Minimizing ammonia loss from urea through mixing with zeolite and acid sulphate soil

International Journal of Physical Sciences

O. H. Ahmed¹ 

关键词: Ammonia loss;    urea;    zeolites;    acid sulphate soils.;   

DOI  :  

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

Ammonia volatilization is a major cause of nitrogen loss from surface applied urea. While all top dressed ammonia and ammonium-based fertilizers can be volatized, the potential is greatest with urea and fluid containing urea. This laboratory study compared the effect of four different urea-zeolite-acid sulphate soil mixtures on NH3volatilization and, soil exchangeable NH4and available NO3contents of an acid soil with surface-applied urea without additives. The soil used in the study was a sandy loam Typic Paleudults (Nyalau Series). The mixtures significantly minimized NH3loss by 6 to 15% compared to urea alone. These treatments also significantly increased soil exchangeable NH4and available NO3contents compared to urea without additives. The increase in the formation of NH4+over NH3and the temporary decrease in soil pH retarded urea hydrolysis at the microsite immediately around the fertilizer. Surface applied urea fertilizer efficiency could be increased by mixing it with zeolite and acid sulphate soil.

【 授权许可】

CC BY