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¹ Doğu Anadolu Tarımsal Araştırma Enstitüsü Müdürlüğü, Erzurum DOI : 10.21566/tarbitderg.281846 - This research was carried out in four replications that harvested at different times in order to determine yield and yield components of root-body sugar beet, according to the Randomized Block Pattern, the ecological conditions in Erzurum in 2014. In the experiment, sugar beet`s root-body were harvested in 3 different dates (1st week of October, the 3rd week of October and first week of November). In the research was investigated such as parameters root yield (kg/ha), sugar rate (%), sugar yield (kg/ha), dry matter and usare purity. The sugar yield among the harvest date is significant (P< 0.05), and root yields was determined compared to the combined harvest date. Average highest root yield (8045.62 kg/ha), sugar yield (1323.50 kg/ha), and sugar ratio (18.8%) was gained from harvest in the first week of November. According to our research results, at sugar beet suitable harvest date is the first week of November in Erzurum conditions. Keywords : Sugar beet, Beta vulgaris saccharifera, root yield, sugar ratio