Eefect of Hill Spacing and Cease Irrigation Before Harvesting on Som Sugar Beet Varities Under Sandy Soils.

Abstract

Two field trials were conducted during 2009/2010 and 2010/2011 seasons, in Tamia District, El-Fayoum Governorate, Egypt, to study the effect of two cease irrigation before harvest periods (10 and 20 days) and three spaces between hills (15, 20 and 25 cm) on performance of three varieties (Pleno, Samba and Lola). Cease irrigation 10 days before harvest significantly increased root and top fresh weight, while cease irrigation 20 days before harvest significantly increased sugar yield/fed, percentages of sucrose, TSS and purity. Root and sugar yield /fed, and sucrose% were significantly increased with reducing spacing hills. Spacing of 15 to 20 cm between hills had the best quality traits. Samba variety had the highest values of root and sugar yields /fed as will as sucrose and purity percentages. Ceasing irrigation and varieties interaction had a significant effect on quality traits, as well as root and sugar yields/fed. Under this study sugar beet can be cultivated on 20 cmhill spacing with cease irrigation at 20 days before harvesting to maximize sucrose% as well as yields of root and sugar yields/fed.

Response of Three Sugar Beet Varieties to Planting Density and Potassium Fertilizer Levels Under Sandy Soil Conditions

“…Such results might be attributed to reducing inter-competition between plants rather than reducing intra-competition in dense planting with 20 cm between hills. The obtained results are in agreement with those reported by Shalaby et al (2011), Aly et al (2012), Sarhan et al (2012), El-Hity et al (2014 as well as Neana and Abd El Hak (2014).…”

“…At contrary, the three sugar beet varieties did not vary significantly in sucrose (%), alpha amino N (%), purity (%), extractable sugar (%) and SLM (%), in spite of recording higher purity (%) and extractable sugar (%) and lower SLM (%) by Pleno variety compared with the other two varieties. The obtained results are in agreement with those reported by Safina and Abdel Fatah (2011), Aly et al (2012) and Enan et al (2016). Also, Al-Sayed and Attaya 2015reported that sugar beet varieties significantly differed in juice purity and sucrose percentages.…”

“…The superiority of Pleno variety in root yield/fad., over Rass Poly and Panther varieties amounted to 21.96% and 19.68%, respectively. These results are in line with those reported by Osman et al (2003), El-Bakary (2006), Azzazy et al (2007), El-Sheikh et al (2009, Shalaby et al (2011) and Aly et al (2012). Also, Al-Sayed and Attaya (2015) recorded significant differences among sugar beet varieties in root yield during both seasons.…”

“…gave maximum sugar yield. Furthermore, Aly et al (2012) showed that sugar yield/fad., was significantly increased with reducing spacing between hills. The obtained results are in harmony with those of Nafei et al (2010), Shalaby et al (2011), Sarhan et al (2012) as well as Neana and Abd El Hak (2014).…”

“…Increasing sugar beet productivity and quality could be achieved by selecting high yielding varieties. Many investigators scored significant differences among sugar beet varieties in most studied traits (Osman et al, 2003;El-Bakary, 2006;Azzazy et al, 2007;El-Sheikh et al, 2009;Safina and Abdel Fatah, 2011;Shalaby et al, 2011;Aly et al, 2012;Al-Sayed and Attaya, 2015;Enan et al, 2016).…”