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Home → Publications → National Nursery Proceedings → 1973 → Forest Tree Breeding Studies at the University of Wisconsin-Madison

Forest Tree Breeding Studies at the University of Wisconsin-Madison

Annual variation in cone production of most conifer species is recognized as a problem in planning for seed procurement. For example, large cone crops of red pine are expected every three to five years. For fifteen years, a survey was made of cone production over the northern half of Wisconsin. Cones were counted in the tops of eighty red pines at twenty-five locations. The counts showed a cycle of roughly three years, although only one bumper crop occurred during the period.


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Details

Author(s): Donald T. Lester

Publication: National Nursery Proceedings - 1973

Event: Northeastern Area Nurserymen's Conference
1973 - Stevens Point, WI