Gnanaveirajah, N.Kumaragamage, D.2014-11-122014-11-121998Tropical Agricultural Research, 10:p.61-73https://dl.nsf.gov.lk/handle/1/12012Soil ScienceSoil fertilityNitrogen fertilizationNitrification inhibitory propertiesNeemAzadirachta indica A.Juss.Effect of neem (Azadirachta indica A. Juss) materials on nitrification of applied urea in three selected soils of Sri LankaA