ISSN:
1573-5036
Keywords:
Black pine
;
Calcareous soil
;
Foliar tissue
;
Leached-brown soil
;
N−S−P status
;
Podzolic soil
;
Seedlings
;
Spruce
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The different forms of nitrogen, sulphur and phosphorus were measured in the foliar tissue of spruce and black pine seedlings grown in the greenhouse in 3 soils (brown, podzolic and calcareous) with or without a supply of nitrogen. This paper is a complementary study to our work on adult trees in the same sites, confirms our previous results and leads to the following observations: - a nitrogen supply (NH4NO3) resulted in an accumulation of inorganic nitrogen (NH 4 + ) and of organic soluble nitrogen in foliar tissue, - when the limiting factor for protein synthesis was nitrogen, accumulation of soluble sulphur and soluble phosphorus occurred in foliar tissue, - sulphur and nitrogen were strongly linked with protein metabolism while there was relative independence between phosphorus and nitrogen, - insoluble sulphur/insoluble nitrogen ratio (SI/NI) was characteristic of each species and was independent of the nitrogen treatment. In a practical application of foliar diagnosis, foliar soluble contents of nitrogen, sulphur and phosphorus in the leaves appeared to be good indicators for determining nutrient levels of these elements in trees.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02220190
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