الفهرس 
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Abstract
Two field experiments were carried out at ElSerw Agricultural Research Station, North East Delta in 1996/97 and 1997/98 growing seasons. The main objectives of this investigation were to determine the requirements of nitrogen levels for some sugar beet varieties and the suitable plant position on ridges to produce the maximum root and sugar yields. Increasing nitrogen dose up to 70 kg N/fed applied to sugar beet plants was associated with a significant increase in root yield in both growing seasons. The results revealed that sucrose % was markedly influenced by the interaction between sugar beet varieties and plant position on ridges in both seasons. It can be concluded that, maximum sugar yield could be produced by sowing Betty variety hills on the upper third site of ridge 60 cm apart with the application of 70 kg N/fed.