Science Journal

 

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ISSN 1553-9865 (print); ISSN 2163-8950 (online), doi prefix: 10.7537, Monthly
Volume 11 - Issue 4 (Cumulated No. 118), April 25, 2019

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CONTENTS  

No.

Titles / Authors /Abstracts

Full Text

No.

1

Compare motivations and barriers to the use of electronic discussion groups Between members of the discussion group e-Library (LIS & PUBLIB)

 

Soraya ziaei1, Shabnam danaaii2*

 

1. PhD in Information science, and knowledge science. Iran

2. MA in Information science, and knowledge science. Iran

Corresponding author Email: acceptpaper@yahoo.com

 

Abstract: Nowadays, with the increasing use of the Internet, using electronic discussion groups as a tool for knowledge sharing is considered. The population of librarians who are members of a LIS discussion group e-Library and a PUBLIB discussion group e-Library. This study explored the motivations and barriers to the use of electronic discussion groups are among the research population. The research method used in this study is descriptive and analytical. Collected data using SPSS software and descriptive statistics And Inferential statistical tests were analyzed. After analyzing the data it became clear that most members of the LIS Women in the age group of 20-30 years and Bachelor of Education And Most members of PUBLIB Women in the age group over 50 years old and are Bachelor of Education. After evaluating the data, a significant difference was found between The barriers to the use of electronic discussion groups, in electronic discussion groups. Check Restrictions on the use of discussion groups between Show Internet problems (easy access, speed and cost), false news and rumors, and do not expect a significant performance Electronic discussion group LIS More PUBLIB electronic discussion group is. Informed of special events each discipline Between members of LIS electronic discussion group And use the knowledge and expertise of group members Between members of PUBLIB electronic discussion group Topics are the most motivated to use e-form discussion groups.

[Soraya ziaei, Shabnam danaai. Compare motivations and barriers to the use of electronic discussion groups Between members of the discussion group e-Library (LIS & PUBLIB). Researcher 2019;11(4):1-11]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 1. doi:10.7537/marsrsj110419.01.

 

Key words: LIS electronic discussion group, PUBLIB electronic discussion group, Group discussion Ferdowsi University, Email, Knowledge Sharing, Electronic discussion group incentives, Barriers to electronic discussion groups

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2

Effect of Prebiotics in Intestinal bacteria of Broilers

 

Kh. M. Elbayoumi1, Eman R. Hassan1, Nagwa S. Rabie1 and Mona S. Zaki2

 

1Department of Poultry Diseases, National Research Centre, Dokki, Giza, Egypt

2 Hydrobiology Departments, National Research Centre, Dokki, Giza, Egypt

dr_mona_zaki@yahoo.com

 

Abstract: Prebiotics are widely used nowadays commercially in poultry industry, they are not digested inside bird gut but are metabolized by specific members of normally inhabitant microflora resulting in many beneficial effects for host body including induce unfevrable condition for pathogenic bacteria and improve overall productivity. Fermentable oligosaccharides considered one of the best widly used prebiotics in poultry production, work through many mechanisms including their neutrient value for host cell, preventing pathogenic bacteria adherence to intestinal cell, stimulation host non-specific immune response and finally improve intestinal histological structure such as crypts length – depth for better digestibility. Recently it was proved that prebiotic's become an antibiotic alternative inorder to produce what's is called green food through enhancing normal inhabitant microflora activities resulting in control of many pathological pathogens either by interference on active side or production of many metabolites producing unfevrable media for those pathogenic bacteria.Our review will give a sight on role of prebiotics on broiler productivity and their way of working inside bird body in order to improve chicken gut health. Also their effect on normal inhabitant microorganism, their effect on bird immunity, together with effect of prebiotics on histological appearance of intestinal tract which will support nutrient digestibility which will reflected on poultry performance and better carcass quality.

[Kh. M. Elbayoumi, Eman R. Hassan, Nagwa S. Rabie and Mona S. Zaki. Effect of Prebiotics in Intestinal bacteria of Broilers. Researcher 2019;11(4):12-14]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 2. doi:10.7537/marsrsj110419.02.

