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This article in AJ

  1. Vol. 55 No. 6, p. 515-518
     
    Received: Feb 11, 1963
    Published: Nov, 1963


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doi:10.2134/agronj1963.00021962005500060003x

Leaching and Gaseous Losses of Nitrogen From Some Nontilled California Soils1

  1. R. B. Harding,
  2. T. W. Embleton,
  3. W. W. Jones and
  4. T. M. Ryan2

Synopsis

Synopsis

Leaching and volatile losses of N from some southern California soils were studied when various nitrogenous fertilizers were broadcast and unincorporated. Under sprinkler irrigation, substantial leaching losses occurred with Ca(NO3)2. Manure was an inefficient source of N. Substantial volatile losses of NH3 occurred with urea on calcareous as well as acid soils. In comparative studies of atmospheric NH3 loss, the order of magnitude was urea>(NH4)2SO4>NH4NO3> urea-formaldehyde.

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