Abstract
Abstract Corn (Zea mays L. cv. Golden Cross N.C.) and soybeans (Glycine max L. iron‐inefficient cv. PI54619–5–1) were grown in soil contaminated with combinations of Co, Ni, Cd, Li, Zn and Cu in Yolo loam soil with and without lime amendment. The objective was to further test the ability of lime (increased soil pH) to protect plants against additive and synergistic effects of combinations of multiple trace elements simultaneously. With soybeans the liming changed some additive and synergistic effects to one of protective but not in all cases. With one combination the effect was protective with and without liming. With corn the interactions tended to be protective without the liming but liming tended to increase the protective nature of the interaction. The effect of protection was characterized by. one of the various trace elements causing an antagonism against the other and not necessarily due to the decreased uptake resulting from liming. The combinations of various trace metals tended to decrease Mn up...
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