Reduction of Nitrogen Losses Under Irrigation by Coating Fertilizer Granules1
- M. D. Heilman,
- J. R. Thomas and
- 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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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