Effect of boron concentrations and application time on the productivity and quality of some sugar beet cultivars | ||||
| Egyptian Sugar Journal | ||||
| Volume 11, Issue 0, 2018, Page 1-24 | ||||
| Document Type: Original Research Articles. | ||||
| DOI: 10.21608/esugj.2018.223948 | ||||
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| Authors | ||||
| El-Mahdy A. Teama1; ElSaady A. Ali1; Fathy M. Fathy1; Rasha A. Mustafa2 | ||||
| 1Agronomy Department, Agriculture Faculty, Assiut University, Egypt. | ||||
| 2Faculty of Sugar and Integrated Industries Technology, Assiut University, Egypt. | ||||
| Abstract | ||||
| Tow field experiment was carried out during 2015/ 2016 and 2016/ 2017, seasons at the Agronomy Department Experimental Farm, Agriculture Faculty, Assiut University to study the effect of foliar spray by boron concentrations at different application times on the productivity and quality of some sugar beet cultivars. Experiment was laid out in randomized complete block design (RCBD) using split plot arrangement with three replications. Boron concentrations (0, 40, 80 and 120 ppm) were arranged horizontally, while times of application (45, 60 and 75 days after planting) were arranged vertically. The multi-germ sugar beet cultivars, i.e., Kawemira, Gloria and Farida were allocated in subplots. The results showed that boron concentrations had a highly significant effect on root length, root diameter, root fresh weight, root yield (ton fed.-1), pol %, sugar recovery %, sugar loss %, recoverable and loss sugar yields (ton fed.-1) traits in both seasons except the effect on pol % in the first season which was insignificant. Sprayed sugar beet plants with high boron concentration (120 ppm) produced the highest mean values of previous traits in both seasons except the quality traits (Pol, sugar recovery and sugar loss %) in the first season which were reacted significantly to 40 ppm boron concentration. Furthermore, the effect of application time on the studied traits was insignificant except root length in the first season, sugar recovery % in both seasons and root fresh weight in the second season which were significant. Moreover, sugar beet cultivars exhibited highly significant effect on all studied traits in both seasons. Gloria sugar beet cultivar surpassed the other two cultivars with regard to yield and its attribute traits. On the contrary, Kawemira and Farida cultivars produced the highest mean values of quality traits as compared to Gloria cultivar. Also, the most first order interactions involved in this respect showed a insignificant influence on previous traits. Otherwise, the second order interaction had a significant or highly significant effect on most studied traits in both seasons. The highest mean values of recoverable sugar yield fed.-1(5.93 and 5.83 tons fed.-1 in the two respective seasons) were obtained from 120 ppm boron concentration sprayed at 60 days after planting to Kawemira cultivar plants in the first seasons and Farida cultivar in the second season. | ||||
| Keywords | ||||
| Sugar beet; Boron foliar application; Root and sugar yields; sugar quality; cultivars | ||||
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