scholarly journals Sustainability of Groundwater for Irrigation Purposes in Semi-arid Parts of Namibia

2021 ◽  
Vol 3 ◽  
Author(s):  
Hilma Rantilla Amwele ◽  
Nnenesi Anna Kgabi ◽  
Liisa Indileni Kandjibi
Keyword(s):  
Electrical Conductivity ◽  
Hard Water ◽  
Total Dissolved Solids ◽  
Sodium Adsorption Ratio ◽  
Quality Data ◽  
Total Hardness ◽  
Sodium Percentage ◽  
Kelly’S Ratio ◽  
Magnesium Adsorption Ratio ◽  
Semi Arid

The groundwater quality data from 1,137 boreholes in 10 regions of Namibia were assessed for sodium adsorption ratio (SAR), Kelly's ratio (KR), sodium percentage (Na%), magnesium adsorption ratio (MAR), total hardness (TH), soluble sodium percentage (SSP), potential salinity (PS), electrical conductivity (EC), and total dissolved solids (TDS) to determine the suitability for the irrigation. The groundwater was classified as follows: all the regions' groundwater shows the TH as very hard water of >4.6 meq/l, PS as not suitable for irrigation (>3 meq/l), and EC as very highly (0.75–2.25 dS/m). However, Na%: 10% of regions have doubtful water (>80%), MAR: 30% of regions are not recommended for irrigation (>50 meq/l), and TDS: 90% of the regions have slightly moderate (450–2,000 mg/l) and 10% have groundwater that is unsuitable for agricultural purposes (>2,000 mg/l). The unsuitability of groundwater for irrigation could be due to higher concentrations of K+, Mg2+, Ca2+, and Cl− that has exceeded the FAO guideline for irrigation. Some groundwater qualities had inverse classification such as SAR all regions have excellent groundwater (<10 meq/l), KR: 90% of regions have safe water (<1 meq/l), Na%: 50% of regions have good groundwater (20–40%), 40% of the regions have permissible water (40–80%), and MAR: +70% of region's water is recommended for irrigation (<50 meq/l).

scholarly journals Assessment of irrigation water qualities of Abak River, Abak, Akwa Ibom State, Nigeria

2019 ◽  
Vol 25 (2) ◽  
pp. 135-144
Author(s):  
E.A. Udom ◽  
A.E. Ekpo ◽  
S.I. Oluka
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Sodium Bicarbonate ◽  
River Water ◽  
Sodium Adsorption Ratio ◽  
Residual Sodium Carbonate ◽  
Permeability Index ◽  
Sodium Percentage ◽  
Kelly’S Ratio ◽  
Magnesium Adsorption Ratio

Irrigated agriculture is dependent on an adequate water supply of usable quality. Since water quality is very important for any intended use, the Abak River water which is used for irrigation by the Cross River Basin Development Authority and the rural communities around the river bank was assessed for irrigation purposes. The River water samples were assessed for four months (from November, 2016 to February, 2017 for its irrigation water qualities. The water samples were analyzed for major cations: Na+, Ca2+,K+,Mg2+ and anions: Cl-, SO42-, HCO3-, CO32- and NO3.The important constituents that influence the water quality for irrigation such as Electrical Conductivity (EC), Total Dissolved Solid (TDS), Sodium Adsorption Ratio (SAR), Magnesium Adsorption Ratio (MAR), Permeability Index (PI), Kelly’s Ratio (KR), Residual Sodium Bicarbonate (RSBC), Soluble Sodium Percentage (SSP), (RSC) Residual Sodium Carbonate and Potential Salinity (PS) were assessed and compared with standard limits. The values of Sodium Adsorption Ratio (0.4 to 0.64), Soluble Sodium Percentage (28.16 to 34.68%), Residual Sodium Bicarbonate (2.82 to 3.15 meq/L), Permeability Index (3.20 to 3.98%), Magnesium Adsorption Ratio (77.78 to 87.59%), Kelly’s Ratio (0.13 to 0.161 meq/L), Electrical Conductivity (20.5 to 22.5 μs/cm), Total Dissolved Solids (10.20 to 12.60 Mg/l) Residual Sodium Carbonate (0.298 to 0.8 meq/L) and Potential Salinity (1.09 – 1.358 meq/L) were found to be within the safe limits and thus suitable for irrigation purposes, except MAR which is above 50% the safe limit. The river water will thus cause neither salinity hazard nor has an adverse effect on the soil properties of the study area or on crops.Keywords: Abak River, Water Quality Irrigation, Parameters, Assessment

scholarly journals Assessment of irrigation water quality of Bogra District in Bangladesh

