THE NUTRIENTS RECOVERY FROM SPHAGNUM PEAT, BROWN COAL AND BARK SUBSTRATES AS MEASURED BY SOIL TESTING UNIVERSAL PROCEDURE
It is interesting to know for this procedure the indexes of nutrients recovery from main plant substrates that are and will be used in horticulture. The nutrient recovery index is useful for establishing the fertilizer dose necessary for the available nutrient content increase in the substrate to the standard level. It is expressing the ratio of nutrient dose applied to substrate to nutrient amount recovered by soil testing procedure and is valid for given fertilizer form and soil testing procedure.
This paper presents the nutrients recovery indexes as measured by universal soil testing procedure right after fertilizer application to substrate and later at different terms during incubation process. Thus the variations in the availability of fertilizer nutrient as caused by chemical and microbiological mobilisation and immobilisation processes during substrate incubation has been regarded.