Fertilizer-derived ammonia volatilization for both water regimes
reached peak values on the second day after each fertilization event
(Fig. 2B). Already 4 days after fertilization the ammonia volatilization
had declined dramatically and 6 days after fertilization
the values had fallen to the low level found between fertilizations.
After the peak, following the third fertilization, and until harvest
the ammonia volatilization was negligible.