@article { author = {Samie, Ihab and Abbas, Mohamed and El-Ghozoli, Ahmed}, title = {Implications of Humic, Fulvic and K-Humate Extracted from each of Compost and Biogas Manures as well as their Teas on Faba Bean Plants Grown on a Typic Torripsamment soil and Emissions of Soil CO2}, journal = {Egyptian Journal of Soil Science}, volume = {58}, number = {3}, pages = {275-289}, year = {2018}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2018.3386.1168}, abstract = {The current study assumed that foliar application of organic extracts might be as beneficial in improving plant growth as amending soils with organic amendments. Moreover,the foliar application of these extracts can minimize, to some extent, the emissions of CO2 which is an obligatory option to attain desirable environmental conditions. To investigate this assumption, (1) different organic extracts i.e. humic acid, fulvic acid and K-humate prepared from each of a biogas manure and a mature compost (consisting of composted rice straw and farmyard manure) and (2) a tea of each of the aforementioned manures (TEA) prepared by soaking the latter organic materials in distilled water, were studied for their effects on dry matter yield of faba bean plants grown on a Typic Torripsamment soil sampled from Meet Kenana village, Qalubia, Egypt under greenhouse conditions. Each of these extracts and TEAs was applied either solely or in different combinations with each other, foliarly or through soil applications, at two different rates i.e. 48 and 96 L ha-1. Results revealed that the applications of the investigated organic extracts as well as the compost/biogas tea increased significantly NPK uptake by the grown plants and consequently improved the dry matter yield of faba bean plants especially with increasing the rate of the applied organic extract or tea. Mixed type extracts seemed to be more efficient in this concern than the single type extracts. It seemed preferable to use the single type extracts foliarly; whereas, the mixed type ones seemed more preferably to be used through soil applications. Results also revealed that the investigated organic amendments stimulated both the number and dry weights of nodules with significant effects on reducing the emissions of CO2 especially when added as foliar applications. In conclusion, the foliar application of the liquid organic amendments (as extracts or teas) is recommended to improve the plant growth on one hand, and decrease the emissions of CO2 on the other hand to attain more desirable environmental conditions.}, keywords = {organic extracts,tea biogas/compost,foliar application,soil application,carbon dioxide emissions,bacterial nodules}, url = {https://ejss.journals.ekb.eg/article_7774.html}, eprint = {https://ejss.journals.ekb.eg/article_7774_1154155e22281b6780f0fbba0b1f5d31.pdf} } @article { author = {Hamad, Mohamed and Tantawy, Manal}, title = {Effect of Different Humic Acids Sources on The Plant Growth, Calcium and Iron Utilization by Sorghum}, journal = {Egyptian Journal of Soil Science}, volume = {58}, number = {3}, pages = {291-307}, year = {2018}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2018.3559.1173}, abstract = {Humic acids are widely used in agriculture system for high quality plant production, but are these different source acids equally efficient. So, a pot experiment was carried out during two successive seasons (2016 and 2017) to study the effect of both individual and combined applications of different three sources of humic acids and either of Ca or Fe on growth and Ca and Fe utilization of sorghum plants (Sorghum Vulgare Var Saccharatum), under sandy culture condition. Used three humic acids isolated from different sources, i.e., clayey soil (HAS); podrite (HAP) and compost (HAC). Each HA was applied at rates of 0, 25, 50, 75 and 100 mg kg-1 refined sand. Either of Ca or Fe was added as acetate form (CH3COO) at rates of 0, 25, 50 and 100 mg kg-1 refined sand. The experimental design was a split-split plot design with three replicates. Results showed that, applications of each three HA individually and in combination with Ca or Fe were associated by a significant increases of dry weights of shoots and roots of sorghum plants. The highest dry weights were found in the plants treated by HAC followed by those associated the treatments of HAP. So according the calculated RI (%) values for the mean treatments of different added Ca rates, the estimated dry matter yields of shoots and roots may be arranged as follows: HAC (137.02 and 179.08 %) > HAP (98.84 and 143.02 %) > HAS (98.04 and 84.31 %) respectively. While, thesis order with different added Fe rates were HAC (114.35 and 217.88 %) > HAP (108.82 and 148.23 %) > HAS (101.06 and 76.99 %) for shoots and roots dry matter yields, respectively. In addition, increasing application rates of HA and Ca or Fe were associated by an increases of Ca and Fe uptake by both shoots and roots. The found order of the used HA on the increase of Ca and Fe uptake by shoots and roots of sorghum plants was: HAC > HAP > HAS. Moreover, the uptake of Ca and Fe by shoots was higher than that uptake by roots. On the other hand, increasing application rates of Ca and Fe decreased their utilization rate by sorghum plants. While, increasing application rates of HA were associated by an increase in the utilization rate of Ca and Fe by sorghum plants. Based on the obtained data, may be concluded that the fertilization program of sorghum plants must be include applications of HA especially HAC with Ca and Fe to obtained high quantity and quality of sorghum plants. Also, organic amendments must be used to increase Ca and Fe fertilizers efficiency.