Pre-harvest Foliar Spray of Calcium, GA3, and Salicylic Acid to Enhance Apricot Yield and Fruit Quality Adel M. Al-Saif, Hosny F. Abdel-Aziz, Abd El-wahed N. Abd El-wahed, Sobhy M. Khalifa, Ibrahim A. Elnaggar, et al. Bioresources, 2025 The impact of different pre-harvest foliar sprays was assessed relative to the yield and quality of apricot fruits (cv. El-Amal) under field conditions. Apricot trees were sprayed with various solutions, including salicylic acid (SA at 250 and 750 ppm), calcium acetate [Ca(OAc)₂ at 2% and 4%], calcium chloride (CaCl₂ at 2% and 4%), and gibberellic acid (GA₃ at 25 and 100 ppm) at the pit hardening growth stage before harvest. All foliar spray treatments positively affected fruit yield per tree compared to untreated plants. The most effective treatments were CaCl₂ at 4% and GA₃ at 100 ppm, followed by SA at 750 ppm and Ca(OAc)₂ at 4%. All treatments significantly increased fruit weight compared to the control group. GA₃ also significantly improved fruit firmness, outperforming all other treatments. Additionally, CaCl₂ at 2% and SA at 250 ppm resulted in higher firmness. SA at 750 ppm exhibited higher total soluble solid (TSS) content. While the foliar spray treatment without any solution resulted in the lowest fruit acidity, SA at 250 ppm had the highest acidity. In conclusion, pre-harvest foliar application of GA₃ (100 ppm), CaCl₂ (2%), and Ca(OAc)₂ (4%) can effectively enhance fruit yield and improve quality of apricots.
Licorice-root extract and potassium sorbate spray improved the yield and fruit quality and decreased heat stress of the ‘osteen’ mango cultivar Adel M. Al-Saif, Haitham Ahmed El-khamissi, Ibrahim Ahmed Elnaggar, Mohammed Hamdy Farouk, Magdy Abd El-Wahab Omar, et al. Peerj, 2024 Heat stress, low mango yields and inconsistent fruit quality are main challenges for growers. Recently, licorice-root extract (LRE) has been utilized to enhance vegetative growth, yield, and tolerance to abiotic stresses in fruit trees. Potassium sorbate (PS) also plays a significant role in various physiological and biochemical processes that are essential for mango growth, quality and abiotic stress tolerance. This work aimed to elucidate the effects of foliar sprays containing LRE and PS on the growth, yield, fruit quality, total chlorophyll content, and antioxidant enzymes of ‘Osteen’ mango trees. The mango trees were sprayed with LRE at 0, 2, 4 and 6 g/L and PS 0, 1, 2, and 3 mM. In mid-May, the mango trees were sprayed with a foliar solution, followed by monthly applications until 1 month before harvest. The results showed that trees with the highest concentration (6 g/L) of LRE exhibited the maximum leaf area, followed by those treated with the highest concentration (3 mM) of PS. Application of LRE and PS to Osteen mango trees significantly enhanced fruit weight, number of fruits per tree, yield (kg/tree), yield increasing%, and reduced number of sun-burned fruits compared to the control. LRE and PS foliar sprays to Osteen mango trees significantly enhanced fruit total soluble solids ˚Brix, TSS/acid ratio, and vitamin C content compared to the control. Meanwhile, total acidity percentage in ‘Osteen’ mango fruits significantly decreased after both LRE and PS foliar sprays. ‘Osteen’ mango trees showed a significant increase in leaf area, total chlorophyll content, total pigments, and leaf carotenoids. Our results suggest that foliar sprays containing LRE and PS significantly improved growth parameters, yield, fruit quality, antioxidant content, and total pigment concentration in ‘Osteen’ mango trees. Moreover, the most effective treatments were 3 mM PS and 6 g/L LRE. LRE and PS foliar spray caused a significant increase in yield percentage by 305.77%, and 232.44%, in the first season, and 242.55%, 232.44% in the second season, respectively.
