Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 Background Rb and K contents, and Rb/K at the breast height in Kumotooshi cultivar

From: Radial movement of sapwood-injected rubidium into heartwood of Japanese cedar (Cryptomeria japonica) in the growing period

Sample	Rb (ppm)	K (ppm)	Rb/K
KT5
S1	3.4	650	0.0052
S2	2.8	700	0.0040
S3	3.5	1300	0.0027
H1	5.6	2100	0.0027
H2	5.7	2100	0.0027
H3	6.0	2400	0.0025
H4	5.9	2500	0.0024
KT6
S1	2.1	740	0.0028
S2	2.2	720	0.0031
S3	3.1	1100	0.0028
H1	5.4	2500	0.0022
H2	6.0	2400	0.0025
H3	6.2	2400	0.0026
H4	6.0	2500	0.0024

S1–S3 Sapwood from outer to inner part, H1–H4 heartwood from outer to inner part

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