1970 ◽  
Vol 34 (4) ◽  
pp. 507-608 ◽  
Author(s):  
MS Islam ◽  
SZKM Shamsad
Keyword(s):  
Water Quality ◽  
Irrigation Water ◽  
Total Dissolved Solids ◽  
Sodium Adsorption Ratio ◽  
Total Hardness ◽  
Irrigation Water Quality ◽  
Chemical Parameters ◽  
Kelly’S Ratio ◽  
Surface And Groundwater

Some important physio-chemical parameters of surface and groundwater of Bogra District were evaluated for the criteria of irrigation water quality. Forty four water samples were collected in the peak dry season (December-April) from different areas of Bogra District. The study revealed that temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), sodium adsorption ratio (SAR), soluble sodium percentage (SSP), residual sodium carbonate (RSC), total hardness (Ht) and Kelly’s ratio of waters were found within the permissible limits for irrigation purposes. Any initiative for surface and groundwater development for planned irrigation practices is highly encouraged. Key Words: Irrigation water (surface and groundwater); quality; Bogra District. DOI: 10.3329/bjar.v34i4.5836Bangladesh J. Agril. Res. 34(4) : 597-608, December 2009

scholarly journals Assessment of Groundwater Quality for Irrigation on the Bank of Noyyal River at Tiruppur, Tamil Nadu, India

2015 ◽  
Vol 57 ◽  
pp. 1-6 ◽  
Author(s):  
A. Zahir Hussain ◽  
K.M. Mohamed Sheriff
Keyword(s):  
Electrical Conductivity ◽  
Groundwater Quality ◽  
Physicochemical Parameters ◽  
Tamil Nadu ◽  
Sodium Adsorption Ratio ◽  
Total Hardness ◽  
Residual Sodium Carbonate ◽  
Permeability Index ◽  
Groundwater Samples ◽  
Kelly’S Ratio

Tiruppur is a textile city located on the banks of Noyyal River a tributary of the River Cauvery. Twenty groundwater samples were collected in identical locations from bore wells. The concentrations of physicochemical parameters of pH, Electrical Conductivity (EC), Total Hardness (TH), Ca, Mg, Na, K, HCO3, SO4, Cl and NO3 were analyzed. The results of the concentrations were interpreted and measured with different irrigation indexes like Percent Sodium (%Na), Sodium Adsorption Ratio (SAR), Residual Sodium Carbonate (RSC), Permeability Index (PI), Kelly’s Ratio (KR), CAI-1 and CAI-2 were analyzed.

scholarly journals HYDROCHEMICAL ASSESSMENT OF GROUNDWATER OF EUPHRATES AQUIFER IN ANAH, WESTERN IRAQ FOR IRRIGATION PURPOSES

2020 ◽  
Vol 53 (2C) ◽  
pp. 121-133
Author(s):  
Muhammeed Jummah
Keyword(s):  
Electrical Conductivity ◽  
Groundwater Quality ◽  
Human Activity ◽  
Major Ions ◽  
Total Dissolved Solids ◽  
Sodium Adsorption Ratio ◽  
Dissolved Solids ◽  
Piper Diagram ◽  
Groundwater Samples ◽  
Sodium Percentage

Groundwater quality is of prime importance in determining its suitability for various human activity such as irrigation, therefore, groundwater samples are collected from selective wells in Anah city and subjected to hydrochemical analysis in order to measure the concentrations of the major ions, in addition to the Electrical Conductivity, pH, Total Dissolved Solids, Soluble Sodium Percentage (Na%), and Sodium Adsorption Ratio)SAR( to assess the suitability of groundwater for irrigation. Results showed that the groundwater in Anah city is characterized by excellent to good SAR with good Na% and accepted value of pH for irrigation, whereas, values of Electrical Conductivity and Total Dissolved Solids were not acceptable due to the rising of salinity (SO4 and Cl). According to Piper diagram, the type of water is Earth alkaline.

Hydrogeochemical investigation and groundwater quality in Essaouira region, Morocco

2019 ◽  
Vol 70 (9) ◽  
pp. 1317 ◽  
Author(s):  
Mohammed Bahir ◽  
Driss Ouazar ◽  
Salah Ouhamdouch
Keyword(s):  
High Salinity ◽  
Total Dissolved Solids ◽  
Major Elements ◽  
Geographical Information ◽  
World Health ◽  
Total Hardness ◽  
Essaouira Basin ◽  
Kelly’S Ratio ◽  
Health Organization ◽  
Very High

