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Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Waltz, F. C.;
Whitwell, T.;
Baker, R. |
Author Affiliation: | Department of Horticulture, Clemson University, Clemson, SC |
Title: | Fenoxaprop surpresses bermudagrass encroachment into bentgrass greens |
Meeting Info.: | 51st Annual Meeting, Birmingham, AL, January 26-28, 1998 |
Source: | Southern Weed Science Society Proceedings. Vol. 51, 1998, p. 68-69. |
Publishing Information: | Champaign, IL: Southern Weed Science Society. |
# of Pages: | 2 |
Keywords: | TIC Keywords: Fenoxaprop-ethyl; Cynodon; Weed control; Agrostis stolonifera; Golf greens; Discoloration; Cultivar variation; Herbicide resistance; Lolium perenne
|
Cultivar Names: | Crenshaw; Penncross; Penn A-1 |
Abstract/Contents: | "In the last few years the use of creeping bentgrass (Agrostis stolonifera) for golf course putting greens in the Southeastern United States has increased. This renewed interrest in the use of bentgrass is the result of the release of improved cultivars. The new selections provide improved disease resistance and greater drought and heat tolerance, while maintaining a superior putting surface. Also, the new selections tend to be more aggressive than previous cultiivars, but during the summer months are still invaded by bermudagrass (Cynodon spp.) from collars and fairways. This competition reduces putting area, disrupts the putting surface, reduces aesthetic quality, and competes with bentgrass for light, water, and nutrients. In 1996, field studies were conducted on two golf courses to evaluate herbicides for suppressing bermudagrass encroaching into the bentgrass playing surface. Monthly applications of fenoxaprop (0.07 lb ai/ A) suppressed bermudagrass (35%). It was observed that discoloration to 'Crenshaw' bentgrass was less than discoloration to 'Penncross' bentgrass after fenoxaprop application. In 1997, field and greenhouse studies were initaited with the new cultivars to evaluate bermudagrass control and bentgrass cultivar tolerance. Fenoxaprop (0.14 lb ai/ A) controlled (>40%) bermudagrass 20 days after initial treatment and 20 days after a second application provided greateer than 50% control. Injury to 'A-1' bentgrass was less than 10%. Similar results were observed in greenhouse studies. 'A-1' bentgrass had better color (>7) than 'Penncross' bentgrass, 22 days after fenoxaprop (0.21 lb ai/A) application. In the field, plots treated with fenoxaprop (0.14 lb ai/A) reduced bermudagrass and improved old perennial ryegrass (Lolium perenne) growth. Fenoxaprop can be used to suppress bermudagrass encroachment, however repeat applications will be required during the growing season. Also, bentgrass injury may occur and some cultivars may be less sensitive to fenoxaprop and may recover from injury quicker than others. Further investigation should focus on determining fenoxaprop rates for adequate bermudagrass control with minimal bentgrass injury. Other bentgrass cultivars need to be evaluated for fenoxaprop susceptibility. Investigations for a complete control program may include the use of ryegrass borders at the play interface and the combinations with plant growth regulators." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Waltz, F. C., T. Whitwell, and R. Baker. 1998. Fenoxaprop surpresses bermudagrass encroachment into bentgrass greens. South. Weed Sci. Soc. Proc. 51:p. 68-69. |
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| MSU catalog number: SB 611 .S6 v.51 |
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