Plant and Soil

, Volume 77, Issue 2–3, pp 391–394 | Cite as

Foliar chemical concentrations in red alder stands of various ages

  • D. S. DeBell
  • M. A. Radwan
Short Communications


Six stands of red alder (Alnus rubra Bong.) were sampled to assess the relationship between stand age and foliar chemical concentrations. The stands ranged in age from 9 to 45 years, and were located near Olympia, Washington, on sites of similar soil, aspect, and slope. Foliage was collected in July, and concentrations of most essential nutrients and aluminum were determined. Foliar concentrations of these elements varied among the different stands. Highest concentrations of N, P, Ca, S, Fe, and Al were found in trees of the youngest stand. Concentrations of N, P, S, and Fe were negatively correlated with stand age. The strongest correlation was obtained with P (r=−0.96,P<0.01), followed by N (r=−0.85,P=0.03). Results suggest that declining growth and deterioration of red alder stands with age may be related, at least in part, to limiting supplies of essential nutrients, especially P, N, and S.

Key words

Alder Alnus rubra Essential elements N2-fixation Nutrition Stand deterioration 


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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1984

Authors and Affiliations

  • D. S. DeBell
    • 1
  • M. A. Radwan
    • 1
  1. 1.Forestry Sciences Laboratory, Pacific Northwest Forest and Range Experiment StationUSDAOlympiaUSA

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