 

Key words: Prebiotic - broiler – intestinal bacteria – control.

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3

Trials for All Alleviating the Adverse Effects of Soil and Water Irrigation Salinity on Fruiting Of Early Sweet Grapevines

Faissal F. Ahmed1 and Asmaa A. Ibrahim 2

1Hort. Dept. Fac. of Agric. Minia Univ., Egypt
2Viticulture Res. Dept. Hort. Res. Instit. ARC, Giza, Egypt
faissalfadel@yahoo.com
 

Abstract: During 2016 and 2017 seasons, nine materials namely ethrel, gibberellic acid, abscisic acid, manitol, chitosan salicylic acid, silicon, selenium and proline each at 50 ppm were tested for their effects on counteracting the adverse effects of soil and irrigation water salinity on fruiting of Early sweet grapevines grown under Minia region conditions. The vines received three sprays, the first spray at growth start, the second one was performed just after berry setting and the third one was conducted at one month later. Treating the vines with any one of the nine materials namely ethrel, gibberellic acid, abscisic acid, manitol, chitosan salicylic acid, silicon, selenium and proline each at 50 ppm was responsible for enhancing all growth aspects, photosynthetic pigments, N, P, K and Mg, proline, yield and both physical and chemical characteristics of the berries compared to the control treatment. An obvious differences were recorded on the investigated parameters among the nine tested materials. The effectiveness of these materials on controlling salinity could be arranged on follows, in ascending order ethrel, gibberellic acid, abscisic acid, manitol, chitosan, salicylic acid, silicon, selenium and proline. For counteracting the harmful effects of soil and water salinity on growth, vine nutritional status, yield and fruit quality of Early sweet grapevines grown in saline stress, it is recommended to spray the vines three times with proline or selenium acid each at 50 ppm.
[Faissal F. Ahmed and Asmaa A. Ibrahim. Trials for All Alleviating the Adverse Effects of Soil and Water Irrigation Salinity on Fruiting Of Early Sweet Grapevines. Researcher 2019;11(4):15-22]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 3. doi:10.7537/marsrsj110419.03.

Keywords: Early sweet grapevines, ethrel, gibberellic acid, abscisic acid, manitol, chitosan, salicylic acid, silicon, selenium and proline, soil and water salinity, growth, vine nutritional status, yield and berries quality.

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4

Macroalgae in marine fish farms at Egypt (Ismailia province)

 

Noor El Deen A. I1; Mosad M2 and Eissa, I A3 and Mona S. zaki1

 

1 Hydrobiology Department, Veterinary Division, National Research Centre, Egypt.

2 Department of Marine Sciences, Faculty of Science, Seuz Canal University, Egypt

3Fish diseases and breeding department, Veterinary Medicine. Seuz Canal University, Egypt.

drmonazaki@yahoo.com

 

Abstract: The aim of this study is assessing the possibility of detection of the most predominant agents which causes high losses in some marine fishes. Identification the most appropriate algae to feed the marine fishes. Many species of the Seaweeds of the Suez Canal are important and can be used as a marine resource of the area and being used as human food, fish feed and raw material for many industries.

[Noor El Deen A. I.; Mosad M. and Eissa, I. A. and Mona S. Zaki. Macroalgae in marine fish farms at Egypt (Ismailia province). Researcher 2019;11(4):23-31]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 4. doi:10.7537/marsrsj110419.04.

 

Key words: Seaweeds, marine, Ismailia, improvement

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5

Calcium Status in Preschool Asthmatic Children

 

Prof. Magdy M. Ashmawy Sakr1; Prof. Mohammad I. Abdel ـ Aal1, Dr. Mahmoud F.M. Salem2; Mohammad Y. M. Abdel ـSalam1

 

1Pediatrics Department, Damietta Faculty of Medicine, AlـAzhar University, Egypt.

