Pub Date : 2021-02-01DOI: 10.21608/jenvbs.2021.98355.1146
M. Seliem, Mohamed Elmahrouk, H. El-Ramady
{"title":"Application of Nanoparticles to Control Cuscuta spp. in Horticultural Orchards: A Short Communication","authors":"M. Seliem, Mohamed Elmahrouk, H. El-Ramady","doi":"10.21608/jenvbs.2021.98355.1146","DOIUrl":"https://doi.org/10.21608/jenvbs.2021.98355.1146","url":null,"abstract":"","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84192833","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}
Pub Date : 2021-01-31DOI: 10.21608/JENVBS.2021.55669.1125
H. El-Ramady, Abhishek Singh, V. Rajput, M. Amer, A. Omara, Tamer Elsakhawy, F. Elbehiry, Heba Elbasiouny, Neama Abdalla
Undoubtedly, COVID-19 pandemic is one of the most devastating pandemics in the recent era and major problem for sustainability of life. This virus has severely impacted both environmental and human health. Moreover, it has become the top priority among other challenging global issues including pollution, climate change, urbanization, and unsustainable consumption, which have led to major environmental disturbances and biodiversity loss. The COVID-19 may have long-lasting impacts on the environment health, biodiversity, and soil security, consequently, will raising several scientific questions to be investigated in near future including the expected environmental impacts of COVID-19 on soil, water and air, connecting the missing links between environmental pollutions and COVID-19. Most importantly, unraveling the role of soil in spreading or reducing transmission of the COVID-19 pandemic, and soil xenobiotics status under the COVID-19 outbreak. Understanding the projected management scenario of soil and freshwater pollution in the post-COVID-19 era and the potential impact of COVID-19 on food and soil security would be of immense aid in the preparation of future pandemics. This opinion article aims to analyze and foresee some of the major issues for meeting the United Nation’s Sustainable Development Goals.
{"title":"Environment, Biodiversity and Soil Security: A New Dimension in the Era of COVID-19","authors":"H. El-Ramady, Abhishek Singh, V. Rajput, M. Amer, A. Omara, Tamer Elsakhawy, F. Elbehiry, Heba Elbasiouny, Neama Abdalla","doi":"10.21608/JENVBS.2021.55669.1125","DOIUrl":"https://doi.org/10.21608/JENVBS.2021.55669.1125","url":null,"abstract":"Undoubtedly, COVID-19 pandemic is one of the most devastating pandemics in the recent era and major problem for sustainability of life. This virus has severely impacted both environmental and human health. Moreover, it has become the top priority among other challenging global issues including pollution, climate change, urbanization, and unsustainable consumption, which have led to major environmental disturbances and biodiversity loss. The COVID-19 may have long-lasting impacts on the environment health, biodiversity, and soil security, consequently, will raising several scientific questions to be investigated in near future including the expected environmental impacts of COVID-19 on soil, water and air, connecting the missing links between environmental pollutions and COVID-19. Most importantly, unraveling the role of soil in spreading or reducing transmission of the COVID-19 pandemic, and soil xenobiotics status under the COVID-19 outbreak. Understanding the projected management scenario of soil and freshwater pollution in the post-COVID-19 era and the potential impact of COVID-19 on food and soil security would be of immense aid in the preparation of future pandemics. This opinion article aims to analyze and foresee some of the major issues for meeting the United Nation’s Sustainable Development Goals.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84762746","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}
Pub Date : 2020-09-21DOI: 10.21608/jenvbs.2020.41196.1104
M. Hefzy, H. Mostafa, M. Zahran
{"title":"Onion drought tolerance enhancement in calcareous soils based on using bio-stimulants","authors":"M. Hefzy, H. Mostafa, M. Zahran","doi":"10.21608/jenvbs.2020.41196.1104","DOIUrl":"https://doi.org/10.21608/jenvbs.2020.41196.1104","url":null,"abstract":"","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"519 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77188922","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}
Pub Date : 2020-02-01DOI: 10.21608/jenvbs.2020.28824.1091
