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Blister rust on jack pine. Silviculture 444a 491b
Cronartium comptoniae (Sweetfern blister rust) cankers on 50 yr jack pine. Cairo-Flavelle Twp. Engelhart Management Unit.
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Blister rust in white pine
Blister rust in large white pine. Tree seed plant Angus.
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Blister rust in pine, Silviculture slide 82b 96
Blister rust in large white pine. Tree seed plant Angus
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Blister rust (Cronartium ribicola) in planted white pine.
Blister rust(Cronartium ribicola) in planted white pine. Infection was most probably in the nursery. Owen Sound MNR
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Blister rust (Cronartium ribicola) aeciospores on 9 year old white pine.
Blister rust (Cronartium ribicola) aeciospores on 9 year old white pine. Leslie Frost Centre.
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Blister rust (Cronartium ribicola) aeciospores on 9 year old white pine.
Blister rust (Cronartium ribicola) aeciospores on 9 year old white pine. Leslie Frost Centre.
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Blake MacDonald's experiment to show the impact of water supply on growth of hard maple seedlings.
Blake MacDonald's experiment to show the impact of water supply: weekly vs. fortnightly watering on growth of hard maple seedlings.
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Blake MacDonald's experiment to show the impact of water supply on growth of hard maple seedlings.
Blake MacDonald's experiment to show the impact of water supply: weekly vs. fortnightly watering on growth of hard maple seedlings.
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Blade scarification using D8; 2-3 acres/hour.
Blade scarification using D8; 2-3 acres/hour. N.B. frozen soil under where blade is scraping. Northwestern Pulp & Power. Hinton
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Blackstone Lake - Views of fire boundary - 1961 fire
Aerial photographs of the boundary where the fire damage stops near Blackstone Lake, Ontario. The photographs show where the landscape is visually split between the brownish/grey burnt forest and the green unburnt forest. The lake can also be seen in…
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