2Clinical Pathology Department, Damietta Faculty of Medicine, AlـAzhar University, Egypt.

mohamedyouness986@gmail.com

 

Abstract: Background: Asthma is a chronic inflammatory condition of the lung air ways resulting in episodic air flow obstruction and it is a global health problem affecting an estimated 330 million individuals worldwide with a reported prevalence of 5-20% in children aged between 6-15 years. Calcium is the fifth most abundant element in the human body and is essential for life. It has a key role in many physiological processes including skeletal mineralization, muscle contraction, nerve impulse transmission, blood clotting, and hormone secretion. Objective: Assess the calcium status in preschool asthmatic children. Patients and method: It was a cross sectional study, which conducted at Al-Azhar University Hospital, New Damietta City, in the period from April 2017 to April 2018. Results: The prevalence of asthma in our cases was more frequent among rural (60%) than urban (40%) areas. There were no statistically significant difference in total and ionized calcium regarding severity of asthma. There was positive correlation at total calcium regards heart rate and white blood cells. There was positive correlation at ionized calcium regards white blood cells, but there was negative correlation regards potassium. There was positive correlation at eosinophils regards heart rate and white blood cells. Conclusion: Hypocalcaemia appears to be a risk factor for development of asthma in children. Severity of asthma was not related to the serum calcium level.

[Magdy M. Ashmawy Sakr; Mohammad I. Abdel ـAal, Mahmoud F.M. Salem; Mohammad Y. M. Abdel ـSalam. Calcium Status in Preschool Asthmatic Children. Researcher 2019;11(4):32-37]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 5. doi:10.7537/marsrsj110419.05.

 

Key words: Calcium – Preschool children – Asthma

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6

Comparative study of hysteroscopy & transvaginal sonography and saline infusion sonography with endometrial biopsy in detection of endometrial pathology in women with postmenopausal bleeding

 

Mofeed Fawzy Mohamed 1, Farid Ibrahim Hassan 1, Ibraheem Hassan Mohamed 2, Ahmed Salah Mohammed Nawara 1

 

1. Department of Obstetrics and Gynecology - Faculty of Medicine - Al-Azhar University.

2. Department of Pathology - Faculty of Medicine - Al-Azhar University.

dr_nowara@yahoo.com

 

Abstract: Objectives: To compare the accuracy of both 2D‐transvaginal ultrasound, saline infusion sonography and hysteroscopy with endometrial samples in the detection of endometrial pathology in women with postmenopausal bleeding and to know the most sensitive method in diagnosis. Methods: A prospective, comparative study included 100 patients with postmenopausal bleeding were subjected to transvaginal ultrasound, saline infusion sonography, diagnostic hysteroscopy and curettage followed by the histopathological examination of the specimens. Results: Overall sensitivity rates were 88% for TVS, 91% for SIS and 98% for HS, while overall specificity rates were 67%, 80% and 83%, respectively. HS had PPV of 88% and NPV of 97%, whereas PPV was determined to be 85 versus 87% and NPV was 70 versus 89% for TVS and SIS, respectively. Conclusion: Measurement of endometrial thickness using ultrasound is of limited value. saline infusion sonography is superior to ultrasound & very close to hysteroscopy, especially with intra‐cavitary lesions. Hysteroscopy remains the gold standard for assessment of the uterine cavity, but cannot replace the histopathology.

[Mofeed Fawzy Mohamed, Farid Ibrahim Hassan, Ibraheem Hassan Mohamed, Ahmed Salah Mohammed Nawara. Comparative study of hysteroscopy & transvaginal sonography and saline infusion sonography with endometrial biopsy in detection of endometrial pathology in women with postmenopausal bleeding. Researcher 2019;11(4):38-42]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 6. doi:10.7537/marsrsj110419.06.

 

Keywords: Postmenopausal bleeding - Transvaginal ultrasound – saline infusion sonography - Hysteroscopy.

