Current science international最新文献_第8页

Nano Fertilizers, Their Role and Uses in Crop Productivity. A Review 纳米肥料在作物生产中的作用和用途。回顾

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.2.27

A. Rezk, A. El-Nasharty, S. El-Nwehy, O. Nofal

{"title":"Nano Fertilizers, Their Role and Uses in Crop Productivity. A Review","authors":"A. Rezk, A. El-Nasharty, S. El-Nwehy, O. Nofal","doi":"10.36632/csi/2021.10.2.27","DOIUrl":"https://doi.org/10.36632/csi/2021.10.2.27","url":null,"abstract":"Nano fertilizers (NFs) are an attractive alternative fertilizer in agriculture for improving growth parameters, yield, and quality of crops with increasing use efficiency of nutrients, minimizes fertilizers wastage and so the cultivation cost. The present paper aimed to supply an overview on the uses of nanofertilizers (NFs) in crops, highlighting their advantages and potential uses, and reviewing their effects under normal and environmental stress conditions. NFs are modified fertilizers which produced using nanotechnology by chemical, physical or biological methods to enhance their properties and composition, which positively affecting crop yields. Various studies have showed the benefits of using nanofertilizers instead of the conventional ones due to their highly specific surface area and smaller particles size which led to improving absorbent ability, controlled release kinetics and finally reaching to highest nutrient use efficiency, in addition to reducing the environmental pollution resources. Also, these nanometric fertilizers are superior to traditional fertilizers in the efficiency of their absorption (Nutrient Use Efficiency) and activation of the metabolic processes inside the plant due to the higher surface area of their molecules, use of less quantities with greater effectiveness and their supply to plants with their nutrients’ needs for longer periods comparing to the traditional forms and positively improve the biochemical content of crop and its quality. In this concern, NFs can release their nutrients during longer period (40-50 days), while in 4-10 days only, synthetic fertilizers do so. Otherwise, after field application, conventional fertilizers, especially urea, lose around fifty percent of its nitrogen content. In other words, research have shown that, NFs release nutrients 12 times more slowly comparing to synthetic fertilizers which reflecting on increasing the yields and quality characteristics of crops. In conclusion, nanofertilizers in the form of nano materials through slow or controlled release mechanisms could support their active nutrients depending on plant requirement’s and in the proper time, which finally reflects in improving the crops production.","PeriodicalId":90815,"journal":{"name":"Current science international","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69656799","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

Onion Production as influenced by the application of cobalt with Different Doses ofNitrogen 不同施氮量钴对洋葱产量的影响

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.3.39

引用次数: 0

Seroprevalence of Helicobacter pylori infection among students of the HigherInstitute of Technical Sciences, Msallata, Libya 利比亚米萨拉塔高等技术学院学生幽门螺杆菌感染的血清阳性率

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.4.48

引用次数: 0

Assessment of Some Trace Elements Levels and Their Relation to Land Uses byMultivariate Analysis and GIS - Burg El Arab – Egypt 基于多元分析和GIS的几种微量元素水平评价及其与土地利用的关系- Burg El Arab - Egypt

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.4.55

引用次数: 0

Using Whole Exome Sequencing, a Case of Autosomal Recessive Spastic Paraplegia50 caused by a splicing mutation in AP4M1 gene 应用全外显子组测序分析AP4M1基因剪接突变引起的常染色体隐性痉挛性截瘫50 1例

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.4.56

引用次数: 0

Using Different Substrate Materials (Local and Imported) For Producing Eggplant on Rooftops 使用不同的基质材料(本地和进口)在屋顶上生产茄子

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.4.67

N. Metwally

{"title":"Using Different Substrate Materials (Local and Imported) For Producing Eggplant on Rooftops","authors":"N. Metwally","doi":"10.36632/csi/2021.10.4.67","DOIUrl":"https://doi.org/10.36632/csi/2021.10.4.67","url":null,"abstract":"Turning rooftops in Egypt to green cultivated tops full with vegetable crops can help in food security specially in big cities by increase the availability of fresh vegetables within cities and this can help in more stability in vegetable prices and reduce the extreme fluctuation in vegetable prices that happens in recent years. Furthermore, increase fresh vegetables help to secure food needs of citizens specially under the situation of continuous increase of Egyptian population. In this context, an experiment was carried out in the rooftop garden of Central Laboratory for Agricultural Climate (CLAC), Agriculture Research Center, Ministry of Agriculture and Land Reclamation, Dokki, Giza, Egypt during summer seasons of 2019 and 2020. The experiment was conducted to investigate the effect of using different substrate materials (local and imported) on the growth and production of eggplant cultivated in rooftop gardens. The tested growing media consisted of local substrates mixed together or with imported substrates available in the local market to reduce the cost of the growing media. 9 growing media have been tested in this study in relation to growth and yield of eggplant grown on rooftops and their description were as follow; v/v (SPe1), sand : perlite (2:1) v/v (SPe2), sand : rice husks (1:1) v/v (SR1), sand : rice husks (2:1) v/v (SR2), sand : rice husks (1:2) v/v (SR3), crashed red bricks (CRb) and small gravel (Gr). Different measurements have been recorded during the experimental time such as; plant height, number of leaves, fresh and dry weights of aerial parts and roots, ratios between aerial parts and roots using both fresh and dry weights values, yield per m 2 , (N, P, K) % in leaves, and initial costs of growing media in comparison to yield. Results indicated that, from all 9 tested growing media mixtures SR1 recorded the highest values regarding plant growth and yield followed by SR2. Nevertheless, when we compare between the cost of the growing media and yield, data indicated that SR2 was the cheapest growing medium followed by SRI. The initial cost of the growing media was about 13.5 and 10.75 E.P for SR1 and SR2 respectively and average yield was about 12.68 and 10.96 kg/m 2 for SR1 and SR2 respectively), while the most expensive growing media was SPe1 .The initial cost for SPe1 was about 92.5 E.P and average yield was about 6.60 kg/m 2 ). From all of that, both SR1 and SR2 can be considered as the most suitable growing media consisted of local materials (sand and rice husks) for producing eggplants on rooftops.","PeriodicalId":90815,"journal":{"name":"Current science international","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69660133","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

Early yield production of watermelon grown in Wadi El-Tor, South Sinai in solar powered farm 西奈半岛南部Wadi El-Tor太阳能农场西瓜的早期产量

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.15

引用次数: 0

Impact of Tectonic Factors on The Emplacement of The Radioactive Mineralized Pegmatites of Wadi Abu Zawal Area, North Eastern Desert, Egypt 构造因素对埃及东北部沙漠Wadi Abu Zawal地区放射性矿化伟晶岩侵位的影响

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.17

引用次数: 3

Early Retirement Phase and TMD 提前退休阶段和TMD

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.1.20

引用次数: 0

Sitagliptin ameliorates the insulin sensitivity in Skeletal Muscles of MetabolicSyndrome Rat Model 西格列汀改善代谢综合征模型大鼠骨骼肌胰岛素敏感性

Current science international Pub Date : 2021-01-01 DOI: 10.36632/csi/2021.10.4.52

引用次数: 0