Abstract
The effect of different phosphat'tc fertilizers (single superphosphate, SSP; triple superphosphate, TSP; diammonium phosphate, DAP and nitrophos, NP) on ammonia volatilization from urea applied to alluvial alkaline soil was studied under laboratory conditions. About 34% N was lost as ammonia from urea alone. Mixing of phosphate fertilziers with urea suppressed the ammonia volatilization from urea in the order:
ftP>SSP>TSP>DAP. Nitrophos, SSP and TSP suppressed the ammonia volatilization by 51%, 45% and 32%, respectively. The reduction in ammonia toss was due to delayed hydrolysis of urea by urease in the presence of acidic phosphate fertilizers. Whereas DAP increased the ammonia loss, because of stimulating the hydrolysis of urea and the
resulting high pH.
A. Hamid, M. Ahmad , M. Yaqub. (1998) EFFECT OF PHOSPHATE FERTILIZERS ON AMMONIA VOLATILIZATION FROM UREA IN ALLUVIAL ALKALINE SOIL, The Journal Soil & Environment , Volume 15, Issue (3-4).
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