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7

Comparison between Different Types of Intranasal Packing after Endoscopic Sinus Surgery

 

Prof. Dr. Ahmed Mahmoud Khalifa, Dr. Yahia Mohammed Dawood, Dr. Mohammed Ahmed El Sharkawy, Mostafa Fadl El Deeb

 

Otorhinolaryngology Department, Faculty of Medicine, Al Azhar University, Egypt.

drmostafaeldeeb1988@gmail.com

 

Abstract: Background: endoscopic sinus surgery (ESS) is the mainstay of surgical management for sinus pathology in the modern age. The most common reason for performing ESS is for chronic rhinosinusitis, with or without polyps. However, the extended applications of ESS include closure of CSF leaks, resection of sinonasal tumors, nasolacrimal duct surgery, orbital decompression, and a means of approach to the skull base and intracranial cavity. Aim of the Work: the aim of this study is to compare different types of nasal packing and non- packing after endoscopic sinus surgery. Patients and Methods: in this study, forty patients with sinus pathology presented to police hospital, Nasr city. Patients presented during the period from September 2016 to April 2018, seeking for management of their problem. (40) patients that had been diagnosed before as chronic rhino-sinusitis according to history, symptoms and examination (naked eye and endoscopic) were randomly divided into (4) equal groups: Group (A): 10 patients not packed (control group), Group (B): 10 patients packed with non absorbable tampon, Group (C): 10 patients packed with absorbable gel foam, Group (D): 10 patients packed with absorbable nasopore. Patients examined post-operatively for pain, bleeding, crustaion, and synechia. Results: no significant difference in subjective assessment of pain and headache, crustations and nasal blockage between absorbable nasal pack group and the unpacked one. Also no significant difference between endoscopic assessment of postoperative edema, nasal secretions and presence of granulation tissue in the middle meatus. Conclusion: the use of absorbable nasal pack after functional endoscopic sinus surgery resulted in less bleeding, less crustations, decreasing the incidence of lateralization of middle turbinate and adhesions on long term and better mucosal healing.

[Ahmed Mahmoud Khalifa, Yahia Mohammed Dawood, Mohammed Ahmed El Sharkawy, Mostafa Fadl El Deeb. Comparison between Different Types of Intranasal Packing after Endoscopic Sinus Surgery. Researcher 2019;11(4):43-47]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 7. doi:10.7537/marsrsj110419.07.

 

Keywords: Packing, Endoscopic, synechia, lateralization.

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8

Mycotoxins in Poultry Production

 

Zeinab M. S. Amin Girh1, Nagwa S. Rabie1 and Mona S. Zaki2

 

1Department of Poultry Diseases, National Research Centre, Dokki, Giza, Egypt.

2Hydrobiology Department, National Research Centre, Dokki, Giza Egypt.

drmonazaki@yahoo.com

 

Abstract: The occurrence of mycotoxins has become a problem to be discussed, due to its harmfulness to humans, animal’s health and consider an obstacle to the poultry economy. Mycotoxins are toxic metabolites produced by certain species of fungi and may contaminate food. The fungi can grow in incorrectly stored feeds especially which stored under unfavourable environmental conditions (high relative humidity and elevated temperature). Aflatoxins are mainly produced by Aspergillus flavus and Aspergillus parasiticus, and B1, B2, G1 and G2 are its best known types. Fumonisin, with its B1, B2 or B3 types, are produced by Fusarium, while ochratoxin A is produced by Penicillium and Aspergillus. The main trichothecenes mycotoxins are T-2 toxin, deoxynivalenol and diacetoxyscirpenol. Zearalenone, produced by different species of Fusarium fungi affects chickens only when they are exposed to extremely high levels of contamination. Generally, immunosuppression, hepatotoxicity and nephrotoxicity as a decrease in performance and production gains are the most observed effects. There are several laboratory methods that can be used for the determination of mycotoxins. In order to control the contamination, it is necessary to adopt proper farming practices which prevent fungi growth.

[Zeinab M. S. Amin Girh, Nagwa S. Rabie and Mona S. Zak. Mycotoxins in Poultry Production. Researcher 2019;11(4):48-52]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 8. doi:10.7537/marsrsj110419.08.

