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Differential Response of Five Bahiagrass (Paspalum notatum) Cultivars to Metsulfuron

Published online by Cambridge University Press:  20 January 2017

B. Todd Bunnell ,
Robert D. Baker ,
Lambert B. McCarty ,
David W. Hall  and
Daniel L. Colvin
B. Todd Bunnell*
Affiliation:
Clemson University, Clemson, SC 29634-0375
Robert D. Baker
Affiliation:
The Scotts Company, Marysville, OH 43041
Lambert B. McCarty
Affiliation:
Clemson University, Clemson, SC 29634-0375
David W. Hall
Affiliation:
University of Florida, Gainesville, FL 32611
Daniel L. Colvin
Affiliation:
University of Florida, Gainesville, FL 32611
*
Corresponding author's E-mail: [email protected]
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Abstract

Bahiagrass is used for roadsides, pastures, and lawns in the southeastern United States mainly because of drought and nematode tolerance. Metsulfuron is a sulfonylurea herbicide, which selectively controls bahiagrass in bermudagrass. Certain cultivars of bahiagrass were observed to be tolerant to recommended rates of metsulfuron. Therefore, research was conducted to investigate the susceptibility of five major bahiagrass cultivars to metsulfuron applied at increasing rates to 42 g ai/ha. Five bahiagrass cultivars were evaluated: ‘Pensacola’, ‘Tifton-9’, ‘Argentine’, ‘Common’, and ‘Paraguayan’. Argentine, Common, and Paraguayan cultivars showed a four- to fivefold increased tolerance to metsulfuron compared with Pensacola. Because of yearly inconsistencies, results for Tifton-9 were inconclusive.

Keywords

MetsulfuronArgentine bahiagrass, Paspalum notatum Fluegge var. notatum ‘Argentine’bermudagrass, Cynodon dactylon (L.) PersCommon bahiagrass, Paspalum notatum Fluegge var. notatum ‘Common’Paraguayan bahiagrass, Paspalum notatum Fluegge var. notatum ‘Paraguayan’Pensacola bahiagrass, Paspalum notatum Fluegge var. saurae Parodi ‘Pensacola’Tifton-9 bahiagrass, Paspalum notatum Fluegge var. saurae Parodi ‘Tifton-9’GR50, metsulfuron rate required to reduce regrowth to 50% of untreatedOM, organic matterWAT, weeks after treatment
Type
Research
Information
Weed Technology , Volume 17 , Issue 3 , September 2003 , pp. 550 - 553
Copyright
Copyright © Weed Science Society of America 

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Footnotes

1 Publication 4811 South Carolina Experimental Research Station Journal Series.

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