Current science international最新文献_第4页

Assessment of the Origin, Formation and Uniformity of Some Soils, South of RoodEl Farj - El Dabaa Road RoodEl Farj - El Dabaa公路以南一些土壤的起源、形成和均匀性评价

Current science international Pub Date : 2022-01-01 DOI: 10.36632/csi/2022.11.2.17

T. Yossif, E. S. A. Abdel-Gaphour, M. Khalifa

{"title":"Assessment of the Origin, Formation and Uniformity of Some Soils, South of Rood\u0000El Farj - El Dabaa Road","authors":"T. Yossif, E. S. A. Abdel-Gaphour, M. Khalifa","doi":"10.36632/csi/2022.11.2.17","DOIUrl":"https://doi.org/10.36632/csi/2022.11.2.17","url":null,"abstract":"The current study aimed at the assessment of the nature of soil origin, formation and the degree of soil profile uniformity in the area located South of Rood El Farj - El Dabaa Road, north western desert of Egypt. The Sentinel-2A satellite image (2022) and the Digital Elevation Model (DEM) were used to identify the common landforms which are surface of El Diffa plateau, foot slope of plateau, residual hills, local depression, gravelly sand plain, sand sheets and sand dunes. Fifteen soil profiles were morphologically described and sampled and the statistical size parameters and mineralogical constituents of sand fraction were determined. The results obtained indicated that the soil are moderately sorted to poorly sorted, strongly coarse to fine skewed and very platy to very lepto kourtic; indicating the predominance of transportation and deposition of the soil materials within aqueous media. Regarding the mineralogical composition of sand fraction, quertz represents ≥ 90.5% of the light minerals, followed by feldspars (plagioclase, orthoclase and microcline). In addition, muscovite and calcite minerals were detected in minute number. Concerning the heavy minerals, opaques are the major fraction constituent. In connection with the complementary non-opaque minerals, the first abundance are unstable minerals of igneous origin followed by the ultra-stable index minerals (sedimentary origin minerals). Metastable origin minerals are found in palpable portions. The depth-wise distribution of the index minerals as well as the uniformity and weathering ratios change irregularly indicating that the soils are formed of multi-origin parent materials that are still poorly developed.","PeriodicalId":90815,"journal":{"name":"Current science international","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69662551","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}

引用次数: 1

A Note on Cone Metric Spaces 关于圆锥度量空间的注记

Current science international Pub Date : 2022-01-01 DOI: 10.36632/csi/2022.11.3.23

A. M. Zaki, Abeer O. Ismail

引用次数: 0

Saliva Can Be an Indicator for Aging. A Review 唾液是衰老的指示器。回顾

Current science international Pub Date : 2022-01-01 DOI: 10.36632/csi/2022.11.1.6

引用次数: 1

Ameliorative Effect of Silicate in Soil and Plant. A Review 硅酸盐对土壤和植物的改良作用。回顾

Current science international Pub Date : 2022-01-01 DOI: 10.36632/csi/2022.11.1.3