 

Keywords: Mycotoxins; Poultry; Production

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9

Nigerian Pseudo-Federalism and the Agitations for Restructuring

 

Dr. Frank O. Amugo

 

Department of Foundation Studies, School of Foundations and General Studies

Captain Elechi Amadi Polytechnic, Rumuola, P.M.B. 3659, Port Harcourt, Rivers State, Nigeria

frankamugo@yahoo.com

 

Abstract: Nigerian brand of Federalism has been described as ‘Pseudo Federalism’ as a result of the fact that its structure and workings negate the principles and tenets of true federalism as practiced by well established and successful democracies in other parts of the world, like United States of America, Australia, Canada, among others. In this effort, we shall examine the concept of federalism with particular reference to the instrument of fiscal federalism which is the bedrock of federal practice and principles. The study of Nigerian federalism has shown that the country since after the collapse of the first Republic has rather operated fiscal Centralism, which is the core tenet and bedrock of Unitary System of Government, making the Nigerian Federalism a ‘Pseudo Federalism’. It is alleged that fiscal centralism has been the instrument with which the Nigerian State, both military and civilian have used to appropriate resources of all the federating units especially the oil bearing communities through various dispossessional laws. This situation has led to the enduing agitations and restiveness for restructuring and resource control. The paper shall be concluded with our well conceived recommendations, for socio-economic and political development of the fledgling democracy in Nigeria.

[Amugo, F. O. Nigerian Pseudo-Federalism and the Agitations for Restructuring. Researcher 2019;11(4):53-58]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 9. doi:10.7537/marsrsj110419.09.

 

Keywords: Pseudo-Federalism, Fiscal Federalism, Fiscal Centralism, True Federalism, Restructuring

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10

Impact of Pencom Scheme on Civil Servants Productivity in Rivers State

 

Charles Ndubuisi Onyeche

 

Department Business Administration and Management, School of Business and Administrative Studies, Captain Elechi Amadi Polytechnic, Rumuola, Port Harcourt, Nigeria

charlesndubuisi62@gmail.com

 

Abstract: The study examined the impact of Pencom Scheme on civil servants’ productivity in Rivers State, Nigeria. The research design adopted was the survey approach through the use of structured questionnaire. The population of the study consisted of all the servants in Rivers State which is given as 2,794 employees. A sample of 350 staff selected from Rivers State civil servants in Port Harcourt was drawn for the study. The analysis was done through descriptive and inferential statistical tools. The findings among others revealed that majority of the respondents prefer to save outside any pension scheme while others do not know bow to calculate how much they need to save for retirement. The study also found that dependence on budgetary provisions, bribery and corruption, tedious payment procedures, poor staffing, poor record keeping, lack of adequate and timely budgetary provisions and increases in salaries constitute the key limitations to effective and efficient implementation of Contributory Pension Scheme (CPS) in Rivets State. It revealed that the main policy options open to government to ensure efficiency of the CPS in Rivers State included: Maintaining of discipline in pension administration and management, ensuring seamless funding of the retirement scheme, establishing a uniform set of rules, regulations and standards for the administration and payments of retirement benefits and improving the living standard of the elderly people through prompt payment of their retirement benefits. In conclusion, it is clear and evident in the study that: there is positive/significant relationship between the deductible-saving of worker’s salary and the efficiency of workers in Rivers State civil service and there is positive/significant relationship between the deductible- saving of workers’ salary and the efficiency in Rivers State civil service. Therefore, it is recommended that Pension Fund Administrators (PFAs) should be transparent and accountable in their dealings with their clients through regular update of their customers account status.

[Onyeche, C. N. Impact of Pencom Scheme on Civil Servants Productivity in Rivers State. Researcher 2019;11(4):59-70]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 10. doi:10.7537/marsrsj110419.10.

 

Keywords: Pencom Act Scheme, Civil Servants, Workers productivity, Workers.

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11

Biosynthesis Of Silver Nano-Particles From Plant Extract

 

Hardeep Singh

 

Lecturer in Biology, Govt. Senior Secondary School, Singowal in Jind, Haryana (India)

Email: hssonadil@gmail.com

 

Abstract: In recent science Nanotechnology is a burning field for the researchers. Nanotechnology deals with the Nanoparticles having a size of 1-100 nm in one dimension used significantly concerning medical chemistry, atomic physics, and all other known fields. Nanoparticles are used immensely due to its small size, orientation, physical properties, which are reportedly shown to change the performance of any other material which is in contact with these tiny particles. These particles can be prepared easily by different chemical, physical, and biological approaches. But the biological approach is the most emerging approach of preparation, because, this method is easier than the other methods, ecofriendly and less time consuming. The Green synthesis was done by using the aqueous solution of Ocimum tenuiflorum (Tulsi) leaf extract and AgNO3. Silver was of a particular interest for this process due to its evocative physical and chemical properties. A fixed ratio of plant extract to metal ion was prepared and the color change was observed which proved the formation of nanoparticles. The nanoparticles were characterized by UV-vis Spectrophotometer and its action on bacterial growth.

