Browse Items (13654 total)
Sort by:
Close up on semimature needle blight on white pine.
Semimature needle blight on white pine. Parry Sound, Georgian Bay.
View on semimature needle blight on white pine.
Semimature needle blight on white pine. Parry Sound, Georgian Bay.
Semimature needle blight in white pine
Semimature needle blight in white pine. Parry Sound, Georgian Bay.
Red pine killed by forest pest
Red pine killed by Fomes annosus. Pack Forest, Warrensburg.
On-site demonstration of red pine study by SUNY professor
Dr. Al Leaf of SUNY, Syracuse describing his study on red pine roots, Pack Forest, Warrensburg
Dr. Al Leaf of SUNY describes his study on red pine roots at Pack Forest.
Dr. Al Leaf of SUNY, (Syracuse) describing his study on red pine roots, Pack Forest, Warrensburg
Irrigation experiment, NY. in red pines at Pack Forest
Irrigation experiment in red pines at Pack Forest, Warrensburg
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.
Norway spruce suffering from potassium deficiency (image 2)
32 yr old Norway spruce suffering from potassium deficiency. Pack Forest, Warrensburg NY. Person is Professor Ed White of SUNY.
Norway spruce suffering from potassium deficiency
32 yearr old Norway spruce suffering from potassium deficiency. Pack Forest, Warrensburg NY. Person is Professor Ed White of SUNY.