The study was conducted to know the distribution of nitrogen fractions under different horticultural land use systems in Hiriyur Taluk, Chitradurga district during 2015-16. Soils were clay to sandy clay loam in texture in selected land use systems and clay content higher in sub-surface than the surface soils. The bulk density was medium to high and increased with increasing the depth. Soils were slightly alkaline to alkaline in reaction. Electrical conductivity and organic carbon were medium to high. Major portion of study area was low to medium in available nitrogen and low to medium in available phosphorus and potassium. Nitrogen fractions content were directly related with the organic carbon of the soils. Inorganic nitrogen fractions like nitrate and ammonical nitrogen showed decreasing trend with increasing the depth. Organic nitrogen fractions showed the irregular distribution with the depth it may be due to slow mineralization in the sub-surface soils as compared to surface soils. Total hydrolysable nitrogen was dominant fraction and nitrate nitrogen was the least fraction. The dynamics status of nitrogen fractions is related to organic carbon content. So frequent N fertilization with small amount but multiple times so that nitrogen concentration in soil solution may be maintained at a higher and more stable value for sustainable production of horticultural crops.