Given the scarcity, or even absence, of surface water and the domination of the semi-arid climate in the coastal zone of the Essaouira basin (Morocco), the Plio-Quaternary, Turonian, Barremian–Aptian and Hauterivian aquifers represent the main source of water for fine consumption and agriculture. However, the study of their quality is a priority. So as to reach the objective of this study, the combination of the two hydrogeochemical and geographical information system tools was used. The results obtained showed that the facies characterising the Plio-Quaternary aquifer was a combination of Ca–Mg–Cl and Na–Cl, and that characterising the Turonian, Barremian–Aptian and the Hauterivian aquifer was a combination of Ca–Mg–Cl. However, flagship ions in the study area are Cl, Na, Ca and Mg. For consumptions purpose, the comparison of the concentrations of major elements with the standards of the World Health Organization showed that all the elements presented concentrations below the threshold, except for chlorides, the concentrations of which exceeded the threshold. For the agricultural purposes, the two Wilcox and United States Salinity Laboratory (USSL) diagrams, and the spatial distribution of parameters total dissolved solids, total hardness, permeability Kelly’s ratio, sodium hazard, sodium percentage and nitrates showed that the groundwater in the study area is adequate for persistent plants with a high to very high salinity tolerance.

scholarly journals Assessment of Water Quality for Irrigation Purpose: A Case Study of Bassi and Chaksu Tehsils, Jaipur District, Rajasthan, India

2020 ◽  
Author(s):  
Arjun Lal Meena ◽  
Priyanka Bisht
Keyword(s):  
Electrical Conductivity ◽  
Sodium Absorption ◽  
United States Department ◽  
Sodium Absorption Ratio ◽  
Absorption Ratio ◽  
Quality Of Water ◽  
Irrigation Purpose ◽  
Sodium Percentage ◽  
Kelly’S Ratio

Quality of Groundwater has assessed for irrigation purpose to get the suitability of water. Water samples has analysed by employing different parameters: Electrical Conductivity, Sodium Absorption Ratio (SAR), Soluble Sodium Percentage (SSP), Residual Sodium Carbonate (RSC), Kelly’s Ratio, Potential Salinity and Corrosive Ratio. Suitability of Water for irrigation has presented by the diagram based on the combination of Electrical Conductivity and Sodium Absorption Ratio suggested by United States Department of Agriculture (USDA). Livelihood of the study area depends on the Agriculture and allied activities so it becomes more important to analyse the quality of water for irrigation.Keywords: Irrigation, Electrical Conductivity, Sodium Absorption Ratio, Kelly’s Ratio, Soluble Sodium Percentage.

scholarly journals A Study of Groundwater Characteristics by Using of Groundwater Quality Index and Pollution Index in Zubair District, Basra Province, Iraq

2018 ◽  
Vol 8 (1) ◽  
pp. 19-26
Author(s):  
Ammar S. Dawood ◽  
Mushtak T. Jabbar ◽  
Mudhar H. Gatea ◽  
Hayfaa J. Al-Tameemi
Keyword(s):  
Electrical Conductivity ◽  
Groundwater Quality ◽  
Quality Index ◽  
Calcium Nitrate ◽  
Pollution Index ◽  
Total Dissolved Solids ◽  
Total Hardness ◽  
Dissolved Solids ◽  
Groundwater Quality Index ◽  
Groundwater Samples

Abstract The present work evaluated the groundwater quality index (GWQI) depending on some physicochemical analyses of thirteen groundwater samples in the Zubair district in Basra Province, Iraq. The collected groundwater samples were subjected to an extensive physicochemical analysis to evaluate the characteristics of water for drinking purpose according to Iraqi standard. For calculating the (GWQI), twelve water quality parameters were considered; turbidity, pH, chloride, total dissolved solids, total hardness (TH), electrical conductivity (EC), sodium, sulphate, phosphate, calcium, nitrate, and magnesium. The analysis of the results reveals that all the samples surpassed the portability of drinking water limits. High values of the (GWQI) in the obtained groundwater samples could possibly be caused by the higher values of electrical conductivity, total hardness, chloride, total dissolved solids and sodium within the groundwater. The calculated GWQI values ranged from 73.36 to 595.92. The pollution index (PI) was calculated for the study area with values ranged from 2.97 to 8.26. Correlation coefficients amongst the chosen water parameters exhibited some strong relationships. Finally, the analysis shows that the groundwater in this particular area needs to be treated before its consumption, and in addition, it usually needs to avoid the hazard of contamination. Principal component analysis (PCA) and cluster analysis (CA) indicate that the acquiring-data from groundwater samples are explained 90.5 % of the variance in the data with a four-component system that explains a large portion of the total variance of collected data.

scholarly journals Physicochemical Analysis of Ground Water Samples of South Coastal Areas of Kanniya kumari in the Post-Tsunami Scenario

