Uptake of Potassium by Red Pine Seedlings and Losses Through Leaching from Fertilizers of Various Solubility1
- H. H. Krause and
- 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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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