Journal of Soil and Water Sciences最新文献

{"title":"Evaluation of Potassium Status Using Thermodynamic Relationships in some Soils of Ismailia Governorate, Egypt","authors":"Mohamed Abdelbary, Ozoris Ali, Noha A. Mahgoub, E. M. Elsikhry","doi":"10.21608/jsws.2024.266709.1005","DOIUrl":"https://doi.org/10.21608/jsws.2024.266709.1005","url":null,"abstract":"","PeriodicalId":371783,"journal":{"name":"Journal of Soil and Water Sciences","volume":"201 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140468747","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":"Removal of Cd (II) and Pb (II) Ions from Aqueous Solutions Using Raw and Modified Activated Carbon","authors":"Magdy Ibrahim and Mai Rashwan","doi":"10.21608/jsws.2022.290564","DOIUrl":"https://doi.org/10.21608/jsws.2022.290564","url":null,"abstract":": The main objective of this study is to investigate the feasibility of using raw and modified activated carbon with ammonia for the maximum removal of Pb 2+ and Cd 2+ ions from aqueous solutions and polluted water samples at optimized process parameters such as initial metal concentration, adsorbent dose, contact time and solution pH. The treatment of a commercial granular activated carbon by ammonia was performed to increase the power of the heavy metal ions removal from aqueous samples. In this work, the adsorption of these ions on raw and modified activated carbon was studied using the batch equilibrium technique, and the equilibrium adsorption data was described by Langmuir isotherm models. In the current work, Pb 2+ and Cd 2+ ions were adsorbed out of aqueous solutions using raw and modified activated carbon as an adsorbent. Investigations have been done into the effects of solution pH, contact time, initial metal ion concentrations, and adsorbent dosage on removal efficiency. The pH studies demonstrated that Pb 2+ and Cd 2+ ion removal efficiency is pH-dependent, increasing with increasing pH value, peaking at pH 6.5, and then remaining nearly constant. Due to an increase in the number of adsorption sites, an increase in adsorbent mass causes an increase in Pb 2+ and Cd 2+ adsorption. According to the data, activated carbon has removal efficiency (96.0 - 98.0%) for removing Pb 2+ and Cd 2+ ions from aqueous solutions in the initial metal concentration range of 10 to 50 mg/l. The experimental data suited the Langmuir and Freundlich adsorption isotherms well, and their constants were assessed. The effectiveness of Pb 2+ ions removal by adsorption (starting Pb 2+ concentration ranging from 1 - 10 mg/l) is shown by the treatment results of various polluted water samples to be between (81.5 - 86.7%), between (91 - 98%), utilizing raw Activated carbon (R-AC) and modified activated carbon with ammonia (A-AC), respectively. the results for cadmium ions reveal that the effectiveness of Cd 2+ ions removal by adsorption (starting Cd 2+ concentration ranging from 1 to 10 mg/l) is ranged from (74.3 to 83.7%), and from (97.6 to 98.4%) when the raw activated carbon (R-AC) and modified activated carbon with ammonia (A-AC) are used, respectively.","PeriodicalId":371783,"journal":{"name":"Journal of Soil and Water Sciences","volume":"82 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114135731","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":"Influence of Incorporating Shredded Corn Stover on some Physicochemical Properties of the Soil and Corn Crop Production","authors":"Awad R.; G. M. ElMasry S. A. M. Abd El-Azeem","doi":"10.21608/jsws.2022.290562","DOIUrl":"https://doi.org/10.21608/jsws.2022.290562","url":null,"abstract":"","PeriodicalId":371783,"journal":{"name":"Journal of Soil and Water Sciences","volume":"209 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116487981","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":"Effects of Co-Inoculation of Rhizobium and Plant Growth-Promoting Rhizobacteria on Common Bean (Phaseolus vulgaris) Yield, Nodulation, Nutrient Uptake, and Microbial Activity under Field Conditions","authors":"Samy Abd El-Malik Mohamed Abd El-Azeem","doi":"10.21608/jsws.2022.290563","DOIUrl":"https://doi.org/10.21608/jsws.2022.290563","url":null,"abstract":"","PeriodicalId":371783,"journal":{"name":"Journal of Soil and Water Sciences","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121650242","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":"Impact