Twenty Years of Natural Loblolly and Shortleaf Pine Seed Production on the Crossett Experimental Forest in Southeastern Arkansas
Abstract:Loblolly and shortleaf pine (Pinus taeda L. and P. echinata Mill., respectively) seed crops were monitored for 20 consecutive years (1980–1981 through 1999–2000) using seed-collection traps in natural stands on the Upper Coastal Plain of southeastern Arkansas. Each seed-collection period began on October 1 and continued through the end of February of successive years. Sound seeds were separated from void seeds by use of a cut test. During 20 yr, sound seed production ranged from 0 to 2,000,000/ac. There were six bumper seed crops (>800,000 sound seeds/ac), nine good seed crops (40,000—800,000 sound seeds/ac), and five poor seed crops (<40,000 sound seeds/ac). Because no poor seed crops occurred back-to-back, the seed supply was adequate for successful natural pine regeneration over the entire monitoring period. During 8 yr of adequate seed production, when weekly seed counts were made, seed dispersal always peaked in early November; therefore, site preparation should be completed before November to maximize seedling catch. South. J. Appl. For. 25(1):40–45.
Keywords: Natural pine regeneration; P. taeda L.; Pinus echinata Mill.; Upper Coastal Plain; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; loblolly pine; natural resource management; natural resources; seed crops; seed dispersal; shortleaf pine; uneven-aged management
Document Type: Miscellaneous
Affiliations: USDA Forest Service, Southern Research Station, P.O. Box 3516 Monticello, AR, 71656-3516
Publication date: February 1, 2001
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