Alexandria Science Exchange Journal最新文献

{"title":"Efficacy of Certain Neonicotinoids Against Cotton Whitefly, Bemisia tabaci and Their Residues in Fruits and Leaves of Tomato Plants under Open Field Conditions","authors":"Mohamed Atia, Adnan Darwish, Awatef . S. Mansy","doi":"10.21608/asejaiqjsae.2024.332753","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2024.332753","url":null,"abstract":"Globally, neonicotinoids constitute a class of systemic insecticides that has become the most widely utilized group of insecticides. The efficiency of three neonicotinoid insecticides i.e. imidacloprid, thiamethoxam and dinotefuran at recommended dose were studied against the cotton whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) on tomato plants under the open field conditions. The results showed that imidacloprid was the most efficient insecticide against the nymphs of B. tabaci followed by thiamethoxam and dinotefuran. The general means of reduction percentages of B. tabaci nymphs were 85.75, 83.24 and 75.11% after the 1 st spray and 87.53, 85.03 and 73.96% after the 2 nd spray for imidacloprid, thiamethoxam and dinotefuran, respectively. Residues of the tested pesticides in/on tomato fruits and leaves were determined using a QuEChERS method. Initial amount of the three insecticides were higher in tomato leaves compared with fruits. The half-life values (t ½ ) for the three insecticides in tomato fruits were 2.71, 2.95 and 1.87 days for imidacloprid, thiamethoxam and dinotefuran, respectively. While these values in tomato leaves were 2.91, 3.322 and 2.108 days for imidacloprid, thiamethoxam and dinotefuran, respectively. The levels of residues were above the maximum residue limits (MRLs) up to 3, 6 and 6 days after spray (DAS) for imidacloprid, thiamethoxam and dinotefuran, respectively in tomato fruits. The determined PHI for imidacloprid, thiamethoxam and dinotefuran were 6, 9 and 9 DAS, respectively. Washing of treated tomato fruits with tap water, 10% sodium bicarbonate, and 10% vinegar for 15 min were reported to be highly effective in reducing the level of the three insecticides. The residues of the three insecticides in tomato fruits pose low health risks to consumers.","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"12 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140091149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antimicrobial and Antioxidant Activities of Propolis Water and Ethanolic Extracts","authors":"Marian Assaad, Effat Gouda Mohamed, Malak A. Helmy, Saad H. Masry","doi":"10.21608/asejaiqjsae.2023.320591","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.320591","url":null,"abstract":"For consumers, natural, healthy food should be used as a natural additive, replacing chemical additives. Propolis is one of the natural substances that can fulfill that role. Propolis contains bioactive compounds with antimicrobial and antioxidant capacity. The antimicrobial and antioxidant action of two different of propolis extracts: (i)Water extract of propolis (WEP) and (ii) Ethanolic extract of propolis (EEP). It was found that WEP has no antimicrobial effect on the tested undesirable examined microorganisms, while EEP varied in antimicrobial effect on them. The inhibition zone indicated that the high effect was found against Pseudomonas aeruginosa (21.36 mm) followed by Streptococcus pyogenes (16.24 mm), the lowest effect detected against Listeria monocytogenes ATCC19116 (10.50 mm) and had a moderate effect on Staphylococcus aureus NCTC 10788 (12.90 mm). The results of quantitative analysis of phenols and flavonoids in propolis extracts. WEP showed high content of gallic acid, p-hydroxy benzoic acid, catechin, syringic acid, benzoic acid, cinnamic acid and quercitin. On the other hand EEP was higher than WEP in p-coumaric acid, o-coumaric acid. It was clear that WEP had more antioxidant activity than EEP.","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"113 38","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aleurothrixus floccosus: an Invasive Pest Attacks Different Species of Citrus Trees in Alexandria Governorate, Egypt","authors":"Ahmed Soliman","doi":"10.21608/asejaiqjsae.2023.327455","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.327455","url":null,"abstract":"Since 2022, the woolly whitefly, Aleurothrixus floccosus (Maskell) (Hemiptera: Aleyrodidae) has been recorded as an invasive pest infesting different species of citrus trees which were peculiar and previously undetected. The infestations were observed on orange ( Citrus sinensis ), lemon ( C. limon (, grapefruit ( C. paradise ), mandarin ( C. reticulata ), and lime ( C. aurantiifolia ) in the campus of the Faculty of Agriculture (El-Shatby), Alexandria University, Egypt. A. floccosus arises frequently and causes a number of disorders; the leaves' lower surface was covered with a white mass of wax and an amount of honeydew which, served as a substrate for the black sooty mold growing. Following the initial observation, numerous reports of this particular insect emerged from different areas within the Alexandria governorate. However, no infestation with A. floccosus was noticed following a qualitative survey of various citrus varieties in some regions of Al Beheira governorate. These results highlight the need for further and intensive investigation and preventive. The morphological identification, damage symptoms and distribution of A. floccosus was reported in the present article.","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139131140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Control of the Mango Shield Scale, Milviscutulus Mangiferae (Green) by Two Bio Rational Insecticides","authors":"Mohamed Rezk, Ahmed Abdel-Aty","doi":"10.21608/asejaiqjsae.2023.331226","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.331226","url":null,"abstract":"Verticillium lecanii (Zimm) conidia were formulated in our laboratory (a myco-insecticide), WP (2.5%) and tested for its reduction on the mango shield scale, M. mangiferae (Green) different stages on the host plant trees comparing with a commercial insecticide (Pyriproxyphen (Admiral), 10% EC) for their reduction of each M. mangiferae stage as well as its total population. All the treated insect stages populations were differently affected in a function of the treated stage and the time after treatment (exposure time). The formulated bio-insecticide (myco-insecticide) was significantly more toxic than pyriproxyfen (admiral) in its effect on adult population especially after two weeks of treatment during the two season’s treatment. It showed an effect similar to the pyriproxyfen (admiral) against the other stages. Both the 1 st and the 2 nd nymph instars were less affected than the other treated stages (adult and crawler) with the two tested bio-insecticides. The low toxicity of the formulated V. lecanii to non-target biota encouraged us to stress on its entrance to the entomopathogenic fungi clique against the examined insect,","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"121 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Financial and Economic Analysis of Azolla Production in South Sinai Governorate","authors":"Ahmed Hassan Abo Shama Abdel Sadek","doi":"10.21608/asejaiqjsae.2023.330091","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.330091","url":null,"abstract":"ABSTRACT","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"117 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139135481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of Tribinuron–methyl, Fluroxypyr and their Combinations in Controlling Broad-Leaved Weeds in Wheat","authors":"Alaa Khozimy, S. Hamada, Mohamed O. Abuzeid","doi":"10.21608/asejaiqjsae.2023.331365","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.331365","url":null,"abstract":"Field experiments were conducted at Itay EL-Baroud-Agricultural Research Station, Itay EL-Baroud, Beherah Governorate, Egypt, during the seasons 2020-2021 and 2021-2022. The objective was to evaluate the efficacy of tribinuron-methyl, fluroxypyr and their combinations in controlling broad-leaved weeds in wheat fields. Hand weeding was performed at 15 and 30 days after sowing (DAS), while the herbicides were applied at 15 days after sowing (DAS). At harvest, fresh and dried weed biomasses (g m -2 ) were measured, as well as certain agronomic wheat crop parameters such as 1000 grain weight (grams), wheat grain and straw yields (kg fed -1 ). The results showed that all of the tested formulations significantly reduced the biomass of weeds including both fresh and dried biomasses of annual broad-leaved weeds. Melilotus indica L., Beta vulgaris L., Sinapis arvensis L. and Cichorium pumpilum Jacq., which were the most predominant weeds in the wheat field during both seasons. Throughout the two seasons of investigation, the combinations of tribinuron-methyl+ fluroxypyr demonstrated the most significant reduction in both weed control efficiency (WCE) and the fresh weight of annuls of broad-leaved weeds. These compositions improved all wheat crop biological parameters, including grain and straw yields, throughout the investigated two seasons, and were followed by hand weeding.","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"107 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alleviating the Effects of High-Temperature Stress on Parsley Plants by Foliar Application of Proline, Glycine Betaine, and Salicylic Acid","authors":"S. Brengi, Ibrahim N. Nasef","doi":"10.21608/asejaiqjsae.2023.326581","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.326581","url":null,"abstract":"Low temperatures and high relative humidity are ideal for parsley's growth and high quality, making it a distinctive herbaceous vegetable with medicinal properties. Despite the growing local and export demands, meeting these conditions, during the summer season, in Egypt is challenging. Therefore, this study aimed to alleviate the harmful effects of high temperatures stress on the growth and quality of Balady variety of parsley by foliar application of proline, glycine betaine, and salicylic acid. Two field experiments were conducted under a sprinkler irrigation system, in Wadi El-Natroun-Beheira Governorate, during the summer seasons of 2020 and 2021. The following seven treatments were studied: proline (Pr1;2.5 mM l −1 ),(Pr2; 5 mM l −1 ), glycine betaine (GB1;40 mM l −1 ), (GB2; 60 mM l −1 ), salicylic acid (SA1;5 µM l −1 ), (SA2;10 µM l −1 ), and control (distilled water) as a foliar spray. The findings indicated that the optimal treatments for enhancing vegetative growth (leaf fresh weight every cut, leaf dry weight every cut, total plant fresh and dry weight per season, and the total yield of plant fresh and dry weight per M 2 ) were Pr2, GB2, and SA1, in progressive order. Conversely, the least effective treatments were the control, followed by SA2 treatment, in both seasons. The application of SA and GB treatments resulted in enhancements in the content of ascorbic acid, chlorophyll, nitrogen, phosphorus, potassium, protein, and total oil in the parsley leaves. Where, SA1 and the GB2 treatments exhibited the most pronounced impact. At the same time, the Pr2 treatment showed the most significant effect on the proline and oil contents