| There are currently 2 different types (known as 'biotypes') of herbicide resistant weeds in Wyoming. The first herbicide resistant weed reported from Wyoming is Kochia (Kochia scoparia) with resistance to atrazine, reported in 1984. Local weed scientists estimate that there are 30 sites and more than 6,300 acres infested with herbicide resistant weeds in Wyoming and they infest corn, and wheat. The most widespread resistant weed of Wyoming is Kochia (Kochia scoparia), which infests an estimated 1001-10000 acres and is found primarily in corn. Kochia (Kochia scoparia), with resistance to metsulfuron-methyl is the most recently discovered (1996) new type of resistant weed in Wyoming. |
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This is a resource page to assist you in
managing herbicide-resistant weeds in Wyoming . If you have any questions regarding herbicide-resistant
weeds in Wyoming 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 Wyoming 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 Wyoming