| There are currently 2 different types (known as 'biotypes') of herbicide resistant weeds in South Dakota. The first herbicide resistant weed reported from South Dakota is Kochia (Kochia scoparia) with resistance to chlorsulfuron, reported in 1988. Local weed scientists estimate that there are 750 sites and more than 5,800 acres infested with herbicide resistant weeds in South Dakota and they infest cropland, and wheat. The most widespread resistant weed of South Dakota is Kochia (Kochia scoparia), which infests an estimated 1001-10000 acres and is found primarily in cropland, and wheat. Common Sunflower (Helianthus annuus), with resistance to imazethapyr is the most recently discovered (1996) new type of resistant weed in South Dakota. |
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This is a resource page to assist you in
managing herbicide-resistant weeds in South Dakota . If you have any questions regarding herbicide-resistant
weeds in South Dakota please contact an
expert in your area. If you have encountered a computer related error on the site then contact
support@weedscience.org. If you are a weed scientist wanting to add or correct information on this page then please contact
research@weedscience.org
or add the
information directly.
Scroll down this page to view tables on
herbicide resistant weeds in South Dakota and its adjacent states as well as a list of articles about
herbicide resistant weeds in your region. Click on the links within
the table to view a case of resistance in more detail.
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Kochia (Kochia scoparia) is the most widespread resistant weed of South Dakota