}, keywords = {Humic acids,calcium,iron,Nutrients uptake and utilization rate and Sorghum vulgare plants}, url = {https://ejss.journals.ekb.eg/article_9612.html}, eprint = {https://ejss.journals.ekb.eg/article_9612_df2ee372f2c60eed3eb84718d33c5b0b.pdf} } @article { author = {Mohamed, El sayed and Gouda, Mohamed}, title = {Assessment of Agricultural Sustainability in Some Areas West of Nile Delta}, journal = {Egyptian Journal of Soil Science}, volume = {58}, number = {3}, pages = {309-323}, year = {2018}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2018.3727.1176}, abstract = {Sustainable agriculture aims at improving the production besides the conservation of natural resources. Egypt has a lot of sustainability obstacles that faced agricultural development; some of them belong to soil characteristics such soil salinity, soil type and others belongs to environmental hazards and socio economic factors. The present study focuses on assessing sustainable agricultural status in west of Nile delta by integration of physical, social and economic factors using GIS. The present study focused on five pillars for evaluating sustainability levels for agricultural development under Egyptian conditions; soil productivity, security, protection, social acceptability and economic feasibility in the different mapping units. The results showed that, the study area is classified into three classes: II, III, and IV where, it’s occupied an area about 11.22, 64.92, and 12.08 % respectively. The results illustrate the current state of agricultural sustainability where, the values of sustainability varying between 0.1 and 0.36. About 48 percent of the total study area is characterized by a very low degree of sustainability < 0.1 as it classified as IV. This study proposed some recommendations to improve the current status of sustainable development such as increase the number of markets, schools and health care, loan facilitation, and educate farmers on modern methods of good management. The proposed recommendations will be improved the sustainability degree by 10% of the study area.}, keywords = {Sustainable agriculture,West of Nil Delta,Remote Sensing,GIS}, url = {https://ejss.journals.ekb.eg/article_13487.html}, eprint = {https://ejss.journals.ekb.eg/article_13487_a81ec9dad08dff23d590ed5c7558db0b.pdf} } @article { author = {Saad Moghanm, Farahat and Belal, Abdel-Aziz}, title = {Assessment and Mapping of Environmentally Sensitive Areas to Desertification Using New Techniques in The North Delta Region of Egypt}, journal = {Egyptian Journal of Soil Science}, volume = {58}, number = {3}, pages = {325-335}, year = {2018}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2018.4155.1181}, abstract = {This study aims to delineate areas in the northern Nile Delta of Egypt that are sensitive to desertification using integrated remote sensing and geographic information systems (GIS).Desertification is one of the fundamental problems associated with land degradation in arid and semi-arid regions. Desertification results from several factors, including climate change, chemical and physical degradation and human activities.Thematic indicators of soil, climate, vegetation, and management practices represent essential data and are required to approximately define the environmentally sensitive areas (ESAs). These layers are extracted and manipulated from topographic maps, geologic maps, land use intensity data, policy enforcement data, satellite images collected by the Enhanced Thematic Mapper Plus (ETM+) sensor in 2015, and data obtained during field surveys. The functions of the Spatial Analyst Toolbox in the ArcGIS 10.1 software package are used to collect the thematic layers and identify the ESAs.The data obtained in this study reveal that the areas that may be sensitive to desertification are located in the northern parts of the study area. These vulnerable areas are located around Lake Borollos and represent 19% of the study area. The results indicate that the central part of the study area exhibits fragile areas that are sensitive to desertification and represent 24% of the total area. The southern parts of the study area are characterized by critical sensitivity and represent 57% of the total area. The key factors that affect the sensitivity to desertification are soil salinity, waterlogging and management indicators in the study area.}, keywords = {Remote Sensing,GIS,environment,Environmental sensitivity,Desertification}, url = {https://ejss.journals.ekb.eg/article_13488.html}, eprint = {https://ejss.journals.ekb.eg/article_13488_51fb511827a4e1cc7ea6ff19f911b481.pdf} } @article { author = {Abbas, Mohamed and Bassouny, Mohamed}, title = {Implications of Long-Term Irrigation with Wastewater on The Contents and Retention Kinetics of Potentially Toxic Elements in Typic Torripsamment Soils}, journal = {Egyptian Journal of Soil Science}, volume = {58}, number = {3}, pages = {337-357}, year = {2018}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2018.4232.1183}, abstract = {The consequences of irrigation with wastewater (rich in organic matter) on the distribution of PTEs between the soluble and total forms as well as their distribution among the different soil layers of El-Gabal El-Asfar soils was the main target of this work. Eight soil locations were sampled at three different depths to represent different periods of irrigation with wastewater extended beyond 80 years. These samples were analyzed for their contents of SOM, cation exchange