The field experiment was carried out during the two summer successive seasons of 2008 and 2009 at the Experimental Station of Desert Research Center, at Ras Sudr, South Sinai Government, on White Balady eggplant to compare between the effect of saline irrigation water at levels of 3500 and 4500 ppm, with the effect of some compound applications (Algreen and Mega pour were applied as foliar spray in concentration of 2.5 cm 3 /h. and 0.75 cm 3 /L. respectively) also, they were added as soil addition at rate of 1.5L. and 0.8L./Fed. respectively, after 3, 6 and 9 weeks from transplanting, while the Unisal was applied as soil addition before transplanting at rate of 4 L./Fed., as well as, control treatment compound. The obtained results indicated that level saline irrigation water at 3500 ppm level showed increment in growth characters when compared to 4500 ppm saline irrigation water level. The same trend was observed with yield and its components (total yield, number and weight of fruits/plant, average fruit weight, diameter and length). Also, N, P, K and chlorophyll values showed the same line of previous characters, while, Fe (in fruits), Na and Cl (in leaves) contents were increased with saline irrigation water at 4500 than 3500 ppm level. The application of the tested compounds enhanced plant growth, yield and its components, N, P, K and chlorophyll values in plant leaves than control treatment. On the other hand Na, Cl and Fe content were increased in plant leaves and Fe value in fruits were the highest in control treatment than compound treatments. The best growth characters, heaviest yield and the best characters of yield components, as well as the highest values of N, P, K and chlorophyll content and the lowest values of Fe (in fruits), Na and Cl content (in plant leaves) were recorded with saline irrigation water at level 3500 ppm and Algreen compound followed by Mega pour both applied as foliar spray.

The field experiment was carried out in the Experimental Farm of the Desert Research Center at Ras Sudr Region, South Sinai Governorate, during the two successive summer seasons of 2008 and 2009 to study the effect of the combinations among three levels of N, P, K (100%, 80% and 60% of recommended dose) with nitric or phosphoric acids individually or mixture of them to minimizing the harmful effects of salinity on growth, yield and fruit quality of sweet pepper plants. The results suggested that the effect of the highest level of N, P, K (100%) combined with mixture of nitric and phosphoric acids gave the most vigorous plants expressed as plant length, fresh and dry weight of plant and dry matter content of plant, in both seasons. Moreover, it produced the highest fruit yield and gave, the best physical properties of fruits, i.e., fruit length, weigh and number of fruits/plant, as well as the best values of total chlorophyll, vitamin C, N, P, K of leaves tissues. On the other hand, it decreased Na and Cl concentrations.

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Two field experiments were carried out at Ras Suder Experimental Station in South Sinai Governorate during 2006Governorate during /2007Governorate during and 2007Governorate during /2008 seasons to study the effect of natural fertilizers of phosphorus and potassium and the combination between them (rock phosphate 22% P 2 O 5 and feldspar 10% K 2 O) at the rates of 0, 30, 45 P 2 O 5 units/ fed. and 0, 48, 96 K 2 O units/ fed., respectively. Also, NPK mineral fertilizers were used by the recommended dose as 60 N, 30 P 2 O 5 and 48 K 2 O units/fed. on growth yield and its components as well as chemical compositions of onion. Drip irrigation system and saline water (about 3700 ppm) was used, the soil was saline and highly calcareous (49.5% CaCO 3 ).The obtained results revealed that growth characters i.e., plant length, number of leaves/ plant, plant fresh weight of leaves and bulb, also, dry matter of bulb and bulb diameter gave significantly the highest values compared with the control treatment (mineral fertilizers) or natural combination fertilizers treatment ( 48 P 2 O 5 rock phosphate plus 96 K 2 O feldspar units/ fed.). Also, the total yield, fresh weight of the bulb and bulb diameter were significantly the highest with the same natural treatment compared to other treatments. TSS, N, K and SO 4 showed the highest content in onion bulbs with the preveous natural treatment or the control treatment, while the lowest and best figures of Na and Cl content were found with natural fertilizers at rates of 45 P 2 O 5 plus 48 K 2 O units/ fed.