I. Abdelfattah, E. Attia, Ghada M. Elbanna
A pot experiment under greenhouse was conducted during 2017/18 and 2018/19 at Sakha Horticulture Research Station, North Nile Delta to find the impact of different irrigation scheduling on freesia-water productivity, its yield, vegetative, flowering, corms parameters and chlorophyll content. Therefore, four irrigation intervals of 3, 6, 9 and 12 days with four irrigation levels of 100 (Control), 120, 80, and 60% cumulated pan evaporation (CPE) were tested. Results showed that irrigation scheduling significantly influenced the stated items. The mean seasonal irrigation water for the highest economical yield of fresh weight of spike was 12.58 cm, while it was 14.05 cm for new corm under 9 days and 60% or 12 days and 80%, respectively with mean value of 13.32cm. Regarding irrigation water productivity (IWP), the stated irrigation scheduling gave the highest IWP for spike (0.7g.cm-1) and new corm of 0.43 g.cm-1. For freesia marketable yield of fresh weight of spike and new corm, maximum spike weight was obtained from 9 days and 60% and for fresh weight of new corm was obtained from 12 days and 80% CPE. By applying 12 days and 120% level, the highest values of plant height, number of leaves per plant and weight of fresh and dry vegetative growth were recorded. Whereas, 3 days and 120% level gave the highest leaf area. Moreover, watering each 9 days and 80% CPE is the effective irrigation scheduling on flowering parameters. Meanwhile, 12 days and 60% is the proper irrigation scheduling for highest total chlorophyll content.
于2017/18和2018/19年度在北尼罗河三角洲萨哈园艺研究站进行了温室盆栽试验，研究了不同灌溉时间对小苍兰水生产力、产量、营养、开花、球茎参数和叶绿素含量的影响。因此，试验采用灌水量为100(对照)、120、80和60%的4种灌水量，灌溉间隔为3、6、9和12 d。结果表明，灌溉调度对上述指标有显著影响。穗鲜重经济产量最高的季节平均灌溉水量为12.58 cm, 9天以内新穗鲜重经济产量为14.05 cm, 12天和80%经济产量平均灌溉水量分别为13.32cm。在灌溉水生产力(IWP)方面，该灌溉计划的穗部IWP最高，为0.7g.cm-1，新球茎IWP最高，为0.43 g.cm-1。小苍兰穗鲜重和新球果可售产量，穗鲜重在第9天达到最大值，为60%;新球果鲜重在第12天达到最大值，为80%。施用12 d，以120%水平处理，记录了单株株高、单株叶数和鲜、干营养生长质量的最高值。而3 d和120%水平的叶面积最高。每9 d灌水和80% CPE是影响开花参数的有效灌溉调度。总叶绿素含量最高的灌溉时间为12 d、60%。
{"title":"Irrigation scheduling and its impacts on Freesia-water productivity, vegetative and flowering parameters under greenhouse cultivation","authors":"I. Abdelfattah, E. Attia, Ghada M. Elbanna","doi":"10.21608/jenvbs.2020.28824.1091","DOIUrl":"https://doi.org/10.21608/jenvbs.2020.28824.1091","url":null,"abstract":"A pot experiment under greenhouse was conducted during 2017/18 and 2018/19 at Sakha Horticulture Research Station, North Nile Delta to find the impact of different irrigation scheduling on freesia-water productivity, its yield, vegetative, flowering, corms parameters and chlorophyll content. Therefore, four irrigation intervals of 3, 6, 9 and 12 days with four irrigation levels of 100 (Control), 120, 80, and 60% cumulated pan evaporation (CPE) were tested. Results showed that irrigation scheduling significantly influenced the stated items. The mean seasonal irrigation water for the highest economical yield of fresh weight of spike was 12.58 cm, while it was 14.05 cm for new corm under 9 days and 60% or 12 days and 80%, respectively with mean value of 13.32cm. Regarding irrigation water productivity (IWP), the stated irrigation scheduling gave the highest IWP for spike (0.7g.cm-1) and new corm of 0.43 g.cm-1. For freesia marketable yield of fresh weight of spike and new corm, maximum spike weight was obtained from 9 days and 60% and for fresh weight of new corm was obtained from 12 days and 80% CPE. By applying 12 days and 120% level, the highest values of plant height, number of leaves per plant and weight of fresh and dry vegetative growth were recorded. Whereas, 3 days and 120% level gave the highest leaf area. Moreover, watering each 9 days and 80% CPE is the effective irrigation scheduling on flowering parameters. Meanwhile, 12 days and 60% is the proper irrigation scheduling for highest total chlorophyll content.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74367093","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}
Pub Date : 2020-02-01DOI: 10.21608/jenvbs.2020.29403.1094
M. Bassouny, M. Abbas
