الفهرس 
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Abstract
The experiment was carried during 2008/2009 and 2009/2010 br seasons at the Experimental Farm of Desert Research Center, Ras Suder br region, South Sinai Governorate, on cabbage plants cv. El Balady br Improved. This work aimed to study the effect of sulphur (0, 150 and 300 br kg/fed.), magnetite (0,100 and 200 kg/fed.) and potassium humate (0, br mineral fertilizers only, 2 and 4 kg/fed.) on growth and yield of cabbage br plants as well as the chemical properties and available nutrients of the br soil. The obtained results indicated that application of 300 kg br sulphur/fed. to cabbage plants cv. El Balady Improved effectively br enhanced the vegetative growth, total yield and head characters as well as br nitrogen, phosphorus, potassium, calcium, sulphur and iron contents in br the leaves and heads, but reduced sodium, chloride and magnesium, in the leaves and heads, compared to other levels. Also, there were gradual br increments in EC, SO br and available N, P, K, Ca and Fe, meanwhile pH, Na, Cl and available of Mg in the soil were decreased with increasing the br sulphur levels. Results also indicated that increasing magnetite levels led to br increasing vegetative growth and chemical characteristics, i.e., nitrogen, br phosphorus, potassium, calcium, sulphur and iron in leaves and heads. br However, sodium, chloride and magnesium in leaves and heads were br decreased with increasing magnetite levels. Also, there were gradual br increments in EC, SO br and available N, P, K, Ca and Fe, meanwhile pH, br Na, Cl and available of Mg in the soil were decreased with increasing the br magnetite levels. br 4 The best values of plant growth, total yield, head characters and br chemical characteristics were recorded by mineral fertilizers only or 4 kg br potassium humate/fed. br The cabbage plants produced the highest yield by the addition of br 300 kg sulphur/fed., 200 kg magnetite/fed. combined with either mineral fertilizers only or 4 kg potassium humate/fed.