H. Siam, Abd El-Moez, S. Mahmoud, A. Taalab, G. W. Ageeb, Mona G. Abd El Kader

{"title":"Ameliorative Effect of Silicate in Soil and Plant. A Review","authors":"H. Siam, Abd El-Moez, S. Mahmoud, A. Taalab, G. W. Ageeb, Mona G. Abd El Kader","doi":"10.36632/csi/2022.11.1.3","DOIUrl":"https://doi.org/10.36632/csi/2022.11.1.3","url":null,"abstract":"Silica is the scientific name for a group of minerals made of silicon and oxygen. Silica is found in most mineral deposits in the world in both crystalline and non-crystalline (amorphous) forms. Silicon concentrations vary greatly in plant aboveground parts, ranging from 0.1 to 10.0% of dry weight. Silicates soil amendments provide effective and efficient means to correct a number of soil chemical imbalances, nutrient deficiencies and toxicity issues. Soil treatment with biogeochemically active Si substances optimizes soil fertility through improved water, physical and chemical soil properties and maintenance of nutrients in plant-available forms. The amount of Si in soil may vary considerably from 1 % to 45 %. Most Si is present in the soil as insoluble oxides or silicates, but plants can easily absorb silicic acid Si (OH) 4 from soil. Silicic acid is generally found in the range of 0.1-0.6 mM in soils. Unfortunately, soluble Si polymerizes insect pests such as leaf spider and mites. It prevents physical penetration and/ or makes the plant cells less susceptible to enzymatic degradation by fungal pathogens. rice, fusarium wilt, and corynespora leaf spot on cucumber. Silicon suppresses insect pests such as stem borer, brown plant hopper, rice green leaf hopper, and white backed plant hopper, and no insect pests such as leaf spider and mites. It prevents physical penetration and / or makes the plant cells less susceptible to enzymatic degradation by fungal pathogens.","PeriodicalId":90815,"journal":{"name":"Current science international","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69660723","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}

引用次数: 0

Assessment of the Allelopathic Effect of Sweet and Bitter Lupine Seed Powder onControlling Canarygrass Associated Faba Bean 甜、苦羽扇豆种子粉防治金丝雀伴生蚕豆化感作用评价

Current science international Pub Date : 2022-01-01 DOI: 10.36632/csi/2022.11.2.11

Kowther G. El-Rokiek, S. E. A. Ahmed, N. Messiha, A. Sanaa, Mohamed, R. El-Masry

{"title":"Assessment of the Allelopathic Effect of Sweet and Bitter Lupine Seed Powder on\u0000Controlling Canarygrass Associated Faba Bean","authors":"Kowther G. El-Rokiek, S. E. A. Ahmed, N. Messiha, A. Sanaa, Mohamed, R. El-Masry","doi":"10.36632/csi/2022.11.2.11","DOIUrl":"https://doi.org/10.36632/csi/2022.11.2.11","url":null,"abstract":"The aim of this work is to study the allelopathic effects of incorporation of the seed powder of sweet and bitter lupine on the growth of canarygrass (Phalaris minor) associated faba bean (Vicia faba L.). For this purpose, the experiments were conducted in the greenhouse of the National Research Centre, Giza, Egypt in the two winter successive seasons, 2017/2018 and 2018/2019. The seed powder of sweet and bitter lupine was incorporated to the soil surface at rates of 5, 10, 15, 20 and 25g/kg soil. The results indicated reduction in canarygrass growth by both sweet and bitter lupine. Weed growth inhibition increased by increasing the concentration of the two seed powder. The highest rate of bitter or sweet lupine seed powder at 25g/kg soil gave the highest growth inhibition which controlled more than 80 and 60% of canarygrass. Weed growth suppression of canarygrass was associated with increasing in faba bean growth. The results also revealed increasing in number of pods/plant, weight of pods / plant, weight of seeds / plant and weight of 100 seeds that represented yield and yield components of faba bean. The results suggested that sweet and bitter lupine could be alternated chemical herbicides in controlling canarygrass.","PeriodicalId":90815,"journal":{"name":"Current science international","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69660849","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}

引用次数: 0

Potential Inhibition of Methanolic Khella Seed Extractagainst Milk Borne Pathogenic Bacteria in Vitro 甲醇海葵籽提取物对乳源致病菌的体外抑制作用

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.10

引用次数: 0

Determination of organochlorine pesticides (OCPs) residues in some Egyptian freshwater fish 埃及淡水鱼中有机氯农药残留量的测定

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.11

引用次数: 0

Implications of School Plant Utilization in State Universities in South East Geo-Political Zone of Nigeria 尼日利亚东南地缘政治区州立大学校园植物利用的意义

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.12

引用次数: 0

Importance of palatal rugae in Prosthodontics as an aid an individual identification 腭纹在口腔修复学中作为个体识别辅助工具的重要性

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.19

引用次数: 0

Pharmacological Properties and Health Benefits of Flaxseed: A Review 亚麻籽的药理特性及保健作用综述

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.2

引用次数: 1