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Agronomy Journal Abstract -

Phosphorus-Iron and Phosphorus-Zinc Relationships in Corn (Zea mays L.) Seedlings as Affected by Mineral Nutrition1


This article in AJ

  1. Vol. 63 No. 1, p. 36-39
    Received: Apr 13, 1970

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  1. D. C. Adriano,
  2. G. M. Paulsen and
  3. L. S. Murphy2



The P-Zn and P-Fe relationships in corn (Zea mays L.) seedlings as affected by high P levels and low and high levels oil other nutrients, varied individually, were determined. With high P levels, shoot growth was increased only by high Zn, but was decreased by deficiencies of other nutrients. N and K favored P nutrition more than Fe or Zn nutrition. Ca antagonized P, Zn, and Fe, while Mg synergized P and Zn but not Fe. Similarly, Cu and Mn antagonized shoot P and Fe concentrations and had little effect on shoot Zn concentrations. The most marked interaction at high P levels was between Fe and Zn, which mutually antagonized translocation more than absorption.

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