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Response of Fall-Seeded Tall Fescue (Festuca arundinacea) to Spring-Applied Herbicides

Published online by Cambridge University Press:  12 June 2017

B. Jack Johnson  and
Tim R. Murphy
B. Jack Johnson
Affiliation:
Univ. of Georgia, Georgia Stn., Griffin, GA 30223-1797
Tim R. Murphy
Affiliation:
Univ. of Georgia, Georgia Stn., Griffin, GA 30223-1797
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Abstract

Preemergence herbicides were applied on February 28 at the recommended and three times the normal rate to determine the tolerance of tall fescue that was seeded in September, October and November of the preceding year. Fall seeding date of tall fescue significantly affected its tolerance to spring-applied preemergence herbicides. Generally, preemergence herbicides at normal rates were safe to apply to September- or October-seeded tall fescue. No herbicide was completely safe to apply to November-seeded tall fescue. The density of November-seeded tall fescue was generally reduced less with benefin, bensulide, dithiopyr, oxadiazon G and WP than with benefin plus oryzalin, oryzalin, or pendimethalin.

Keywords

Benefin, N-butyl-N-ethyl-2,6-dinitro-4-(trifluoromethyl)benzenaminebensulide, O,O-bis(1-methylethyl) S-[2-[(phenylsulfonyl)amino]ethyl]phosphorodithioatedithiopyr, S,S-dimethyl 2-(difluoromethyl)-4-(2-methylpropyl)-6-(trifluoromethyl)-3,5-pyridinedicarbothioateoryzalin, 4-(dipropylamino)-3,5-dinitrobenzenesulfonamideoxadiazon, 3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2-(3H)-onependimethalin, N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenaminetall fescue, Festuca arundinacea Schreb. ‘Kentucky 31’, ♯ FESARTurfgrass toleranceinjuryqualitydensitypreemergence herbicidesFESAR
Type
Research
Information
Weed Technology , Volume 5 , Issue 2 , June 1991 , pp. 304 - 309
Copyright
Copyright © 1991 Weed Science Society of America 

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References

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