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.

A. Hamid , M. Ahmad. (1988) Suppression of ammonia volatilization from urea through fertilizer modifica¬tions 1, effect of ammonium salts, , Volume 25, Issue 2.
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