Peatland Ecology Research Group (PERG)
Université Laval
Establishment of saplings in cut-over peatlands  2002 - 2005

Abstract of the project1

A large proportion of forest plantation trials on peat in Eastern Canada were visited in 2002 to evaluate the afforestation potential of abandoned peatlands excavated for their horticultural peat resource. A fertilization experiment was also conducted to determine the appropriate nutrient addition dose for plantation in cutover peatlands.

Performance was assessed by measuring survival rate, height and annual height growth of the planted species: red maple (Acer rubrum L.), tamarack (Larix laricina (Du Roi) Koch.), black spruce (Picea mariana (Mill.) BSP.), Jack pine (Pinus banksiana Lamb.), Scots pine (P. sylvestris L.) and hybrid poplar (Hybrids Populus spp.).

Performance for tamarack and black spruce, when compared to standards, showed a good potential for plantations in cutover peatlands. Red maple, Jack pine and Scots pine gave ambiguous results, while hybrid poplar plantations failed. Regarding the fertilizer experiment, a plateau for height and annual height growth was reached at 122,5 g/seedling of 3,4-19-29,2 (N-P2O5-K2O), half of the recommended dose for growing trees on mineral fields.

Therefore, it is possible to plant tree species in abandoned peatlands if we take care of their nutrition.
Project's publication(s) & communication(s)
1 From: Bussières, J. 2005. Potentiel d'établissement d'essences forestières et fruitières en tourbières résiduelles. Mémoire de M.Sc., Département de phytologie, Université Laval, Sainte-Foy.


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