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1 January 2008 Water Management and Chemical Control of Red Rice (Oryza punctata) in Water-Seeded Imidazolinone-Resistant Rice
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Abstract

A study was conducted to test the effect of water clarity, as related to water seeding system, on herbicide efficacy in water-seeded imidazolinone-resistant rice production. Red rice control was 88 to 89% when 140 g/ha imazethapyr was applied in a single application immediately prior to permanent flood in the clear-water seeding system. All herbicide applications in either clear- and muddy-water systems controlled red rice 90 to 95%. The benefits of reducing soil erosion and surface water contamination from muddy-water discharge at seedling establishment can be obtained in a clear-water system without experiencing a decrease in weed control or rice yield.

Nomenclature: Imazethapyr, red rice, Oryza punctata Kotchy ex. Steud., rice, Oryza sativa L

Christopher T. Leon, Eric P. Webster, Sunny L. Bottoms, and David C. Blouin "Water Management and Chemical Control of Red Rice (Oryza punctata) in Water-Seeded Imidazolinone-Resistant Rice," Weed Technology 22(1), 132-135, (1 January 2008). https://doi.org/10.1614/WT-07-018.1
Received: 7 February 2007; Accepted: 1 October 2007; Published: 1 January 2008
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