الفهرس 
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Abstract
Two field experiments were conducted at the Experimental Farm of Sakha Agricultural Research station, ARC, Egypt during 205/2006 and 206/2007 growing seasons to study the effect of nitrogen, calcium and boron fertilization on growth, productivity and quality of sugar beet under different planting pattern.
1- Beets of 80cm – 2 side pattern accumulated the greatest dry matter. Increasing nitrogen rate increased accumulated dry matter / pant. Also, application of B and Ca significantly increased dry matter accumulated / plant.
2- Beets of 50cm – 1 side pattern produced the highest top, root and sugar yields per plant and Fadden. Increasing nitrogen level from 90 to 120 kg N / fad. Significantly increased top, root and sugar yields. Application of B and Ca fertilizer had a significant effect on these characters.
3- Planting pattern revealed on significant differences in TSS, Soluble non sugar, extractable white sugar % and looses sugar %, while beets of 50cm – 1 side pattern produced the greatest gross content. Application of N – fertilizer to sugar beet tended to decreased TSS content, but it increased soluble non sugar. Application of B and Ca significantly influenced TSS %. N, B and Ca fertilizer had no significant effect on extractable white sugar % and looses sugar %.
Generally, from the obtained data it can be concluded that plant population of 51.600 ants per Fadden distributed on one side of ridges 50cm apart with 120 g N / fad. And application ( 1.5 kg B + 100 kg ca / fad.) could be recommended for optimum root and extractable white sugar yield per unit area at Kafr EL – Shaik Governorate