Author : John C. Bjorkbom
Publisher :
Page : 12 pages
File Size : 25,44 MB
Release : 1965
Category : Germination
ISBN :
Paper birch trees are generally considered prolific seeders that produce at least some seed every year and very large crops of seed periodically. Seed dispersal is widely assumed to begin in early fall and to continue through the winter months. Germinative capacity has been assumed to be fairly low.
Author : John C. Bjorkbom
Publisher :
Page : 18 pages
File Size : 39,45 MB
Release : 1971
Category : Paper birch
ISBN :
Author : John C. Zasada
Publisher :
Page : 8 pages
File Size : 33,92 MB
Release : 1972
Category : Paper birch
ISBN :
Author : Northeastern Forest Experiment Station (Radnor, Pa.)
Publisher :
Page : 522 pages
File Size : 13,38 MB
Release : 1965
Category : Forests and forestry
ISBN :
Author : Northeastern Forest Experiment Station (Radnor, Pa.)
Publisher :
Page : 710 pages
File Size : 33,88 MB
Release : 1963
Category : Forests and forestry
ISBN :
Author : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher :
Page : 538 pages
File Size : 41,45 MB
Release : 1971
Category : Forests and forestry
ISBN :
Author :
Publisher :
Page : 1240 pages
File Size : 39,69 MB
Release : 2009
Category :
ISBN :
Author : United States. Forest Service
Publisher : Forest Service
Page : 1240 pages
File Size : 42,75 MB
Release : 2008
Category : Gardening
ISBN :
Author :
Publisher :
Page : 568 pages
File Size : 12,72 MB
Release : 1984
Category : Tree planting
ISBN :
Some no. include reports compiled from information furnished by State Foresters (and others).
Author : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher :
Page : 702 pages
File Size : 42,11 MB
Release :
Category : Forests and forestry
ISBN :