Nile Delta aquifer is one of the largest aquifers worldwide that receives the agrochemical leachates from the surrounding environments. To assess the status of some trace-elements (As, Co Cd, Pb, Cu and Ni) in the North-East area of Egypt, well-water samples beside of surface, subsurface and deep-soil-samples were collected from 17 different locations to represent three environmental-pathways: the first one signifies areas relatively nearby Damietta-branch, while the third pathway stands for the arable lands nearby Ismaellia-canal. The second pathway is in-between these two pathways. Furthermore, a reference soil (irrigated with fresh-Nile-water) was sampled for data comparison. These samples were estimated for their total and AB-DTPA-extractable contents of the aforementioned trace elements (TEs). Results revealed that AB-DTPA-extractable-TEs were in dynamic equilibrium with the corresponding soluble contents in irrigation water. Likewise, AB-DTPA-extractable-TEs significantly correlated with their corresponding total contents in soil. Concentrations of TEs in surface-soil-layer were higher than the corresponding ones in the subsurface and deep-soil-layers. The calculated values of contamination factor indicated moderate to very high levels of soil contamination with TEs. According to principal component analysis, total and AB-DTPA-extractable-TEs in soil were affected by only one-principal-component, recording 86.13 % of the data variance. This indicates that these contaminants originated probably from the same source. Moreover, multivariate-analyses revealed that total TEs significantly and positively correlated with soil hydraulic conductivity and bulk density, while negatively correlated with exchangeable sodium percentage, clay and organic matter contents. These results indicate that the groundwater flow is the potential source that enriched soils with TEs.
{"title":"Monitoring Environmental Pathways of Trace Elements in the Northern East Area of Egypt","authors":"M. Bassouny, M. Abbas","doi":"10.21608/jenvbs.2020.29403.1094","DOIUrl":"https://doi.org/10.21608/jenvbs.2020.29403.1094","url":null,"abstract":"Nile Delta aquifer is one of the largest aquifers worldwide that receives the agrochemical leachates from the surrounding environments. To assess the status of some trace-elements (As, Co Cd, Pb, Cu and Ni) in the North-East area of Egypt, well-water samples beside of surface, subsurface and deep-soil-samples were collected from 17 different locations to represent three environmental-pathways: the first one signifies areas relatively nearby Damietta-branch, while the third pathway stands for the arable lands nearby Ismaellia-canal. The second pathway is in-between these two pathways. Furthermore, a reference soil (irrigated with fresh-Nile-water) was sampled for data comparison. These samples were estimated for their total and AB-DTPA-extractable contents of the aforementioned trace elements (TEs). Results revealed that AB-DTPA-extractable-TEs were in dynamic equilibrium with the corresponding soluble contents in irrigation water. Likewise, AB-DTPA-extractable-TEs significantly correlated with their corresponding total contents in soil. Concentrations of TEs in surface-soil-layer were higher than the corresponding ones in the subsurface and deep-soil-layers. The calculated values of contamination factor indicated moderate to very high levels of soil contamination with TEs. According to principal component analysis, total and AB-DTPA-extractable-TEs in soil were affected by only one-principal-component, recording 86.13 % of the data variance. This indicates that these contaminants originated probably from the same source. Moreover, multivariate-analyses revealed that total TEs significantly and positively correlated with soil hydraulic conductivity and bulk density, while negatively correlated with exchangeable sodium percentage, clay and organic matter contents. These results indicate that the groundwater flow is the potential source that enriched soils with TEs.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78155761","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}
Pub Date : 2020-02-01DOI: 10.21608/jenvbs.2020.21970.1080
H. El-Ramady, M. Olle, B. Eichler-Löbermann, E. Schnug
