Skip to main content

Response of Vesicular-Arbuscular Endomycorrhizal Sweetgum Seedlings to Three Nitrogen Fertilizers

Buy Article:

$29.50 plus tax (Refund Policy)


Sweetgum seedlings were grown outdoors in pots filled with fumigated soil, were inoculated with the endomycorrhizal fungus Glomus etunicatus, and were treated with fertilizers to determine growth response to different sources and levels of nitrogen. Ammonium sulfate, ammonium nitrate, and potassium nitrate were applied eight times during the growing season, at seasonal rates equivalent to 0, 140, 280, 560, 1,120, or 2,240 kg N/hectare. Application of 560 kg N/ha as ammonium sulfate or ammonium nitrate produced seedlings with greatest mean heights, diameters, and top weights. The 280 and 560 kg N/ha treatments of each N source produced the greatest percentages of mycorrhizal roots and highest intensities of infection per infected root segment. Mycorrhizal development was maximum in treatments that produced maximum growth. Ammonium nitrate was considered superior to ammonium sulfate because of a lesser tendency of the former to acidify the soil. Forest Sci. 27:413-420.

Keywords: Glomus etunicatus; Liquidambar styraciflua; VA endomycorrhizae

Document Type: Journal Article

Affiliations: Principal Silviculturist, Institute of Mycorrhizal Research and Development, Southeastern Forest Experiment Station, Athens, Georgia 30602

Publication date: June 1, 1981

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

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
  • Submit a Paper
  • Membership Information
  • Author Guidelines
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more