The present study was conducted at district Kom Ombo sugar cane farms, (latitude of 24^o 28^o N and longitude of 32^o 57^o E), Aswan Governorate, in the two seasons of 2015/2016 and 2016/2017 including plant cane and 1^st ratoon crops, respectively. To study the effect of harvesting age and phosphorus fertilization levels on yield and quality of some sugar cane varieties. Field experiment included twenty-seven treatments represented the combinations among three harvesting ages (10, 11 and 12 months) three phosphorus fertilization levels [30, 45 and 60 kg P₂O₅/fad.] and three sugar cane varieties [G.T. 54-9, G.2003-47 and G.2004-27]. Randomized complete block design with three replications laind aut in split-split plots arrangement.