Canino apricot trees received four sprays of magnesium sulphate at 0.5%, 1.0% and 3.0%, boric acid at 0.2, 0.5 and 1.0%, ascorbic acid at 250, 500 and 1000 ppm, Vitamin B complex at 100, 200 and 400 ppm and a combination of the medium concentrations of each substrate were evaluated during 2004 and 2005 seasons. Single or combined application of magnesium, boron, ascorbic acid or vitamin B complex was favourable for improving leaf area, leaf mineral content (N, P, K and Mg), yield as well as physical and chemical properties of the fruits compared to untreated trees. The promotion effect was associated with increasing the applied concentrations. Using magnesium, born, ascorbic acid and vitamin B complex, in descending order was very effective in improving growth, nutritional status, fruit quantity and quality. Carrying out four sprays at starting growth, after blooming, after fruit setting and at three weeks later with a combination of 1.0% magnesium sulphate, 0.5% boric acid, 500ppm ascorbic acid and 200 p.p.m vitamin B complex suggested to be beneficial in improving growth, nutritional status, yield and fruit quality of “Canino” apricot.

two successive seasons of 2015 and 2016 on Wonderful“ Pomegranates trees grown in sandy soil under drip irrigation system in a private orchard located at Giza governorate, Egypt . Trees were sprayed two times (at fruits size 8-10 mm & Re- spraying at one month later) with  Potassium silicate at (2500 &  5000 ppm) , Boron at(5 &10%) , Kaolin (1 &2% ) , Zinc oxidase (1000 & 2000 ppm) with wrapping as a commercial treatments . Spraying started at July  in the two seasons to improve fruit cracking resistance “Wonderful“ pomegranates  and study their effects upon yield components, physical and chemical fruit properties. Results indicated that the “Wonderful“ pomegranates cultivar had the highest values of fruit weight and the minimum cracking values were obtained by spraying Boron at (5 %) and potassium silicate at (5000 ppm) in both seasons and this treatments gave the maximum values with total yield/tree, /feddan and Marketable yield/tree, /feddan .Meanwhile ,number of arils per fruit ,total soluble solids , total sugar ,total acidity , (arils)/fruit weight was not affected but when trees treated with wrapping, without wrapping and zinc oxidase at (1000 ppm) sprays gave the minimum mentioned above characteristics. However, fruit weight, arils weight, ascorbic acid, anthocyanin and tannins %were increased as influenced by foliar spraying with all treatments in both studied seasons. Therefore, boron at 5 % and Potassium silicate at 5000 ppm treatments could be recommended for improving Wonderfull pomegranate cvs performance in cracking resistance alternative treatments to fruit wrapping under similar conditions of this study.

This study was carried out during 2013 and 2014 seasons to examine the effect of soil addition of Calcium nitrate at 1.0 kg/tree, borax at 25 g/tree and /or spraying of chelated-Ca at 0.03% and chelated-B at 0.025% on growth, yield and fruit quality of Washington Navel orange trees. Varying sources and methods of application for both Calcium and boron had an announced effect on growth, leaf content of pigments and nutrients, yield and fruit quality .Using both calcium and boron via leaves was superiors than using both via soil and using chelated form of both nutrients was favorable than using calcium nitrate or borax for Ca and B, respectively. Using Ca and B via leaves in chelated forms at 0.03 and 0.025% respectively gave the best results comparing with using both together via soil. A pronounced effect on yield and fruit quality of Washington Navel orange trees was obtained with spraying chelated-Ca at 0.03% plus chelated-B at 0.025 % three times at growth start, just after fruit setting and three weeks later.