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Abstract

 

This article in SSSAJ

  1. Vol. 34 No. 2, p. 327-329
     
    Received: July 29, 1969


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doi:10.2136/sssaj1970.03615995003400020040x

Sulfur Uptake by Corn as Influenced by Ammonium and Nitrate Nitrogen1

  1. G. W. Rehm and
  2. A. C. Caldwell2

Abstract

Abstract

The effect of NH4 and NO3 ions on S uptake by corn (Zea mays L.) from a starter fertilizer was studied with the use of 15N and 35S. When both the N and S were applied as a starter, the uptake of fertilizer S was significantly increased when NH4 instead of NO3 was used as the N source. This effect was observed in young plants through 4 weeks of age. More N was absorbed by the corn plant when NH4 rather than NO3 was supplied as the N source. The N source, however, had no significant effect on the total S, SO4-S or total N content of the tissue and the corn yield.

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