Plant nutrition is considered one of the most important plant sciences dealing with plant productivity and hence has a great role in global food security. The proper nutrition of cultivated plants in its time, source, amount, and place is the guarantee for this satisfied production. Therefore, the science of plant nutrition is an increasingly important area in plant sciences, which has direct and indirect link with human health. The concept of plant nutrition has been changed from investigation of the application, translocation and metabolism of nutrients by plants into the "engineering" of these applied nutrients for human health. So, it has been established that "feed the soil to feed the human". Thus, recent developments in the field of plant nutrition have led to a renewed interest in the relationship between plant nutrition and human health. Therefore, this is an introduction to highlight on the new book series "Sustainable Plant Nutrition under a Changing World", which will be published by Springer Nature. This book series will focus on advance issues in plant nutrition under stressful environments starting with the changing in global climate and reaching to the production of cultivated crops biofortified with desirable nutrients like iodine, and selenium.
{"title":"Towards a New Concept of Sustainable Plant Nutrition","authors":"H. El-Ramady, M. Olle, B. Eichler-Löbermann, E. Schnug","doi":"10.21608/jenvbs.2020.21970.1080","DOIUrl":"https://doi.org/10.21608/jenvbs.2020.21970.1080","url":null,"abstract":"Plant nutrition is considered one of the most important plant sciences dealing with plant productivity and hence has a great role in global food security. The proper nutrition of cultivated plants in its time, source, amount, and place is the guarantee for this satisfied production. Therefore, the science of plant nutrition is an increasingly important area in plant sciences, which has direct and indirect link with human health. The concept of plant nutrition has been changed from investigation of the application, translocation and metabolism of nutrients by plants into the \"engineering\" of these applied nutrients for human health. So, it has been established that \"feed the soil to feed the human\". Thus, recent developments in the field of plant nutrition have led to a renewed interest in the relationship between plant nutrition and human health. Therefore, this is an introduction to highlight on the new book series \"Sustainable Plant Nutrition under a Changing World\", which will be published by Springer Nature. This book series will focus on advance issues in plant nutrition under stressful environments starting with the changing in global climate and reaching to the production of cultivated crops biofortified with desirable nutrients like iodine, and selenium.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72998280","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}
Pub Date : 2019-02-01DOI: 10.21608/jenvbs.2019.13580.1062
I. El-Akhdar, M. El-sheekh, N. Allam, F. Kamal, R. Abou-Shanab, C. Staehelin
Wheat (Triticum aestivum-L.) is one of the main winter cereal crops in Egypt for grain production and straw. The combined use of mineral fertilizer and bio fertilizer is required so; wheat plants were inoculated with Azospirillum lipoferum strains and/or Anabaena oryza to evaluate plant growth parameters and productivity under salt affected soils. Salt-tolerant A. lipoferum isolates (A10 and A11) have been isolated and identified by 16S rRNA sequencing. Wheat grains were inoculated with A. lipoferum strains and/or A. oryza. Inoculation with A. lipoferum and/or A. oryza increased root length compared with un-inoculated grains. Wheat plants inoculated with bacterial species grown in pots and soil experiments which had different salinity levels that arranged from normal (2.4 dSm-1) to salty (6.9 and 11.4 dSm-1) soils. The activity of enzymes urease and phosphatase in the wheat rhizosphere were determined. A. lipoferum species had the variable microbial count at different salinity levels. In addition, salinity had deleterious effects on the dry weight of plants, the number and dry weight of branches, spikes and grains, total chlorophyll, nitrogen and potassium concentrations. Furthermore, Na% was increased in shoot and grains of wheat plants. Reashiry, inoculation with nitrogen fixed A. lipoferum strains and/or A. oryza enhanced these parameters. Thus, inoculation with the salt-tolerant A. lipoferum strains (A10 and/or A11) and/or A. oryza reduced the deleterious effect of salt stress on wheat plants and enhanced productivity as compared to un-inoculated plants which fertilized with full dose traditional mineral nitrogen.
