Effect of different levels of nitrogen on growth and yield of radish was studied at Gomal University, D. I. Khan, Pakistan during winter season 2007. Five N levels (50, 100, 150, 200 and 250 kg/ha) alongwith a control (no nitrogen) were tried. The results showed that higher N levels gave better results for all parameters studied. Maximum number of leaves (18.70, 18.17 and 18.10), leaf length (33.33, 32.80 and 31.10 cm), weight of leaves (160.67, 132.83 and 140.82 g), root length (23.77, 22.10 and 22.23 cm), root diameter (4.43, 4.87 and 4.15 cm), root weight (139.28, 122.73 and 127.16 g) and yield (99.88, 85.10 and 89.24 t/ha) were recorded when N was applied @ 200, 250 and 150 kg per hectare, respectively. [ABSTRACT FROM AUTHOR]