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Accuracy and speed of handling of experimental seed lots of most pine and possibly other tree species may be greatly increased through the use of a photoelectric seed counting device which utilizes a vibratory parts feeder and a pre-set impulse counter. Accuracies of 96 to 99 percent were consistantly obtained at counting speeds of 150 to 250 seeds per minute for southern and Mexican pine seeds. Seeds of various shapes ranging in width from 0.03 to 0.18 inches can be accommodated by rapid adjustment of track width and counting speed. The speed and accuracy of this device in handling several thousand seed lots during the ast two seasons has fully justified our investment of $300.
Document Type: News
Graduate Student, School of Forestry, North Carolina State Univ., Raleigh
Publication date: September 1, 1966
More about this publication?
Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.