Mechanical and chemical treatment of hardwood competition in mixedwood cutovers in western Newfoundland
Document Type: Book
Author(s): J. Richardson
Publication Year: 1980

Cataloging Information

  • Abies balsamea
  • Acer spicatum
  • Betula alleghaniensis
  • Betula papyrifera
  • Canada
  • chemical compounds
  • competition
  • coniferous forests
  • conifers
  • Epilobium angustifolium
  • forest management
  • hardwood forests
  • herbaceous vegetation
  • herbicides
  • mortality
  • Newfoundland
  • Picea glauca
  • Picea mariana
  • population density
  • Prunus pensylvanica
  • regeneration
  • reproduction
  • Rubus idaeus
  • seedlings
  • site treatments
  • sloping terrain
  • Sorbus americana
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 39218
Tall Timbers Record Number: 13857
TTRS Location Status: In-file
TTRS Call Number: CAN DOCS Information Report N-X-188 DDW
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


On rich productive mixedwood cutover sites in western Newfoundland, hardwood reproduction competes strongly with regenerating softwood seedlings, chiefly of balsam fir. An experiment was established to compare several chemical methods and one mechanical method of releasing the softwood seedlings from the hardwood competition. Predliminary results one year after treatment show that chemical treatments gave much better control of hardwood competition than mechanical brushcutting which stimulated profuse regrowth of hardwood species. Of the three herbicides tested, glyphosate ('Roundup') controlled most hardwood species better than triclopyr ('Dowcop 233') or a mixture of 2,4-D and 2,4,5-T ('Brushkill'). All treatments caused some minor damage to the fir and spruce seedlings they were intended to release, but the seedlings are expected go recover quickly. Abstract reproduced by permission, Natural Resources Canada, Canadian Forest Service. See on-line Canadian Forest Service Bookstore. Many pubs distributed free or available to download in Acrobat versions.

Online Link(s):
Richardson, J. 1980. Mechanical and chemical treatment of hardwood competition in mixedwood cutovers in western Newfoundland. Information Report N-X-188. St. John's, Newfoundland, Environment Canada, Forestry Service, Newfoundland Forest Research Centre.