Journal of Agricultural and Marine Sciences最新文献_第3页

Evaluation of Salinity Intrusion in Arable Lands of Al-Batinah Coastal Belt Using Unmanned Aerial Vehicle (UAV) Color Imagery 利用无人机彩色图像评估Al-Batinah海岸带耕地的盐度入侵

Journal of Agricultural and Marine Sciences Pub Date : 2020-02-10 DOI: 10.24200/jams.vol24iss0pp44-50

S. Al-Rahbi, Y. Al-Mulla, H. Jayasuriya

{"title":"Evaluation of Salinity Intrusion in Arable Lands of Al-Batinah Coastal Belt Using Unmanned Aerial Vehicle (UAV) Color Imagery","authors":"S. Al-Rahbi, Y. Al-Mulla, H. Jayasuriya","doi":"10.24200/jams.vol24iss0pp44-50","DOIUrl":"https://doi.org/10.24200/jams.vol24iss0pp44-50","url":null,"abstract":"Salinity by seawater intrusion due to excess groundwater pumping for irrigation is a major environmental challenge in the coastal areas of Oman. Increasing salinity levels moving inward the arable lands is happening in a rapid manner. Thus, salinity needs to be evaluated and quantified using a fast and accurate method. The objective of this study is to estimate salinity intrusion in Al-Batinah coastal belt using color aerial imaging. The study was conducted in five randomly selected sites with increasingly different distances from the seashore of Al-Suwaiq area in Al-Batinah region. Color aerial images were acquired for each site by an Unmanned Aerial Vehicle (UAV). Images were enhanced by orthorectification in ENVI software. Green Leaf Index (GLI) was obtained from each site image using Matlab software. Image analysis results were compared with the results of analyzed soil and water samples taken for ground-truth verification. There was a strong negative correlation between the distance from the seashore and the soil EC of each site (R = -0.95). Similarly, the mean value of GLI increased as the salinity levels decreased, R= -0.96 and -0.92 for soil EC and water EC, respectively. The findings of this research work demonstrated the possibility of accurately use of color images taken by a UAV to quantify the salinity effect on vegetation along the costal belt.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"24 1","pages":"44-50"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48729013","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: 3

Is Co-management Feasible in Achieving Fisheries Sustainability? A Case of Oman’s Lobster Fishery 实现渔业可持续发展的共同管理可行吗？阿曼龙虾渔业案例

Journal of Agricultural and Marine Sciences Pub Date : 2020-02-10 DOI: 10.24200/jams.vol24iss0pp2-18

S. Bose, A. Balushi, Ahmed Al-Haddabi, Ruqaiya Al-Bulushi

{"title":"Is Co-management Feasible in Achieving Fisheries Sustainability? A Case of Oman’s Lobster Fishery","authors":"S. Bose, A. Balushi, Ahmed Al-Haddabi, Ruqaiya Al-Bulushi","doi":"10.24200/jams.vol24iss0pp2-18","DOIUrl":"https://doi.org/10.24200/jams.vol24iss0pp2-18","url":null,"abstract":"Abstract: This study assesses the feasibility of co-management arrangements in managing scalloped spiny lobster ( Panulirus homarus ) fishery in the Sultanate of Oman. The appraisal is conducted using various indicators involving pre-implementation phase and institutional characteristics and substantiated by findings of the review of relevant local and global literature and the results of a structured questionnaire survey conducted during 9-28 June, 2013 with 536 randomly selected fishers from three Governorates namely Sharqiyah, Al-Wusta, and Dhofar. The former method helps identifying suitable assessment criteria and provides indication of readiness while the later method helps determining primary stakeholders’ perceived views on various aspects of regulatory measures and co-management arrangements. While findings related to fishers’ commitments, willingness to support government decisions, willingness to participate in co-operative research, and preference for co-operative decision-making are promising, institutional weaknesses identified under the category of ‘interactive organization’, ‘resource ownership and control’, ‘existence of planned process’, and ‘diversity’ should be of major concerns for policy-makers in moving towards co-management arrangements. Based on the findings some policy implications are also discussed.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"24 1","pages":"2-18"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43496054","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: 4

Manipulating Some Culturing Conditions Enhances Production of Solanine in Microshoots, Callus and Cell suspension Cultures of Solanum nigrum L.: A Wild Medicinal Plant 操纵一些培养条件可提高野生药用植物龙葵微芽、愈伤组织和悬浮细胞中龙葵碱的产量

