Present article deals with the effect of granulated urea in different sizes (powder,1.09 and 2.17g per granule) on the yield of corn grown on calcareous sandy soil derived from loessial deposits in Fenqiu County of Henan Province.Field experiments were conducted on plots of 14.0m×2.4m in,treatments (deep placement of granules of 2 sizes and powder,broadcasting of powder and control),and on microplots which were laid in each plot separated by a bottom less less square cylinder (50cm×40cm×40cm).¹⁵N-labelled urea was applied in microplots.In all the treatments,irrigation was carried on immediately after applying the fertilizer.