NDSU Crop and Pest Report
Weeds


ISSUE 2  May 8, 2003

 

WEED ID AND WEED CONTROL WEB SITES

The following web sites are excellent sources of weed ID, weed control, and herbicide information.

1.  NDSU Weed Science Web Site:

http://www.ag.ndsu.nodak.edu/weeds

Address is on the cover of the 2002 Weed Control Guide.

2. NDSU Pesticide Training and Certification Program

http://www.ag.ndsu.nodak.edu/aginfo/pesticid/pesticid.htm

    Many links to important information.

3. EPA - Office of Pesticide Program

http://www.epa.gov/opprd001/workplan/

    Latest progress in registration of all pesticides.

4. USDA Plant Photo Library

http://www.usda.gov/oc/photo/opclibra.htm

    Over 20,000 plant photos

5. IR-4 Web Site

http://aesop.rutgers.edu/~ir4/

    Registration status of pesticide on minor crops through the IR-4 program

6. Pesticide Labels

http://www.cdms.net/manuf/manuf.asp

    A free web site with all current pesticide and adjuvant labels. Also contains state, 2ee, and supplemental labels or

http://www.greenbook.net/

    Known in weed science circles as the "Green Bible" or "Blue Bible" contains all labels for most all pesticides currently labeled. Free service allows search and printing of all labels. Must have Adobe Acrobat Reader but can down the software from this site.

7. Iowa State Weed ID

http://www.weeds.iastate.edu/weed_id/weedid.htm

8. Common weed seedlings of Michigan

http://www.msue.msu.edu/msue/iac/e1363/e1363.htm

9. Weed Science Society of America Photo Herbarium

http://www.wssa.net/

 

2002 HERBICIDE UPDATE - Part 1

Generic distributors:

Many registered products are coming off patent and are being marketed by many other companies worldwide. Many of these products will be sold in the U.S. and North Dakota under a variety of names. Examples of this are 2,4-D, atrazine, dicamba, bentazon, trifluralin, and glyphosate. A result of this will be that reference to these products in the weed guide will be by common name. Other products that will be available by large distributor companies are Ally, Select, and Spartan (not off patent). Below are names of some but not all companies that have sales support people in North Dakota. Cities or countries in parenthesis refer to place of origin or U.S. headquarters: Agriliance (St. Paul), AgValue (California), Albaugh (IA), Arvesta (CA), Amvac (CA), Cheminova (NJ), Farmsaver.com (WA), Gharda (Origin India), Gowan (AR), Griffin (GA), Kumiai (Japan), Makhteshim-Agan (Origin Israel, U.S. headquarters NY), Micro Flo (TN), Nufarm (IL), Rosens, Tenkoz (GA), United Phosphorus (NJ), West Central (Subsidiary of Van Diest, IA), Wilbur-Ellis (CA).

Achieve (Syngenta)

Mode of action: ACCase inhibitor
a.i.: tralkoxydim
Crops: Wheat, durum, and barley.
Comments: 40DG formulation is being phased out and replaced with 3,33 EC liquid formulation. Rate of EC is 2.9 fl oz/A.

AE 1715 (Aventis)

Mode of action: ALS inhibitor
a.i.:
iodosulfuron
Crops: Potential use on small grains.
Comments: Broadleaf weed control. Tank-mixed with mefenpyr-diethyl enhances metabolism and detoxification in cereals but not in weeds.

Aim (FMC)

Mode of action: PPO inhibitor
a.i.:
carfentrazone
Crops: Small grains, barley, oat , corn.
Comments: Liquid 2EW formulation available. Labeled for preplant burndown and fallow prior to planting field corn, soybean and wheat with no planting interval restrictions since these crops are labeled and have established tolerances. Aim can also be used on fallow which includes CRP but do not use if the legume has emerged. Aim + Roundup enhances the speed of activity and adds control of susceptible weeds kochia, lambsquarters and pigweed. May provide partial control of wild buckwheat and Russian thistle. Crops without a tolerance must be planted 30 days or more after application.

Beyond (BASF)

Mode of action: ALS inhibitor
a.i.:
imazamox
Crops: Clearfield wheat
Comments: Clearfield winter wheat available for 2002 but Clearfield winter wheat is still under development and will not be available until 2005 or 2006.

Dakota (UAP)

Mode of action: ACCase inhibitor
a.i.: fenoxaprop-P + MCPA
Crops: Wheat.
Comments: Discontinued by Bayer. All remaining product in inventory will be sold by UAP until sold out.

Everest (Bayer)

Mode of action: ALS inhibitor
a.i.:
flucarbazone
Crops: Wheat
Comments: 2ee label issued allowing 0.4 oz rate to be used for green foxtail control west of Hwy 281 in ND. I wonder if it will work othe east side of 281?

Metgard (Makhieshim-Agan of N. Am.)

Mode of action: ALS inhibitor
a.i.: metsulfuron (60DF)
Crops: Same as Ally
Comments: Metsulfuron is now off patent allowing other sources to be sold in the U.S under several different trade names.

Olympus (Bayer) - 70DF

Mode of action: ALS Inhibitor
a.i.:
propoxycarbozone
Crops: Wheat, including durum and winter.
Comments: In development in HRS wheat and durum - NOT BARLEY - for control of annual bromes and cheat grass.

SU herbicides (DuPont)

Mode of action: ALS inhibitor
a.i.: several
Crops: several
Comments: New XP (extruded paste) formulation - more soluble with tankmixes and resuspend better.

Tiller (Bayer)

Mode of action: ACCase inhibitor
a.i.: fenoxaprop-P + 2,4-D + MCPA
Crops: Wheat.
Comments: Discontinued

Richard Zollinger
NDSU Extension Weed Specialist
rzolling@ndsuext.nodak.edu

 


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