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Thinning of broadleaf/conifer mixtures

Objective

  • To establish a minimum of 3 experimental sites that can be used to produce tending and thinning guidelines for current conifer / broadleaf mixtures
  • To investigate the products available from thinnings of conifer / broadleaf mixtures

WP 4a – State-of-the-Art

  • A comprehensive literature review will be conducted, making use of the internet and available abstracts databases.
  • All literature collected will be entered into a database (EndNote) and filed.
  • A review of unpublished work undertaken in Ireland will be carried out.
  • NATFOREX database will be interrogated to source existing national trials to visit.

WP4b – Timing and Intensity of Thinning

  • Source a minimum of 3 suitable sites (Forest Service Inspectors and Teagasc Forestry Development Officers will be instrumental)
  • With regard to information gained from WP4a, establish plots (months 6 – 42)
    • Possible treatments may include removal of all nurse crop, removal of alternate lines of nurse crop
    • Possible treatments may include thinning when nurse is 1m, 3m and 5m taller than crop species
    • Endeavour to use recognised experimental designs and plots of sufficient size to facilitate long-term research in conjunction with demonstration
  • Measure and monitor plots to end of project
    • Survival; Stem diameter; Stem height; Stem form
  • Manage the trial sites to end of project

WP4c – Products from Thinnings

  • A comprehensive literature review will be conducted, making use of the internet and available abstracts databases. All literature collected will be entered into a database (EndNote) and filed.
  • Visits to existing producers using small-dimension roundwood from thinnings, both nationally and internationally, will be conducted and reported upon.
  • Links with WP4a and WP5c.

WP4d – Thinning Protocols

This WP depends on the results of WP4b and WP4c. Thinning Protocols will only be produced if there is sufficient data and reliable results to form the protocols.

  • Draft Thinning Protocols will be derived by the Programme team and distributed for comment to industry
  • Final Thinning Protocols will be produced and disseminated