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Agronomy Journal Abstract -

Fractionation of Phosphorus in Kansas Soils and Its Significance in Response of Wheat to Phosphate Fertilizers1


This article in AJ

  1. Vol. 49 No. 7, p. 354-358
    Received: Jan 8, 1957

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  1. M. S. Bhangoo and
  2. F. W. Smith2



Phosphorus of seven surface soils and corresponding subsoils was fractionated. Iron and aluminum phosphates accounted for more than half of the total P in surface material and about two-thirds of that in subsoils. Organic P represented about one-third of the total P in surface soils but only about one-fifth in subsoils; “adsorbed” P and acid soluble P represented about 10% and 5%, respectively, of the total. Two distinctly different methods were used to measure “chemically available” phosphorus. Each method was satisfactory.

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