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Notes: Effects of Nitrogen Fertilization and Pisolithus tinctorius on Quercus rubra Seedling Root and Top Development

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Quercus rubra seedlings were grown for 100 days in medium with and without vegetative inoculum of Pisolithus tinctorius. At 40 days after planting, nitrogen in the form of sodium nitrate or ammonium chloride was added at rates of 13.3 or 53.2 mg nitrogen per seedling. All inoculated seedlings were ectomycorrhizal and all uninoculated seedlings were free of ectomycorrhizae at the end of the growing period. Ectomycorrhiza formation was significantly enhanced with sodium nitrate at the 53.2 mg rate. Root and leaf nitrogen, as well as seedling growth, did not differ significantly between any treatments. Root and leaf phosphorus was significantly greater for nonmycorrhizal seedlings than mycorrhizal seedlings. Leaf phosphorus of nonmycorrhizal seedlings fertilized with ammonium chloride was significantly greater than leaf phosphorus of nonmycorrhizal seedlings fertilized with sodium nitrate. Leaf phosphorus percent was negatively correlated to the percentage of ectomycorrhizal short roots. Forest Sci. 30:124-128.

Keywords: Northern red oak; containerized seedlings; ectomycorrhizae; inoculation; nitrate and ammonium fertilization

Document Type: Miscellaneous

Affiliations: Assistant Professor of Agronomy, Department of Agronomy, University of Maryland

Publication date: March 1, 1984

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.

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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