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Power lines within woodlands
Within forest power line
Power heads of scarifier
Power heads of scarifier mounted on Koehring & developed by Great Lakes Forest Products, Thunder Bay
Potassium fertilized Douglas fir
Potassium fertilized Douglas fir, sampling cones. Photo Mike Meagher. Mt.Prevost near Duncan
Potassium fertilized Douglas fir
Potassium fertilized Douglas fir, sampling cones. Person is Bruce Devitt. Photo Mike Meagher. Mt. Prevost near Duncan.
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.
Potassium Deficiency, Healthy and Two Degrees of Chlorosis
Potassium deficiency, healthy and two degrees of chlorosis. White spruce, 3+0, nutrient deficiency, potassium.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.