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  1. Article ; Online: Foliar Spraying of Nano-Silicate and Nano-Zinc on Wheat (Triticum aestivum L.) Under Salt Stress Conditions Enhances Productivity and Reduces the Optimal Nitrogen Fertilizer Rate

    Ali, Ali M. / Ibrahim, Sherif M. / Omer, Amal M.

    Communications in Soil Science and Plant Analysis. 2023 Oct. 28, v. 54, no. 19 p.2731-2744

    2023  

    Abstract: Salinity stress poses a significant threat to agriculture, as it directly impacts crop growth and yield. The current study aimed at examining the role of foliar nano-silicate (nSiO₂) and nano-zinc (nZnO) applications in increasing wheat productivity and ... ...

    Abstract Salinity stress poses a significant threat to agriculture, as it directly impacts crop growth and yield. The current study aimed at examining the role of foliar nano-silicate (nSiO₂) and nano-zinc (nZnO) applications in increasing wheat productivity and nitrogen (N) use efficiency under salt stress conditions. A two-season field experiment was carried out on sandy soils irrigated with water from high-saline wells (4352 and 7040 mg L⁻¹). The study was conducted in a split-plot design, with main plots assigned to three treatments of foliar application of nSiO₂, nZnO, and control (nZero), and sub-plots assigned to six N fertilizer rates (0–300 kg N ha⁻¹). The use of nSiO₂ and nZnO increased wheat grain yield by 67 and 48% on average over nZero, respectively. When average wheat grain yields were plotted against increasing N fertilizer rates, a quadratic response curve was observed. Derivative solutions of the quadratic functions indicated that grain yield plateaued at 4641, 4560, and 3182 kg ha⁻¹ for nSiO₂, nZnO, and nZero treatments, respectively. The optimal N fertilizer rates for these yield levels were calculated to be 290, 353, and 386 kg N ha⁻¹. When the net returns to N fertilizer and nano-material use were considered, nSiO₂ had the highest net returns and the lowest optimal N fertilizer rate (229 kg N ha⁻¹), followed by nZnO (272 kg N ha⁻¹). The findings of the field experiment demonstrated that foliar spraying wheat with nSiO₂ and nZnO under salt stress conditions enhances productivity as well as responsiveness to N fertilizer.
    Keywords Triticum aestivum ; experimental design ; fertilizer rates ; field experimentation ; foliar application ; grain yield ; nanomaterials ; nitrogen ; nitrogen fertilizers ; plant analysis ; salt stress ; wheat ; N recovery efficiency ; nano-materials
    Language English
    Dates of publication 2023-1028
    Size p. 2731-2744.
    Publishing place Taylor & Francis
    Document type Article ; Online
    ZDB-ID 419718-5
    ISSN 1532-2416 ; 0010-3624
    ISSN (online) 1532-2416
    ISSN 0010-3624
    DOI 10.1080/00103624.2023.2240817
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Establishment of Soil Management Zones Using Multivariate Analysis and GIS

    Ali, Ali M / Ibrahim, Sherif M

    Communications in soil science and plant analysis. 2020 Oct. 27, v. 51, no. 19

    2020  

    Abstract: Delineation of soil management zones (MZ) that can define subfields with homogenous soil properties provides a basis for successful site-specific management. This study was conducted in order to create MZ for a field of 460 ha in Egypt using multivariate ...

    Abstract Delineation of soil management zones (MZ) that can define subfields with homogenous soil properties provides a basis for successful site-specific management. This study was conducted in order to create MZ for a field of 460 ha in Egypt using multivariate analysis and geographic information system (GIS). Soil samples were collected in a grid pattern from 104 topsoil (0–30 cm) locations within the field. Substantial variation was observed in shale depth (known locally as Tafla), electrical conductivity (EC), pH, CaCO₃, available phosphorus (P), potassium, iron (Fe), manganese, zinc, and copper. Principal component analysis was performed to aggregate and summarize the variability of the dataset. The analysis showed that shale depth, EC, pH, available P, and Fe are the parameters representing the overall variability. Accordingly, k-means clustering analysis was performed on the standardized data of these parameters, and three clusters were formed. These clusters were used for creating MZ with heterogeneity in overall soil properties. Zone #3 had favorable parameters led by deep shale depth (112.5 cm ±3.7) and EC (11.99 dS m⁻¹ ± 0.47), whereas zone #1 was the worst with shale depth of 60.7 cm ±7.98 and EC of 29.76 dS m⁻¹ ± 2.66. Zone #2 had intermediate conditions with shale depth of 100 cm ±10 and EC of 14.25 dS m⁻¹ ± 0.32. These subfields should be helpful for making successful agronomic decisions such as selecting crops, irrigation, and fertilization.
    Keywords copper ; data collection ; electrical conductivity ; geographic information systems ; iron ; irrigation ; manganese ; multivariate analysis ; pH ; phosphorus ; plant analysis ; potassium ; principal component analysis ; shale ; topsoil ; zinc ; Egypt
    Language English
    Dates of publication 2020-1027
    Size p. 2491-2500.
    Publishing place Taylor & Francis
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 419718-5
    ISSN 1532-2416 ; 0010-3624
    ISSN (online) 1532-2416
    ISSN 0010-3624
    DOI 10.1080/00103624.2020.1836207
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: A Tamao–Fleming oxidation route to dipeptides bearing N,O-acetal functionality

    Ibrahim, Sherif M.S / Gregory K. Friestad / Kara A. Slater / Koushik Banerjee

    Tetrahedron letters. 2017 Dec. 27, v. 58, no. 52

    2017  

    Abstract: Tamao–Fleming oxidation of the N-dimethylphenylsilylmethyl group linked to the nitrogen of a peptide bond enables access to dipeptide N,O-acetal functionality. The N-silylmethyl functionality serves as a latent form of the N,O-acetal which is revealed ... ...

    Abstract Tamao–Fleming oxidation of the N-dimethylphenylsilylmethyl group linked to the nitrogen of a peptide bond enables access to dipeptide N,O-acetal functionality. The N-silylmethyl functionality serves as a latent form of the N,O-acetal which is revealed after peptide bond construction.
    Keywords dipeptides ; moieties ; nitrogen ; organic compounds ; oxidation
    Language English
    Dates of publication 2017-1227
    Size p. 4864-4866.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2017.11.036
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Selective Extraction of Light Lanthanides(III) by

    Ibrahim, Sherif M / Zhang, Yan / Xue, Yun / Yang, Suliang / Ma, Fuqiu / Gao, Yang / Zhou, Yu / Tian, Guoxin

    ACS omega

    2019  Volume 4, Issue 24, Page(s) 20797–20806

    Abstract: The complexation and selectivity ... ...

    Abstract The complexation and selectivity of
    Language English
    Publishing date 2019-11-27
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.9b03241
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Journal: Neurotoxicity of Glycidamide, an Acrylamide Metabolite, Following Intraperitoneal Injections in Rats

    Abou-Donia, Mohamed B. / Ibrahim, Sherif M. / Corcoran, James J. / Lack, Leon / Friedman, Marvin A. / Lapadula, Daniel M.

    Journal of Toxicology and Environmental Health

    1993  Volume 39, Page(s) 447–464

    Keywords Schadstoffwirkung ; Neurotoxizitaet ; Epoxid ; Versuchstier ; Tierversuch ; Schadstoffbestimmung ; Fluessigkeitschromatografie ; Spektralanalyse ; Molekuelstruktur
    Language English
    Document type Journal
    Database OPAC and Environmental database (ULIDAT) of The Federal Environment Agency (UBA)

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