The Effect of Bolters Cutting in the Improvement of Morphological and Quality Traits of Sugar Beet (Beta vulgaris L.)

Faddi Abbas(1) Mahmoud Sido(1) and Entessar Al-Jbawi*(2) and Mohammad Ali Ali(2)

 (1). Agricultural Research in Homs, General Commission for Scientific Agricultural Research (GCSAR), Homs, Syria.
(2). Crops Research Administration, GCSR, Damascus, Syria.
(*Corresponding author: Dr. Entessar Al Jbawi,  E-Mail:dr.entessara@gmail.com).

Received: 11/06/2016                           Accepted: 12/08/2016

Abstract:

Sugar beet bolting is considered one of the main obstacles of sugar beet growing in the middle area of Syria, because of low temperatures during autumn sowing. This phenomenon caused big economic losses neither for the factories and the farmers, because of high reduction in sugar content. Regarding the importance of the issue an experiment was conducted in Homs Agricultural Research Center during 2013/2014 season, to study the effect of cutting bolters to limit its negative effect on the morphological and quality traits of four sugar beet varieties, tow are monogerm varieties i.e. Inverstar and Parade, while the other are multigerm varieties i.e. DS9008 and Byblos. Split plot design was used, where the dated of cutting bolters allocated in the maim plots, while the varieties were randomly distributed in the sub plot, with three replicates. The results exhibited a high bolting percentage (P<0.05) in the variety DS9008 (67%), which is considered the most sensitive varieties to bolting, while bolting was 0% for the variety Parade, which can be defined as the most resistant variety to bolting. The percentage of early bolting, which is classified as the most dangerous type of bolting, achieved the highest value (45%) in the variety DS9008, then Parade (30.2%), followed by Inverstar (2.4%), and finally Byblos (0%). Early bolters cut led to an increase in root weight in an average of 10.7%, while the increment in root weight was 1% for the medium bolters cut. In terms of brix%, early bolters cut led to an increase in brix in an average of 16.9%, while the increment in brix was 5.5% for the medium bolters cut.

Keywords: Sugar beet varieties, Bolting percentage, Bloters cut.

Full paper in Arabic: The Effect of Bolters Cutting in the Improvement of Morphological and Quality Traits of Sugar Beet (Beta vulgaris L.)

Effect of Storage Period of Sugar Beet (Beta vulgaris L.) in Piles on Technological and Manufacturer Traits of Roots

Entessar Al-Jbawi *(1) Ahmad Al Abdella(2)

(1). Sugar Beet Department, Crops Research Administration, General Commission for scientific Agricultural Research (GCSAR), Damascus, Syria.
(2). Agricultural Research Center in Der Al Zur, GCSAR, Der Alzur, Syria.

(*Corresponding author: Dr. Entessar Al Jbawi. E-Mail: dr.entessara@gmail.com).

Received: 07/08/ 2015                                     Accepted: 22/08/ 2015

Abstract

The study was conducted during 2008/2009 and 2009/2010 seasons on autumn (15th of November), and summer sowing dates (1st of August) at Al Mureiia Research Station, Agricultural Research Center of Der Al Zur, General Commission for Scientific Agricultural Research (GCSAR), Syria, to study the effect of some agricultural treatments (varieties: one monogerm, and the other multigerm), and environmental conditions (the period after harvest during 1-10 days), and sowing dates (autumn and summer), on the technological and manufacture traits assigned in randomized completely block design (RCBD) with three replicates. The results showed that prolonging storage period of the harvested beet roots leads to high and gradually increment in the total soluble solids (brix %), from the first day to the last day of the studied storage period, and the percent of increment for all varieties in brix% at the end of storage period as compared with the first day were 36.08, 24.69% for autumn and summer sowing. In terms of sugar percentage, the percent of decrement in sucrose % at the end of storage period as compared with the first day was 21.76 and 12.48 % for autumn and winter sowing for all varieties, respectively. Also purity % decreased in a rate of 4.57% for autumn and 8.82% for summer sowing. In spite of high purity% at harvest for autumn sowing compared to summer sowing, but at the end of storage period the purity% on summer was higher (71.17%) when compared to autumn (68.26%). Water content decreased in a high percentage after 10 days of harvest, the decrease percentage was 14.58% in autumn and 7.16 in summer for all genotypes. Root weight also decreased in a rate of 26.48% in autumn and 26.48% for summer after 10 days of harvest. The conclusion is that the monogerm varieties are more resistant for deterioration compared to multigerm varieties. Also according to results of the study, it is obvious that sowing beet on summer is better than autumn sowing at harvest and pre harvest, to get the best quality characteristics, and good water content and root weight.

Key words: Sugar beet varieties, Storage period, Piles in fields, Autumn sowing, Summer sowing.

Full paper in Arabic:

تأثير فترة تخزين الشوندر السكري (.Beta vulgaris L) على شكل أكوام مكشوفة في الخصائص التكنولوجية والتصنيعية للجذور

Effect of Planting Method in Some Productivity and Quality Traits of Tow Sugar Beet Varieties Grown in Summer Season in Syria

Entessar Al-Jbawi*(1) Thamer Al Huniesh(1) Zuhair Al Jasem(2)Nahla Al Mahmoud(2)Ziad Al Ibrahim(2)  and Ahmad Al Abdallah(2)

(1). Crops Research Administration, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(2). Der Al Zur Agricultural Research Center, (GCSAR), Der Al Zur,  Syria

(*Corresponding author: Dr. Entessar Al Jbawi, Damascus, Syria. E-mail: dr.entessara@gmail.com , Mobile: 0988699884)

Received: 01/02/ 2015                                    Accepted: 18/03/ 2015

Abstract

The field experiment was carried out at the Scientific Agricultural Research Center, Der Al Zur, Syria, during the growing seasons 2009/2010 and 2010/2011, to determine the effect of planting method on some productivity and quality traits of two sugar beet varieties, one was monogerm i.e. Dita, while the other was multigerm i.e. Reda. The experiment was sown in three methods i.e. ridges (50 cm), ridges (100 cm), and rows, each planting method with plant distance (20 cm between plants). The experiment was laid out in a split plot design, with four replications. The combined analysis exhibited significant effect of the planting method (M) and non significant effect of the varieties (V) for most of the studied traits. The results showed that planting in ridges were more important compared with sown in rows  however, planting  in ridges with width 100 cm caused  an increase in root and sugar yields, and sucrose% (65.9 ton/ha, 10.1 ton/ha and 17.5 %, respectively). ).  We can consider planting in ridges the best planting method in summer season in Der Al Zur governorate in Syria.

Keywords: Planting method, Productivity and quality traits, Sugar beet varieties.

Full paper in Arabic : تأثير طريقة الزراعة في بعض الصفات الإنتاجية والتكنولوجية لصنفين من الشوندر السكري في العروة الصيفية في سورية