Two field trials were conducted at El-Mattana Agricultural Research Station (Luxor Governorate) planted as a spring plant cane in 2009/2010 and 2010/2011 seasons and the 1^st ratoon crops grown in 2010/2011 to study the effect of delivery delaying periods (1, 4 and 7 days) on yield and quality of two promising sugar cane varieties (G.98-28 and G.99-80 beside G.T.54-9). The results indicated that G.98-28 surpassed G.T.54-9 and G.99-80 varieties, attaining the lowest values of brix% and stalk fresh weight losses%. While, the highest cane and sugar yields/fed, purity% and sugar recovery%., respectively in plant canes and 1^st ratoon crops. Brix% and stalk fresh weight loss% tended to increase as post harvest storage periods were prolonged up to 7 days after harvest, while, sucrose%, purity%, sugar recovery% as well as cane and sugar yields/fed decreased as the period after harvesting was extended. The interaction between delivery delaying periods and sugarcane variety were significantly differed for sugar recovery%, cane and sugar yields/fed in the 1^st plant cane and 1^st ratoon crops. Delivery of sugarcane immediately after harvesting to the mill is recommended to attain the best quality and maximum cane and sugar yields.