Effect of Nitrogen, Potassium and Maganese Fertilization on growth and yield of sugar beet [electronic resource].

Includes reference.

The goal of this work was to walk a wide step on that road arrives to the optimum demand of nitrogen,potassium and manganese for sugar beel. This work was done in Abis area for two seasons (2005-2006 and 2006-2007). Nitrogen fertilization showed asignificant effect on the growth of sugar beet plant where increased the yield of the whole plant, rool,shoot and sugar, also increased the percentage of soluble salts solids, sugar and amino N in tuber tissues, especially with the highest rate of N application (150 mg N/ kg soil) where increased the sugar yield as the main product 41.4 and 39.7% for the first and second seasons, respectively. The rate of 100 mg K/ kg soil was the best rate of potassium addition with most of studied parametersespecially the sugar production where increased it by 16.8 and 19.8% for the first and second seasons, respectively. The addition rate ofManganese (0.2 mg Mn/kg soil) was the best rate where, promoted the root weight and consequently the sugar yield where increased it by 31.5 and 33.4% for the first and second seasons respectively.

Summary in Arabic.

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