In Vitro Drought Tolerance of Some Grape Rootstocks Abdullah I. Alebidi, Adel M. Al-Saif, Hosny F. Abdel Aziz, Gamal A. Abdrabboh, Ibrahim A. Elnaggar, et al. Journal of Ecological Engineering, 2024 Climate change is increasing the frequency and severity of drought strain, which poses a first-rate task to grapevine production. This have a look at investigated the response of four grape rootstocks (Richter, Salt Creek, Freedom, and Dogridge) to water deficit prompted by way of polyethylene glycol (PEG). Two pressure induction techniques had been as compared: surprise remedy, related to direct exposure of cultures to growing PEG concentrations (0%, 2%, 4%, 6%, 8%, and 10%); and step-clever long-time period remedy, steadily increasing PEG concentrations (0%, 6%, 8%, and 10%) through the years. The essential findings were as fol - lows: drought strain negatively impacted all rootstocks, leading to decreased morphological tendencies (shoot number, period, and root number), survival %, and biochemical parameters (chlorophyll a and b, carotenoids, stomata popularity, RWC content material). It additionally led to reduced nutrient accumulation (N, P, K, Mg, Ca) in leaves. However, all rootstocks exhibited increased Proline content and antioxidant enzyme hobby under all PEG concentrations. In phrases of rootstock-unique responses, Richter and Salt Creek showed the maximum sturdy performance, maintaining better shoot and root growth, nutrient content, and photosynthetic hobby compared to Freedom and Dogridge. On the alternative hand, Freedom and Dogridge exhibited extra sensitivity to drought stress, experiencing stronger discounts in boom, biochemical parameters, and nutrient accumulation. In conclusion Richter and Salt Creek rootstocks could be valuable equipment for reinforcing drought tolerance in grapevines. The two carried out PEG remedies provide valuable methods for screening and deciding on drought-tolerant grape rootstocks.
Morphological, Physiological, and Biochemical Responses of Some Olive Tree Cultivars to Low Temperature Stress Adel M. Al-Saif, Hosny F. Abdel-Aziz, Haitham El-khamissi, Ahmed F. Abd El-Hakim, Abd El-wahed N. Abd El-wahed, et al. Bioresources, 2024 This study evaluated the impact of night frost incidents on the biochemical, physiological, and reproductive functions of the olive varieties Manzanillo, Coratina, Koroneiki, and Picual. Certain cultivars were more suited to moderate cold night stress than others, based on the changes in the performance of the stressed plants, including vegetative growth, tree yield, fruit physical characteristics, and fruit chemical characteristics. Compared to other tested cultivars, the biochemical responses of the plants in terms of photosynthetic pigments, relative water content (RWC), total phenolic compounds, total flavonoid, and antioxidant enzyme accumulation demonstrated that some cultivars could withstand the applied stress. The conclusion that some cultivars responded differently to cold stress than others was supported by the plant phenology. This research could be a game-changer for farmers. By understanding how olive trees adapt to cold snaps, a common stressor in open fields, they can make informed decisions about breeding and choosing the best cultivars, ultimately leading to more resilient crops. The results showed that all tested olive tree cultivars differ significantly regarding cold stress conditions. Coratina and Koroneiki were the most resistant tested cultivars in terms of biochemical, physiological, and reproductive functions, followed in ascending order by Manzanello and Picual.
