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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Lewis, W. M.;
DiPaola, J. M. |
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| Author Affiliation: | North Carolina State University |
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| Title: | Release of Centipedegrass from Bahiagrass Competition. |
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| Source: | Southern Weed Science Society Proceedings. Vol. 39, January 1986, p. 148. |
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| Publishing Information: | Nashville, TN: Southern Weed Science Society. |
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| Keywords: | TIC Keywords: Eremochloa ophiuroides; Paspalum notatum; Herbicides; Fenoxaprop-ethyl
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| Abstract/Contents: | "Centipedegrass [Eremochloa ophiuroides (Murs.) Hack] is adapted to highway roadside conditions in 60% of North Carolina and is one of the best low maintenance turf species. It could potentially eliminate the need for mowing along roadsides due to its low growth habit and unobjectionable seedheads. However, centipedegrass is slow to establish and must be released from the competition of companion or weedy grasses. The tolerance of centipedegrass and bahiagrass (Paspalum notatum Flugge) to herbicides was evaluated to determine if bahiagrass could be suppressed or controlled in a stand of centipedegrass. Centipedegrass exhibited acceptable discoloration from sethoxydim at 224 to 672 g ha-1 and sulfometuron-methyl at 53 to 140 g ha-1. Also there were no unfavorable effects on turf quality or density. Centipedegrass did not maintain adequate color and quality following treatment with fenoxaprop-ethyl at 168 and 336 g ha-1, fluazifop-butyl at 224 to 672 g ha-1, DPX-Y6202 at 67 and 134 g ha-1, and haloxyfop-methyl at 140 and 280 g ha-1. Color ratings three weeks after application and quality ratings two weeks after application in 1984 indicated bahiagrass was adversely affected by all herbicide treatments. Bahiagrass gradually recovered from the three lower rates of sethoxydim, but not from 672 g ha-1 or from two applications two weeks apart of 224 g ha-1 per application. Turf color and quality decreased over time for sulfometuron and sulfometuron-methyl. Applications of sethoxlydim and sulfometuron-methyl repeated at 2-week intervals did not have an adverse effect on the quality of centipedegrass but did suppress control of the bahiagrass. These applications of sethoxydim at 224 or 336 g ha-1 and two or three applications of sulfometuron-methyl at 70 or 140 g ha-1 effectively suppressed bahiagrass. These herbicides also reduced the number of green shoots of bahiagrass in a 10 x 10 cm plug placed into a stand of centipedegrass. Repeat applications of sethoxydim reduced the number of shoots by 60 to 90% and sulfometuron-methyl reduced shoots completely. In 1985, two applications of these two herbicides were compared applied 2, 4 and 6 weeks apart. For suppression of bahiagrass two applications of sulfometuron-methyl at 53 or 70 g ha-1 spaced 2 weeks apart was most effective while for sethoxydim at 224 or 336 g ha-1 spaced 4 weeks apart was the best. These results indicated that bahiagrass can be successfully suppressed in a mix stand with centipedegrass without injury to centipedegrass. Since sethoxydim does have label registration for certain ornamentals and trees, it may be environmentally safer to use along highways for release of centipedegrass from competition of bahigrass and annual weedy grasses." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lewis, W. M., and J. M. DiPaola. 1986. Release of Centipedegrass from Bahiagrass Competition.. South. Weed Sci. Soc. Proc. 39:p. 148. |
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MSU catalog number: SB 611 .S6 |
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