2008 North Dakota Weed Control Guide

W-253, January 2008
R. K. Zollinger, NDSU Extension Weed Specialist

2008 North Dakota Adjuvant Compendium

The listings are approximate retail prices for small quantities. Herbicide prices do not include cost of such additives as surfactants, oils, fertilizer or application costs. Prices may vary depending on area of the state, wholesaler, bulk discounts, seasonal changes, quantities purchased and particular programs the manufacturing company offers. Prices are averages based on statewide dealer survey for small quantities. Producers should consult local agricultural product suppliers for exact price of each product in their area.

Summary of new information in the 2008 Weed Control Guide:

NDSU Weed Science home page address at: www.ag.ndsu.edu/weeds - Web version of ND Weed Control Guide.
By 2010, ~90% of herbicide ais will be off patent resulting in several generic formulations. See pages 106-107.
clethodim, clopyralid, thifensulfuron, tribenuron, others.

Company changes:
Agriliance now Winfield Solutions
AGSCO now under UAP = Agrium (Canada)
Ayrsta + Microflo sold to Industrial Equity Investments (Ireland)
Cerexagri now under UPI

Rage D-Tech (FMC) - Premix of Aim & 2,4-D - apply POST in small grains and corn; preplant in soybean with planting at least 14 days after application.

Small Grains:
Everest/Pre-Pare (Arysta) - Registered preplant in wheat.

Prowl (BASF) - Registered POST in wheat - 1- to 3-leaf.

Sulfonylureas (DuPont)
- SG (Soluble Granule) formulation of several SU herbicides = Ally Extra, Agility, Harmony, Harmony Extra, and Express.
- Many generic formulations of chlorsulfuron, metsulfuron, thifensulfuron, and tribenuron available.

Agility (Dupont) = dicamba, Harmony GT, Express, and Ally.

Axial XL (Syngenta) - Adigor adjuvant included in the formulation.

Avenge (Gowan - Added back into the weed guide.

Huskie (Bayer) - premix of bromoxynil & pyrasulfatole. Labeled on wheat and barley up to flag-leaf emergence. Controls most annual broadleaf weeds, no grass control. Mix with most POST grass herbicides. Most crops can be planted the year after application.

New page for Herbicides Registered for Small Acreage Crops
(buckwheat, juneberry, lawn, millet, mint, onion, rye, sorghum, and triticale) - See page 15.

Corn:
Select Max (Valent) - For EPP application to control unwanted grasses at planting and emergence.

Acetochlor (Dow/Monsanto) - reregistration allows most all crops to be planted the following application (see label).

SureStart (Dow) - Premix of acetochlor plus Hornet applied PRE.

Laudis (tembotrione) (Bayer) - Same chemistry as Callisto and Impact. With atrazine at 0.38 lb ai/A controls most all broadleaf weeds including yellow foxtail and suppression of green foxtail. Broadleaf weed control comparable to Callisto but greater grass control. Carryover to some crops.

Halex GT (Syngenta) - Premix of Dual II Magnum & Callisto & glyphosate for POST application.

RR Corn - Weed management expanded. Tank-mix options with glyphosate included - see page 20-21.

Soybean:
Authority Assist (FMC) (Dow) - Premix of Spartan & Pursuit - registration pending.

Authority MTZ (FMC) - Premix of Spartan & metribuzin.

RR Soybean - Weed management expanded. Tank-mix options with glyphosate included - see page 26-27.

Dry bean:
Valor (FMC) - Registration pending for dry bean desiccation.

Sunflower:
Assure II / Targa (Dupont / Gowan) - Registered for use.

Spartan Advance - Premix of Spartan & glyphosate for preplant application. EPP also registered in field pea.

Express Sun sunflower (Dupont/Pioneer). Non GM sunflower. Broadleaf weeds and season-long suppression of Canada thistle.

Glyphosate - Registered for preharvest use.

Safflower:
Glyphosate - Preplant and preharvest application.

Clethodim - Registered for use.

Flax:
Assure II / Targa (Dupont / Gowan) - Reg. approved in 12/06.

Spartan 4F = Removed from Flax section.

Glyphosate:
Prices are increasing due less production of glyt-acid in China.

Several new formulations available.

Roundup PowerMax (Monsanto) will replace RU OriginalMax - has different adjuvant system to provide greater common lambsquarters control. Contains CropShield to protect RR crops.

Durango DMA and Duramax (Dow) - glyphosate formulated with dimethyl amine salt (dma). Will replace existing formulations

Emerging New Active ingredients:            Projected launch
Isoxadifen safener       Several      Corn               2006+
Laudis                         Bayer         Corn               2008
Thiencarbazone          Bayer         Corn               2009
Saflufenacil                 BASF         Corn/soybean 2010
Florasulam                  Dow/Syng  Small grains   2009
Pyroxulam                   Dow           Small grains   2009
New ai                        DuPont       Pasture/range 2010?
Pyroxasulfone             Kumiai       Wht, corn, soy, 2010
                                                      snfl, pea, others

Emerging Weed Management Traits: Projected launch
RR sugarbeet                              Monsanto          2008
Roundup Ready2Yield soybean Monsanto           2009
Liberty Link soybean                   Bayer                 2009
Optimum GAT soybean               DuPont              2009
Optimum GAT corn                     DuPont              2010
Dow Herbicide Tolerant (DHT) corn Dow             2012
DHT soybean                              Dow                   2013
Dicamba resistant soybean         Mon/U of NE     2013
SmartStax (8 GM traits)               Mon/Dow          ????
Atrazine resistant sunflower?      Kansas St U.     ????

Potential Section 18 exemptions:
None anticipated.


IR-4 Residue Studies to be Conducted in 2008:
Dry bean propaconazole - Fargo (3) Minot (2)

Sorghum nico & rimsulfuron - Fargo (2) Minot (1)

Corn metaldehyde Fargo (1)

Possible Future IR-4 Studies:
Millet thifensulfuron
Safflower sulfentrazone
Sunflower thifensulfuron (Express resistant)


Double and Triple Stack Weed Resistance Update:
Horseweed: Glyt (2000), Glyt + ALS (2003)
C. ragweed: Glyt (2006), Glyt + PPO (2006), Glyt + PPO + ALS (2006)
Waterhemp: Glyt (2005), Glyt + PPO + ALS (2006)
C. Lambsqtarters: Glyt (2006)

Quick reference information:

1. NDSU Weed Science Home Page:
http://www.ag.ndsu.edu/weeds/

2. <agdakota> list serve: Timely updates in pesticide registration and crop production information. To subscribe, send email to r.zollinger@ndsu.edu

3. U.S. registered pesticide labels:
http://www.cdms.net/manuf/manuf.asp

4. North Dakota Department of Ag registered pesticide database:
http://www.kellysolutions.com/nd/

5. North Dakota Pesticide Training and Certification Program:
http://www.ag.ndsu.nodak.edu/aginfo/pesticid/pesticid.htm

6. SAFETY AND EMERGENCY PHONE NUMBERS:
ND Poison Control Line: 800 222-1222
ND Emergency Assistance Line: 800 472-2121
Report pesticide incident to NDDA: 701 328-2232

NDSU Extension Service, North Dakota State University of Agriculture and Applied Science, and U.S. Department of Agriculture cooperating.
Duane Hauck, Director, Fargo, North Dakota. Distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914.
We offer our programs and facilities to all persons regardless of race, color, national origin, religion, sex, disability, age, Vietnam era veterans status, or sexual orientation; and are an equal opportunity employer.

20M-12-07

This publication will be made available in alternative format upon request to people with disabilities (701) 231-7881.

Continue to next page
W-253, January 2008