Thanaa Shaban Mohamed Mahmoud

• Associate Professor of Fruit science
• Professor (Assistant) at National research center

Ozone is a powerful oxidising agent, which can kill microorganisms if they are exposed to a high enough dosage for a sufficient period of time. So, this study was carried out during 2020-2021 seasons to explore the effect of different doses of gaseous ozone (10, 20, and 40 ppm for 15, 30, and 45 min, respectively) on physicochemical properties, mai...

Background Intercropping systems play an effective role in increasing the efficiency of land usage and improving the economic return. During the seasons of 2018 and 2019, the field experiment was conducted to evaluate the effects of snap bean intercropping on the growth and nutritional status of young almond trees. Examine the impact on snap bean p...

This study was conducted at Ismailia Desert in Egypt during two seasons 2019 and 2020 to investigate the effect of biochar or/ and compost with SGF reclamation amendments (sulfur, gypsum, farmyard manure) on soil properties of saline loamy sand soil irrigated with saline water and yield of Picual olive trees. The results showed that soil hydro-phys...

This work was conducted during two consecutive seasons, 2016/2017 and 2017/2018, at Experimental Research Station of National Research Centre at Nubaria, El Behiera governorate, Egypt. Twelve-year-old Valencia orange trees (Citrus sinensis L. Osbeck) budded on Volkamer lemon rootstock, grown in sandy soil under drip irrigation system were used as p...

A comparative study was conducted during the 2017/2018 and 2018/2019 growing seasons for Nonpareil and Ne Plus Ultra almond cvs grafted on Bitter almond and Nemaguard peach rootstocks at the Experimental Research Station of National Research Centre at Nubaria, El Behera governorate, Egypt. The comparison was evaluated through the grafting success p...

Background At present, agricultural production management techniques focus on greater commitment to environmental sustainability. As such, this study was carried out during two successive seasons (2018 and 2019) to investigate the impact of two natural bio-stimulant substances: humic acid (H) and milagro (M) on vegetative growth and nutritional sta...

Background Plum fruit has a short shelf life with a rapid deterioration in quality after harvest. The main aim of this study was to evaluate the effect of preharvest treatments by moringa leaf extract (MLE), boric acid (B), and chelated calcium (Ca EDTA) on Hollywood plum fruit quality attributes bioactive compounds and antioxidant activity during...

Background Slow-release fertilizers (SRF) are quite numerous, and diverse group of materials are involved in the improvement of the effectiveness of fertilization, mitigation of the negative impact of fertilizers on the environment, and the reduction of labor and energy consumption connected with the application of conventional fertilizers. The obj...

Abstract Background Sowing time and suitable planting media are considered basic requirements to get the maximum yield and high profit for their direct and significant impact on seedlings quality and productivity of trees later. So this experiment has been carried out in a private nursery at Gharbiya Governorate, Egypt, during the seasons of 2016 a...

To determine the effect of planting dates and different growing media on photosynthetic pigments and some minerals concentrations of pistachio (Pistachia vera L.) cv. "Ashoury", the present study was conducted during two growth seasons (2016-2017) in a private nursery at Gharbiya governorate, Egypt. The treatments were prepared with combination bet...

To determine the effect of planting dates and different growing media on photosynthetic pigments and some minerals concentrations of pistachio (Pistachia vera L.) cv. "Ashoury", the present study was conducted during two growth seasons (2016-2017) in a private nursery at Gharbiya governorate, Egypt. The treatments were prepared with combination bet...

Wonderful pomegranate fruits were coated with 10, 15 or 20% concentrations of Aloe vera gel (Aloe barbadensis Miller) combined with almond or coconut oil to study their effects on physical and chemical fruit properties when the fruits were stored at 5 o C and 85-90% RH for a total storage period of 45 days and compared with the untreated fruits (co...

A nursery experiment was conducted in the National Research Centre (NRC), Dokki, Giza, Egypt to determine the effect of water soaking periods for 12, 24 and 36 hours on pistachio seeds germination and subsequently seedlings growth characteristics of Pistacia vera L. "Ashoury" cultivar. The results showed that soaking seeds for 36 hours gave the hig...

ABSTRACT Background: The successful orchard management practices are directed toward obtaining a suitable yield with good fruit quality. One of the most important cultural practices is the mineral nutrition especially in the new reclaimed lands. Under sandy soil conditions the water and nutrient holding capacity is poor, so foliar application is a...

A field trial was conducted to determine the effect of nitrogen fertilizer rates and dates of added on the yield, fruit quality and oil of "Manzanillo" olive trees in a private orchard at Cairo-Alexandria desert road (about 50 Km from Cairo), Egypt. The application of ammonium sulphate at the rate of 1 kg /tree in each of February, May, June and Au...

Chitosan and some natural plant extracts were tested to maintain post harvest quality of Navel orange. The treatments included control (distilled water), chitosan at 2% and three aqueous plants extracts namely; olive water at 4%, rosemary at 4% and lemongrass at 3%.The fruits were stored for 12 weeks at 5±1°C and 90% RH during two successive season...

