| There are currently 2 different types (known as 'biotypes') of herbicide resistant weeds in Vermont. The first herbicide resistant weed reported from Vermont is Redroot Pigweed (Amaranthus retroflexus) with resistance to atrazine, reported in 1991. Local weed scientists estimate that there are 150 sites and more than 11,000 acres infested with herbicide resistant weeds in Vermont and they infest corn. The most widespread resistant weed of Vermont is Redroot Pigweed (Amaranthus retroflexus), which infests an estimated 1001-10000 acres and is found primarily in corn. Lambsquarters (Chenopodium album), with resistance to atrazine is the most recently discovered (1991) new type of resistant weed in Vermont. |
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This is a resource page to assist you in
managing herbicide-resistant weeds in Vermont . If you have any questions regarding herbicide-resistant
weeds in Vermont 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 Vermont 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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Redroot Pigweed (Amaranthus retroflexus) is the most widespread resistant weed of Vermont