Journal of Agricultural and Marine Sciences Pub Date : 2020-01-01 DOI: 10.24200/jams.vol24iss0pp51-62

R. Shibli

{"title":"Manipulating Some Culturing Conditions Enhances Production of Solanine in Microshoots, Callus and Cell suspension Cultures of Solanum nigrum L.: A Wild Medicinal Plant","authors":"R. Shibli","doi":"10.24200/jams.vol24iss0pp51-62","DOIUrl":"https://doi.org/10.24200/jams.vol24iss0pp51-62","url":null,"abstract":"Solanum nigrum L. is a medicinal plant of solanaceae family with distinguished therapeutic properties. Traditionally, S. nigrum. had been used as an anti-tumorgenic, antioxidant, hepatoprotective, diuretic, and antipyretic agent. The most important alkaloid member in this plant is solanine. Therefore, this study was conducted to utilize tissue culture techniques for the enhancement of solanine production in the in vitro grown cultures of this promising neglected plant. For callus growth and development experimental part, the highest callus growth parameters (callus diameter (21.4 mm) and callus fresh weight (2202.4 mg) were obtained in callus grown on Murashige & Skoog MS media supplemented with 2,4-Dichlorophenoxyacetic acid (2.0 mg·L-1) plus 1.5 mg·L-1 Thidiazuron. Similar trend was also obtained in cell suspension culture experiment, as maximum growth was recorded at similar hormone combination. Moreover, High-performance liquid chromatography analysis revealed that, solanine was affected by growth regulator type and concentration. The highest solanine levels were obtained when the explants were treated with 6-benzylaminopurine at level of 2.0 mg·L-1, as solanine content reached up to (2.61, 1.53 mg.g-1) for callus and cell suspension, respectively, while, microshoot contained the highest solanine (4.52 mg.g-1 DW) at 6-benzylaminopurine level of 1.6 mg.L-1. Additionally, carbon source had positively affected solanine level, where 0.2 M sucrose resulted in production of the highest amounts (3.13, 2.03 and 1.20 mg.g-1 DW) of solanine in microshoots, callus and cell suspension, respectively. Also, exposing microshoots and callus to light intensity of (100 µmol.m -2 s-1) yielded the highest solanine content (4.03 and 1.26 mg.g-1 DW, respectively),while the lowest solanine levels (1.50 and 0.48 mg.g-1 DW) were observed in plant material exposed to the lowest light intensity treatment (25 µmol.m -2 s-1) .","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69294668","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

Effect of sugar replacement with date paste and date syrup on texture and sensory quality of kesari (traditional Indian dessert) 枣糊和枣糖浆替代糖对印度传统甜点kesari口感和感官品质的影响

Journal of Agricultural and Marine Sciences Pub Date : 2018-01-17 DOI: 10.24200/JAMS.VOL22ISS1PP67-74

Annamalai Manickvasagan, C. S. Kumar, Z. Al-Attabi

引用次数: 7

Agricultural resources management through a linear programming approach: A case study on productivity optimization of crop-livestock farming integration 基于线性规划方法的农业资源管理——以作物-畜牧业一体化生产力优化为例

Journal of Agricultural and Marine Sciences Pub Date : 2018-01-17 DOI: 10.24200/JAMS.VOL22ISS1PP27-35

H. Jayasuriya, R. Das

{"title":"Agricultural resources management through a linear programming approach: A case study on productivity optimization of crop-livestock farming integration","authors":"H. Jayasuriya, R. Das","doi":"10.24200/JAMS.VOL22ISS1PP27-35","DOIUrl":"https://doi.org/10.24200/JAMS.VOL22ISS1PP27-35","url":null,"abstract":"The crop-livestock integrated farming system practiced in most developing countries depends to a greater extent on the ecosystem as a whole. The importance of animals as an agent of nutrient recycle, sources of rural energy in terms of draft power and fuel as well as major contributor of the farm economy, has resulted into increased population of ruminant stock in these regions creating threats to the sustainability and productivity of land resources. This case-study research attempted to formulate optimum herd size compatible to different resource holding farm categories within the sub watershed in mid hills region of Nepal. The research was conducted by classified data collection in Nepal and analysis using Linear Programming (LP) techniques. The LP analysis revealed that the farmers of large, medium and small categories of farms can optimize their livestock holding with combination of 3 Livestock Units (LU) buffaloes and 4 LU goats, 2 LU buffaloes and 4 LU goats and 1 LU buffaloes and 4.4 LU goats with maximum return to the farm family without exerting pressure on the fragile natural resources.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"22 1","pages":"27-35"},"PeriodicalIF":0.0,"publicationDate":"2018-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45796412","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

