Two field experiments was conducted at El-Serw Agricultural Research Station, Damietta Governorate, Egypt during 2012/2013 and 2013/2014 seasons. The objective of this investigation was aimed to study the effect of three sowing dates (mid September , first October and mid October) and soil application of sulphur fertilizer in the form of Calcium poly sulfide (CaSO₄ 30% sulphur) at the levels of (zero, 100 and 200 kg CaSO₄/fed., mixed with soil) which were applied at age 45 and 75 day, for Soltan cultivar. A split plot design with four replicates was used. The main plots were assigned to sowing dates, whereas, soil application with CaSO₄ were distributed in the sub plots. The results can be summarized as follows:- 1- Lating planting sugar beet until mid October due to significant increase in root dimension and root fresh weight/plant in addition, applied sulphur at rate (200 kg CaSO4 30% sulphur) take the same trend of lating planting date for the same characters. 2-Significant increase was obtained in quality characters as (TSS, Sucrose and Purity %) in both seasons resulted from planting at mid October and addition 200 kg calcium poly sulphur. 3- The highest values of all characters under study resulted from addition 200 kg sulphur for lat planting date in both seasons. 4- Significant decrease in values of impurities (K, Na and a-amino N.) were found resulted from lat planting up mid October and fertilization with 200 kg sulphur in both season.