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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Production Systems Research » Research » Publications at this Location » Publication #369459

Research Project: Biology and Management of Herbicide-Resistant Weeds

Location: Crop Production Systems Research

Title: Herbicide resistance in weed populations of Mississippi: A Review

item Nandula, Vijay

Submitted to: Journal of the Mississippi Academy of Sciences
Publication Type: Review Article
Publication Acceptance Date: 5/20/2020
Publication Date: 7/20/2020
Citation: Nandula, V.K. 2020. Herbicide resistance in weed populations of Mississippi: A Review. Journal of the Mississippi Academy of Sciences. 65(3).

Interpretive Summary:

Technical Abstract: Since the mid-twentieth century, herbicides rapidly replaced all other means of weed management. Overreliance on ‘herbicide-only’ weed control strategies hastened evolution of HR weed species. Glyphosate-resistant (GR) crop technology revolutionized weed management in agronomic crops, but GR weeds, led by Palmer amaranth, severely reduced returns from various cropping systems and affected the bottom line of growers across the world. An additional problem was the lack of commercialization of a new herbicide mode of action since the 1990s. Auxinic herbicide resistant crops (HRCs) offer a short-term alternative for management of GR Palmer amaranth and other weed species. New HRCs stacked with multiple herbicide resistance traits and at least two new herbicide modes of action expected to be available in the mid-2020s provide new chemical options for weed management in row crops in the next decade. This article reviews the chronological confirmation and reporting of HR weeds in Mississippi and outlines current and future weed management tools available to growers of Mississippi.