This study was carried out during the two successive seasons of 2012 and 2013 on Manfaloty and Wonderful pomegranate trees at5 and 3-years old respectively, the trees were spaced at 4x4 m. grown in a sandy soil. The highest values of yield and its components i.e., fruit weight, fruit number /tree and yield /tree were recorded when Manfaloty and Wonderful pomegranate trees treated with GA3 at 50 or 100ppm, CaCl2 4 %, kaolin 2.5 or 5 % and bagging treatment. The lowest percentage of fruit creaking and sunburn were obtained with bagging treatment followed by kaolin 5% and spraying by CaCl2 and GA3 treatments compared with the control treatment .All treatments caused a highly significant increase in Marketable fruits %. Bagging treatment gave the highest Marketable fruits percentage compared with the control and other treatments. The highest fruit length and diameter obtained by GA3 50 or 100ppm and CaCl2 2 or 4% treatment. Furthermore,GA3, kaolin and bagging treatments improved SSC, total acidity and SSC/acid ratio ,meanwhile the highest anthocyanin content in juice and peel was obtained by bagging and spraying kaolin 5% treatments in both cultivars. Therefore, these treatments could be recommended for improving Manfaloty and Wonderfull pomegranate cvs performance under similar conditions of this study.

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The present study was carried out during three successive seasons (2011, 2012 and 2013). (the first year was considered as a preliminary trial) on ten years old Flame seedless grape vines cultivated in a private vineyard at 64 th kilometer Cairo-Alexandria desert road. The main of study was to evaluate the effect of using organic fertilizer as compost in combination with or without two natural rocks ; Rock Phosphate and Feldspar. Also three different biofertilizers were used; Biogen (Azotobacter chroococcum) for N, Phosphorien (Bacillus Megathrium) for P and Potasiumag (Bacillus circulans) for K in comparison with the mineral fertilization , yield and its components as ( number of clusters per vine and cluster weight), physical and chemical characteristics of berries, and nitrite and nitrate content in berry juice of Flame seedless grapevine.The results revealed that using combined application of%100 compost, natural rocks and the three biofertilizers of NPK were very effective in increasing yield per vine and per feddan, cluster number per vine and weight, physical and chemical properties of berries were significantly improved. On the other side, Both nitrate and nitrite content in berry juice of Flame seedless grapevines were minimized comparing with the vines received 100% mineral fertilization or 100% compost alone. Furthermore, organic agriculture is very safe for human and environment by reducing pollution via improving soil nutritional status as well as decreasing mineral fertilization and that will be reflected on yield and quality of the grapes.

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This study was carried out during three seasons of 2008, 2009 and 2010 on Balady mandarin trees (Citrus reticulata, Blanco). This work was to evaluated the effect of some antioxidants namely ascorbic acid, salicylic acid and chelated zinc on yield and fruit quality of Balady mandarin fruits. The results reveled that sprayed mandarin trees with the three antioxidants increased the yield/tree than the control. Furthermore, lower concentration (500 ppm) of ascorbic acid, salicylic acid and chelated zinc gave a higher effect in this respect comparing with high concentration. The increment in yield /tree may be due to the increment in number of fruit/tree. Yet, these treatments resulted in somewhat effect on average fruit weight, SSC/acid ratio and vitamin C content in fruit juice. Furthermore, sprayed mandarin trees with ascorbic acid at 500 ppm produced higher content of soluble solid and vitamin C than the other treatments. The data indicated that spray 500 ppm of ascorbic acid, salicylic acid and chelated zinc at after fruit set and the one month later were beneficial to obtain economic yield with quality of Balady mandarin fruits.