ISSN:
1573-5036
Keywords:
diagnostic experiment
;
needle analysis
;
nutritional status
;
Picea abies
;
vitality or compensatory fertilization
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract The response of a Norway spruce (Picea abies L. Karst.) forest, located in SW Sweden, to various combinations of nitrogen, phosphorus, potassium and dolomite was investigated two and five years after fertilization in a semi-factorial experiment. The aim has been to apply a diagnostic field test as a base for development of suitable composition of compensatory or vitality fertilizers within an area showing nutritional imbalances. Different ways of describing foliar analysis were tested: current needle (C) critical concentrations, Deviation from Optimum Percentage (DOP), and nutrient/N percentage ratios. The graphical Relative Concentration and Content change (RCC) technique was also used. Nutritional status of the control plots showed deficiency in N, P and K. According to the analyses, N alone or N together with P are the growth-limiting elements. Fertilization with N alone induced limitation of K or P. Based on our results, NPK is a suitable compensatory fertilizer at the site. The only significant difference between dolomite and non-dolomite treatments was in Ca and Mg concentrations. The effect of dolomite on Ca and Mg became more evident during the fifth season following fertilization.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1004528102242
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