ISSUE 3    May 19, 2005


Mike Moechnig (pronounced Miknig) has been hired to replace Leon Wrage as the South Dakota State Universtity Extension Weed Scientist. He is native of Minnesota and did some weed science graduate work at U of WI under Dr. Chris Boerboom. He is currently finishing post-doctorate work at U of CA-Davis and will begin his duties at SDSU on Sept 1. He is looking forward to raising a family away from California.



In last week’s Pest Report it was indicated that Pursuit Plus was not registered for use on Pinto type dry bean. This was not an intended omission and BASF has since revised the label to include Pinto type dry bean. BASF has requested ND registration through Jim Gray of the ND Dept. of Ag. The label is for the states of IL, IA, MI, MN - S of Hwy #210, ND, and WI. The registration of Pursuit Plus covers the entire Crop Grouping 6 which includes all dry bean types.



Anticipating sulfentrazone (Spartan) product shortfall in sunflower in 2005, there was interest in getting a Section 18 for Valor applied as an early preplant application at least 21 days before planting and use only in no-till sunflower. It appears that with the limited amount of Valor available and almost no NDSU data to support this use, progress toward Section 18 registration was dropped. Several NDSU studies show a wide response of sunflower to Valor from no injury to near complete stand loss when applied as a preemergence application after planting. However, we have almost no data showing sunflower safety or effective residual weed control from applications made 21 to 30 days before planting sunflower.

The federal label allows most all crops to be planted 30 after application. Planting sunflower would fit this use. NDSU does not recommend, nor does the label allow planting sunflower less than 30 days after application.



Most MCPA labels have been revised to restrict use in field pea to only the Pacific NW U.S. Wilbur-Ellis markets a product called Sodium Salt of MCPA. It appears there is no geographic restriction. Use 0.5 to 1.5 pt/A to 4 to 6 inch tall field pea. This use is not listed in the 2005 ND Weed Control Guide. See label for further details.



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

1. NDSU Weed Science Web Site:

Web address is on the cover of the 2004 Weed Control Guide.
* 2005 Weed Control Guide
* 2005 Herbicide Price List
* 1978/79 and 2000 ND Weed Surveys
* Extension Weed/Herbicide Extension Publications
* Crop Production Publications
* 2005 Section 18 status
* CDMS Pesticide Label Search
* Herbicide Resistant Weed Web Site
* Weed Identification
* Other academic and UDSA weed information

2. NDSU Invasive Weed Science Web Site:

Publications, data base and other information concerning identification and control of ND noxious and invasive weeds.

3. NDSU Pesticide Training and Certification Program  

All EPA approved ND herbicide Section 18, 24c, and 2(ee) registrations have been posted on the web.

Summary of 2004 Herbicide Section 18s approved for ND:

Buckwheat - Poast (pending)
Dry bean - Reflex (pending)
Flax - Spartan (approved)

New Full Section 3 Federal Registrations or new uses:

600 crops - Aim for preplant or row middles or preharvest
Winter Wheat - Olympus for brome and quackgrass control
Clearfield wheat - Beyond herbicide
WideMatch - labeled in corn and small grains
Starane - labeled in corn

New Section 24c Registrations:

Several - See URL listed above

New 2ee labels:

Several - See URL listed above

New Supplemental herbicide labels:

Several - See URL listed above

4. Pesticide Labels

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


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 download the software from this site.


This site is where the ND Dept of Ag shows all ND pesticide registrations. One can find out if a product has been registered in ND by accessing this site.



Because the ND Weed Guide is printed in December before the new herbicide prices are released for the coming season, the prices in the 2005 edition still contain the prices for the 2004 year and do not reflect 2005 prices. For an approximate retail price listings for small quantities of herbicides refer to the NDSU Weed Science web site:

This web address is listed on the cover of the weed guide.

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.

Richard Zollinger
NDSU Extension Weed Specialist

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