Abstract
Abstract Six plant species were grown in a flat of Yolo loam soil (fine‐silty, mixed, thermic Typic Xerorthents) which had been uniformly blended with 133 Cu, 50 Co, 100 Cd, 67 Ni, 13 Li and 133 Zn as μg/g soil. The trace metals stopped new growth of bush beans (Phaseolus vulgaris L. Improved Tender‐green), inhibited growth of corn (Zea mays L. Golden Cross), but did not inhibit growth of mint (Mentha viridis), barley (Hordeum vulgare L. Atlas), or wheat (Triticum aestivum L.). Mineral analyses were made of leaves on shoots of the plants and from the data, ratios of various elements were calculated for each species by a computer program. Ratios of element pairs for different plant species and ratios of one species to another for given elements indicated common relationships among Zn, Cu, Fe, Mn and Cd.
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