Improvement of Fruit Quality and Phytochemical Components of Pomegranate by Spraying with B2O3 and ZnO Nanoparticles Adel M. Al-Saif, Ibrahim A. Elnaggar, Abd El-wahed N. Abd El-wahed, Ibrahim M. Taha, Hosny F. Abdel-Aziz, et al. Agronomy, 2023 Pomegranate is one of the most important and widely distributed trees. Boron and zinc are important nutrients for plant growth and fruit quality. Nanotechnology has emerged as one of the most innovative scientific fields in agriculture. This study was conducted to describe the changes in the physiochemical characteristics (weight, diameter, length, firmness and color), as well as the phytochemicals attributes (total phenolics, total flavonoids, ascorbic acid, anthocyanin and antioxidant %) and minerals contents, of pomegranates fruits of the ‘Wonderful’ cultivar as a result of spraying pomegranate trees using nanomaterials (zinc oxide (ZnONPs) and boron oxide (B2O3NPs)). In three successive developmental stages (full bloom, 6 weeks after full bloom and one month before harvest time), the trees were sprayed with 0.25, 0.5 and 1 g/L ZnONPs, as well as 0.25, 0.5 and 1 g/L B2O3NPs during the 2021 and 2022 seasons. The application of ZnONPs and B2O3NPs influenced the qualitative characteristics of the fruits in the studied seasons. The highest marketable % was observed for the 0.50 and 1 g/L ZnONPs and 1 g/L B2O3NPs compared to the other treatments. Also, a positive effect was recorded for the ZnONPs and B2O3NPs on the fruits’ physical properties. All of the ZnONP and B2O3NP treatments resulted in increasing the total phenolic, flavonoid, anthocyanin and ascorbic acid contents and the antioxidant activity in the pomegranate juices. In conclusion, our results suggest that spraying pomegranate trees with ZnONPs and B2O3NPs improves the marketable fruit, enhances the fruit quality and increases the bioactive components and antioxidant activity.
Natural Stimulators Gibberellic Acid, Naphthalene Acetic Acid CPPU and Seaweed Extract Foliar Sprays Enhances the Growth, Yield and Fruit Quality of'Zebda'Mango Trees MA Ahmed, GA El-Sayed, AE Hamdy, MA Shahda, MA Omar Egyptian Journal of Chemistry 69 (13), 367-378 , 2026 2026
Natural Products Foliar Sprays Enhances the Growth, Yield and Fruit Quality of'Zebda'Mango Trees MA Ahmed, GA El-Sayed, AE Hamdy, MA Shahda, MA Omar Egyptian Journal of Chemistry 69 (13) , 2026 2026
Foliar application of chitosan nanoparticles and N-ATCA enhances olive yield and oil quality A Elkelish, AEWN Abd El-Wahed, IA Elnaggar, HF Abdel-Aziz, AE Hamdy, ... Scientific Reports 16 (1), 15727 , 2026 2026
Evaluating the influence of magnetic iron as an eco-friendly soil amendment applications on agronomic and fruit quality parameters of ‘Fremont’mandarin AE Hamdy, AE Mekky, HF Abdel-Aziz, AEN Abd El-wahed, IA Elnaggar, ... Scientific Reports 16 (1), 14737 , 2026 2026
Evaluating Citrus Rootstock Tolerance to Osmotic Stress Induced by PEG in Vitro HF Abdel-Aziz, AEN Abd El, IA Elnaggar, AE Elboghdady, ... 2026
Evaluating the Influence of Magnetic Iron Applications on Agronomic and Fruit Quality Parameters of'Fremont'Mandarin AM Al-Saif, HF Abdel-Aziz, AEWN Abd El, IA Elnaggar, MH Farouk, ... 2026
A Comparative Study of the Growth, Yield, and Physiological Responses of Arbosana, Arbequina, Coratina, and Maraqi Olive Cultivars IA Elnaggar, HF Abdel-Aziz, AE Hamdy 2026
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Improving leaf chemical composition, yield, and fruit quality of Valencia orange trees through biochar soil application AM Al-Saif, AE Mekky, AENA El-wahed, HF Abdel-Aziz, IA Elnaggar, ... Scientific Reports , 2026 2026