capacity (CEC), total and soluble concentrations of PTEs i.e. Ni, Pb, Cd, Co, Zn and Cu. Results revealed that both SOM and CEC increased steadily and significantly in the uppermost 0-30 cm layer with ageing. The corresponding increases within the subsequent soil depths seemed to be slight. Soluble and total concentrations of PTEs also increased progressively within the different soil depths with ageing; however, the depthwise increases seemed less obvious. Based on the Dutch system formula, the soil irrigated for a period extended up to 80 years could be considered slightly polluted with Co, moderately polluted with Pb, severely polluted with Ni, Cu and Zn and very severely polluted with Cd. Soluble PTEs concentrations were correlated significantly with their total concentrations in soil and both were correlated significantly with SOM and CEC. The relationships between amounts of retained PTEs and their corresponding soluble concentrations were best fitted to Langmuir isotherm model. The outcome relations between the amounts of retained PTEs and aging were fitted to five kinetic models, the power function and the parabolic diffusion ones seemed to be the best fitting models. In conclusion, although soil organic matter plays important role in distribution of the PTEs between the soluble and retained forms in soil irrigated with wastewater; yet ageing affects this distribution obviously especially in the uppermost soil layer.}, keywords = {Retention kinetics,El-Gabal El-Asfar,adsorption isotherms,Soil organic matter, Soil layers}, url = {https://ejss.journals.ekb.eg/article_10566.html}, eprint = {https://ejss.journals.ekb.eg/article_10566_db48ca70f69c73ee8f6011f2f55222e9.pdf} } @article { author = {Abowaly, Mohamed and Saad Moghanm, Farahat and EL-Nahry, Alaa EL-Dien and Shalaby, Adel and Khedr, Hossam}, title = {Assessment of Land Use Changes and Its Impact on Agricultural Soils in the North Nile Delta Region of Egypt Using GIS and Remote Sensing}, journal = {Egyptian Journal of Soil Science}, volume = {58}, number = {3}, pages = {359-372}, year = {2018}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2018.4833.1196}, abstract = {Egypt Nile Delta has very limited area of fertile soils which threatening by urban sprawl. Assessment of theurban areastretch effect on agricultural lands of the Egyptian Northern Nile Delta has been detected by using Landsat TM,Landsat ETM+and Landsat OLIsatellite images (1984, 2002, and 2016 respectively).Monitoring of urban sprawl was applied by visual interpretation viasupervised classification, on-screen digitizing and post classification change detection technique.The urban thematic layerand the land capability map using GISmade it possible to highlight the hazards of urban growth on the soils that have high capability. The obtained results showed that theoverallincrease of urban area amounted to 28 Km2.(210% of the urban area) during the study from1984 to 2016. The urban areagrowththroughout the 1984 – 2016 was on the expense of the soils that have good capability with amount of 18 km2(4 % of the good capability soil area).While the soils with fair capability lost 9 km2had 4 % of the fair capability soil area.The urban area growth over the noncapable soils (barren land) was very large during the 1984 and 2002period, where it has been amounted to 11 km2 was converted to urban. The urban sprawlpattern has been changed during the period from 2002 to 2016, where very partial area amounted to(1km2) of the noncapablesoils(barren land) was changed to urbanarea.It could be summarized that the urban sprawl represents one of themainsoil loss and degradation processesin theNile delta.}, keywords = {Keywords: Urban sprawl,Land cover and land use changes,GIS,Remote Sensing}, url = {https://ejss.journals.ekb.eg/article_19713.html}, eprint = {https://ejss.journals.ekb.eg/article_19713_3740ad6af17d607c9890b0533756cde2.pdf} } @article { author = {Mahmoud, Ghada and Hefzy, Mohamed}, title = {Microbial Gibberellins Impact on Zea mays (L.) Plants under Different Levels of Water Salinity}, journal = {Egyptian Journal of Soil Science}, volume = {58}, number = {3}, pages = {373-382}, year = {2018}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2018.5229.1207}, abstract = {These days green advancements of phytohormones have a critical place in industrial food process displace the chemical manufacturing which causes genuine dangers by gathered in the environment, from these hormones; gibberellin has an industrial significance as it's a plant development controller hormone. Fungi produced several important substances with biological impact; from these substance plant hormones production involves great interest in agriculture. From different fungal isolates tested for gibberellins production, Fusarium oxysporum represented as a hopefulfungus for microbial gibberellin generation conducted 268.9±6.27 mg/l gibberellic acid with productivity rate 38.42 mg/l/day with succeeded capacity to apply in the field. In vivo application of microbial gibberellic acid occurred in pot experiment on Zea mays (L.) plants under salinity stress. Synergetic development in maize plants exhibited with expanding microbial gibberellin concentrations until 150 ppm under water salinity stress and then no huge diverse was cleared.Increasing in plant weight and height observed in compared to the non-treated plants.}, keywords = {Phytohormones,Fusarium,fungi,salinity stress}, url = {https://ejss.journals.ekb.eg/article_19527.html}, eprint = {https://ejss.journals.ekb.eg/article_19527_544aebf186604417aa55d0ef664ebf18.pdf} }