'expected' potassium concentrations

[AW14 at VAX.YORK.AC.UK]

Does anybody know how much potassium I would expect to find in the leaves,
swollen hypocotyl and roots of the radish plant?! I am having a few 
problems with my methodology and only have potato tuber data for comparison.
Thanks in advance and MERRY CHRISTMAS ONE AND ALL (which reminds me; if 
reindeer eat Sphagnum moss does'nt that cause terrible damage to the boggy
bits in Lapland ?).