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This article in AJ

  1. Vol. 50 No. 4, p. 180-182
    Received: July 24, 1957

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Effect of Depth of Placement of Exchangeable Ammonium-nitrogen on Rice Paddy1

  1. A. Wahhab and
  2. M. N. Azim2



Placement of exchangeable NH4-N (NH4-clay) at 2 inches below the surface gave highest yields of paddy grains and total dry matter. Deeper placements induced the vegetative growth more than grain formation. The difference in yields of surface application and 2-inch placement was not significant.

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