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This article in AJ

  1. Vol. 61 No. 4, p. 632-634
     
    Received: Jan 25, 1969
    Published: July, 1969


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doi:10.2134/agronj1969.00021962006100040044x

Sulfur Effects on the Elemental Composition of Alfalfa (Medicago saliva L.) and Corn (Zea mays L.)1

  1. A. C. Caldwell,
  2. E. C. Seim and
  3. G. W. Rehm2

Abstract

Abstract

Forms of S at various rates were applied to alfalfa (Medicago saliva L.) and corn (Zea mays L.) grown on 3-deficient soil. Tissue samples were collected and analyzed for S, N, P, K, Ca, Mg, Zn, AI, St, Mo, Co, Na, Si, and Ba. Sulfur content of alfalfa increased with increasing rates of S applied. The N content of both young and mature alfalfa was increased, but P content was confistently decreased by increasing rates of S. Elemental S at 112 kg S/ha, applied annually, increased the Mn content of alfalfa and decreased the B content. In general, levels of other elements in alfalfa were not consistently affected by S application. Sulfur increased the levels of S in corn, and also increased the N content in the mature plant. Phosphorus in corn was decreased but no consistent effect of S was found on the other nutrient elements in corn.

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