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Response of Nine Sugarbeet (Beta vulgaris) Cultivars to Postemergence Herbicide Applications

Published online by Cambridge University Press:  12 June 2017

Robert G. Wilson
Robert G. Wilson*
Affiliation:
Department of Agronomy, University of Nebraska, Scottsbluff, NE 69361; E-mail: [email protected]
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Abstract

A field experiment was conducted for 2 yr near Scottsbluff, NE, to evaluate the growth and yield response of nine commercial sugarbeet cultivars to five postemergence herbicide mixtures applied two times. Sugarbeet cultivars varied in their response to herbicides. Three of the five postemergence herbicide mixtures reduced sugarbeet leaf area at 9 wk after planting (WAP), while two treatments had no significant effect. Root yield reductions from herbicide treatments ranged from 3 to 11% averaged over the nine cultivars. Two applications of desmedipham plus phenmedipham at 180 plus 180 g/ha reduced root yield 3% compared to untreated plots. Two applications of clopyralid at 100 g/ha, triflusulfuron at 18 g/ha, or ethofumesate at 160 g/ha plus desmedipham plus phenmedipham resulted in a 17, 29, and 22% reduction in leaf area at 9 WAR respectively, and a 6, 8, and 6% reduction in root yield, respectively, compared to untreated plots. Sethoxydim at 280 g/ha plus desmedipham plus phenmedipham did not cause additional sugarbeet injury.

Keywords

Clopyralid, 3,6-dichloro-2-pyridinecarboxylic aciddesmedipham, ethyl [3-[[(phenylamino) carbonyl]oxy]phenyl]carbamateethofumesate, (±)-2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonatephenmedipham, 3-[(methoxycarbonyl)amino]phenyl (3-methyl-phenyl)carbamatesethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onetriflusulfuron, methyl 2-[[[[[4-((dimethylamino-6-(2,2,2-trifluoroethoxy))-1,3,5 triazin-2-yl]amino]carbonyl]amino]sulfonyl]-3-methylben zoatesugarbeet, Beta vulgaris (L)ClopyraliddesmediphamethofumesatephenmediphamtriflusulfuronDAT, days after treatmentLAI, leaf area indexWAP, weeks after planting
Type
Research
Information
Weed Technology , Volume 13 , Issue 1 , March 1999 , pp. 25 - 29
Copyright
Copyright © 1999 by the Weed Science Society of America 

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References

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