The majority of the adults demonstrated significant lack of knowledge and poor practices towards vitamin D and its deficiency. Therefore, attempts to increase the awareness about this issue are required through establishing educational campaigns targeting the general public in Sharjah, UAE.

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SUMMARYSoil samples from Guneid Sugarcane Scheme, representing high- and poor-yielding sites, were collected and analysed. Yields of sugarcane were significantly and positively correlated with exchangeable potassium and clay content (P = 0·01), whereas there was a negative correlation between yield and exchangeable sodium percentage (P = 0·05). Multiple regression on soil clay content, exchangeable potassium and ESP accounted for 48·1% of the observed variability of yield of sugarcane, indicating that the clay content was the most important soil factor determining yield of sugarcane in this area.

SUMMARYTwo field experiments on the effects of watering at 40–50 (M1), 60–70 (M2), 80–90 (M3) and 90–100% (M4) of available soil-moisture depletion on sugarcane were conducted at Guneid during 1974–77. Intensive cane growth was observed from April to August. Irrigation treatments significantly affected yields of cane and sugar, and the percentage of sucrose, with treatment M2 giving the most economic yields of cane and sugar.

Three field experiments were conducted at Guneid, Sudan, in which N was applied to sugarcane (A) in one dose, (B) in split doses at 2 and 4 months, and (C) as a single dose 4 months from planting. Nitrogen application generally increased the yields of both cane and sugar but did not significantly affect sucrose recovery. Correlation coefficients for yields of cane and sugar suggested that the application of 88-176 kg N/ha 2 months after planting was economic.