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Yellow Nutsedge (Cyperus Esculentus) Control and Peanut Tolerance to S-Metolachlor and Diclosulam Combinations

Published online by Cambridge University Press:  20 January 2017

W. James Grichar ,
Peter A. Dotray  and
Todd A. Baughman
W. James Grichar*
Affiliation:
Texas Agricultural Experiment Station, Beeville, TX 78102-9410
Peter A. Dotray
Affiliation:
Texas Agricultural Experiment Station, Lubbock, TX 79403
Todd A. Baughman
Affiliation:
Texas Cooperative Extension, Vernon, TX 76384
*
Corresponding author's E-mail: w-grichar@tamu.edu
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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.

Keywords

Diclosulam, N-(2,6-dichlorophenyl)-5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidine-2-sulfonamideS-metolachloryellow nutsedge, Cyperus esculentus L. CYPESpeanut, Arachis hypogaea L., ‘Flavor Runner 458’, ‘Florunner’, ‘Georgia Green’Herbicide combinationspeanut injurypeanut yieldweed competition
Type
Weed Management — Major Crops
Information
Weed Technology , Volume 22 , Issue 3 , September 2008 , pp. 442 - 447
Copyright
Copyright © Weed Science Society of America 

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