Browse Items (13081 total)
Sort by:
People observing a potassium deficient red pine plot
Sven Heiberg's original potassium deficient red pine plot. See Heiberg & Loewenstein, 1958 and Heiberg and White 1951. Pack Forest Warrensburg NY
Not viewed
People seated behind automobile
People seated behind automobile prop. People in photo: (left to right) Mr. A. Rassilainen, Mrs. A. Rassilainen, Mr. Haldi. Donor: Mrs. R. Adams (Wilen).
Not viewed
People Standing in a Forest
A photograph of two people standing in a field surrounded by trees.
Not viewed
Perched erratic- granite gneiss, Parry Sound, Ont.
Perched erratic- granite gneiss, Parry Sound, Ont.
Not viewed
Peridemium harknessii on jack pine at base causing death of planted tree at 12 years.
Peridemium harknessii on jack pine at base causing death of planted tree at 12 years. Abitibi-Paper, Spruce River Road
Not viewed
Peridermium harknessii gall on lodgepole pine.
Peridermium harknessii gall on lodgepole pine. Northwestern Pulp & Power, Hinton
Not viewed
Peridermium harknessii galls on jack pine.
Peridermium harknessii galls on jack pine. Sapawe
Not viewed
Peridermium harknessii galls on jack pine.
Peridermium harknessii galls on jack pine. Sapawe
Not viewed
Peridermium harknessii on jack pine.
Peridermium harknessii on jack pine. N.B. repeated branching. Sapawe
Not viewed
Pest (budworm) damage on tree needles
Budworm damage on red spruce. Black Brook, J.D.Irving.
Not viewed