Development of a decision support system for precision management of conjunctive use of treated wastewater for irrigation in Oman 阿曼灌溉废水联合使用精确管理决策支持系统的开发

Journal of Agricultural and Marine Sciences Pub Date : 2018-01-17 DOI: 10.24200/JAMS.VOL22ISS1PP58-62

H. Jayasuriya, A. Al-Busaidi, Mushtaque Ahmed

{"title":"Development of a decision support system for precision management of conjunctive use of treated wastewater for irrigation in Oman","authors":"H. Jayasuriya, A. Al-Busaidi, Mushtaque Ahmed","doi":"10.24200/JAMS.VOL22ISS1PP58-62","DOIUrl":"https://doi.org/10.24200/JAMS.VOL22ISS1PP58-62","url":null,"abstract":"This research aimed at finding alternative options for conjunctive use of treated wastewater (TW) with groundwater (GW) minimizing the irrigation water from aquifers in the Al-Batinah region with the assistance of a Decision Support System (DSS). Oman is facing a three-facet problem of lowering of GW table, wastewater over-production and excess TW. Approved guidelines for use of TW with tertiary treatments are of two classes: class-A (for vegetables consumed raw), class-B (after cooking). The developed DSS is comprised of four management subsystems: (1) data management in Excel, (2) model and knowledge management by macro programming in Excel, (3) with linear programming (LP) optimization models including transportation algorithms, and (4) user interface with Excel or Visual Basic (VB). The results are based on two extreme scenarios: zero TW excess, and zero GW used for irrigation. The DSS could predict water balance for number of crop rotations, and based on adjustable cost variables farmer profit margins could be created. Crop selections and rotation could be done using LP optimizations while transportation algorithm could organize best locations and capacities for treatment plants and the wastewater collection and transportation to farming areas via treatment plants. The developed DSS will be very useful as a water management, optimization and planning tool.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"22 1","pages":"58-62"},"PeriodicalIF":0.0,"publicationDate":"2018-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47045911","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: 3

Carbon and nutrient balances in three mountain oases in Northern Oman 阿曼北部三个山地绿洲的碳和营养平衡

Journal of Agricultural and Marine Sciences Pub Date : 2018-01-17 DOI: 10.24200/JAMS.VOL22ISS1PP75-86

A. Buerkert, M. Al-Rawahi, Martina Melapie, E. Schlecht

引用次数: 3

Increasing water productivity enhances water saving for date palm cultivation in Oman 提高水生产率提高阿曼椰枣种植节水

Journal of Agricultural and Marine Sciences Pub Date : 2018-01-17 DOI: 10.24200/JAMS.VOL22ISS1PP87-91

Y. Al-Mulla, H. M. Al-Gheilani

{"title":"Increasing water productivity enhances water saving for date palm cultivation in Oman","authors":"Y. Al-Mulla, H. M. Al-Gheilani","doi":"10.24200/JAMS.VOL22ISS1PP87-91","DOIUrl":"https://doi.org/10.24200/JAMS.VOL22ISS1PP87-91","url":null,"abstract":"The total amount of water consumption needed to irrigate the cultivated lands in the Sultanate Oman is 1487 Mm 3 . There are 7.6 million date palm trees currently planted in the farms in Oman covering an area of 23241 hectares or 35% of total agricultural area in the Sultanate in addition to 0.9 million palm trees planted in homes or for landscaping in public parks and beside the roads. Hence, among all cultivated crops in Oman, date palms are the major water consuming plants. They consume 558 Mm 3 that is 38% of total irrigation water and 31% of groundwater recharge that suffers an annual water deficit estimated at 316 Mm 3 . These findings framed the main objectives of this study: (1) to describe the current status of date palm tree cultivation in the Sultanate; (2) to suggest solutions to reduce high consumption of water while improve dates production; and (3) to explore how irrigation water can be saved through increasing water productivity through alternative date palm cultivation and irrigation practices. The water saving recommendation in this study was based on the collected from different sources in addition to the investigation on the water loss during irrigation practices. We found that it is possible to save a total of 396 Mm 3 of irrigation water by for instance reducing the cultivation of low quality/value date palm varieties and switching to modern over traditional irrigation systems. It is also important to determine the quality and value of the date palm cultivars to be planted in the proposed reduced area which will then contribute to an increased financial return for the farmers and thus to the country through increasing the water productivity by 64% of these new plots.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"22 1","pages":"87-91"},"PeriodicalIF":0.0,"publicationDate":"2018-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44781142","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: 8

