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This article in SSSAJ

  1. Vol. 16 No. 4, p. 327-330
     

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doi:10.2136/sssaj1952.03615995001600040001x

Effect of Increasing Fertilizer Concentration on Exchangeable Cation Status of Soils1

  1. F. E. Bear,
  2. A. L. Prince and
  3. S. J. Toth2

Abstract

Abstract

In a 10-year experiment, comparisons were made of the effects of fertilizers of 1-2-2 N, P2O5, and K2O ratios, applied at the rate of 1 ton of 4-8-8 an acre annually, or its equivalent in higher grades up to and including the 12-24-24, on the exchangeable cation status of two soils. The most significant general effects of all these grades were the lowering of pH values, increase in exchangeable H, reduction in exchangeable Ca and Mg, and increase in exchangeable K. There was little in the evidence to indicate any bad effects that could not readily be overcome by the use of Mg-containing liming materials as correctives.

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