{"title":"Potential use of microbial inocula for improving wheat productivity in salty soils.","authors":"I. El-Akhdar, M. El-sheekh, N. Allam, F. Kamal, R. Abou-Shanab, C. Staehelin","doi":"10.21608/jenvbs.2019.13580.1062","DOIUrl":"https://doi.org/10.21608/jenvbs.2019.13580.1062","url":null,"abstract":"Wheat (Triticum aestivum-L.) is one of the main winter cereal crops in Egypt for grain production and straw. The combined use of mineral fertilizer and bio fertilizer is required so; wheat plants were inoculated with Azospirillum lipoferum strains and/or Anabaena oryza to evaluate plant growth parameters and productivity under salt affected soils. Salt-tolerant A. lipoferum isolates (A10 and A11) have been isolated and identified by 16S rRNA sequencing. Wheat grains were inoculated with A. lipoferum strains and/or A. oryza. Inoculation with A. lipoferum and/or A. oryza increased root length compared with un-inoculated grains. Wheat plants inoculated with bacterial species grown in pots and soil experiments which had different salinity levels that arranged from normal (2.4 dSm-1) to salty (6.9 and 11.4 dSm-1) soils. The activity of enzymes urease and phosphatase in the wheat rhizosphere were determined. A. lipoferum species had the variable microbial count at different salinity levels. In addition, salinity had deleterious effects on the dry weight of plants, the number and dry weight of branches, spikes and grains, total chlorophyll, nitrogen and potassium concentrations. Furthermore, Na% was increased in shoot and grains of wheat plants. Reashiry, inoculation with nitrogen fixed A. lipoferum strains and/or A. oryza enhanced these parameters. Thus, inoculation with the salt-tolerant A. lipoferum strains (A10 and/or A11) and/or A. oryza reduced the deleterious effect of salt stress on wheat plants and enhanced productivity as compared to un-inoculated plants which fertilized with full dose traditional mineral nitrogen.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83245404","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}
Pub Date : 2019-02-01DOI: 10.21608/jenvbs.2019.16428.1069
I. El-Akhdar, M. El-sheekh, N. Allam, F. Kamal, R. Abou-Shanab, C. Staehelin
Eighteen isolates of Azospirillum were collected from different sites at Kafrelsheikh Governorate. The isolates were cultivated on nitrogen-free malate (NFM) medium supplemented with different NaCl gl-1 concentrations (Zero, 0.7 and 1.5%) and tryptophan to study the salt tolerant in vitro and indol acetic acid production. Pots were used to evaluate the most salt-tolerant and efficient species and soils of this experiment had artificially salinized with different salinity levels. The most salt-tolerant A10 and A11 species were genetically identified by 16S rRNA sequencing and the results revealed to be closest matched at 99% A. lipoferum strains and selected to inoculate wheat plants. The investigated A. lipoferum species had variable divergence growth at different salinity levels. Actually, increased salinity had deleterious effect on IAA production. In addition, salinity had deleterious effect on dry weights of plants, number and dry weight of branches, total chlorophyll, sodium and potassium% with increasing salinity levels. But, inoculation with associative nitrogen fixation A. lipoferum isolates enhanced the previous parameters. Thus, inoculation with the salt-tolerant A.lipoferum isolates decreased the deleterious effect of salt stress on wheat plants.
