Beans ( Phaseolus vulgarus ) and potatoes ( Solanum tuberosum ) were grown using a split‐medium technique that permitted Zn to be supplied to the plants from a soil medium while variable levels of P were supplied from a solution. A balance between P and Zn levels was attained through trial and error so that only the highest level of P induced interveinal chlorosis and stunting. In both crops, P induced the deficiency without causing a decrease in the Zn nutritional status of the plants. Increasing the soil Zn level at a given P level resulted in plants with normal growth. The results are interpreted to support the hypothesis that normal metabolism is dependent upon a physiological balance between P and Zn.
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Boawn et al. (1968) studied this question.