Effect of Metal Chelates on Growth of Corn in Solution Cultures.

Abstract
Ethylene diamine tetraacetic acid in low concentrations (10 micromoles and below) was distinctly beneficial to growth of corn, especially to its root development, in nutrient cultures under greenhouse conditions. The composition of the nutrient solution differed from conventional types in containing P as ethyl ammonium phosphate and calcium as the acetate. The magnesium salt of "Versenol", if supplied in non-toxic dilution and with proper adjustment of the composition of solution, can substitute successfully for magnesium sulfate as a source of magnesium for corn grown in solution cultures.