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Flumioxazin Preplant or POST-Directed Application Timing Followed by Irrigation at Emergence or After POST-Directed Spray Treatment Does Not Influence Cotton Yield

Published online by Cambridge University Press:  20 January 2017

Andrew J. Price ,
John W. Wilcut  and
John R. Cranmer
Andrew J. Price*
Affiliation:
National Soil Dynamics Laboratory, Agriculture Research Service, United States Department of Agriculture, 411 South Donahue Drive, Auburn, AL 36832
John W. Wilcut
Affiliation:
National Soil Dynamics Laboratory, Agriculture Research Service, United States Department of Agriculture, 411 South Donahue Drive, Auburn, AL 36832
John R. Cranmer
Affiliation:
National Soil Dynamics Laboratory, Agriculture Research Service, United States Department of Agriculture, 411 South Donahue Drive, Auburn, AL 36832
*
Corresponding author's E-mail: [email protected]
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Abstract

Three experiments were conducted in Lewiston, NC, from 1999 through 2002 to evaluate the influence of various application timings of flumioxazin preplant (PP) and postemergence-directed spray (PDS) on cotton injury. In experiment 1, flumioxazin was evaluated in a reduced-tillage system at 71, 105, or 140 g ai/ha in mixture with glyphosate, applied at 28, 14, or 7 d before planting (DBP), followed by irrigation at cotton emergence. Flumioxazin applied PP at any rate and irrigated at emergence injured cotton less than 7% at 2 wk after emergence (WAE) and less than 6% 5 WAE. In experiment 2, flumioxazin was evaluated in a conventional-tillage system at 71 or 105 g/ha as a PDS treatment applied to dry soil, wet soil, and dry soil irrigated immediately after application when cotton was 20 to 30 cm height. Cotton treated with flumioxazin PDS at either rate applied to dry soil, wet soil, or dry soil followed immediately by irrigation was not injured. In the third experiment, flumioxazin at 71 g/ha alone or in mixture with glyphosate at 1.12 g/ha was applied at 30, 21, 14, and 0 DBP in a conventional-tillage system. Flumioxazin applied alone or in mixture with glyphosate applied at any time did not injure cotton. In all experiments, cotton lint yields were not influenced by herbicide treatment.

Keywords

Flumioxazinglyphosatecotton, Gossypium hirsutum L., ‘Deltapine 5415 RRBG’, ‘Paymaster 1218 RRBG’, ‘Suregrow 125’Burndown treatmentLAYBY treatmentCOC, crop oil concentrateDBP, days before plantingMSMA, monosodium salt of methylarsonic acidNIS, nonionic surfactantPDS, postemergence-directed sprayPOST, postemergencePP, preplantPRE, preemergenceWAE, weeks after emergence
Type
Research
Information
Weed Technology , Volume 18 , Issue 2 , June 2004 , pp. 310 - 314
Copyright
Copyright © Weed Science Society of America 

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