2016 ◽  
Vol 13 (2) ◽  
pp. 116-121
Author(s):  
Krishna Arunachalam ◽  
Monikandon Sukumaran ◽  
Mohammad Tanveer ◽  
Kesavan Devarayan
Keyword(s):  
Electrical Conductivity ◽  
Ground Water ◽  
Physicochemical Parameters ◽  
Tamil Nadu ◽  
Total Dissolved Solids ◽  
Physicochemical Analysis ◽  
Total Hardness ◽  
Sodium Potassium ◽  
Calcium Magnesium

In this study, the effect of ‘natural/self cleaning’ of ground water by precipitation after a decade of tsunami is evaluated along the coast of Kanniyakumari district, Tamil Nadu, India. The samples were collected from five stations namely Colachel, Muttom, Periyakadu, Manakudy, and Kanniyakumari. The physicochemical parameters such as turbidity, total dissolved solids, electrical conductivity, pH, alkalinity, total hardness, calcium, magnesium, sodium, potassium, chloride, and fluoride were evaluated and compared with the database of the pre-tsunami sample collected in 2004. The results indicated that the ‘natural cleaning’ has improved the quality of the ground water over the years after tsunami.

scholarly journals Comparative account of water chemistry of three perennial rivers of Morang district, Province No. 1, Nepal

2016 ◽  
Vol 6 (1) ◽  
pp. 57-62
Author(s):  
B. R. Subba ◽  
N. Balmiki ◽  
P. K. Yadav
Keyword(s):  
Electrical Conductivity ◽  
Comparative Study ◽  
Water Chemistry ◽  
Total Dissolved Solids ◽  
Total Alkalinity ◽  
Total Hardness ◽  
Spring Season ◽  
Chemical Parameters ◽  
Total Phosphorous ◽  
Physico Chemical

A comparative study of water chemistry of Keshaliya, Shinghiya and Lohandra rivers of Province No 1, Morang District, Nepal was performed for one spring season in 2016. Altogether 18 physico-chemical parameters were selected to be determined for each river during spring season. The values of each parameter recorded for the above rivers were pH (6.59 to 8.08), temperature (22.4 to 30.30C), electrical conductivity (336 to 537 NTU), DO (4.17 to 10.65 mg/l), total dissolved solids (168 to 268.5 mg/l), total hardness (145 to 204 mg/l), calcium hardness (106 to 180 mg/l), total alkalinity (172 to 226 mg/l), Silica (180 to 393 mg/l), total nitrogen (4.2 to 14 mg/l) total phosphorous (0.07 to 0.45 mg/l), BOD (4.24 to 126.27 mg/l), COD (9.20 to 252 mg/l), nitrate (<0.05 to 0.18 mg/l), chloride (4 to 36 mg/l), magnesium (4.13 to 21.4 mg/l) and calcium (12.15 to 72.29 mg/l).

scholarly journals Groundwater quality evaluation for irrigation application in Mandsaur region, Madhya Pradesh, India

2006 ◽  
Vol 34 ◽  
pp. 159-164
Author(s):  
Vinita Kulshreshtha ◽  
Pramendra Dev
Keyword(s):  
Electrical Conductivity ◽  
Sodium Adsorption Ratio ◽  
Madhya Pradesh ◽  
Total Hardness ◽  
Irrigation Application ◽  
Low Sodium ◽  
Wilcox Diagram ◽  
Groundwater Samples ◽  
Dug Wells

The chemical analysis of 22 water samples collected from representative open dug-wells existing in the Mandsaur area of Madhya Pradesh, India, was carried out for evaluating the quality of irrigation water. For this purpose, its colour, odour, taste, pH, total hardness, electrical conductivity, ionic concentrations, and various other parameters were determined. The calculated values of per cent sodium, Kelley's ratio, sodium adsorption ratio, residual sodium carbonate and magnesium hazard indicate that except at a few places, the groundwater, in general, is suitable for irrigation. The sodium adsorption ratio and electrical conductivity values were plotted on the U.S. Salinity Diagram. The plots of these parameters indicate that 8 samples fall in CS type (Medium Salinity and Low Sodium hazards), and 14 samples belong to C type (High Salinity and Low Sodium hazards). In general, the groundwater is favourable for irrigation use. The values of electrical conductivity and sodium percentage determined in respect of groundwater samples of Mandsaur were also plotted on the Wilcox Diagram. Based on this diagram, 4 samples represent Excellent to Good categories, whereas 18 samples indicate Good to Permissible categories. Based on this classification the groundwater of Mandsaur area, in general, is suitable for irrigation application.

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