AMMONIUM STRESS IN ABIES-ALBA AND PICEA-A BIES

Authors
SETZER B MOHR H
Citation
B. Setzer et H. Mohr, AMMONIUM STRESS IN ABIES-ALBA AND PICEA-A BIES, Allgemeine Forst- und Jagdzeitung, 169(2), 1998, pp. 26-29
Citations number
12
Categorie Soggetti
Forestry
Journal title
Allgemeine Forst- und Jagdzeitung → ACNP
ISSN journal
00025852
Volume
169
Issue
2
Year of publication
1998
Pages
26 - 29
Database
ISI
SICI code
0002-5852(1998)169:2<26:ASIAAP>2.0.ZU;2-6
Abstract
The nitrogen stress which can be elicited experimentally in fir and sp ruce is to be attributed to ammonium. Nitrate alone, even 15 mM, has n o effect. The threshold concentration lies between 2 mM and 5 mM ammon ium. These concentrations may occur at sites with high deposition rate s. Fir responds much more sensitive than spruce. In case of spruce on optimum supply with potassiums damps the stress symptoms.