Effect of sowing dates and mineral sulphur fertilizer on yield and quality of sugar beet under newly reclaimed soils [electronic resource].

Includes references.

Two field trials were conducted out in 2009/2010 and 2010/2011 seasons at Kom Osheim, EI-Fayoum Govemorate to study the effect of three sowing dates (1" October; 15" October and 1" November) and soil application of sulphur fertilizer in the form of Calcium poly sulfide CaSO₄ (30% sulphur) at the levels of (zero. 125 and 250 kg CaSO₄/fed, mixed with soil) which were applied at 45 and 75 days age, on Kawemira variety. A split plot design with four replicates in both seasons was used. The main plots were assigned to sowing dates, whereas, soil application with CaSO₄ in the sub plots. The results indicated that: early sowing dates at 1st -October significantly increased root diameter, root fresh weighVplant, as well as, root and sugar yields/fed, while, mineral contents SO₄% and N% were significantly decreased as compared with the other two sowing dates 15th October and 1'11st November. While, sown sugar beet at 15th October gave the highest sugar lc. in both seasons, respectively. Soil application with sulphur (CaSO₄) level up to 250 kg CaSO₄/fed significantly increased root diameter, root fresh weight/plant, sucrose% and yieldslfed (root and sugar), while, minerals content of SO₄% and N% were increased as compared with control and sulphur (CaSO₄) level with 125 kg CaSO₄/fed in both seasons, respectively. The interaction between early sowing date at 1" October and soil application with 250 kg CaSO₄/fed significantly increased sucrose%, root and sugar yieldslfed in both seasons.

Summary in Arabic.

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