{"title":"Evaluation of salt-tolerant Azospirillum spp and its role in improvement of wheat growth parameter","authors":"I. El-Akhdar, M. El-sheekh, N. Allam, F. Kamal, R. Abou-Shanab, C. Staehelin","doi":"10.21608/jenvbs.2019.16428.1069","DOIUrl":"https://doi.org/10.21608/jenvbs.2019.16428.1069","url":null,"abstract":"Eighteen isolates of Azospirillum were collected from different sites at Kafrelsheikh Governorate. The isolates were cultivated on nitrogen-free malate (NFM) medium supplemented with different NaCl gl-1 concentrations (Zero, 0.7 and 1.5%) and tryptophan to study the salt tolerant in vitro and indol acetic acid production. Pots were used to evaluate the most salt-tolerant and efficient species and soils of this experiment had artificially salinized with different salinity levels. The most salt-tolerant A10 and A11 species were genetically identified by 16S rRNA sequencing and the results revealed to be closest matched at 99% A. lipoferum strains and selected to inoculate wheat plants. The investigated A. lipoferum species had variable divergence growth at different salinity levels. Actually, increased salinity had deleterious effect on IAA production. In addition, salinity had deleterious effect on dry weights of plants, number and dry weight of branches, total chlorophyll, sodium and potassium% with increasing salinity levels. But, inoculation with associative nitrogen fixation A. lipoferum isolates enhanced the previous parameters. Thus, inoculation with the salt-tolerant A.lipoferum isolates decreased the deleterious effect of salt stress on wheat plants.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74647998","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}
Pub Date : 2019-02-01DOI: 10.21608/jenvbs.2020.20144.1075
Nahla I. H. El-Feky, T. Essa, A. Elzaawely, H. El-Zahaby
Eight isolates of bioagents (fungal and bacterial), obtained from the rhizosphere of healthy pepper plants collected from various pepper-growing sites in Kafr El-Sheikh governorate, were tested against pepper root-rot pathogens including Pythium aphanidermatum, Fusarium solani, F. oxysporum, F. moniliformis and Macrophomina phaseolina. In in vitro study, the fungal bioagents (Trichoderma viride (TV1 and TV2) and T. harzianum (TH1 and TH2) exhibited the maximum antifungal activity against the five phytopathogens compared to the bacterial bioagents (Pseudomonas fluorescens (P1 and P2) and Bacillus subtilis (B1 and B2). In pots experiment, TV1 and P2 bioagents caused the least disease severity among all treatments. All bioagents were effective with different degrees specially Trichoderma spp. to promote the growth parameters of pepper plants and manage root rot disease that caused by different pathogens. Furthermore, they had equal efficacy with fungicide treatment under in vitro and in pots experiment. Thus, application of biological methods in plant disease control is an effective alternative technique and could have a potential biofertilizer effect, since they stimulated the growth of pepper plants.
