1. Nitrate and chloride in groundwater, surface water and deep profiles of central Canterbury, New Zealand;Adams,1979
2. Effect of a ryegrass catch crop on soil inorganic-N content and simulated nitrate leaching;Alvenäs;Swed. J. Agric. Res.,1993
3. Research on Dicyandiamide as a nitrification inhibitor and future outlook;Amberger;Comm. Soil Plant Anal.,1989
4. Nitrogen-15 recovery in winter wheat as affected by application timing and dicyandiamide;Bronson;Soil Sci. Soc. Am. J.,1991
5. Soils and Agriculture of Part Paparua County, Canterbury, New Zealand;Cox,1978