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Smooth Cordgrass (Spartina alterniflora) Control with Imazapyr

Published online by Cambridge University Press:  20 January 2017

Kim Patten
Kim Patten*
Affiliation:
Washington State University Long Beach Research and Extension Unit, 2907 Pioneer Road, Long Beach, WA 98631
*
Corresponding author's E-mail: [email protected]
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Abstract

Outside its native range, smooth cordgrass is a noxious weed in estuaries throughout the world. Trials were conducted to evaluate smooth cordgrass control with imazapyr at various timings, rates, and spray volumes, and with several surfactants; comparisons were made with glyphosate, the sole herbicide registered in the United States for estuarine use. Across years, all sites, application dates, and experiments, it was found that smooth cordgrass control with imazapyr at 1.68 kg/ha was better and more consistent than with glyphosate at 8.4 kg/ha. Control with imazapyr at 0.84 kg/ha was comparable to control with glyphosate at 8.4 kg/ha. The time between application and tidal inundation over the canopy affected the efficacy of imazapyr less than that of glyphosate. There was a lack of consistent effects across dates of application. For imazapyr, a higher application volume (467 L/ha) usually provided better control than did the low volume (93 L/ha), but excellent control was achieved using ultra-low application volumes (23 and 47 L/ha) if the dry time was greater than 12 h. Several surfactants provided comparable efficacy for imazapyr.

Keywords

Glyphosateimazapyrsmooth cordgrass, Spartina alterniflora Loisel. #3 SPTALAquatic weed managementestuarysurfactantultra-low volumeMAT, months after treatmentMHHW, mean higher high waterMLLW, mean lower low waterRCB, randomized complete block designSE, standard error
Type
Research
Information
Weed Technology , Volume 16 , Issue 4 , December 2002 , pp. 826 - 832
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Callaway, J. C. and Josselyn, M. N. 1992. The introduction and spread of smooth cordgrass (Spartina alterniflora) in South San Francisco Bay. Estuaries 15: 218–226.CrossRefGoogle Scholar
Chamberlain, S. J. 1995. Comparison of Methods to Control Spartina alterniflora in San Francisco Bay. . San Francisco State University, San Francisco, CA.Google Scholar
Crockett, R. P. 1997. A historical perspective of glyphosate use to control Spartina alterniflora in Willapa Bay. In Patten, K., ed. Proceedings of the Second International Spartina Conference. Olympia, WA: Washington State University. pp. 83–84.Google Scholar
Daehler, C. C. and Strong, D. R. 1996. Status, prediction, and prevention of introduced cordgrass (Spartina spp.) invasions in Pacific estuaries, USA. Biol. Conserv. 8: 51–58.Google Scholar
Dumbauld, B. R., Peoples, M., Holcomb, L., and Ratchford, S. 1997. The potential influence of the aquatic weed Spartina alterniflora and control practices on clam resources in Willapa Bay, Washington. In Patten, K., ed. Proceedings of the Second International Spartina Conference. Olympia, WA: Washington State University. pp. 51–57.Google Scholar
Frid, C., Chandrasekara, W., and Davey, P. 1999. The restoration of mud flats invaded by common cordgrass (Spartina anglica) using mechanical disturbance and its effects on the macrobenthic fauna. Aquat. Conserv. Mar. Freshw. EcoSyst. 9: 47–61.Google Scholar
Garnett, R. P., Hirons, G., Evans, C., and O'Connor, D. 1992. The control of Spartina (cord-grass) using glyphosate. Asp. Appl. Biol. 29: 359–364.Google Scholar
Goss-Custard, J. D. and Moser, M. E. 1988. Rates of change in the numbers of dunlin, Calidris alpina, wintering in British estuaries in relation to the spread of Spartina anglica . J. Appl. Ecol. 25: 95–109.Google Scholar
Gray, A., Raybould, A., and Brown, S. 1997. The environmental impact of Spartina anglica: past, present and predicted. In Patten, K., ed. Proceedings of the Second International Spartina Conference. Olympia, WA: Washington State University. pp. 29–45.Google Scholar
Kilbride, K. M., Paveglio, F. L., and Grue, C. E. 1995. Control of smooth cordgrass with Rodeo® in southwestern Washington estuary. Wildl. Soc. Bull. 23: 520–524.Google Scholar
Kriwoken, L. K. and Hedge, P. T. 2000. Exotic species and estuaries: managing Spartina anglica in Tasmania, Australia. Ocean Coast. Manag. 43: 573–584.CrossRefGoogle Scholar
Lewis, M. A. 1991. Chronic and sublethal toxicities of surfactants to aquatic animals: a review and risk assessment. Water Res. 25: 101–113.Google Scholar
Millard, A. V. and Evans, P. R. 1984. Colonization of mudflats by Spartina anglica; some effects on invertebrate and shorebird populations at Landisfarne. In Doody, P., ed. Spartina anglica in Great Britain. Focus on Nature Conservation No. 5. Cambridgeshire, UK: Nature Conservancy Council. pp. 41–48.Google Scholar
Nalewaja, J. D. and Matysiak, R. 1991. Salt antagonism of glyphosate. Weed Sci. 39: 622–628.Google Scholar
Partridge, T. R. 1987. Spartina in New Zealand. N. Z. J. Bot. 25: 567–575.CrossRefGoogle Scholar
Paveglio, F. L., Kilbride, K. M., Grue, C. E., Simenstad, C. A., and Fresh, K. L. 1996. Use of Rodeo® and X-77 spreader to control smooth cordgrass (Spartina alterniflora) in a southwestern Washington estuary: 1. Environmental fate. Environ. Toxicol. Chem. 15: 961–968.Google Scholar
Pritchard, G. 1992. Control of Spartina with herbicides. In Fraser-Quick, G. and Phillips, A., eds. The Sea has Weeds Too! Proceedings of a Conference on the Problem of Spartina . Victoria, UK: Inverloch. pp. 23–29.Google Scholar
Pritchard, G. 1994. Spartina—Progress Trial Report. Frankston, Victoria, Australia: Keith Turnbull Research Institute.Google Scholar
Pritchard, G. 1995. Herbicide trials on Spartina . In Rash, J. E., Williamson, R. C., and Taylor, S. J., eds. Proceedings of the Australasian Conference on Spartina Control. Melbourne, Australia: Victorian Government Publication. 65 p.Google Scholar
SanLeon, D. G., Izco, J., and Sonchez, J. M. 1999. Spartina paten as a weed in Galician saltmarshes (Northwest Iberian Peninsula). Hydrobiologia 415: 213–222.Google Scholar
Sayce, K. 1988. Introduced Cordgrass, Spartina alterniflora Loisel, in Saltmarshes and Tidelands of Willapa Bay, WA. USFWS-87058 (TS). Ilwaco, WA: Willapa National Wildlife Refuge. 70 p.Google Scholar
Shaw, W. B. and Gosling, D. S. 1995. Spartina control in New Zealand—an overview. In Rash, J. E., Williamson, R. C., and Taylor, S. J., eds. Proceedings of the Australasian Conference on Spartina Control. Melbourne, Australia: Victorian Government Publication. pp. 43–60.Google Scholar