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Effect of Chemical Treatments on Bahiagrass (Paspalum notatum) Suppression

Published online by Cambridge University Press:  12 June 2017

Linda S. Nelson ,
Kurt D. Getsinger  and
Kien T. Luu
Linda S. Nelson
Affiliation:
Environmental Laboratory, US Army Engineer Waterways Exp. Stn., 3909 Halls Ferry Road, Vicksburg, MS 39180-6199
Kurt D. Getsinger
Affiliation:
Environmental Laboratory, US Army Engineer Waterways Exp. Stn., 3909 Halls Ferry Road, Vicksburg, MS 39180-6199
Kien T. Luu
Affiliation:
Environmental Laboratory, US Army Engineer Waterways Exp. Stn., 3909 Halls Ferry Road, Vicksburg, MS 39180-6199
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Abstract

Field studies were conducted at Charleston, SC to evaluate the effects of six chemical treatments on bahiagrass and the potential of these treatments to reduce mowing operations. Sulfometuron, maleic hydrazide, and imazethapyr plus imazapyr, in decreasing order of effectiveness, were the most consistent treatments evaluated during the 2-yr study. Sulfometuron reduced bahiagrass vegetative height (23%) for 6 to 8 WAT and suppressed 87 to 92% of seedheads without adversely affecting turf quality. All treatments temporarily discolored turf; however, effects were not objectionable for medium- to low-quality turf settings. Sulfometuron, maleic hydrazide, and imazethapyr plus imazapyr controlled growth and maintained acceptable turf quality for an average of 9, 9, and 8 wk, respectively; thereby reducing mowing operations by an average 29%. Mefluidide plus fluazifop-P, mefluidide plus sulfometuron, and chlorosulfuron were the least effective and/or consistent treatments evaluated.

Keywords

Chlorsulfuron, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamidefluazifop-P, (R)-2-[4-[[5(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidammonium salt of imazapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acidammonium salt of imazethapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidmaleic hydrazide, potassium salt of 1,2-dihydro-3,6-pyridazinedionemefluidide, N-[2,4-dimethyl-5-[[(trifluoromethyl)sulfonyl]amino]phenyl]acetamidesulfometuron, 2-[[[[(4,6-dimethyl-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoic acid, bahiagrass, Paspalum notatum Flügge # PASNOGrounds maintenancemowing reductionturfchlorsulfuronimazethapyrimazapyrmaleic hydrazidemefluididefluazifop-PsulfometuronPaspalum notatumPASNO
Type
Research
Information
Weed Technology , Volume 7 , Issue 1 , March 1993 , pp. 127 - 133
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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