[Singh, H. Biosynthesis Of Silver Nano-Particles From Plant Extract. Researcher 2019;11(4):71-78]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 11. doi:10.7537/marsrsj110419.11.

 

Keywords: Silver, Nano-Particles, Plant, Spectrophotometers

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A Study on Man-Monkey Conflicts in Bir Bara Ban Conservation Reserve Forest in district Jind, Haryana (India)

 

Hardeep Singh

 

Lecturer in Biology, Govt. Senior Secondary School, Singowal in Jind, Haryana (India)

Email: hssonadil@gmail.com

 

Abstract: The present study was planned from October, 2018 to March, 2019. To study man-monkey Conflicts in Bir Bara Ban Conservation Reserve Forest in district Jind, Haryana (India), Direct contact methods and scan sampling method followed by Kumar, 2009; Kumar and Malhotra, 2014; Kumar, 2014. The sighted individuals of rhesus macaques and its troops conflicted with nearby inhibited human beings was photographed by Sony cybershot camera DCR-H-9 and Sony handy cam model DCR-HC-42E. During the present study, habitat destruction through illegal felling, less numbers of fruit trees and shifting of rhesus macaques for feeding in particular day, i.e., Tuesday and Friday as well as in particular season nearby agricultural areas, villages areas and Hanuman Mandir (a holy temple) were the major reasons for conflicts with man and his pets (domestic dog, Canis familiaris) in Bir Bara Ban Conservation Reserve Forest in district Jind, Haryana (India).

[Singh, H. A Study on Man-Monkey Conflicts in Bir Bara Ban Conservation Reserve Forest in district Jind, Haryana (India). Researcher 2019;11(4):79-83]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 12. doi:10.7537/marsrsj110419.12.

 

Keywords: Rhesus Monkey, Human Beings, Conflicts, Forest, Haryana

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13

Response of Early Sweet Grapevines to Foliar Spray Algae Extract and Selenium

 

Faissal F. Ahmed, Hamdy, I. Mahmoud, Sarah, M. Amin

 

Hort. Dept. Fac. of Agric. Minia Univ. Egypt.

Email: faissalfadel@yahoo.com

 

Abstract: This study was carried out during 2017 and 2018 seasons to examine the effect of spraying Algae extract at 0.05 to 0.2% and / or selenium at 125 to 500 ppm on all growth aspects, pigments and nutrients in the leaf, yield and berries quality of Early sweet grapevines grown in sandy soil. Berry setting, yield and both physical and chemical parameters of quality were remarkably improved due to using Algae extract at 0.05 to 0.2% and/ or selenium at 125 to 500 ppm compared to the control treatment. Nanoconsiderable effect was observed on the investigated characteristics due to increasing Algae extract concentrations from 0.1 to 0.2% and selenium from 250 to 500 ppm. The best results with regard to all growth aspects, pigments and nutrients in the leaf, yield and berries quality of Early sweet grapevines grown under sandy soil conditions were observed due to treating the vines three times with a mixture of Algae extract at 0.1% and selenium at 250 ppm.

[Faissal F. Ahmed, Hamdy, I. Mahmoud, Sarah, M. Amin. Response of Early Sweet Grapevines to Foliar Spray Algae Extract and Selenium. Researcher 2019;11(4):84-89]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 13. doi:10.7537/marsrsj110419.13.

 

Keywords: Algae, selenium, Early sweet, grapevines, berry setting, yield

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The manuscripts in this issue were presented as online first for peer-review starting from March 26, 2019. 

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