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Derivation of nutritional threshold values from cumulative concentration distributions
Author(s) -
Göttlein Axel
Publication year - 2020
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.201900562
Subject(s) - beech , range (aeronautics) , mathematics , set (abstract data type) , statistics , cumulative distribution function , ecology , computer science , biology , probability density function , engineering , programming language , aerospace engineering
For many tree species nutritional threshold values are not available. Because the derivation of such values by fertilization experiments would be very time consuming and cost intensive a relatively easy method is proposed. By interpreting cumulative concentration distributions the thresholds for the range of normal nutrition as well as the threshold for deficiency can be deduced. As shown for the species spruce, pine and beech this method delivers values, which are in most cases very close to the known thresholds from literature. Provided that a suitable data set exists or can be set up the proposed procedure can be used to derive nutritional thresholds for species for which up to now no such values are available.