A field experiment was conducted at Lakhaoti during 1993-94 and 1994-95 to assess the impact of nitrogen levels (0,60, 120, and 180 kg/ha) on juice quality and sugar yield of some promising sugarcane genotypes ('Co 1148', 'CoS 767', 'CoS 687' and 'CoJ 64') planted in spring season. Genotypes differed significantly in terms of per cent extraction brix, sucrose, purity, available sugars, reducing sugars, millable canes, cane yield, and commercial cane sugar (CCS) yield. 'CoJ 64' had the best quality, followed by 'CoJ 687', 'Co 1148' and 'CoS 767'. However, the highest sugar yield was recorded with 'Co 1148'. Nitrogen had an adverse effect on juice-quality attributes. The highest commercial cane sugar yield was obtained with 120 kg N/ha and it declined by 8.2% with further higher dose of 180 kg/ha.