of Water Seepage of New Suez Canal on Soil Properties of El-Amal Area, Ismailia East, Egypt","authors":"A. Elwan","doi":"10.21608/jsws.2021.262001","DOIUrl":"https://doi.org/10.21608/jsws.2021.262001","url":null,"abstract":": Seawater seepage poses a major problem for agriculture in Egypt’s coastal areas. In 2020, a 285 Faddan area in El-Amal, Ismailia East was selected as a representative soil model for Egypt’s New Suez Canal region to investigate the impact of seawater seepage on soil properties and identify the responsible factors for land degradation, with an emphasis on suitable adaptations to land limitations and climate stressors. Seawater changes the behavior of soil and creates geotechnical problems that enhance soil alkalinity and salinity value. Five soil mapping units (SMUs) were identified with moderately to shallow soils dominating, in a detailed soil survey that was conducted in the field to conduct pedomorphological and physicochemical investigations. The water table had raised by 50–100 cm within the soil pedons. Approximately 45.4 Faddans were recognized as sabkhas due to the inundation of lowlands with seawater. Most study lands (217.2 Faddan) were unsuitable for cultivation due to the higher limitations of salinity, alkalinity, soil structure, and poor drainage under saturation conditions. The salinity of saturated soil reached 29.60 dS/m, posing a major challenge to agriculture. The results indicated that the pedomorphological and physicochemical properties of most study soils had degraded and become unsuitable for cultivation, which was linked to the seawater seepage. It is predicted that the rest lands (SMU1 and SMU2) and other adjacent lands to the study area are expected to change into desertified lands in the future due to continuous seawater seepage. The New Suez Canal’s seawater seepage caused the cultivated fruit trees and other vegetation in the study area to dry up and die. Climate change-induced seawater seepage and drought were the direct causes of soil salinization in the study lands. To achieve long-term sustainability and avoid maladaptive outcomes, an urgent need to adopt an integrated approach for large-scale investments in Egypt’s farming sector is urgently needed for effective policymaking toward achieving food security, with it being recognized that climate change has adverse effects and challenges to the soil resources in Egypt, and therefore, the sustainable planning of natural resources in coastal areas should be further studied and thoroughly managed. Adopting local adaptation actions and strategies for incremental, systemic, and transformational changes at the farm and on large scales in the agricultural sector is critical. The transformational adaptation actions are the suitable practices, followed by incremental and systemic adaptations to combat the agricultural limitations and climate change stressors in the current study lands.","PeriodicalId":371783,"journal":{"name":"Journal of Soil and Water Sciences","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131693617","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":"Formation and Taxa of some Wadi Dahab Tributaries Soils, South Sinai, Egypt","authors":"A. Elwan","doi":"10.21608/jsws.2018.58715","DOIUrl":"https://doi.org/10.21608/jsws.2018.58715","url":null,"abstract":"Geological parent material is a soil forming factor which controls the particle size distribution (PSD), geochemical characterization, and mineralogical properties. In Wadi Dahab Basin at southeastern Sinai of Egypt, four main tributaries (Al-Ghaib, Zoghra, Abu-Khashab and Um-Ism) and their subtributaries, having different geological parent materials, were selected and mapped. Sixteen pedons containing 51 sediment samples across the slope gradient (1335-9 m) of Wadi Dahab Basin representing all its tributaries and subtributaries were exhaustively analysed for the purposes of: (1) detecting the lithologic discontinuities (LDs) through soil morphology and uniformity indices; (2) recognizing the weathering intensity using the geochemical data; (3) identifying the sediments provenance via heavy mineral distribution; and (4) classifying the soils up to family level. LDs in most pedons revealed sequences of deposition and erosion processes and the heterogeneity of the parent