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Potassium deficient red pine
Potassium deficient red pine. Ed White's experiment. N.B. sweep of stems which Ed says is symptomatic of the potassium deficiency. Pack Forest. Warrensburg NY.
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Potassium fertilized Douglas fir
Potassium fertilized Douglas fir, sampling cones. Person is Bruce Devitt. Photo Mike Meagher. Mt. Prevost near Duncan.
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Potassium fertilized Douglas fir
Potassium fertilized Douglas fir, sampling cones. Photo Mike Meagher. Mt.Prevost near Duncan
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Power heads of scarifier
Power heads of scarifier mounted on Koehring & developed by Great Lakes Forest Products, Thunder Bay
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Power lines within woodlands
Within forest power line
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Pr inbred - 56 selfings - 1 marker gene
Pr inbred - 56 selfings - 1 marker gene
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Prairie north of Drumheller
Grasslands landscape at Drumheller
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Pre-commercial thinning in 20 year douglas fir.
Pre-commercial thinning in 20yr douglas fir. Interior of stand. Dewdney Public Sustained Yield Unit
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Pre-commercial thinning in 20-year douglas fir.
Pre-commercial thinning in 20-year douglas fir. N.B. chlorosis on lower foliage of some trees. Dewdney Public Sustained Yield Unit
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Pre-commercial thinning in balsam fir to 8x8 feet. spacing. Cost $208/acre ($514/hectare).
Pre-commercial thinning in balsam fir to 8x8 feet. spacing. Cost $208/acre ($514/hectare). Liverpool, Bowaters Mersey
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