Pre-harvest Foliar Spray of Calcium, GA3, and Salicylic Acid to Enhance Apricot Yield and Fruit Quality. AM Al-Saif, HF Abdel-Aziz, AEN Abd El-wahed, SM Khalifa, IA Elnaggar, ... BioResources 20 (4) , 2025 2025
Biodegradable Nanoparticle Coating from Banana Peel, Chi-tosan, and Salicylic Acid Enhances Shelf Life of ‘Murcott’Fruit I Elnagar, EM Hammad, AA Almashad, A Elmezien, HF Abdel-Aziz, ... Egyptian Journal of Chemistry 67 (13), 2089-2100 , 2024 2024 Citations: 2
Licorice-root extract and potassium sorbate spray improved the yield and fruit quality and decreased heat stress of the ‘osteen’mango cultivar AM Al-Saif, HA El-Khamissi, IA Elnaggar, MH Farouk, MAEW Omar, ... PeerJ 12, e18200 , 2024 2024 Citations: 2
Morphological, Physiological, and Biochemical Responses of Some Olive Tree Cultivars to Low Temperature Stress. AM Al-Saif, HF Abdel-Aziz, H El-khamissi, AFA El-Hakim, AENA El-wahed, ... Bioresources 19 (4) , 2024 2024 Citations: 3
Salt stress tolerance of banana (Musa acuminata L.) cv. Grandinin in vitro M El-khodary, AE Hamdy, HF Shehata Al-Azhar Journal of Agricultural Research 49 (1), 1-11 , 2024 2024
Nano-enhanced growth and resilience strategies for Pomegranate cv. Wonderful: Unveiling the impact of zinc and boron nanoparticles on fruit quality and abiotic stress management AEN Abd El, SM Khalifa, MD Alqahtani, AM Abd–Alrazik, H Abdel-Aziz, ... Journal of Agriculture and Food Research 15, 100908 , 2024 2024 Citations: 26
In vitro drought tolerance of some grape rootstocks AI Alebidi, AM Al-Saif, HFA Aziz, GA Abdrabboh, IA Elnaggar, ... Journal of Ecological Engineering 25 (4), 184-202 , 2024 2024 Citations: 4
The impact of bud load on berry quality, yield, and cluster compactness in H4 strain grapevines AM Al-Saif, MA Fahmy, GA Baghdady, AMA El-Razik, EA Kabsha, ... Agronomy 13 (9), 2431 , 2023 2023 Citations: 16
Using chitosan nanoparticles and N-acetyl thiazolidine 4-carboxylic acid for olive trees efficiency raising, improving fruits properties and oil quality KS Alshallash, IA Elnaggar, AN Abd El-Wahed, A Fahmy, AM Tawfeeq, ... Brazilian Journal of Biology 83, e273643 , 2023 2023 Citations: 7
Improvement of Fruit Quality and Phytochemical Components of Pomegranate by Spraying with B 2 O 3 and ZnO Nanoparticles AM Al-Saif, IA Elnaggar, AEN Abd El-wahed, IM Taha, HF Abdel-Aziz, ... Agronomy 13 (9), 2305 , 2023 2023 Citations: 9
Pruning boosts growth, yield, and fruit quality of old Valencia orange trees: A field study AM Al-Saif, HF Abdel-Aziz, SM Khalifa, IA Elnaggar, AEN Abd El-wahed, ... Agriculture 13 (9), 1720 , 2023 2023 Citations: 22
MOST CITED SCHOLAR PUBLICATIONS
Effect of GA3 and NAA on growth, yield and fruit quality of Washington navel orange AEHANAEW H. A. Hifny, S.M. Khalifa Egypt. J. Hort. 44 (1), 33-43 , 2017 2017 Citations: 67
Bee pollen as a functional product–chemical constituents and nutritional properties KS Alshallash, G Abolaban, SM Elhamamsy, A Zaghlool, A Nasr, A Nagib, ... Journal of Ecological Engineering 24 (2), 173-183 , 2023 2023 Citations: 42
Kaolin improves photosynthetic pigments, and antioxidant content, and decreases sunburn of mangoes: field study AE Hamdy, HF Abdel-Aziz, H El-Khamissi, NI AlJwaizea, AA El-Yazied, ... Agronomy 12 (7), 1535 , 2022 2022 Citations: 42
Using deficit irrigation strategies and organic mulches for improving yield and water productivity of mango under dry environment conditions A Alhashimi, AA Al-Huqail, MH Hashem, BMM Bakr, WME Fekry, ... Agriculture 13 (7), 1415 , 2023 2023 Citations: 30
