Improving Yield and Quality of Sugar Beet Using Boron at Different Levels of Nitrogen Fertilizer

Document Type : Original Article

Authors

Sugar Crops Res. Inst., Agric. Res. Centre, Giza, Egypt.

Abstract

Low quality of sugar beet roots is one of the problems which face expanding in agriculture of sugar beet in Middle Egypt; especially El-Minia Governorate .This trial was conducted at Mallawi Agric.Res. Station ,El-Minia, Egypt, during 2008/2009 and 2009/2010 seasons to determine the optimal level of boron and nitrogen fertilizer to obtain the highest yield and quality of sugar beet . Split plot design with four replications was used. Nitrogen fertilizer levels i.e. 80, 100 and 120 kg/fed were arranged in the main plots. Boron, as boric acid, was foliar sprayed at 0.00, 0.05 and 0.10 % and allocated in the sub plots. Foliar applications of boron were applied at 80 days after planting. The obtained results revealed that boron and nitrogen fertilizer levels had a significant effect on vegetative traits, i.e. root length and diameter (cm), quality characteristics (pol%, Na, K, a- N contents, sugar recovery % and quality index) and productivity parameters of sugar beet (root and sugar yields ton/fed) in the two growing seasons and the combined. Applying fertilization of sugar beet by 100 kg N /fed with foliar application of boron with 0.10 %( as boric acid) is recommended under Middle Egypt conditions (El-Minia Governorate conditions) because it gave the hightest value of recoverable sugar yield (4.39 ton/ fed) of sugar beet compared with the other.

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