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Anna Maria Jönsson

Professor

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Frost sensitivity and nutrient status in a fertilized Norway spruce stand in Denmark

Author

  • Anna Maria Jönsson
  • M Ingerslev
  • K Raulund-Rasmussen

Summary, in English

The aim of this study was to assess the effect of the N, P and K status on frost sensitivity of Norway spruce needles in a fertilization experiment situated in a nutrient poor 29-year-old Picea abies stand in western Denmark. The relative difference in frost sensitivity among trees was assessed by an index of injury, based on conductivity measurements of ion leakage from needles. Despite fertilization, all trees indicated N, P and K deficiency. The foliage, collected in late winter, was generally not very frost sensitive, but foliage from trees with the lowest K and P status were more sensitive to frost, and the current year needles were more sensitive than the second and third year needles. The advancement of bud burst was assessed in May. Trees with a relatively high N concentration in the current year needles had a more advanced bud burst than trees with a lower N concentration, increasing the risk for frost damage by a temperature backlash.

Department/s

  • Dept of Physical Geography and Ecosystem Science

Publishing year

2004

Language

English

Pages

199-209

Publication/Series

Forest Ecology and Management

Volume

201

Issue

2-3

Document type

Journal article

Publisher

Elsevier

Topic

  • Ecology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1872-7042