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Asian Journal of Crop Science

Year: 2013 | Volume: 5 | Issue: 3 | Page No.: 295-303
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Authors

Eman I. El-Sarag

Sameh H. Moselhy

Keywords

Research Article

Response of Sugar Beet Quantity and Quality to Nitrogen and Potasium Fertilization under Sandy Soils Conditions

Eman I. El-Sarag and Sameh H. Moselhy
Sugar beet is a tolerant crop to salinity and wide range of climate, so, it could be economically grown in light textural soils (sandy) such as at the Northern parts of Egypt. Delivering higher quality of sugar beet roots to the factory is determined by the concentration of sucrose and impurities in the root, which, is mainly related to Nitrogen (N) and Potassium (K) fertilizers program. So, the effect of four N levels (105, 141, 176, 211 N kg ha-1) and four K levels (60, 100, 140 and 180 K2O kg ha-1) on multi germ sugar beet cultivar (Ymer) under sandy soil conditions was studied in North Sinai Governorate, Egypt (31°N and 32°E) during two winter seasons (2009/2010; 2010/2011). Results showed that the highest sugar beet yields of top (15.478 and 17.695 t ha-1), root (41.184 and 49.488 t ha-1) and gross sugar (7.622 and 8.936 t ha-1) were obtained by adding the highest fertilizers rates (211 N kg and 140 K2O kg per hectare). The maximum sucrose percent (18.64 and 18. 87%) was achieved by adding 100 K2O kg and 141 N kg ha-1. Gross sugar yield per hactare was positively correlated with yields of sugar beet top (0.974) and roots (0.823) ha-1 but negatively correlated with quality index (-0.987). Path analysis indicated that, root yield ha-1, sucrose% and the interaction between root yield and top yield were the most variable contribution of gross sugar yield.
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