Source: By Mark Loux, Ohio State University Extension
Ohio State University Extension has currently started the second year of a three-year partnership of ag industry, USB, and a number of land grant universities to provide education and resources for managing herbicide site of action and mitigating herbicide resistance. This is resulting in some additional free publications for use by agronomists, growers, CCA, etc.
University of Nebraska-Lincoln greenhouse studies have confirmed a Palmer amaranth population resistant to postemergence application of atrazine and HPPD-inhibiting herbicides (Callisto, Laudis, Armezon/Impact). This is the second report (after Kansas) of a Palmer amaranth population resistant to atrazine and the HPPD group of herbicides.
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