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Mean humus concentrations of exchange manganese and iron
Experimental concentrations per tree species
Mean iron concentrations
Experimental concentrations on tree species roots
Mean seedling dry weights (black spruce humus)
Experiment results per treatment on each tree species
Mean seedlings dry weights (jack pine humus)
Experiment results on each tree species per treatment
Mean foliage concentrations of manganese and iron
Mineral concentrations per treatment on each species
Mean manganese concentrations on tree species roots
Results table on Mg concentrations per treatment/species
Tree species mean seedling weight response to manganese
Graph on manganese effects on seedlings weight
Mineral concentrations change through time
Graph on mineral concentrations through time
UofT experimental forest area
Field researchers at an experimental site
Conwed tube 30 min after planting
Filtration experiment on soil