ISSUE 14    August 4, 2005


NDSU does very limited research on weed management in trees and forestry but many questions come in during the years. One resource is page 62 in the weed guide which summarizes labeled products. Another resource is NDSU Extension Bulletin W-1097, Weed Control in Tree Plantings which was revised and reprinted in June 2004. This publication goes into more depth describing best herbicide uses and susceptibility of grass, broadleaf, and perennial weeds to herbicides. The publication also list many woody species and which herbicides are registered for use.

I also discovered that the Wisconsin DNR developed a series of tables that show those herbicides approved for forestry uses. Previously, this was published as a forestry fact. This year, they are moving to a completely electronic version that is available from the DNR Division of Forestry. The link to this site is:



No doubt the web site  has increased acessability to the most recent and accuracy pesticide label. It has pesticide labels from nearly all the manufacturer and distributors.

Bookmarking  will bring you to the page where pesticide labels can be searched by name or to check the products that are available from a specific company.

A reason for checking labels on-line is that you can quickly search the label for the information you are seeking. If reading a label, it can take several minutes to find or confirm specific information (sometimes I know because I have read it before). CDMS has an option to speed up the time it takes to access specific information. The following are steps.

  1. Type in the product name and click ‘Search’.
  2. Select the icon of the product you are seeking.
  3. Several pdf files will be listed for most products. The first file listed is the main label. Below are supplemental labels for specific uses. Select the file you desire.
  4. Here is the neat part. Click on the ‘binocular’ icon in the tool bar that is right above the label. It should be the 4th from the left. This opens up the search feature.
  5. Just enter the word you are looking for and a list of locations appears in a ‘Results’ box.
  6. Click on the underlined word and that word will be highlighted in the label.

The following are words that are frequently used in searches:

  • ‘Rotation" - to find a rotational restriction.
  • ‘Stage’ - to find crop growth stages.
  • ‘Wind’ - to find wind speed restrictions.
  • ‘Rain’ - to find rainfast period
  • Actual crop name - to see if the product is even labeled on that crop.
  • Give it a try.


    Telemarketers are out in full force selling high priced herbicides that contain very little active ingredient, and claiming these herbicides can do unbelievable things. We need your help to shut these people down. The ND Dept of Ag has indicated that with proper documentation of phone call conversation they can take action against companies that use this approach to rip_off growers of their hard earned money.

    For example, reports have been made of a chemical company selling a product containing 2,4-D and bromacil (Hyvar) at a total concentration of 2% ai for $90/gal + $21 freight. By my calculations, the grower is spending the equivalent of: $3,961.76 for a gallon of 2,4-D LV4 and $2,610.33 for a gallon of Hyvar X-L.

    In North Dakota, an average price for 2,4_D LV4 is $14 per gallon and $55 per gallon for Hyvar X-L (2 lb/gal). They are selling this herbicide for 47 times and 283 times the cost than if the grower were to buy the 2,4-D LV4 and Hyvar X-L from his dealer.

    Absurd claims are made with these products. For instance, one application of a product called Triple Threat (three phenoxy herbicides at a total of 1 lb/gal) was reported by the telemarketer to control leafy spurge for 5 years. Do you think the telemarketer would sign his name to the guaranty _ NOT!

    Get the following information during the phone call - if you can:

    1. Name of product and telemarketer.
    2. EPA registration number of product.
    3. Formulation and concentration of active ingredients.
    4. Name, address, and phone number of company.
    5. All claims made by telemarketer.

    Any other information that would be useful to fry these vermin ("the most pernicious race of little odious vermin that nature ever suffered to crawl upon the face of this earth (Swift)).

    We need your help to rid our state of this pillage. Please document the call and report to the ND Dept of Ag at 701 328-1501. When calling the Dept of Ag ask if the product is registered in the state. If it is not registered, it is a good indication it is ‘scam brew’.

    Richard Zollinger
    NDSU Extension Weed Specialist

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