Grapevine (Vitis vinifera L.) quality and growth are affected by the foliar fertilization. Algae extract, glutamic acid, and vitamin B are known as foliar fertilizer but there is little information available about the best combinations of these materials for grapevine. Here, 2-year field study in a randomized complete block design (RCBD) were conducted to study the influence of foliar applications of vitamin B, glutamic acid, and algae (Amphora ovalis) extract on Thompson Seedless grapevines (Vitis vinifera L.) growth and yield. The growth, yield, and quality of grapevine were affected significantly (P 0.05) by the different treatments. The foliar application of vitamin B, glutamic acid, and algae increased the pruning wood, total chlorophyll, leaf area, and fruit yield compared with the control. In addition, these treatments induced an increase in the concentrations of N, P, and K. The berries quality characteristics of the sprayed vines were significantly better than non-treated ones. Based on the obtained results, the foliar application of glutamic acid, vitamin B complex, and algae besides of their combinations has positive effects on the growth of grapevine plants and berry quality.

This experiment was carried out at Orchard, Faculty of Agriculture, Assiut University, in 2017 and 2018 seasons to study the effect of chitosan at 0.5, 1 and 2%, calcium chloride (CaCl2) at the rate of 2, 4 and 6% and Gibberellic acid (GA3) at 25, 50 and 100 ppm on cracking and fruit quality of "Manfalouty" pomegranate. The experiment was set in a Randomized complete block design (RCBD) with three replicates per treatment, one tree each. The results indicated that all treatments significantly decreased the fruit cracking and improved the yield and fruit quality comparing with control. No significant differences were found between chitosan, GA3 or calcium chloride at any used concentrations. It could be concluded that spraying either chitosan at 0.5%, GA3 at 50 ppm or CaCl2 at 2% twice on mid of June and August effectively reduced cracking and improve the yield and fruit quality on "Manfalouty" pomegranate.

This experiment was carried out at Orchard, Faculty of Agriculture, Assiut University, in 2017 and 2018 seasons to study the effect of chitosan at 0.5, 1 and 2%, calcium chloride (CaCl2) at the rate of 2, 4 and 6% and Gibberellic acid (GA3) at 25, 50 and 100 ppm on cracking and fruit quality of "Manfalouty" pomegranate. The experiment was set in a Randomized complete block design (RCBD) with three replicates per treatment, one tree each. The results indicated that all treatments significantly decreased the fruit cracking and improved the yield and fruit quality comparing with control. No significant differences were found between chitosan, GA3 or calcium chloride at any used concentrations. It could be concluded that spraying either chitosan at 0.5%, GA3 at 50 ppm or CaCl2 at 2% twice on mid of June and August effectively reduced cracking and improve the yield and fruit quality on "Manfalouty" pomegranate.

This study was conducted to evaluate the effect of spraying some growth regulators (CPPU at 15 ppm and GA3 at 100 ppm), some antioxidants (Amino acids at 0.50 g/L, citric acid at 500 ppm and ascorbic acid at 500 ppm) and active dry yeast at 10 g/L on yield and fruit quality of Seewy date palm during 2015 and 2016 seasons. The experiment was set up in a complete randomized block design with seven treatments and ten replicates, one bunch per each. Date palm were sprayed three times, at the 1 st week of May, June and July. Foliar application had a positive effect on yield and fruit quality of Seewy date palm. The best results were obtained with spraying GA3 at 100 ppm and CPPU at 15 ppm for increasing bunch weight, yield/palm, fruit weight, fruit length and diameter. On the other hand, spraying amino acids at 0.50 g/L and yeast at 10 g/L significantly increased TSS%, total sugars contents, and significantly decreased tannins %, total acidity % and fruit moisture content. So, it can be concluded that spraying GA3 or CPPU combined with any amino acid, yeast, citric acid or ascorbic acid three time (1, 2 & 3 month of pollination time) increased the palm yield and improved the fruit quality of Seewy date palm.

This study was conducted to evaluate the effect of spraying some growth regulators (CPPU at 15 ppm and GA3 at 100 ppm), some antioxidants (Amino acids at 0.50 g/L, citric acid at 500 ppm and ascorbic acid at 500 ppm) and active dry yeast at 10 g/L on yield and fruit quality of Seewy date palm during 2015 and 2016 seasons. The experiment was set up in a complete randomized block design with seven treatments and ten replicates, one bunch per each. Date palm were sprayed three times, at the 1 st week of May, June and July. Foliar application had a positive effect on yield and fruit quality of Seewy date palm. The best results were obtained with spraying GA3 at 100 ppm and CPPU at 15 ppm for increasing bunch weight, yield/palm, fruit weight, fruit length and diameter. On the other hand, spraying amino acids at 0.50 g/L and yeast at 10 g/L significantly increased TSS%, total sugars contents, and significantly decreased tannins %, total acidity % and fruit moisture content. So, it can be concluded that spraying GA3 or CPPU combined with any amino acid, yeast, citric acid or ascorbic acid three time (1, 2 & 3 month of pollination time) increased the palm yield and improved the fruit quality of Seewy date palm.

This experiment was carried out at the Experimental station of the faculty of Agriculture, Assiut University during two successive seasons 2016/2017 on Red Roomy grapevines. The beneficial effects of spraying Dormex at 4%, Salicylic acid at 5%, Garlic oil at 2%, camphor oil at 2% and Lemon grass oil at 2% on bud break and improve the Red Roomy production under warm climate were investigated. The experiment was arranged in a complete randomized design with three replicates per treatment, one vine per each. The results indicated that all treatments were very effective on breaking bud dormancy and improving the yield and quality of the berries compared with the check treatments. The best results regarding the improvement of cluster compactness coefficient, number of berries and berry setting were obtained with spraying lemon grass oil at 2% and camphor oil at 2%. No significant differences were found between Dormax and the other compounds. It could be concluded that using plant extracts i.e lemon grass oil, camphor oil and garlic oil as natural and safety substances were very effective to break bud dormancy and improve the grapevines fruiting.

This experiment was carried out at the Experimental station of the faculty of Agriculture, Assiut University during two successive seasons 2016/2017 on Red Roomy grapevines. The beneficial effects of spraying Dormex at 4%, Salicylic acid at 5%, Garlic oil at 2%, camphor oil at 2% and Lemon grass oil at 2% on bud break and improve the Red Roomy production under warm climate were investigated. The experiment was arranged in a complete randomized design with three replicates per treatment, one vine per each. The results indicated that all treatments were very effective on breaking bud dormancy and improving the yield and quality of the berries compared with the check treatments. The best results regarding the improvement of cluster compactness coefficient, number of berries and berry setting were obtained with spraying lemon grass oil at 2% and camphor oil at 2%. No significant differences were found between Dormax and the other compounds. It could be concluded that using plant extracts i.e lemon grass oil, camphor oil and garlic oil as natural and safety substances were very effective to break bud dormancy and improve the grapevines fruiting.

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