This investigation was carried out at the Experimentals farm of Sakha Agricultural Research Station, Kafr El-Sheikh Governorat during 2004/2005 and 2005/2006. This study was conducted to find out the effect of five plant population in terms of five planting patterns i.e. Three ridges 90 cm in width and hill spacing (15, 18 and 22.5 cm apart on the two sides of ridge) thus presents (56.000, 46.666 and 37. 333 plants/fad. respectively), row 50 cm in width and hill spacing of 20 cm apart. (42000 plant/fad.) and ridges 50 cm in width and hill spacing of 20 cm apart (42000 plant/fad.) as well as three nitrogen rates i.e. (80, 100 and 120 kg N/fad.) on yield and quality of sugar beet.Growing sugar beet plants in ridges of 50 cm and hill space of 20 cmcaused a significant increase in root diameter, root/top ratio, sucrose percentage as well as root, top and sugar yields/fad. in both seasons. On the other hand, there was no significant effect on root length, total soluble solids and juice purity percentages; parameters.Application of 120 kg N/fad. significantly increased root diameter, dry matter/plant, root/top ratio, sucrose percentage as well as root; top and sugar yields/fad. in the first season only. No significant effects were found on root length, total soluble solids (T.S.S.) and juice purity percentage in both seasons due to nitrogen fertilizer.It could be concluded that planting sugar beet on ridges 50 cm in with and hill spacing of 20 cm apart and application of nitrogen fertilizer at the rate of 120 kg N/fad. could be recommended for optimum root and sugar yields per unit area under the condition of this study.

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Two field experiments were carried out at Sakha Research Station, Kafr El-Sheikh Governorate during two growing seasons of 2010/2011 and 2011/2012 to study the effect of the combinations between foliar application of three Fe levels (0, 1 , and 2g/L as Fe-EDTA), three Mn levels (0, 0.5 and 1 g/L as Mn-EDTA) and two sulpher levels (0 and 8 cm S/L as calcium poly sulphide 30 %) on yield and quality of sugar beet. The obtained results proved that:  The increase of Fe level up to 2 g / L, Mn up to 1g/L and 8 cm S/L individually as foliar application significantly increased root length and diameter as well as sucrose%, extractable sugar %, purity % , yields of top, root and sugar (ton / fed), whereas Juice impurities content (K, Na and -amino N) and sugar losses to molasses were decreased in both seasons.  Foliar spray beet plants at the rate of 2g Fe/L+1g Mn / L+8 cm S/L achieved the highest root yield (29.32 and 33.82) in the 1 st and 2 nd seasons, respectively. Therefore, it could be recommended that, spraying beet plants by 2g Fe / L +1g Mn / L + 8 cm S/L as foliar application to maximize root yield.

Growth , yield , yield components and root chemical contents of these varieties were monitored after 90 and 120 days from sowing and at harvest time as well . Varieties studied showed significant differences in their productivity in the experimental site , whereas , Farida var. was superior in root fresh weight . Moreover , growth of these varieties varied at vegetative sampling periods , these variation were remarkably during the first 90 days from sowing , later growth characters values did not show significant differences at 120 days from sowing . Farida var. showed superiorty in growth parameters and accordingly gave the highest root and sugar yield . On the other hand , Farida variety did not form the hugest above ground vegetative mass since Athospoly variety was superior in top fresh weight / plant (0.94 kg / plant) and accordingly reached the maximum in top yield (25.8 ton / fed.) with no significant differences with Farida var. (26.3 ton / fed.) . However , values of top yield (ton / fed.) between Farida and Athospoly did not differ significantly . Root fresh weights were varied significantly among the seven studied varieties , whereas , a percentage of 0 , -2.94 , -18.63 , -17.65 , +19.61 , + 5.88 and +14.71 % deviation from the average fresh root weight / plant which was 1.02 kg were calculated for Lola , Kawemira , Top , Raspoly , Farida , Pamela and Athospoly respectively . Varieties studied could be classified according to its root and sugar yield in the experimental site to ; I-High productivity varieties which are , in descending order , Farida , Athospoly and Pamela , II-Intermediate productivity varieties which is Lola and III-Low productivity varieties which are , in descending order , Kawemira , Raspoly and Top