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Growth, Reproduction, and Management of Chinese Yam (Dioscorea oppositifolia)

Published online by Cambridge University Press:  20 January 2017

Christopher L. Main ,
Joseph E. Beeler ,
Darren K. Robinson  and
Thomas C. Mueller
Christopher L. Main
Affiliation:
Plant Sciences Department, 2431 Joe Johnson Drive, 252 Ellington Building, University of Tennessee, Knoxville, TN 37996
Joseph E. Beeler
Affiliation:
Plant Sciences Department, 2431 Joe Johnson Drive, 252 Ellington Building, University of Tennessee, Knoxville, TN 37996
Darren K. Robinson
Affiliation:
Plant Sciences Department, 2431 Joe Johnson Drive, 252 Ellington Building, University of Tennessee, Knoxville, TN 37996
Thomas C. Mueller*
Affiliation:
Plant Sciences Department, 2431 Joe Johnson Drive, 252 Ellington Building, University of Tennessee, Knoxville, TN 37996
*
Corresponding author's E-mail: tmueller@utk.edu
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Abstract

Chinese yam is an exotic perennial vine that invades natural areas in the temperate regions of the eastern United States. Research was conducted from 2001 to 2004 to evaluate growth, reproduction, and management options for this weed. Vine length, lateral shoot production, and reproductive capacity were lower in the first year of growth compared to 2 subsequent years. During the second and third growing season, plants were more mature and tended to flower earlier and produce larger bulbils compared to the first growing season. Maximum vine length was not reached prior to frost in the first year and was approximately 480 cm in each of the subsequent years. Both glyphosate and triclopyr were effective in controlling plants growing from bulbils and plants growing from tubers. Triclopyr did not display acropetal translocation, in that only the treated tissue died. However, both products displayed excellent basipetal translocation resulting in elimination of tubers and no shoot regrowth the year following treatment. Native area managers should attempt to eradicate small populations of Chinese yam prior to establishment of an extensive tuber system.

Keywords

Chinese yam, Dioscorea oppositifolia L.glyphosate, triclopyrCinnamon vineDioscorea batatas, exotic plants, invasive plants, nagaimo, natural areasGDD, growing degree daysNIS, nonionic surfactant
Type
Invasive Weeds
Information
Weed Technology , Volume 20 , Issue 3 , September 2006 , pp. 773 - 777
Copyright
Copyright © Weed Science Society of America 

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References

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