N, S, P status and protein synthesis in the foliage of Norway spruce (Picea abies (L.) Karst) and Austrian black pine (Pinus nigra Arnold var. nigra)

Clement, A.; Gessel, S.P.

Plant and Soil 85(3): 345-359

1985


ISSN/ISBN: 0032-079X
DOI: 10.1007/bf02220190
Accession: 001413837

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Abstract
The different forms of nitrogen, sulphur and phosphorus were measured in the foliar tissue of spruce and black pine seedlings grown in the greenhouse on brown, podzolic and calcareous soils with or without a supply of nitrogen (NH4NO3). The nitrogen supply resulted in an accumulation of inorganic nitrogen (NH4+) 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. The insoluble sulphur/insoluble nitrogen ratio (SI/NI) was characteristic of each species and was independent of the nitrogen treatment. In foliar diagnosis, soluble contents of nitrogen, sulphur and phosphorus in the leaves appeared to be good indicators of deficiency of these elements in trees.

N, S, P status and protein synthesis in the foliage of Norway spruce (Picea abies (L.) Karst) and Austrian black pine (Pinus nigra Arnold var. nigra)