Abstract
Graft combinations of potato and tomato were cultivated to study the dry matter and mineral nutrient distribution in plants with and without one or two storage organs. N and P entered the fruits and tubers in an order of magnitude roughly comparable to dry matter distribution; K entered them even more liberally than would correspond to their relative dry matter content, whereas Ca and Mg showed a distribution pattern completely different from that of dry matter or N, P and K. Obviously, it is very difficult to bring sizeable quantities of Ca and Mg into fruits and tubers. This observation is discussed with reference to the prevention of so-called calcium and magnesium deficiency disorders in fruits and with regard to possible changes in leaf analysis values obtained for some of the major nutrients.
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