{"title":"Antagonistic activity of some bioagents against root rot diseases of pepper (Capsicum annum L.)","authors":"Nahla I. H. El-Feky, T. Essa, A. Elzaawely, H. El-Zahaby","doi":"10.21608/jenvbs.2020.20144.1075","DOIUrl":"https://doi.org/10.21608/jenvbs.2020.20144.1075","url":null,"abstract":"Eight isolates of bioagents (fungal and bacterial), obtained from the rhizosphere of healthy pepper plants collected from various pepper-growing sites in Kafr El-Sheikh governorate, were tested against pepper root-rot pathogens including Pythium aphanidermatum, Fusarium solani, F. oxysporum, F. moniliformis and Macrophomina phaseolina. In in vitro study, the fungal bioagents (Trichoderma viride (TV1 and TV2) and T. harzianum (TH1 and TH2) exhibited the maximum antifungal activity against the five phytopathogens compared to the bacterial bioagents (Pseudomonas fluorescens (P1 and P2) and Bacillus subtilis (B1 and B2). In pots experiment, TV1 and P2 bioagents caused the least disease severity among all treatments. All bioagents were effective with different degrees specially Trichoderma spp. to promote the growth parameters of pepper plants and manage root rot disease that caused by different pathogens. Furthermore, they had equal efficacy with fungicide treatment under in vitro and in pots experiment. Thus, application of biological methods in plant disease control is an effective alternative technique and could have a potential biofertilizer effect, since they stimulated the growth of pepper plants.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85229470","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}
Pub Date : 2019-02-01DOI: 10.21608/JENVBS.2019.11428.1057
S. A. Abdallah, H. El-Ramady, Abdelhakeem E. El-Sherbeni, H. Anber, E. Keshk, Sobhy Hamed, H. Amine
Egypt suffers from the scarcity of water resources. The problem has been exacerbated by the steady increase in population density and the establishment of the Grand Ethiopian Renaissance Dam. Therefore, preserving the availability and quality of this resource is enormously important. Water quality is affected by a number of factors related to the characteristics of the watercourse and surrounding environment, like soil type, agricultural and industrial activity in the studied regions. Therefore, a comparative study was conducted on water samples collected from eight different locations at west and middle Delta regions from Beheira and Gharbia governorates. The obtained results showed that there are significant differences among the means of sample collection sites and dates, as well as the interaction between studied variables in all studied parameters. Although, most physical and chemical parameters were within standards limits except turbidity and chemical oxygen demand (COD). However, the average values of turbidity, color and pH were convergent in both governorates. While total dissolved salts (TSS) had a higher value (42.2 mg L-1) in the Beheira governorate. In the case of, the remaining studied parameters, the values recorded in Gharbia gov. were higher than the corresponding values recorded in Beheira gov. including COD and UV245 absorbance, which are associated with organic pollution. Thus, physical and chemical approaches can be used to evaluate the water quality in relevant locations. Further studies based on biological approaches should be also carried out.
{"title":"Monitoring Water Quality of some Canals in Delta Region, Egypt","authors":"S. A. Abdallah, H. El-Ramady, Abdelhakeem E. El-Sherbeni, H. Anber, E. Keshk, Sobhy Hamed, H. Amine","doi":"10.21608/JENVBS.2019.11428.1057","DOIUrl":"https://doi.org/10.21608/JENVBS.2019.11428.1057","url":null,"abstract":"Egypt suffers from the scarcity of water resources. The problem has been exacerbated by the steady increase in population density and the establishment of the Grand Ethiopian Renaissance Dam. Therefore, preserving the availability and quality of this resource is enormously important. Water quality is affected by a number of factors related to the characteristics of the watercourse and surrounding environment, like soil type, agricultural and industrial activity in the studied regions. Therefore, a comparative study was conducted on water samples collected from eight different locations at west and middle Delta regions from Beheira and Gharbia governorates. The obtained results showed that there are significant differences among the means of sample collection sites and dates, as well as the interaction between studied variables in all studied parameters. Although, most physical and chemical parameters were within standards limits except turbidity and chemical oxygen demand (COD). However, the average values of turbidity, color and pH were convergent in both governorates. While total dissolved salts (TSS) had a higher value (42.2 mg L-1) in the Beheira governorate. In the case of, the remaining studied parameters, the values recorded in Gharbia gov. were higher than the corresponding values recorded in Beheira gov. including COD and UV245 absorbance, which are associated with organic pollution. Thus, physical and chemical approaches can be used to evaluate the water quality in relevant locations. Further studies based on biological approaches should be also carried out.","PeriodicalId":11727,"journal":{"name":"Environment, Biodiversity and Soil Security","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77285162","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}
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