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Herbicides for Killing Tall Fescue (Festuca arundinacea) Infected With Fescue Endophyte (Acremonium coenophialum)

Published online by Cambridge University Press:  12 June 2017

Albert E. Smith
Albert E. Smith*
Affiliation:
Univ. Ga., Griffin, GA 30223
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Abstract

The importance of tall fescue as a pasture grass is diminished when infected with the fescue endophyte. The availability of fungus-free seed has necessitated the development of systems to kill the infected sod before interseeding fungus-free seed. Field studies were conducted to evaluate the response of fescue sod to foliar-applied herbicides as single and sequential applications during the fall and spring. Sequential applications of paraquat at 0.14, 0.28, and 0.56 kg ai/ha in September and October and glyphosate at 0.84 and 1.7 kg/ha applied as single or sequential applications in September and October resulted in more than 90% kill of the tall fescue sod. Spring treatments of paraquat and glyphosate were less effective than those applied in the fall. Dalapon, fluazifop-P, HOE-39866 [glufosinate (proposed name)], sethoxydim, and simazine did not effectively kill the sod.

Keywords

Dalapon, 2,2-dichloropropanoic acidfluazifop-P, (R)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidglufosinate, ammonium-DL-homoalanin-4-yl(methyl)phosphinateglyphosate, N-(phosphonomethyl)glycineparaquat, 1,1′-dimethyl-4,4′-bipyridinium ionsethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onesimazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diaminetall fescue, Festuca arundinacea Schreb. ♯3 FESARfescue endophyte, Acremonium coenophialum Morgan-Jones and GamsAcremonium coenophialumendophytepasture renovationherbicide system
Type
Research
Information
Weed Technology , Volume 3 , Issue 3 , September 1989 , pp. 485 - 489
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

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