Effect of urea forms on ammonia volatilization, N recovery and yield of lowland rice in sandy and laterite soils
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Date
1993
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Publisher
Kerala Agricultural University
Abstract
An experiment was conducted to identify the best urea form which allows minimum N
loss through ammonia volatilization but simultaneously ensuring good yield in the sandy and
laterite soils of Kerala. The sulphur coated urea and urea mudball deep placement recorded
minimum N loss through ammonia volatilization (2.85% and 5.29% respectively, of the applied N).
However, application of urea supergranu lei n the reduced zone recorded the maximum grain yield
and N recovery. Though the rate of ammonia volatilization was comparable between the two soils,
yield was higher in laterite soil, irrespective of the treatments.
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Citation
Journal of Tropical Agriculture, 31(1), 53-59.