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PAM: a bioeconomic decision-support tool for guiding the management of Palmer amaranth

Herbicide resistance in Palmer amaranth (known as Palmer pigweed) is a serious issue in the Southern US and is spreading to several other states. Repeated use of a few herbicide mechanisms of action (MOA) without sufficient management diversity is the common cause of this resistance. A proactive resistance management strategy that integrates diverse chemical and non-chemical tools will help prevent/manage resistance and preserve the utility of available herbicide options.

This webinar provides a general overview and demonstration of a new Microsoft-Excel based decision support tool that guides informed decision making for effective management of this weed, with particular focus on soil seedbank management and profitability. Users can build their own management programs and see for themselves how effective their pigweed management program is, as well as overall economic outcomes associated with their options. This tool also predicts the likely risk of resistance for the management program built by the user.

Presenter: Muthu Bagavathiannan, Assistant Professor, weed science and agronomy, Texas A&M University

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The Extension Foundation was formed in 2006 by Extension Directors and Administrators. Today, the Foundation partners with Cooperative Extension through liaison roles and a formal plan of work with the Extension Committee on Organization and Policy (ECOP) to increase system capacity while providing programmatic services, and helping Extension programs scale and investigate new methods and models for implementing programs. The Foundation provides professional development to Cooperative Extension professionals and offers exclusive services to its members. In 2020 and 2021, the Extension Foundation has awarded 85% of its direct funding back to the Cooperative Extension System, 100% of funds are used to support Cooperative Extension initiatives. 

This technology is supported in part by New Technologies for Agriculture Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture and membership funding. Any opinions, findings, conclusions, or recommendations expressed in the content are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. For more information, please visit extension.org. You can view the terms of useat extension.org/terms.

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