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This article in SSSAJ

  1. Vol. 24 No. 6, p. 513-515
    Received: Feb 10, 1960
    Accepted: May 4, 1960

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Uptake of Potassium by Red Pine Seedlings and Losses Through Leaching from Fertilizers of Various Solubility1

  1. H. H. Krause and
  2. S. A. Wilde2



The uptake of K by red pine seedlings and the losses through leaching from irrigated, coarse-textured soil treated with fertilizers of different solubility were determined by plant tissue analyses and by the use of tension lysimeters. Potassium chloride, potassium-calcium metaphosphate and 20-mesh syenitic granite were used as sources of K. Considerable fractions of K were lost from applications of readily soluble KCl. The pattern of K leaching followed the rate of nitrification in the soil. Potassium metaphosphate possessed a greater stability and fertilizing value than KCl. The fraction of available K of the applied granite became exhausted during the second growing season.

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