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Japanese Climbing Fern (Lygodium japonicum) Management in Florida's Apalachicola Bottomland Hardwood Forests

Published online by Cambridge University Press:  20 January 2017

Patrick J. Minogue ,
Kimberly K. Bohn ,
Anna Osiecka  and
Dwight K. Lauer
Patrick J. Minogue*
Affiliation:
University of Florida, North Florida Research and Education Center, 155 Research Road, Quincy, FL 32351
Kimberly K. Bohn
Affiliation:
University of Florida, West Florida Research and Education Center, 5988 Hwy. 90, Bld. 4900, Milton, FL, 32583
Anna Osiecka
Affiliation:
University of Florida, North Florida Research and Education Center, 155 Research Road, Quincy, FL 32351
Dwight K. Lauer
Affiliation:
Silvics Analytic, 122 Todd Circle, Wingate, NC 28174
*
Corresponding author's E-mail: pminogue@ufl.edu
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Abstract

Japanese climbing fern (Lygodium japonicum) is an invasive vine that has been identified as an economic and ecological threat in forest ecosystems of the Southeast. In two separate studies, we examined the use of directed sprays of glyphosate, imazapyr, and metsulfuron-methyl herbicides, alone and in combination, for control of Japanese climbing fern and for impacts to associated vegetation in mixed bottomland hardwood–cypress forests at two first terrace sites of the Apalachicola River in north Florida. Two yr after treatment, various rates of glyphosate alone generally provided greater percent control (84 to 95%) than imazapyr alone (−25 to 86%) or metsulfuron-methyl alone (−5 to 53%). Combinations of 2% glyphosate and imazapyr and/or metsulfuron-methyl resulted in 81 to 97% control at 2 yr after treatment, with no significant differences among the combination treatments or 2% glyphosate alone. Change in percent cover of associated vegetation groups was not influenced by treatment except for one location where graminoid cover increased 1 yr after metsulfuron-methyl treatment but decreased after imazapyr or glyphosate application. Species richness of dominant understory vegetation remained nearly constant at both locations regardless of treatment. These data indicate that glyphosate alone or in combination with imazapyr or metsulfuron-methyl will provide effective, although not complete, control of Japanese climbing fern, and that directed herbicide sprays minimally impact nontarget vegetation.

Keywords

Glyphosateimazapyrmetsulfuron-methylJapanese climbing fern, Lygodium japonicum (Thunb.) Sw.USDA code LYJAEPPO code LYFJAInvasive plantinvasive vinenatural areasriparian areasspecies richness
Type
Research
Information
Invasive Plant Science and Management , Volume 3 , Issue 3 , November 2010 , pp. 246 - 252
Copyright
Copyright © Weed Science Society of America 

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