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1 July 2008 Yellow Nutsedge (Cyperus Esculentus) Control and Peanut Tolerance to S-Metolachlor and Diclosulam Combinations
W James Grichar, Peter A. Dotray, Todd A. Baughman
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Abstract

Field studies were conducted in different peanut-growing areas of Texas during the 1999 through 2001 growing seasons to evaluate yellow nutsedge control and peanut tolerance to diclosulam alone applied PRE, S-metolachlor alone applied POST, or diclosulam applied PRE followed by (fb) S-metolachlor applied POST. Yellow nutsedge control was > 80% at five of six locations when diclosulam at 0.018 or 0.026 kg/ha applied PRE was fb S-metolachlor applied POST at 0.56, 1.12, or 1.46 kg ai/ha. Peanut stunting was noted with diclosulam at the High Plains locations but not at the Rolling Plains or south Texas locations. This stunting with diclosulam was due to a combination of peanut variety and high soil pH. Peanut yield was not always increased where yellow nutsedge was controlled.

Nomenclature: Diclosulam, N-(2,6-dichlorophenyl)-5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidine-2-sulfonamide; S-metolachlor; yellow nutsedge, Cyperus esculentus L. CYPES; peanut, Arachis hypogaea L., ‘Flavor Runner 458’, ‘Florunner’, ‘Georgia Green’

W James Grichar, Peter A. Dotray, and Todd A. Baughman "Yellow Nutsedge (Cyperus Esculentus) Control and Peanut Tolerance to S-Metolachlor and Diclosulam Combinations," Weed Technology 22(3), 442-447, (1 July 2008). https://doi.org/10.1614/WT-07-156.1
Received: 25 October 2007; Accepted: 1 April 2008; Published: 1 July 2008
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KEYWORDS
herbicide combinations
peanut injury
peanut yield
Weed competition
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