QUALITY OF SOME SUGAR BEET VARIETIES UNDER DIFFERENT ENVIRONMENTAL CONDITIONS

Six field experiments were carried out in 2015 16 and 2016 17 seasons. A randomize complete block design with three replications was used at three locations :1. Giza Experiment Station (latitude 30.01 0 N and longitude 31.21 0 E); 2. Tamiya District, Fayoum Governorate (latitude 29.30 0 N and longitude 30.84 0 E) and 3. Ismailia Governorate (latitude 30.36 0 N and longitude 32.16 0 E)]. The performance of six sugar beet varieties (cvs.); Samba, Pleno, Gloria, Poly belga, Oscar poly and Gazella was studied to estimate sugar yield and its contributing traits as well juice quality traits under the three environmental conditions. The obtained results showed that growing seasons had a significant effect on impurities (K, Na and α-amino N), some technological characteristics (purity, extractable sugar, sucrose and sugar lost to molasses percentages) as well sugar yields/fed. The effect of varieties and locations factors significantly affected sugar percentage, extractable and sugar yield. The obtained results indicated that sowing Samba variety in the three locations had the highest sugar extraction and sugar percentages as well as sugar yield/fed. In general, results revealed that Samba variety followed by Gazella is favorable for the regions of Giza, Fayoum and Ismailia Governorates.

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