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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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doi:10.2136/sssaj1960.03615995002400060028x

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

Abstract

Abstract

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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