Field experiment was carried out in 2011/ 2012 and 2012/ 2013 growing seasons to study the effect of integration between some agriculture practices i.e. date of sowing (first of Sep., Oct., and, Nov.), source of nitrogen (Nitrate and Urea) and cultivars kinds (Pleno, Kawmera and Ras poly) of sugar beet on yield and quality of sugar beet and its relation to disease severity of Cercospra leaf spot. Disease severity% (DS) of Cercospra leaf spot significantly affected by integration between agriculture practices in both seasons 2011/ 2012 and 2012/ 2013. In this regard 1st Nov. it gave the highest significant decrease of DS of Cercospora leaf spot while sowing at the 1st Sep. recorded the lowest effect on DS in both seasons. Pleno cv. was the highest susceptible to Cercospora leaf spot while, cv. Kawmera recorded the lowest DS in both seasons and under all date of sowing. Whereas nitrate as a source of N enhances of the ability of cultivars in resistance of Cercospora leaf spot compared to Urea in all of planting timing during the two successive seasons. On the other hand, sugar beet yield and yield components as well as sucrose quality were significantly affected by integration between agriculture practices in both seasons. Root fresh weight and root yield as well as TSS, sucrose %, purity % and sugar yield (ton/fed) were recorded the highest significantly increase when Kawmera cv. planting in 1st Nov. and treated with Nitrate as a source of N in both seasons. While its give the lowest values when Pleno cv. planting in 1st Sep. and treated with Urea as a source of N during the two growing seasons 2011/ 2012 and 2012/ 2013.