ABSTRACT
Two field experiments were conducted throughout two seasons in 20/2021 and 21/2022 in Sannource village Elfayoum Governorate to study the effect of three hill spaces i. e. 13,15 and 18 cm and four nitrogen fertilization i.e. 60, 80, 100, and 120 kg. N/ fed. and their interaction on yield and quality of sugar beet crop.  Sugar beet variety viz Bts mono germ variety was sown in the 1st week of September in the two studied seasons. Significant response in root dimensions with the increase in hill distances, positive and significant response in root dimensions in both seasons due to the extra applications in nitrogen fertilization, yield root fresh weight fed.-1 showed statistical differences at P≤ 0.05 between hill spaces, in the respect to their effect on fresh weight of sugar beet yield fed.-1. an irreversible relationship between hill spaces and root yield/fed. was found with the increase in hill spaces, positive increase in root yield of sugar beet with the increase in the farther doses of nitrogen. Neither hill spaces nor nitrogen fertilizer levels and their interaction influenced sugar beet juice purity percentages in the two seasons. neither hill spaces nor nitrogen fertilizer levels appeared a significant influence on K % and Na %.