COMMENTS
 
Article: Wineries May Lose Internet Domain Dispute »
 
All these arguments could be levied by any industry associated with any gTLD, new or...
Reader: Doug Barnett
 
Article: Wineries May Lose Internet Domain Dispute »
 
Do brands get hijacked now? Even though .wine does not yet exist, are there false...
Reader: Larry Chandler
 
Article: Resistant Weeds Threaten Vineyards »
 
Roundup is not benign. It does not always break down in a day or two...
Reader: Robert Rex
 
Article: Resistant Weeds Threaten Vineyards »
 
Mitigating water use in the vineyard in the first place is also an applicable tactic....
Reader: Guest
 
Article: Resistant Weeds Threaten Vineyards »
 
Having managed vineyards that have used both approaches, I would say that a diverse approach...
Reader: Guest
 
 


Directory/Buyer's Guide — Your Wine Industry Marketplace
 
 
WINERY SEARCH
 
 
Advanced Search »
SUPPLIER SEARCH
   by Product
 by Company Name or Brand
 
Browse by Category »
2014 Directory/Buyer's Guide
The Wines & Vines Directory and Buyer's Guide
 
 
EXPANDED ONLINE SEARCH INCLUDED WITH PURCHASE
 
ORDER NOW »
 
LEARN MORE »
 
 
Wines & Vines Magazine
 
 
LEARN MORE »
 
SUBSCRIBE »
 
Digital Edition Now Available!
Wines & Vines Digital Edition Now Available
 
LEARN MORE »
 
ORDER NOW »
 
 
The Wines & Vines Online Marketing System
 
The Industry Standard winery marketing application
 
FREE LIVE DEMO »
 
VIEW VIDEO »
 
 
 
 
Latest Job Listings
 Tasting Room Wine Educ...
 Rutherford, CA
DTC, Tasting Room and Retai
 Demand And Inventory C...
 Toronto, ON
General Administration and
 Sales Representative
 Orange, Putnam & Duchess Counties, NY
Sales and Marketing
 Harvest Intern
 Clearlake Oaks, CA
Winemaking and Production
 Harvest Position
 Newberg, OR
Winemaking and Production
 Harvest Intern
 St. Helena, CA
Winemaking and Production
 Lab Intern - 2014 Harv...
 Kenwood, CA
Winemaking and Production
 Harvest Interns
 San Martin, CA
Winemaking and Production
 Sales Representative
 Western Massachusetts, MA
Sales and Marketing
 New York Metro Sales R...
 New York, NY
Sales and Marketing
 
More Job Listings >>
Follow Us On:
 
 





Home  |  About Us  |  Editors  |  Subscribe  |  Print Edition  |  Digital Edition

Advertise  |  Site Map  |  Contact Us  |  Privacy Policy
 
 
Copyright © 2001-2014 by Wine Communications Group, Inc. All Rights Reserved.
No material may be reproduced without written permission of the Publisher.
Wines&Vines does not assume any responsibility for any unsolicited manuscripts or materials.