This investigation was carried out during 2015 and 2016 seasons on twelve trees five years old of “Hollywood” plum trees (Prunus salicina Lindl.) grown in loamy clay soil in a private orchard at Ashmoun, Monofia, governorate, Egypt. Trees were sprayed with (0%, 4%, 5%, 6%) moringa (Moringa oleifera L.) leaf aqueous extract at full bloom stage+fruit...

A field experiment was conducted on almond seedlings (Prunus amygdalus B.) cv. Nonpareil to study the effect of low-biuret urea (LBU) and humic acid foliar spray on growth and leaf nutrient status at two seasons (2014 and 2015) in El Tor, South Sinai governorate, Egypt. There were nine treatments namely, T1-Control, T2-2 g/L LBU, T3-3 g/L LBU, T4-2...

This study was carried out in two successive seasons 2014 & 2015 on two year old almond (Prunus amygdalus Batsch cv. Nonpareil) seedlings at El Tor, South Sinai governorate, Egypt. The investigation aimed to study the effect of foliar application with liquorice root extract (5, 10 g/L), bread yeast suspend (5, 10 g/L) alone or in combinations on se...

This experiment was carried out during 2014 and 2015 seasons on Wonderful pomegranate fruits (Punica Granatum L.) to study the effect of postharvest treatments with potassium sorbate (PS) at 3, 1.5 % and polyethylene film wrapping on keeping quality during storage. Fruits stored at 5±1°C and 90% relative humidity (RH) for 14 weeks. The results show...

To decreasing fruit abscission, increasing yield and improving fruit quality of Santa Rosa (Prunus salicina Lindl.) plum; amino acids (AA), naphthalene acetic acid (NAA) and naphthalene acetamide (NAD) and combination of them were applied with different concentrations two times; at full bloom stage and one week after fruit setting stage during 2015...

This study was conducted during two successive seasons 2009 and 2010 on ten years old “Manzanillo” olive trees, planted at 5 × 5 m grown in sandy soil in a private orchard at Cairo-Alexandria desert road (about 50 km from Cairo), Egypt. The investigation aimed to study the effect of dates of ammonium sulphate 20.6%N applications as nitrogen fertili...

Fourier Transform Infrared (FT-IR) was used to study the effect of fertilization with ammonium sulphate (NH4)2SO4 on nitrogen, chlorophyll and starch contents in Manzanillo olive leaves. Ammonium sulphate was applied at rate of 1kg/tree in each of February, May, June and August respectively. Studying FT-IR spectra of leaves were recorded at the beg...

Seaweed extract (Ascophylum nodosum L.) and amino acids were studied as a foliar applications on the growth, leaf mineral content, fruit set, yield, fruit quality and storability of apple cv. “Anna” under cold storage conditions. Anna apple trees treated with mixture of seaweed extract (2 ml L-1) plus amino acids (0.5 ml L-1) exhibited significantl...

The application of magnesium sulphate at the rate of 100g/tree in each of January, April, June and August increased significantly vegetative growth, photosynthetic pigments, leaf mineral contents (N, P, K and Mg), carbohydrates content in leaves, flowering characteristics (density, perfect flowers %, initial and final fruit set), fruit quality (wei...

An experiment was conducted in 2013 and 2014 with three newly introduced cultivars of apricot (Prunus armeniaca L.), namely "Antonio Errani", "Tirynthos" and "Ninfa" to study their performance and adaptability under Egyptian conditions. Results indicated that calculating the chilling hours temperature at or below 15°C was more suitable than tempera...

This study was carried out during 2013 and 2014 on ten years old Manzanillo olive trees, planted at 5 X 5 m in sandy soil in a private orchard located at 50km. of the Cairo -Alexandria desert road, Egypt. 6-benzyladenine (BA) at 0, 40, 60, 80 and 100 mg.L-1 were sprayed twice; at the first week of April and one month later at both seasons. Chloroph...

Fruits of Apricot (Prunus armeniaca L.) varity Canino mature trees growing in loamy clay soil at the experimental orchard of the Horticulture Research Station at El Kanater El Khayreia, Kalubia Governorate, Egypt, were sprayed once at full bloom during seasons 2013 & 2014 with yeast extract at 10, 20 and 30 g/L, humic acid as Actosol® (contains 2.9...

This study was conducted during two successive seasons 2009 and 2010 on ten years old ''Manzanillo'' olive trees, planted at 5 X 5 m and grown in sandy soil in a private orchard at Cairo-Alexandria desert road (about 50 Km from Cairo), Egypt. The present investigation aimed to study the effect of girdling times on flowering , fruit set, fruit quali...

This study was carried out during 2013 and 2014 on ten years old Manzanillo olive trees, planted at 5 X 5 m in sandy soil in a private orchard located at 50km. of the Cairo-Alexandria desert road, Egypt. 6-benzyladenine (BA) at 0, 40, 60, 80 and 100 mg.L-1 were sprayed twice; at the first week of April and one month later at both seasons. Chlorophy...

This investigation was carried out to evaluate the effect of foliar application of benzyladenine (BA) at concentration 10, 20, 30 and 40 ppm on growth, photosynthetic pigments, mineral status, total carbohydrates content, flowering, fruiting characteristics, yield/tree and oil content of Manzanillo olive trees. The experiment was performed during s...