material. The vertical distribution of coarse fragments within a pedon is proposed as a morphologic indicator (as with other clay-free basis indices) to detect LDs in soils. The Fe2O3 and Al2O3 were relatively enriched at downslope positions while SiO2, MgO, K2O, and Na2O were strongly lost during sediment weathering and soil formation, with the exception of CaO that was highly affected by CaCO3 content. The heavy minerals characteristics suggest their mixed sources from sandstone, limestone, granites, and metamorphic rocks. The heavy minerals concentration and geochemical oxides in most studied pedons followed the LD set, indicating further approaches for detecting LDs. Pedons from upslope positions were immature sediments and classified as Entisols while pedons from the downslopes of Wadi Al-Ghaib, Wadi Zoghra, and Wadi Dahab's delta were submature sediments and classified as Aridisols. Furthermore, six families were identified across the study area. Indices based on PSD, geochemical, and mineralogical data were evaluated and further implications of the results were discussed in the text.","PeriodicalId":371783,"journal":{"name":"Journal of Soil and Water Sciences","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123320949","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":"Anthropogenic Impacts on Soils of Wadi Al-Molak, Suez Canal West, Egypt","authors":"A. Elwan","doi":"10.21608/jsws.2018.58714","DOIUrl":"https://doi.org/10.21608/jsws.2018.58714","url":null,"abstract":"The past three decades saw rapid and massive agriculture in Wadi Al-Molak at west of Suez Canal, Egypt. Land cover and pedon changes were studied in 850 km of the Wadi Al-Molak catena using time series and paired-site approach, respectively. The aim was to better understand the anthropogenic impacts responsible for the change of land cover and soil characteristics vertically within pedons and horizontally across landscapes under different ages of cultivation. Five landscapes were recognized: mountains and piedmont slope at upland; alluvial plain at midland; bajada plain and Nile old deltaic plain at lowland. The available Landsat images were analyzed from December 1986 to December 2016 of the Wadi to track the agrarian expansions in epochs (till 1986, 1987-1996, 1997-2006, and 20072016). Forty-three pedons were randomly distributed throughout the five landscapes representing both of cultivated soils under all periods and native soils. Detailed soil morphological as well as selected physical and chemical characteristics were studied. Soil morphology and taxonomy from five landscapes were used to interpret the anthropogenic impacts. Landscapes and soils were altered by conversion to agriculture for direct human use. Among out key findings are that (1) the agricultural areas increased from 225 km in 1986 to 475 km in 2016 while the annual expansion rate decelerated from 11.8 kmyr in 1996 to 2.2 kmyr in 2016; (2) the majority of agrarian expansions during 1987-2016 mainly occurred on alluvial plain landscape; (3) availability of irrigation water, soil potentialities, and national policies were the major driving forces; (4) solum horizons and redoximorphic/ped surface features occurred in cultivated soils and absent in native soils; (5) soil moisture regime was changed to anthraquic under sustained paddy cultivation, suggesting a modification in USDA Soil Taxonomy; (6) soil solum thickness increased with increasing time of cultivation; (7) formation of salic and natric horizons with high soil bulk density in lowland indicated soil degradation process as a result of mismanagement; (8) pedons under cultivation contained greater concentrations of organic carbon, total nitrogen, and clay than pedons under natural vegetation; and (9) the cultivated soils were classified as Aridisols or Vertisols while the native soils were classified as Entisols. The results demonstrated that agricultural expansion had changed the land cover, soil morphological, physical, and chemical properties, even the soil types. These results are very valuable for better understanding soil genesis and evolution with agricultural utilization.","PeriodicalId":371783,"journal":{"name":"Journal of Soil and Water Sciences","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124898336","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}