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３年生苹果树、桔苹品种，６月份用Ｃ１４标记的Ｂ９涂叶，从处理后２４小时开始到１２月份，分期整株取样测定放射性回收总量及其在各组织之间的分布。树体内未起变化的Ｂ９所占放射性比率也进行了测定。 每株树放射性总量随时间没有规律的变化，平均总回收率是２３％。 Ｂ９迅速运转遍布正个植株，４８小时内除根以外所有组织均能测到。由处理叶片转移出来的放射性物质，一半以上最终由果实累积。树体内Ｂ９分解很慢；处理后两周，每一组织中的放射性物质有７０－８０％是未经变化的生长抑制剂Ｂ９。此数值在所有组织内（果实除外）随时间而平稳下降，但果实中的Ｂ９始终维持稳定的高比例。应用于叶片的８０ｍｇＢ９中有２０ｍｇ被叶片吸收：其中近一半被同化；约７ ｍｇ存留于采收果实中； ２ｍｇ在落叶中； ２ｍｇ左右遗留在树体骨架内。试验结果结合有关Ｂ９运转和代谢的先前报导进行了讨论。
3-year-old apple tree, orange apple varieties, June C14-labeled B9 leaves, from 24 hours after treatment to December, staging whole plant sampling to determine the total amount of radioactive recovery and its distribution among the various organizations. The proportion of unchanged radioactive B9 in the tree was also measured. The total radioactivity per plant did not change regularly over time, with an average total recovery of 23%. B9 quickly run all over the plant, within 48 hours, except for the root of all tissues can be measured. More than half of the radioactive material transferred by the treatment leaves eventually accumulates from the fruits. B9 decomposition is very slow in the tree; two weeks after treatment, 70-80% of the radioactive material in each tissue is unaltered growth inhibitor B9. This value declined steadily over time in all tissues (except fruit), but the B9 in fruits maintained a consistently high proportion. Of the 80 mg B9 applied to the leaves, 20 mg was absorbed by the leaves: nearly half of them were assimilated; about 7 mg remained in the harvested fruit; 2 mg in the leaves; and 2 mg remained in the tree trunk. The results of the experiments are discussed in conjunction with previous reports on B9 functioning and metabolism.