Journal
WEED RESEARCH
Volume 61, Issue 4, Pages 282-287Publisher
WILEY
DOI: 10.1111/wre.12480
Keywords
Bassia scoparia; critical period; fecundity; herbicide resistance; integrated weed management; kochia; Kochia scoparia; seed production; seed threshold; seedbank; weed emergence
Categories
Funding
- Agriculture and Agri-Food Canada
- Manitoba Pulse and Soybean Growers
- Manitoba Wheat and Barley Growers Association
- Western Grains Research Foundation
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The proliferation of herbicide-resistant weeds underscores the need to re-evaluate fundamental weed control objectives, with a focus on limiting weed seed return to prevent further resistance. The Critical Period for Weed Seed Control (CPWSC) targets specific phenological stages to minimize weed seed production, offering a strategic framework for effective weed management. This concept is exemplified using Bassia scoparia as a model species and provides a foundation for future research in this area.
Proliferation of herbicide-resistant weeds demands re-evaluation of fundamental weed control objectives. Yield loss mitigation remains a priority, but limiting weed seed return (WSR) to the soil seedbank is key to preventing herbicide-resistant annual weeds from multiplying. The critical period for weed seed control (CPWSC) is the period of the growing season during which weed control can minimise weed seed production. The CPWSC provides a framework to limit WSR by targeting weeds during phenological stages critical for seed development. We aim to (a) introduce the CPWSC concept, (b) provide an example using Bassia scoparia as a model species and (c) offer a framework for future research.
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