Response of sugar beet to planting dates and water requirements in middle egypt 2-yield and yield components [electronic resource].

Includes references.

TWO FIELD experiments were carried out for two growing seasons of sugar beet 1995 / 1996 and 1996/1997 at Sids Agric. Res. Station Farm Beni-Suef Governorate, Egypt to study the relationship between planting dates (25 Sept., 10 Oct. and 25 OCL) and irrigation treatments (irrigation at 40 , 60 and 80% depletion from available soil moisture added to recommend irrigation). Significant increases in root length. root diameter, fresh rOOl weight. leaves number I plant, fresh weight / plant were obtained by early plantIng dale al all ages in both seasons. At harvest the highest 'ialue~ of ront length, root diameter and yield of roots, tops and sugar I fed were obtained by early planting (25 Sep.), while. the heaviesl roots were obtained from middle planting date (10 OcL). On the oth;:r hand. !<llc planting gave the highest number of plants / fed. Total soluble ~oj;ds (T.S.S.), sucrose percentage and purity were significanlly increased by carly planting date in both seasons. Irrigation at 40 % depletion from available soil moisture resulted in the highest values of all growth characters except root length, yield and yield components and all quality characters under study. Early planting date with irrgatioion at 40% depletion from available soil moisture gave the highest valucs of all characters under study.

Summary in Arabic.

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