استجابة طرازين من الشوندر السكري Beta vulgaris L. لاختلاف موعد الحصاد في العروة الشتوية

الملخص EN

A field experiment was conducted at General Commission for Scientific Agricultural Research, (GCSAR), Al-Ghab Agricultural Research Center.

Syria, in winter time during 2008 and 2009 years, to determine the effect of harvest date on yield and quality traits of two sugar beet varieties, one of them was monogerm (Scorpion), and the other was multigerm (Sultan).

The two varieties were harvested at three harvest times (180, 210, 240 days after planting).

The experimental design was Split Plot with four replications.

Results showed that delaying harvest date of sugar beet roots till 240 days after planting caused a significant increase in brix percent and yield of roots by average 4.25 % and 6.65 % respectively, while harvesting after 210 days of planting gave a higher sucrose (16.20 %), purity percentage (79.92 %), and sugar yield (9.51 ton / h).

The results confirm the importance of harvest date of sugar beet roots to achieve the best yield and quality traits ; it was after 210 days of planting according to the results of the study.

Also we recommend Scorpion (monogerm) variety to be grown in winter time in Al-Ghab, because of its superiority in yield and quality traits when compared to Sultan (multigerm).