Computer vision technique to classify dates based on hardness 基于硬度的数据分类计算机视觉技术

Journal of Agricultural and Marine Sciences Pub Date : 2018-01-17 DOI: 10.24200/JAMS.VOL22ISS1PP36-41

A. Manickavasagan, Naeema H. Al-Shekaili, N. K. Al-Mezeini, M. S. Rahman, N. Guizani

{"title":"Computer vision technique to classify dates based on hardness","authors":"A. Manickavasagan, Naeema H. Al-Shekaili, N. K. Al-Mezeini, M. S. Rahman, N. Guizani","doi":"10.24200/JAMS.VOL22ISS1PP36-41","DOIUrl":"https://doi.org/10.24200/JAMS.VOL22ISS1PP36-41","url":null,"abstract":"Hardness is one of the important attributes in determining the quality of dried fruits. Hardness assessment is normally carried out by manual inspection. This method is time consuming, laborious, expensive and subjective. The objective of this study was to develop a computer vision system with a monochrome camera to classify dates based on hardness. Date samples were obtained from three different growing regions in Oman and graded into soft, semi-hard, and hard classes based on hardness. A total of 1800 date samples were imaged individually using a monochrome camera (600 dates / class). Histogram and texture features were extracted from the acquired monochrome images and used in the classification models. The overall classification accuracies in three class model (soft, semi-hard, and hard) were 66% and 71% for linear discriminant analysis (LDA) and artificial neural network (ANN), respectively. It was improved to 84% and 77% in LDA and ANN, respectively while using two class model (soft and hard (semi-hard and hard together)). The histogram features were more contributing in the date classification based on hardness than image texture features. Computer vision technique has great potential to develop online quality monitoring systems for dates and other dried fruits.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"22 1","pages":"36-41"},"PeriodicalIF":0.0,"publicationDate":"2018-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41761526","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: 5

In-situ colour correction for digital images acquired under non-standard lighting conditions 在非标准照明条件下采集的数字图像的原位颜色校正

Journal of Agricultural and Marine Sciences Pub Date : 2018-01-17 DOI: 10.24200/JAMS.VOL22ISS1PP42-47

A. Manickavasagan, P. Alahakoon

{"title":"In-situ colour correction for digital images acquired under non-standard lighting conditions","authors":"A. Manickavasagan, P. Alahakoon","doi":"10.24200/JAMS.VOL22ISS1PP42-47","DOIUrl":"https://doi.org/10.24200/JAMS.VOL22ISS1PP42-47","url":null,"abstract":"Computer vision techniques using colour images are becoming popular in food and agriculture sector. Need of a standard illumination source is an important criterion in this approach to determine various attributes based on RGB values of the objects. In general, under laboratory conditions with standard lighting, an imaging system performs with high consistency in digitizing colour. However, in field conditions where the availability of a standard light source cannot be guaranteed, the colour interpretations may not yield accurate results. The objective of this study was to develop a simple algorithm to compensate for the variations in RGB values due to varying light conditions. It is intended to be useful in situations where taking digital images of objects without standard light sources is essential for a particular purpose. A set of quadratic transformation algorithms were developed to transform the RGB values of the images acquired under five different lighting conditions. The mean variance in RGB values of the image of a colour palette (with 6 different colours) taken under five lighting conditions were in the range of 277 – 548. After implementing the developed algorithm, this was reduced to 34 – 142. Similarly, this variance was reduced from 180 – 294 to 63 – 128 in the test conducted with a plant material. This algorithm can be easily adopted in all computer vision applications where variations in colour interpretations due to nonstandard lighting sources are common.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"22 1","pages":"42-47"},"PeriodicalIF":0.0,"publicationDate":"2018-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44275221","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