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This article in AJ

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


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doi:10.2134/agronj1957.00021962004900070004x

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

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

Sypnosis

Sypnosis

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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