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Effectiveness of 400-Foot Isolation Around a Slash Pine Seed Orchard

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Abstract:

In an experiment designed to determine the effectiveness of a 400-foot-wide isolation zone for a five-acre seed orchard, all male flowers within the orchard were removed prior to pollination. Female cones borne the same year developed normally and produced normal yields of germinable seed. Isolation, therefore, was not effective under these conditions. Studies designed to determine how much contamination occurs under normal conditions, with a good pollen crop on seed orchard trees, are urgently needed.

Document Type: Journal Article

Affiliations: Principal Plant Geneticist, Southeastern Forest Expt. Sta., Forest Service, U.S. Dept. Agric. Olustee, Fla.

Publication date: 1967-11-01

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

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