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- Sharpley, A.N.; Syers, J.K.; Tillman, R.W.
- Water, air, and soil pollution 1983 v.20 no.4 pp. 425
- ammonium nitrogen; nitrate nitrogen; surface water; agricultural runoff; pastures; urea fertilizers; fertilizer application; drinking water; water quality; eutrophication; New Zealand
- ... The effect of a surface application of urea on the transport of N in surface runoff from permanent pasture in New Zealand was investigated under natural rainfall conditions. Maximum concentrations of NH4- N(3.6 mg l-1) and NO3-N(4.5 mg l-1) in surface runoff were attained 3 and 1 week, respectively, following urea application (60 kg N ha-1). Amounts of NH4-N, NO3-N, and total N transported in surf ...