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Control of Smooth Cordgrass with Rodeo® in a Southwestern Washington Estuary

Kevin M. Kilbride, Fred L. Paveglio and Christian E. Grue
Wildlife Society Bulletin (1973-2006)
Vol. 23, No. 3 (Autumn, 1995), pp. 520-524
Published by: Wiley on behalf of the Wildlife Society
Stable URL: http://www.jstor.org/stable/3782964
Page Count: 5
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Control of Smooth Cordgrass with Rodeo® in a Southwestern Washington Estuary
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Abstract

We investigated efficacy of aerial and ground application of Rodeo® to control smooth cordgrass (Spartina alterniflora) on intertidal mudflats in Willapa Bay, Washington during 1992-1993. The herbicidal formula was applied to 2 1-ha plots using a helicopter with toe-mounted spray boom or by hand-held wand sprayer. Stem densities did not differ from pre- to post-treatment between aerially treated and control clones. Stem densities were reduced on clones where the herbicidal formulation was applied by hand. Stem density was reduced most at plots located highest in the intertidal zone. Efficacy depended on the time between treatment and subsequent tidal inundation of treated plants.

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