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Common Bermudagrass (Cynodon dactylon) Suppression in Zoysia spp. with Herbicides

  • B. Jack Johnson (a1)

Abstract

During 1989 and 1990, herbicides were applied to suppress common bermudagrass in a mixed stand of common bermudagrass and ‘Emerald’ zoysiagrass. When the mixed stand was treated with fluazifop at 0.2 kg ha-1 mid-May and 0.1 kg ha-1 1 mo later for two consecutive years, the common bermudagrass cover was reduced from 35 to 7% and the zoysiagrass cover increased from 65 to 85%. Similar results were achieve when fenoxaprop was applied at 0.2 kg ha-1 mid-May and repeated at monthly intervals for a total of four applications each year for 2 yr. The quality of mixed common bermudagrass and zoysiagrass turf was reduced immediately after each treatment; however, zoysiagrass recovered and treatments did not result in permanent damage. Sethoxydim suppressed common bermudagrass during the second year of treatment, but reduced the zoysiagrass stand each year. Ethofumesate applied along or with flurprimidol severely reduced the zoysiagrass stand with an increase of common bermudagrass.

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References

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1. Coats, G. H., Scruggs, J. W., Anderson, D. H., Herring, D. C., and Munoz, R. F. 1986. Herbicide screening studies in warm-season turfgrass. 1985. Mississippi Agric. For. Exp. Stn. Bull. 945:13 p.
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3. Dickens, R., Turner, D. L., and Baird, J. 1987. Available herbicides offer only temporary control of common bermudagrass in sod production fields. Alabama Highlights of Agric. Res. 34(4):4.
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5. Hicks, C. P. and Jordan, T. N. 1984. Response of bermudagrass (Cynodon dactylon), quackgrass (Agropyron repens), and wirestem muhly (Mublenbergia frondosa) to postemergence grass herbicides. Weed Sci. 32:835841.
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8. Johnson, B. J. and Carrow, R. N. 1989. Bermudagrass encroachment into creeping bentgrass as affected by herbicides and plant growth regulators. Crop Sci. 29:12201227.
9. Johnson, B. J. and Carrow, R. N. 1991. Frequency of flurprimidolherbicide treatments on bermudagrass (Cynodon spp.) encroachment into creeping bentgrass (Agrostis palustris). Weed Sci. 39:221226.
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Keywords

Common Bermudagrass (Cynodon dactylon) Suppression in Zoysia spp. with Herbicides

  • B. Jack Johnson (a1)

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