Loubna Nasr Haidar*(1)
(1).Department of Field Crops, Faculty of Agriculture, University of Aleppo, Aleppo, Syria.
(*Corrsponding author: Dr. Lounna Nasr Haidar. E-Mail: lubnanaser82@gmail.com).
Received: 12/07/2019 Accepted: 07/03/2020

Abstract

The present research was carried out at the Agricultural Scientific Research Center in Al Gab, Hama Governorate, Syria, to study the effect of the tapping method of roots (two methods, Convex and Horizontal) using 4 different levels of cutting (cutting at the green leaf stalk of crown, cutting at1cm below the green leaf stalk of crown cutting at 2cm below the green leaf stalk of crown, and cutting at 3 cm below the green leaf stalk of crown) on the production of sugar beet. The experiment was laid, according to split-split block design with three replications. Paradi variety was used in winter date during the seasons 2008 and 2009. The results of this research showed that: the convex tapping method gave a significant increase in root yield of sugar beet (70.2 t/ha) and , sucrose (15.42%), purity (80.39%), theoretical sugar (9.69 t/ha), extractable sugar (7.77 t/ha) and root weight (810 g). Also, the results showed that: the treatment of cutting at the green leaf stalk of the grown gave a significant increase in root yield (73.01 t/ha), sucrose(14.23%), polarity (15.62%), Brix (19.43%), purity % (80.42%), theoretical sugar (8.45 t/ha), extractable sugar (8.45 t/ha) and root weight (820 g).
Keyword: sugar beet, levels of cutting, Tapping method.
Full paper in Arabic: PDF