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Drainage and Nutrient Effects in a Field Lysimeter Study: II. Mineral Uptake by Corn¹

ABSTRACT

The mineral uptake by corn (Zea mays L.) was studied in field lysimeters for the following variables: constant water table (WT) depths, intermittent flooding, and two levels each of N and the micronutrients Zn and Cu. The WT depths. of 15 and 30 cm and intermittent flooding during early growth decreased the ear leaf concentrations of N, P, K, Zn, Cu, and B and increased the leaf concentrations of Al, Fe, Mn, and Mo. Applications of N, Zn, and Cu increased the concentrations of N, P, Zn, Cu, B, Mn, and Fe but decreased that of K. Mineral uptake under wet soil conditions was associated with reducing conditions, inhibited soil mineralization and an increase in soil pH.

¹ Contribution from the Department of Agronomy, Ohio Agr. Res. and Development Center, Journal Article no. 70-69. The authors are appreciative for spectrographic analyses by Dr. J. B. Jones.

² Respectively, Senior Research Fellow, Dept. of Soil Science, University of Sydney; and Professor of Agronomy, The Ohio State University and the Ohio Agr. Res. and Development Center. The senior author was formerly Research Associate, The Ohio State University.

Received for publication July 29, 1969. Accepted for publication December 5, 1969.