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Mechanical and Chemical Control of Cogongrass (Imperata cylindrica)

Published online by Cambridge University Press:  12 June 2017

Thomas R. Willard ,
Donn G. Shilling ,
James F. Gaffney  and
Wayne L. Currey
Thomas R. Willard
Affiliation:
Amer. Agric., Inc., Cary, NC
Donn G. Shilling
Affiliation:
Univ. Fla., Gainesville, FL
James F. Gaffney
Affiliation:
Univ. Fla., Gainesville, FL
Wayne L. Currey
Affiliation:
Weed Sys. Inc., Keystone Heights, FL
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Abstract

Field studies were initiated in 1985 and 1986 to evaluate the effects of dalapon, glyphosate, imazapyr, and sulfometuron applications to established cogongrass alone or in combination with either mowing or discing. Mowing and discing treatments were performed 4 mo before and 8 months after the herbicide treatments in the 1985 experiments and 2 months before and 7 months after the herbicide treatment in the 1986 experiments. When applied alone, glyphosate at 3.4 kg ai/ha and imazapyr at 0.8 kg ai/ha caused the greatest reduction in shoot and rhizome biomass about 2 yr after application. However, the rhizome infestation was reduced only 43% by glyphosate and 51% by imazapyr, as compared to the nontreated control. With no herbicide, two mowing or discing were generally more effective than a single mowing or discing treatment. The reduction in shoot and rhizome biomass for two mowing without herbicide was 65 and 38% and for two discing, 73 and 66%, respectively. Acceptable (> 80%) levels of cogongrass control, based on reductions in rhizome biomass occurred only when applications of dalapon, glyphosate, or imazapyr were made in combination with two discing despite the fact that mowing before and after treatment reduced shoot biomass by at least 89%.

Keywords

Dalapon, 2,2-dichloropropanoic acidglyphosate, N-(phosphonomethyl)glycineimazapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acidsulfometuron, 2-[[[[(4,6-dimethyl-2 pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoic acidcogongrass, Imperata cylindrica (L.) Beauv. # IMPCYDiscingmowingperennialtillageweed control combinations
Type
Research
Information
Weed Technology , Volume 10 , Issue 4 , December 1996 , pp. 722 - 726
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

Literature Cited

1. Beard, J. B. 1973. Turfgrass: Science and Culture. Prentice Hall, Englewood Cliffs, NJ. p. 658.Google Scholar
2. Chancellor, R. J. 1974. The development of dominance amongst shoots arising from fragments of Agropyron repens rhizomes. Weed Res. 14:29.Google Scholar
3. Chandler, K., Murphy, S. D., and Swanton, C. J. 1994. Effect of tillage and glyphosate on control of quackgrass (Elytrigia repens). Weed Technol. 8:450–456.CrossRefGoogle Scholar
4. Falvey, J. L., Hengmichai, P., and Pongpiachan, P. 1981. The productivity and nutritive value of Imperata cylindrica (L.) Beauv. in the Thai Highlands. J. Range Manage. 34:280–282.CrossRefGoogle Scholar
5. Hartley, C.W.S. 1949. An experiment on mechanical methods for lalang eradication. Malayan Agric. J. 32:236–252.Google Scholar
6. Holm, L. 1969. Weed problems in developing countries. Weed Sci. 17:113–118.Google Scholar
7. Holm, L. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. Imperata cylindrica (L.) Beauv. p. 62–71 in The World's Worst Weeds: Distribution and Biology. University Press of Hawaii, Honolulu, HI.Google Scholar
8. Keeping, G. S. and Matheson, H. D. 1949. Mechanical spraying for the eradication of lalang. Malayan Agric. J. 32:253–259.Google Scholar
9. Kushwaha, S.P.S., Ramakrishnan, P. S., and Tripathi, R. S. 1983. Population dynamics of Imperata cylindrica var. major related to slash and burn agriculture Jhum in northeastern India. Proc. Indian Acad. Sci. Plant Sci. 92:313–322.Google Scholar
10. Leaky, R. R. B., Chancellor, R. J., and Vince-Prue, D. 1978. Regeneration from rhizome fragments of Agropyron repens (L.) Beauv. IV. Effects of light on bud dormancy and the development of dominance amongst shoots on multi-node fragments. Ann. Bot. 42:205.Google Scholar
11. Prommool, S. 1984. Studies on weeds in the shifting cultivated area and non-shifting cultivated area. Thai. J. Weed Sci. 2:98–105.Google Scholar
12. Richards, J. N. and Caldwell, M. M. 1985. Soluble carbohydrates, concurrent photosynthesis and efficiency in regrowth following defoliation: a field study with Agropyron species. J. Appl. Ecol. 22:907–920.CrossRefGoogle Scholar
13. Sandanam, S. and Jayasinghe, H. D. 1977. Manual and chemical control of Imperata cylindrica on tea land in Sri Lanka. PANS 23:421–426.Google Scholar
14. Seth, A. K. 1970. Chemical control of Imperata cylindrica (L.) Beauv. in Malaysia. Weed Res. 10:87–93.CrossRefGoogle Scholar
15. SEAWIC (Southeast Asian Weed Information Center). 1987. Annotated bibliography. SEAMEO-BIOTROP Center, P.O. Box 17, Bogor 16001, Indonesia. 1:1–40.Google Scholar
16. Steckel, G. J. and Defelice, M. S. 1995. Interference in corn (Lea mays) with herbicides and cultivation. Weed Technol. 9:53–57.CrossRefGoogle Scholar
17. Willard, T. R., Hall, D. W., Shilling, D. G., Lewis, J. A., and Currey, W. L. 1990. Cogongrass (Imperata cylindrica) distribution on Florida highway rights-of-way. Weed Technol. 4:658–660.Google Scholar
18. Zimdahl, R. L. and Foster, G., 1993. Canada thistle (Cirsium arvense) control with disking and herbicides. Weed Technol. 7:146–149.Google Scholar