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This article in AJ

  1. Vol. 58 No. 1, p. 77-80
    Received: May 29, 1965

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Reduction of Nitrogen Losses Under Irrigation by Coating Fertilizer Granules1

  1. M. D. Heilman,
  2. J. R. Thomas and
  3. L. N. Namken2



Resin-coated and noncoated NH4NO3 fertilizers were compared on irrigated soils with free drainage.

In the greenhouse studies, coated NH4NO3 at rates of 150, 300, 600, and 1200 mg N per pot were more efficient than noncoated NH4NO3 at the same rates in increasing forage yield and N content of blue panicgrass.

Coating the fertilizer particles did not affect cabbage yields under field conditions. However, increasing the coating thickness significantly reduced the N content of the cabbage.

N uptake and cabbage yields decreased significantly as soil moisture availability decreased.

NO3 and mineralizable N levels in the soil indicated that the resinous membrane, by controlling fertilizer dissolution, reduced N leaching losses.

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