Large Oriental Bittersweet Vines Can Be Killed by Cutting Alone

Oriental bittersweet (Celastrus orbiculatus Thunb.) is an invasive, exotic, woody vine introduced to North America in the mid- to late 1800s from East Asia. The New York State Department of Transportation considers oriental bittersweet a problem because it can kill roadside trees through competition and mechanical stress. These hazardous and dangerous trees then need to be removed before they cause harm. Two manipulative field experiments were conducted across the Hudson Valley by the State University of New York College of Environmental Science and Forestry to test timing of cutting and glyphosate herbicide concentration effects on large vine mortality. While results from the first year indicated that herbicides were needed to achieve high mortality rates, this was not true with second year results. Cutting vines without herbicides produce the same, high rate of mortality of oriental bittersweet vines after the second year (>90% kill) as cut stump treatments with herbicides. It may be important that high kill rates of cut vines is related to the large vine size and that stumps were in forest shade. The authors concluded that it may not be necessary to apply herbicide via cut stump methods to kill oriental bittersweet vines that have a minimum stem diameter > 1-inch and are growing in areas were the invaded trees and forest systems are not significantly disturbed with vine treatment.

• Record URL:
  https://www.dot.ny.gov/divisions/engineering/technical-services/trans-r-and-d-repository/C-06-24%20TASK%204%20CONTROLLING%20ORIENTAL%20BITTERSWEET.pdf
• 
• Corporate Authors:

  State University of New York, Syracuse

  College of Environmental Science and Forestry, 1 Forestry Drive
  Syracuse, NY  United States  13210

  New York State Department of Transportation

  Albany, NY  United States 

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Nowak, Christopher A
  • Peck, Caryl J
• Publication Date: 2014-7

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 52p

Subject/Index Terms

• TRT Terms: Field tests; Herbicides; Vegetation control
• Geographic Terms: New York (State)
• Subject Areas: Environment; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01603584
• Record Type: Publication
• Contract Numbers: SPR Research Project No. C-06-24
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jun 28 2016 4:41PM