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1 January 2007 Response of Pitted Morningglory (Ipomoea Lacunosa) Accessions to Chlorimuron, Fomesafen, and Glyphosate
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Abstract

Field studies were conducted in Fayetteville, AR, to determine the response of 38 pitted morningglory accessions to fomesafen, chlorimuron, and glyphosate when applied postemergence over-the-top (POT) at 9 g ai/ha, 420 g ai/ha, and 840 g ae/ha, respectively, to four-leaf, 15-cm-tall pitted morningglory. Visual control following chlorimuron application ranged from 82 to 95% 3 wk after treatment (WAT). Visual control of accessions with fomesafen ranged 34 to 84% 3 WAT. Variability in visual control following fomesafen application was documented among accessions collected from similar geographic locations in west-central and southwest Arkansas, central and southeast Louisiana, and west-central Mississippi. Glyphosate controlled pitted morningglory accessions 81 to 89% 3 WAT. Data indicate that weed management programs should be field specific where fomesafen use is intended.

Nomenclature: Chlorimuron, fomesafen, glyphosate, pitted morningglory, Ipomoea lacunosa L. IPOLA

Daniel O. Stephenson, LAWRENCE R. OLIVER, and Jason A. Bond "Response of Pitted Morningglory (Ipomoea Lacunosa) Accessions to Chlorimuron, Fomesafen, and Glyphosate," Weed Technology 21(1), 179-185, (1 January 2007). https://doi.org/10.1614/WT-06-067.1
Received: 30 March 2006; Accepted: 1 July 2006; Published: 1 January 2007
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