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In a field trail at Wadi Sudr Research Station (Desert Research Centre) South Sinai in season (2006)(2007), the effect of nitrogen, potassium and sulfur on wheat yield, nutrients content and uptake. Three levels of N: 60, 90 and 120 kg/fed, five levels of K: 0, 50 and 100 kg K2O/fed were added to soil in one dose totally with the first nitrogen dose and the same rates 50, 100 kg K2O/fed but were divided into two equal doses (25+25), (50+50) and were added to soil at the same time of adding Ndoi:10.21608/jssae.2011.55650 fatcat:pke3kucfzjeulpv2twq5ccsl6y