Fig. 4From: Radial movement of sapwood-injected rubidium into heartwood of Japanese cedar (Cryptomeria japonica) in the growing periodRb content and Rb/K in Rb-injected Kumotooshi cultivar at 172 days after the treatment. KT5 (left) and KT6 (right). Note that vertical axes are in logarithm. Circles Rb content, white bars Rb/K in sapwood, gray bars Rb/K in heartwoodBack to article page