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A new weapon for farmers: Inter-row mowing for problem weeds in row crops

Conventional farmers are facing a new level of threat from weeds due to the development of multiple sources of herbicide resistance over the past decade. They are starting to feel the pain of organic growers, who have faced a long battle against weeds that is now usually fought with frequent tillage, which has been implicated in soil degradation. A tool that does not rely on chemical control or soil disturbance has emerged from a research program at the University of Missouri. A tractor-mounted mower that can cut down weeds between crop rows can combat problem broadleaves like waterhemp and Palmer amaranth with a single mowing. The mower has caught the eyes of both conventional and organic growers. Research and development is continuing at the University of Missouri with the intent of licensing the design for commercial production. It has been generations since John Deere revolutionized agriculture with his polished steel moldboard plow and now comes a tool that allows us to save the soil that the plow laid open for damage. Disturbing soil as little as possible while maintaining environmental integrity is the path of the future for agriculture and the Mizzou inter-row mower is the tool for the task.

Presented by:
Kerry Clark, University of Missouri


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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 Ag Extension (funding opportunity no. USDA-NIFA-OP-010186), grant no. 2023-41595-41325 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture or the Extension Foundation. For more information, please visit extension.org. You can view the terms of useat extension.org/terms.

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