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Abstract
DTPA (diethylene triamine pentaacetic acid) (100 μg/g soil) increased the leaf/stem ratio of Ni, Zn, Cu, and Mn in PI54619–5–1 soybeans (Glycine max L.). The greatest increase for Ni was at the lowest soil pH values while that for Zn was at the highest pH values. The results add strength to the concept that under some conditions chelating agents are absorbed by plants and translocated to shoots at least at moderately high levels of DTPA.