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Commercial Fertilizers Increase Growth in a Yellow-Poplar Plantation

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Various nitrogen, phosphorus, and potassium commercial fertilizers applied at several rates to a 20-year-old, slow-growing yellow-poplar (Liriodendron tulipifera L.) plantation in southwestern Michigan increased height and diameter growth over a 5-year period. Adding 336 pounds of nitrogen, 73 pounds of phosphorus, and 139 pounds of potassium per acre increased height growth 100 percent and diameter growth 85 percent. Volume growth was increased over 200 percent. Leaf weight increased, color changed from a yellow-green to normal green, and leaf abscission was delayed by adding nitrogen. Height and density of weeds were greatly increased by adding nitrogen.

Document Type: Journal Article

Affiliations: Professor, Forestry Department, Michigan State University, East Lansing

Publication date: December 1, 1966

More about this publication?
  • 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.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

    Also published by SAF:
    Forest Science
    Other SAF Publications
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