Abstract
Nuclear (ustitute for Agriculture and Biology, Faisalabad, Pakistan.
The effect of amonium chloride, ammonium sulphate and
ammonium nitrate on ammonia volatilization loss from urea applied
in atluvial alkaiine soil was studied uoder the Jaboratory conditions.
These ammonium salts suppressed the ammonia loss, Ammonium
nitrate was the moet effective and it supperssed tha ammonia loss
by about 909 when mixed with urea in the ratio of 2- ] (urea ;
AMMoaium nitrate, on N equivalent basis). The effect of difterent
Proportions of urea and ammonium nitrate on ammonia Joss Was
also studied, A highly significant Positive correlation coefficient
( r = 0.976) was found between the ratios of urea ? aramonium
nitrate and the loss of ammonia. The following ¢uuation describes
the regression line :
Y = 2.561 x —0.655
Slowing down of urea decomposition and stimulation of nitrifi-
cation by ammonium salts resulted in Suppression of ammonia loss
from urea.
