Browse Items (13651 total)

Nursery provenance trial - Picea glauca from British Columbia - showing rep. boundary & 2 reps. of same tall provenance

Nursery provenance trial - Picea glauca (+ P. engelmannii) - view
of rep. showing tall strain

Picea abies - 1938 provenance trial, seed sown 1940. Marked tree for controlled x’s. 24 years of age, Denmark

PNb provenance trial - view from outside

PNs hybrids - maple

PNs & blister rust. Seedlings 3-4 years old with Ribes in bed, some resistance?

PNs & blister rust (a year later) - bed of Pw with 4 seedlings live

PNs & blister rust - grafted stock of resistant seedlings

Pisgah Forest, NC - Pinus strobus provenance trial - “Quebec” (large) on right verses Iowa (small)

Georgia Pacific Nursery, Cottage Grove, Oregon - grafting in Pis