Thrush aircraft demonstrating herbicide application

Thrush aircraft used for herbicide applications. J.D.Irving

Thrush aircraft used for herbicide applications. J.D.Irving

Black spruce planted in 1965. Camp 16. Persons are Lou Appleby of Weld wood and Martin Broeren of M&B. J.D,Irving.

Black spruce planted 1965. Camp 16. Persons are Lou Appleby of Weld wood and Martin Broeren of M&B. J.D. Irving.

Effect of fertilizer applied at time of planting in an old field. N.B. profuse growth of grass, not the spruce. Rolly Field, J.D.Irving.

Close up of frost damage on white spruce

Frost damage on white spruce compared with adjacent black spruce with no damage. Perkins Brook, Black Brook, J.D.Irving.

Late spring frost damage to planted white spruce. Black Brook, J.D. Irving.

Helicopter used in inspections. Person is Niels Kreiberg. J.D. Irving.