compared to the control, in both seasons. The phenols and fibers exhibited contrasting characteristics, with the control treatment giving the highest values, followed by SA2. Generally, the results indicate that the most effective treatments for enhancing the growth and quality of parsley plants grown under high-temperature stress conditions were with the foliar application of glycine betaine at a concentration of 60 mM l −1 and salicylic acid at a concentration of 5 µM l −1 .","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"41 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139131164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Some Natural Oils on Prolonging the Storage Period of Winter Guava Fruits (Psidium guajava L.)","authors":"Hadil El-Bana, Hassan Ennab","doi":"10.21608/asejaiqjsae.2023.319909","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.319909","url":null,"abstract":"Essential oils have antioxidant and antimicrobial properties, so it is considered one of the most suitable methods to maintain overall fruit quality, reduce decay and extend the shelf life of fruit during storage. Therefore, two experiments using fruits harvested from 14-year-old guava trees in a private farm located in Al-Busayli village, Rashied, Bohaira governorate, Egypt, during the 2021and 2022 seasons. The primary objective was to evaluate the influence of essential oils on the overall quality and extension of the shelf-life of winter guava fruit. The fruits were subjected to various treatments, including dipping in the following solutions (at 1000 ppm) for 5 minutes: control (distilled water), clove oil, eucalyptus oil, mustard oil, and jojoba oil. Subsequently, the coated fruits with essential oils were preserved in cold room with a temperature of 7±1°C and a relative humidity of 90 – 95 % for a duration of 24 days. The obtained data revealed that immersing in essential oils of winter guava fruits at concentration of 1000 ppm significantly reduced loss in weight of fruit, rot and respiration rate in addition its also improved fruit firmness. SSC%, acidity, SSC/acid ratio and ascorbic acid content compared to control treatment during cold storage. Moreover, the results show a significant reduction in loss of weight, decay, and respiration rate of guava fruits when Eucalyptus and clove oils were utilized. Furthermore, the applications of Eucalyptus and clove oils demonstrated effectiveness in keeping firmness, acidity, vitamin C content, SSC%, and SSC/acid ratio in guava fruits during the storage. In conclusion, Eucalyptus oil and cloves oil proved to be highly effective in reduce weight loss, decay, and respiration rates while concurrently maintaining the overall quality of winter guava fruits under cold storage conditions for a duration of 24 days, in comparison to the other treatments.","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Storage Periods on the Quality Characteristics, Fatty Acid Profile and Protein Patterns of Table Eggs","authors":"Faten Abdel-salam, Ramadan Attia, Sameh Awad","doi":"10.21608/asejaiqjsae.2023.321517","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.321517","url":null,"abstract":"The present study was carried out to detect the effect of different storage temperature and duration on the chemical, physical and functional properties of table eggs. Eggs characterization and proximate analysis showed that the moisture content of fresh whole egg, egg white and egg yolk was found to be 72.95, 87.69 and 49.65 %, respectively. The protein content of the whole egg, white and yolk was 49.17, 93.12 and 33.21 % (on a dry weight basis). Egg-yolk and whole egg were found to contain a fat content of 59.46 and 41.96%, respectively, while egg white was almost free of fat being 0.16%. The ash content of whole eggs, white and yolk was 5.06, 5.12 and 2.38%, respectively. The weight of fresh eggs was 45.55 ± 2.41 g and decreased to a range of 42.01 g to 38 g after 21 days of storage at incubation temperature. During the storage period at different conditions, a significant reduction (P ≤ 0.05) in the yolk index value was found. The albumin pH of the fresh egg was 6.86 and decreased by storage for 21 days at different conditions. The peroxide value increased from 0.704 to 0.84, 1.02, and 1.31 meq O 2 /kg oil for eggs stored for 21 days at refrigeration, ambient temperature, and incubation, respectively. The results illustrated that the foam capacity of eggs decreased with further storage. However, eggs stored at refrigeration had considerably higher foam capacity than those stored at ambient temperature and incubation at 32 ◦ C. The results indicated that the foam of eggs stored at refrigeration was more stable than that stored at both ambient temperature and in the incubator. Oleic acid was the major fatty acid in fresh eggs accounting for 46% of the total fatty acids, whereas palmitic and linoleic acids represent 24.8 and 15.5% of the total acids. The SDS-PAGE proteins pattern showed five dominant polypeptide components and four minor bands in the egg proteins.","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"105 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Relationship of Rural Women’s Social Intelligence to their Ability to Face Life Pressures in Some Villages in Al-Sharqiya Governorate","authors":"Marwa Abdel Monem Abdel Ghany shalaby Elfeky","doi":"10.21608/asejaiqjsae.2023.321498","DOIUrl":"https://doi.org/10.21608/asejaiqjsae.2023.321498","url":null,"abstract":"ABSTRACT","PeriodicalId":7560,"journal":{"name":"Alexandria Science Exchange Journal","volume":"121 41","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}