Hydrogel Improved Growth and Productive Performance of Mango Trees under Semi-Arid Condition AE Hamdy Gels 8 (10) , 2022 2022 Citations: 27
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Postharvest physiology and biochemistry of Valencia orange after coatings with chitosan nanoparticles as edible for green mold protection under room storage conditions KS Alshallash, M Sharaf, HF Abdel-Aziz, M Arif, AE Hamdy, SM Khalifa, ... Frontiers in Plant Science 13, 1034535 , 2022 2022 Citations: 24
Hydrogel as a soil conditioner affecting the growth, yield, and fruit quality of ‘Murcott’mandarin trees under arid and semi-arid lands AE Hamdy, S Khalifa, H AbdEl-Aziz Al-Azhar Journal of Agricultural Research 45 (2), 76-85 , 2020 2020 Citations: 24
Pruning boosts growth, yield, and fruit quality of old Valencia orange trees: A field study AM Al-Saif, HF Abdel-Aziz, SM Khalifa, IA Elnaggar, AEN Abd El-wahed, ... Agriculture 13 (9), 1720 , 2023 2023 Citations: 22
Effect of Nitrogen Fertilization Added at Various Phenological Stages on Growth, Yield and Fruit Quality of Valencia Orange Trees Hifny, Fahmy, Baghdady, Abdrabboh, Hamdy Nature and Science 11 (12), 220-229 , 2013 2013 Citations: 19
GA 3 and Hand Thinning Improves Physical, Chemical Characteristics, Yield and Decrease Bunch Compactness of Sultanina Grapevines ( Vitis vinifera L.) KS Alshallash, MA Fahmy, AM Tawfeeq, GA Baghdady, GA Abdrabboh, ... Horticulturae 9 (2), 160 , 2023 2023 Citations: 17
The impact of bud load on berry quality, yield, and cluster compactness in H4 strain grapevines AM Al-Saif, MA Fahmy, GA Baghdady, AMA El-Razik, EA Kabsha, ... Agronomy 13 (9), 2431 , 2023 2023 Citations: 16
Effect of magnetic water on yield and fruit quality of some mandarin varieties AE Hamdy, SM Khalifa, SA Abdeen Ann Agric Sci 53, 657-666 , 2015 2015 Citations: 16
Effects of fogging system and nitric oxide on growth and yield of ‘Naomi’mango trees exposed to frost stress HF Abdel-Aziz, AE Hamdy, A Sharaf, AEN Abd El-wahed, IA Elnaggar, ... Life 13 (6), 1359 , 2023 2023 Citations: 13
Magnetic iron–improved growth, leaf chemical content, yield, and fruit quality of chinese mandarin trees grown under soil salinity stress K Alharbi, KS Alshallash, AE Hamdy, SM Khalifa, HF Abdel-Aziz, A Sharaf, ... Plants 11 (21), 2839 , 2022 2022 Citations: 13
The effect of different processing methods on the behavior of minerals content in food products KS Alshallash, M Shahat, MI Ibrahim, AI Hegazy, AE Hamdy, IA Elnaggar, ... Journal of Ecological Engineering 24 (3) , 2023 2023 Citations: 12
Effect of water stress on the growth, nutritional and biochemical status of two varieties of pomegranate seedlings AE Hamdy, SM Khalifa, SS Shawer, AAG Mancy Journal of Plant Production 7 (12), 1321-1329 , 2016 2016 Citations: 10
Improvement of Fruit Quality and Phytochemical Components of Pomegranate by Spraying with B 2 O 3 and ZnO Nanoparticles AM Al-Saif, IA Elnaggar, AEN Abd El-wahed, IM Taha, HF Abdel-Aziz, ... Agronomy 13 (9), 2305 , 2023 2023 Citations: 9
Effect of Pruning severity on Yield and Fruit Quality of two Mandarin Cultivars Hamdy Acta Hort. 9 (2016), 0000 , 2016 2016 Citations: 9
Using chitosan nanoparticles and N-acetyl thiazolidine 4-carboxylic acid for olive trees efficiency raising, improving fruits properties and oil quality KS Alshallash, IA Elnaggar, AN Abd El-Wahed, A Fahmy, AM Tawfeeq, ... Brazilian Journal of Biology 83, e273643 , 2023 2023 Citations: 7