Six-year beechnut production in New Hampshire
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Res. Pap. NE-677. Radnor, PA: US. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 6 p.
Beechnut production and losses were studied over a 6-year period in 41 northern hardwood stands ranging in age from 10 to 140 years in the White Mountains of New Hampshire. Beechnut production increased consistently with stand age or d.b.h. of dominant trees and percentage of basal area composed of beech. Losses to insects, rodents, and birds before the seed reached the ground ranged from 24 to 100 percent; insects caused the greatest losses. Good seed years occurred about every third year.
Leak, William B.; Graber, Raymond E. 1993. Six-year beechnut production in New Hampshire. Res. Pap. NE-677. Radnor, PA: US. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 6 p. https://doi.org/10.2737/NE-RP-677.