This work reports simple techniques of isolating fulvic acid (FA) and humic acid (HA) from decomposed organic materials and the ability of these organic acids in controlling ammonia loss from urea. FA and HA could be isolated in 7 h instead of 2-7 days. FA reduced ammonia loss by 50% compared to urea alone. It also cause the highest retention of ammonium and nitrate. There was 100% ammonia volatilization control. urea-N use efficiency was 30-40%.