Abstract
The 131J- ion applied as KJ solution to lanolin ring on the leaf moved quickly to other parts of the leaf, however, it was transported to the stem and axillary bud in small amount. The 131J- ion from potassium iodide was absorbed very fast by privet (Ligustrum vulgare L.). By 45 min after treatment about half of the applied ion was absorbed. This result was also confirmed In field experiments with non labelled KJ with privet and with Spiraea x bumalda cv. Froebelii during 2 year experiments. In the conditions of high air humidity (95% r.h.) much more K131J was absorbed than at low air humidity (50% r.h.) at the same temperature (23°). Also at a relatively high temperature (23°) the uptake was more intensive than at a low temperature (4°), at the same air humidity (95% r.h.).