Peatland Ecology Research Group (PERG)
Université Laval
Fertilization in residual peatland afforestation 2004 - 2007

Abstract of the project1

Residual peatland afforestation can be complementary to ecological restoration or it can be a rehabilitation option where restoration is problematic.

Residual is too nutrient poor to allow for adequate tree growth. Fertilization at planting time is then necessary to promote the growth and survival of tree seedlings. Refertilization must also be considered to sustain tree growth after that the initial fertilization effect has vanished.

We have studied the effect of six localized fertilization treatments, applied at planting time, on the growth, survival and nutrition of black spruce and tamarack seedlings. The importance of applying nitrogen, phosphorous and potassium for plantation refertilization has also been studied.

Our results show that a good initial fertilization must include an easily accessible nitrogen source as well as sufficient amounts of phosphorous and potassium. At refertilization time, phosphorous is the key element to apply to promote tree growth.
Project's publication(s) & communication(s)
1 From : Caisse, G. 2007. Importance de la fertilisation lors du boisement des tourbières résiduelles. M.Sc. Thesis, Département de phytologie, Université Laval, Québec.


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