Fourth year response of aspen seedlings to lime, nitrogen and phosphorus applied at planting and 1 year after planting

Driessche, R. van den; Niemi, F.; Charleson, Lee R.

doi:10.1016/j.foreco.2005.08.047

Cited by 13 publications

(1 citation statement)

References 18 publications

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“…This is consistent with a study by Chapin et al [30], who found that total biomass of aspen seedlings increased with increasing phosphorus supply rate. Applying phosphorus fertilizer to aspen increased height and stem volume [31], and aspen growth has been reported to be positively related to soil extractable potassium [21]. In another study, which analyzed the chemical composition of clayey, sandy, and loamy stockpiles, levels of extractable phosphorus and potassium were comparable to levels acceptable for agricultural purposes, and no adverse effect of stockpiling on chemical fertility was observed except in the case of nitrogen [3].…”

Section: Discussionmentioning

confidence: 91%

Growth Response of Aspen and Alder to Fresh and Stockpiled Reclamation Soils

Omari

Gupta

Pinno

2018

Forests

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Soil stockpiling is a common reclamation practice used in oil sands mining in the boreal forest region of Canada to conserve soil resources; but stockpiling may have detrimental effects on soil quality and plant growth. We examined growth response of trembling aspen (Populus tremuloides Michx.), a fast-growing early successional tree, and green alder (Alnus viridis (Chaix) DC. ssp crispa (Ait.) Turrill), a nitrogen-fixing shrub, to stockpiling and fertilization treatments on two reclamation soils (forest floor mineral mix (FFMM) and peat mineral mix (PMM)). Aspen and alder seeds were planted and their growth monitored for four months in the greenhouse. We found that unfertilized stockpiled FFMM supported significantly higher aspen and alder aboveground biomass than the other fresh and stockpiled soils. Phosphorus and potassium supply rates were highest in stockpiled FFMM and were positively correlated with aboveground plant biomass. There was no significant difference in aspen and alder aboveground biomasses between unfertilized fresh FFMM and PMM soils. Aspen grown in combination with nitrogen-fixing alder did not experience competition or facilitation except on fresh PMM, where aspen height declined. Fertilization increased both aspen and alder growth and eliminated differences in growth between soil types and stockpiling treatments. Our study showed that individual soil properties are more important for revegetation purposes than type of soil or stockpiling treatment.

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