Effect of sowing dates and thinning time on yield and quality of some monogerm and multigerm sugar beet varieties [electronic resource].

Includes references.

Two field experiments were conducted at Bani Sweeif governorate during 200212003 and 200312004 . The objective was to assess yield and quality relationships of six sugar beet varieties (3 monogerm and 3 multigerm varieties) in response to sowing dates and thinning time. Treatments consisted of three sowing dates (Sept. 10, Oct. 12 and Nov. II) and three thinning time i.e., at 4,6 and 8 true leaf stage The main results of this study revealed that sugar beet sown on September 10 gave significantly higher root performance in terms of length, diameter and weight, as welI as root and sugar yields/fed. and root quality (Sucrose, Purity and recoverable sugar percentages), while, on the other hand delaying sowing date up to November II increased impurities such as Na, K and amino-No Early thinning at 4- leaf stage improved root characters, in terms of, length, diameter and weight and possessed superiority in roots and sugar production per fed. and improved beet quality in terms of sucrose and purity %.

Summary in Arabic.

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