RESPONSE OF SOME SUGAR BEET GENOTYPES TO NITROGEN FERTILIZATION LEVELS UNDER NEWLY RECLAIMED SOIL CONDITIONS

Document Type : Research articles.

Authors

Sugar Crops Research Institute, Agricultural Research Center Giza, Egypt.

Abstract

Two field experiments were conducted during 2009/2010 and
2010/2011 seasons in Koum Ousheem district, El-Fayoum Governorate.
The major goal was to study the response of five multigerm sugar beet
varieties namely; Oscar poly, Desprez poly N, Pleno, Nejma and H poly
to three nitrogen fertilizer levels, i.e., 100, 120 and 140 kg N/fed.
The obtained results revealed that Desprez poly N variety
significantly increased in growth traits, i.e., root diameter, root fresh
weight and sugar yield/fed, while Nejma variety significantly surpassed
in sucrose% and root yield/fed, and reduction in impurities% in both
seasons.
Application of 140 kg N/fed. maximized yield productivity,
represanted by improved average root weight, root and sugar yields/fed.
However, juice impurities were increased as nitrogen level was
increased from 100 to 140 kg/fed. On the contrary, a gradual reduction
in sucrose% has been detected with the increase in nitrogen level over
120 kg/fed.
The interaction between Desprez poly N variety and nitrogen
fertilization up to 140 kg N/fed. recorded the highest values in root and
sugar yields/fed. Under the conditions of this study productivity of sugar
beet varieties could be maximize by supply sufficient nitrogen
fertilization levels from 120 to 140 kg N/fed.

Keywords

Fayoum Journal of Agricultural Research and Development
Volume 26, Issue 1
January 2012
Pages 78-85

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