EFFECT OF NITROGEN; POTASSIUM FERTILIZER AND PLANT DISTRIBUTION PATTERNS ON YIELD AND QUALITY OF SUGAR BEET (Beta vulgaris l.) | ||||
| Journal of Plant Production | ||||
| Article 7, Volume 6, Issue 4, April 2015, Page 517-527 PDF (377.11 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2015.49572 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. M. Hamad; H. M. Sarhan; S. S. Zalat | ||||
| Sugar Crops Res. Inst., Agric. Res. Center, Giza, Egypt | ||||
| Abstract | ||||
| Two field experiments were planted during 2012/2013 and 2013/2014 growing seasons in the experimental farm of Sugar Crops Research Institute at sakha kafrelsheikh governorate, Egypt. Split plot design was used in both seasons, main plots were contained nitrogen and potassium fertilizers levels (75, 90 kg N and 24, 48 kg K2O and combinations between them). Whereas, four plant distribution patterns were distributed in sub-plots (20 x 50 cm, 15 x 66 cm, 25 x 40 cm and 30 x 33 cm). Results obtained indicated that maximum root fresh weight, root and sugar yields were obtained when sugar beet was fertilized with high nitrogen and potassium levels (90 kg N and 48 kg K2O/fed) and gave (2.430, 2.520 kg/plant; 36.41, 37.13 ton/fed and 6.47, 6.63 ton/fed) in both seasons, respectively. Whereas, the highest sucrose and total soluble solids and purity percentages were obtained with the lowest nitrogen level (75 kg N/fed.) and with the highest K levels (48 kg/fed.). On the other direction, all these best results were obtained with plant distribution patterns (20 x 50 cm), the space between hills and between ridges. These were true in both seasons. The highest nitrogen and potassium levels surprised the other levels because nitrogen and potassium encourage vegetative growth and increased sucrose accumulation in cells, whereas, patterns (20 x 50 cm) gave good growth by good leaf area which resulted from giving a good chance to plant to take sufficient sunlight which produced maximum carbohydrates and accumulation sucrose in roots. | ||||
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