Abstract:With population increase, lack of conventional fresh water resources and uncertainties due to climate change, there is growing interest in the arid and semi-arid areas to increase groundwater recharge with recycled water. Finding the best locations for artificial recharge of groundwater in such areas is one of the most crucial design steps to guarantee the long life and the sustainability of these projects. This study presents two ways to go about performing analysis; creating a suitability map to find out the suitability of every location on the map and another way is querying the created data sets to obtain a Boolean result of true or false map. These techniques have been applied on Sadat Industrial City which is located in a semi arid area in the western desert fringes of The Nile delta in the north west of Egypt. Thematic layers for number of parameters were prepared from some maps and satellite images and they have been classified, weighted and integrated in ArcGIS environment. By the means of the overlay weighted model in ArcGIS a suitability map which is classified into number of priority zones was obtained and it could be compared with the obtained true-false map of Boolean logic. Both methods suggested mostly the northern parts of the city for groundwater recharge; however the weighted model could give more accurate suitability map while Boolean logic suggested wider ranges of areas. This study recommends Boolean logic as a first estimator for locating the best locations as it is easier and not time consuming, while the overlay weighted model for more accurate results.

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The objective of the research was to improve the properties of grape cuttings to obtain strong and healthy plantlets and overcome the problems they encounter during cultivation in clay and sandy soils to become vigorous and healthy trees without using chemical fertilizer. This experiment investigated how to vermicompost tea and Plant Growth-Promoting Rhizobacteria (PGPR), individually or in mixed form, influenced the characteristics of grape cuttings cultivated in clay and sandy soils. Some physical and chemical parameters for cutting were measured such as parameters of vegetative growth and root, chemical parameters of plant, and soil parameters as CaCo3 % content, and total count bacteria CFU/g. The results proved that the type of soil affected the growth of cuttings. All treatments gave significant differences, compared with the control. Sometimes significant differences were found among treatments on parameters, and sometimes not. In general, the best effect on the growth of the cuttings was in a treatment that included the combination of vermicompost tea and PGPR, whether cultivated in sandy or clay soil, in both successive growing seasons.

This search studied the effects of some treatments, such as polyethylene stretch, paraffin oil, and salicylic acid (3 mM/L), in an individual form, at cold storage at 10°C ± 1 and 85% RH to prolong the storage period of mango fruits (Mangifera indica, L.cv. Alphonse). This experiment was conducted during two successive seasons (2019 and 2020) and demonstrated the influence of these treatments on the physical and chemical characteristics of mango during cold storage. Data illustrated that all treatments extended the storage period of mango until a month with as good condition as possible compared with the control by reducing the respiration rate that induced all the problems that fruits face during the storage period, and saving protective factors for fruits against infection with microorganisms. And not only had that but the storage period of the mango fruits coated, forty days, whereas the control could not reach this period because most of its fruits were spoiled. All treatments achieved the prolonging of mango storage, but the best effect was found in mango wrapped with polyethylene stretch followed by paraffin oil, while salicylic acid did not have a good impact in some characters. This study illustrated that it is preferable for the storage period of mango Alphonse to not exceed one month at a low temperature of not less than 10°C ± 1with 85% RH to get fruit in the best condition by wrapping it with polyethylene stretch, coated with paraffin oil or salicylic acid. Moreover, the best treatment was in fruits wrapped in polyethylene stretch.

This research studied the effects of Plant Growth-Promoting Rhizobacteria (PGPR), and vermicompost tea on the physical and chemical properties of pomegranate (Manfalouty cultivar) fruits during two consecutive seasons, 2020 and 2021. Trees were sprayed with PGPR (3 ml/liter of water), and vermicompost tea (one liter/20 liters of water), and also vermicompost was added (one liter / 5 liters of water) to the soil at a distance of 50 cm from the trunk of the tree, were used in separate or in combined forms, three times a year, the first one in the middle of July (after fruit set), the second after a month of the first application, and the last one after a month of the second. The results showed that all treatments increased and improved all parameters when compared to the control. The physical and chemical properties of the fruits improved to some extent in the second season compared to the first one, which was due to the cumulative effect of vermicompost in the soil. In comparison to the other treatments in the two seasons, the treatment that included three treatments as a mix of foliar application and soil addition had the best effectiveness.

Known, mango fruit is a climacteric and highly perishable fruit that requires specialized postharvest handling to extend its storage life. This research aimed to overcome these problems by demonstrating the impact of the edible coating such as Aloe vera and chitosan, used either separately or in combination form; in cold storage, on the; shelf life, and marketing period of mango fruit. Through two successive seasons 2019 & 2020, the influence of Aloe vera 75%, chitosan 2% was studied on; both physical and chemical properties; of mango fruit (cv. Langra) during cold storage (11 ± 1°C and 85% RH). All treatments prolonged the storage period reached to more than a month nearly 40 days in a good condition while the control reached 30 days only. On the fortieth day, all treatments gave positive effects on fruit storage but the best treatment was the combined Aloe vera with chitosan. This study recommended using the combination of chitosan and Aloe vera with cold storage to prolong the storage period of mango fruit until 40 days in good condition and to overcome the marketing and export abroad problems.

This study was carried out during two successive seasons 2018 and 2019 at the orchard of Faculty Agriculture, Assiut University. The aim of this study was to investigate the effect of spraying with GA 3 at 100 ppm, combined with BA at 50 ppm and/or IAA at 100 ppm on some physical and chemical characteristics and yield parameters of Sewy and Hayany date palm cultivars. The obtained results showed that all combinations of the used growth regulators decreased the fruit set and fruit retention percentages of both tested cultivars, while the average bunch weight (kg) and average yield weight (kg/palm) increased by these treatments during both studied seasons. Moreover, the fruit weight (g), flesh weight (g), fruit volume (cm 3 ) and flesh volume (cm 3 ) significantly increased as affected by all growth regulators applications for Sewy and Hayany cultivars during 2018 and 2019. All applied treatments of GA 3 , BA and IAA combinations decreased total soluble solids percentage (T.S.S%), reducing and total sugar content of Sewy and Hayany fruits, while it increased acidity content for both cultivars.