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Fertilization Increases Growth of Loblolly Pine and Ground Cover Vegetation on a Cecil Soil

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Application of 198 kg-N/ha, 7 kg-P/ha, and 26 kg-K/ha over a 2-year period increased growth of 4-year-old loblolly pine (Pinus taeda) as well as biomass production of ground cover vegetation on a Cecil sandy clay soil on a piedmont site in North Carolina. Four fertilized and four unfertilized loblolly pines were destructively sampled to monitor aboveground dry weights of tree components. Ground cover biomass and soil nutrient content were measured on 2-m-square plots located around each of the eight pines examined. Loblolly pine diameter and volume growth were increased by fertilization as well as oven-dry weight of foliage and stem, needle length, and oven-dry weight per 100 fascicles of current year's needles. Fertilization altered the composition of ground cover species present with fewer species observed on fertilized than on check plots. Although the number of species present on the fertilized plots was fewer, the total biomass production of ground cover vegetation was 30 percent greater on the fertilized than on the check plots. Forest Sci. 25:169-174.

Keywords: Pinus taeda; nitrogen; nutrient cycling

Document Type: Journal Article

Affiliations: Graduate Research Assistant, North Carolina State Forest Fertilization Cooperative, School of Forest Resources, N.C. State University, Raleigh, N.C. 27650

Publication date: 1979-03-01

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.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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