A Novel Integrated Approach to Assess Groundwater Appropriateness for Agricultural Uses in the Eastern Coastal Region of India
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area
2.2. Geological Composition
2.3. Hydrogeology
2.4. Agricultural Pattern
2.5. Methodology
2.5.1. Sample Collection and Analysis
2.5.2. Agriculture Suitability Index (ASI)
2.5.3. Chlorinity Index (CI)
2.5.4. Mineral Saturation Index (MSI)
2.5.5. Seawater Mixing Index (SMI)
2.5.6. Unsupervised Machine Learning (USML) Techniques
3. Results
3.1. Suitability of Groundwater Using Various Irrigation Indices
3.2. Effect of Chloride on Groundwater Based on the CI
3.3. Chemical Equilibrium Based on the MSI
3.4. SMI for the Study Region
3.5. Overall Suitability of Groundwater Based on the ASI
3.6. Ionic Strength Identification Using USML Techniques
3.7. Discussion
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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S. No. | Parameter | Relative Weight (Wi) | Wi | Si |
---|---|---|---|---|
1 | Sodium absorption ratio (SAR) | 5 | 0.2273 | 18 |
2 | Percentage sodium (PS) | 4 | 0.1818 | 60% |
3 | Permeability index (PI) | 4 | 0.1818 | 25 |
4 | Magnesium absorption ratio (MAR) | 3 | 0.1364 | 50 |
5 | Potential salinity (PS) | 2 | 0.0909 | 10 |
6 | Kelly’s ratio (KR) | 1 | 0.0455 | 2 |
Chloride Concentration (g/L) | Water Class | Purpose of Use |
---|---|---|
0 to 0.3 | Class I | Suitable for all types of crops |
0.3 to 0.7 | Class II | Suitable for crops with high, medium, and low salt tolerance |
0.7 to 0.9 | Class III | Suitable for crops with high and medium salt tolerance |
0.9 to 1.3 | Class IV | Suitable for crops with high salt tolerance |
Above 1.3 | Class V | Not suitable for any crops |
Category | Pre Monsoon | Post Monsoon | Water Type | Change in Quality | ||
---|---|---|---|---|---|---|
Sample Count | Sample % | Sample Count | Sample % | |||
Sodium absorption ratio (SAR) | ||||||
Less than 10 | 52 | 92.86 | 50 | 89.29 | Excellent | −3.57 |
10 to 18 | 4 | 7.14 | 5 | 8.93 | Good | 1.79 |
18 to 26 | 0 | 0 | 1 | 1.79 | Doubtful | 1.79 |
Greater than 26 | 0 | 0 | 0 | 0.00 | Unsuitable | 0.00 |
Percent sodium (%Na) | ||||||
0 to 20 | 10 | 17.86 | 2 | 3.57 | Excellent | −14.29 |
20 to 40 | 18 | 32.14 | 13 | 23.21 | Good | −8.93 |
40 to 60 | 15 | 26.79 | 22 | 39.29 | Permissible | 12.50 |
60 to 80 | 13 | 23.21 | 16 | 28.57 | Doubtful | 5.36 |
Greater than 80 | 0 | 0 | 3 | 5.36 | Unsuitable | 5.36 |
Residual sodium carbonate (RSC) | ||||||
Less than 1.25 | 51 | 91.07 | 46 | 82.14 | Satisfactory | −8.93 |
1.25 to 2.5 | 3 | 5.36 | 4 | 7.14 | Marginal | 1.78 |
Greater than 2.5 | 2 | 3.57 | 6 | 10.71 | Un-Satisfactory | 7.14 |
Magnesium absorption ratio (MAR) | ||||||
Less than 50 | 10 | 17.86 | 6 | 10.71 | Suitable | −7.15 |
Greater than 50 | 46 | 82.14 | 50 | 89.29 | Unsuitable | 7.15 |
Permeability index (PI) | ||||||
Greater than 75 | 41 | 73.21 | 25 | 44.64 | Class I | −28.57 |
75 to 25 | 14 | 25 | 31 | 55.36 | Class II | 30.36 |
Less than 25 | 1 | 1.79 | 0 | 0 | Class III | −1.79 |
Kelly’s ratio (KR) | ||||||
Less than 1 | 37 | 66.07 | 23 | 41.07 | Good | −25.00 |
1 to 2 | 13 | 23.21 | 26 | 46.43 | Doubtful | 23.22 |
Greater than 2 | 6 | 10.71 | 7 | 12.5 | Unsuitable | 1.79 |
Potential salinity (PS) | ||||||
Less than 5 | 33 | 58.93 | 35 | 62.5 | Good | 3.57 |
5 to 10 | 9 | 16.07 | 12 | 21.43 | Doubtful | 5.36 |
Greater than 10 | 14 | 25 | 9 | 16.07 | Unsuitable | −8.93 |
Chloride Concentration (mg/L) | Pre Monsoon | Post Monsoon | Water Class | ||
---|---|---|---|---|---|
Sample Count | Sample % | Sample Count | Sample % | ||
0 to 300 | 38 | 67.86 | 41 | 73.21 | Class I |
300 to 700 | 13 | 23.21 | 10 | 17.86 | Class II |
700 to 900 | 0 | 0.00 | 1 | 1.79 | Class III |
900 to 1300 | 2 | 3.57 | 3 | 5.36 | Class IV |
Above 1300 | 3 | 5.36 | 1 | 1.79 | Class V |
Range of ASI | Pre Monsoon | Post Monsoon | Water Uses | ||
---|---|---|---|---|---|
Sample Count | % Sample | Sample Count | % Sample | ||
0 to 50 | 26 | 46.43 | 17 | 30.36 | For all types of crops |
50 to 100 | 20 | 35.71 | 31 | 55.36 | For all types of crops |
100 to 150 | 6 | 10.71 | 2 | 3.57 | Crops with low and medium salt tolerance |
150 to 200 | 2 | 3.57 | 3 | 5.36 | Crops with medium and high salt tolerance |
GT 200 | 2 | 3.57 | 3 | 5.36 | Unsuitable for all crops |
Rotated Component Matrix | |||||||
---|---|---|---|---|---|---|---|
Parameter/Component | Pre Monsoon | Post Monsoon | |||||
1 | 2 | 3 | 4 | 1 | 2 | 3 | |
pH | −0.353 | 0.771 | −0.190 | −0.387 | −0.069 | 0.689 | −0.539 |
Total dissolved solids | 0.908 | 0.028 | 0.404 | 0.072 | 0.981 | 0.055 | 0.168 |
EC | 0.908 | 0.033 | 0.405 | 0.073 | 0.982 | 0.060 | 0.119 |
Total hardness | 0.978 | −0.064 | 0.120 | 0.106 | 0.950 | −0.078 | 0.218 |
Ca2+ | 0.971 | −0.065 | 0.147 | 0.006 | 0.871 | −0.131 | 0.363 |
Mg2+ | 0.951 | −0.061 | 0.099 | 0.166 | 0.955 | −0.063 | 0.177 |
Na+ | 0.197 | 0.192 | 0.956 | 0.043 | 0.951 | 0.145 | 0.119 |
K+ | 0.712 | 0.043 | 0.204 | 0.113 | 0.399 | 0.104 | −0.137 |
Cl− | 0.622 | −0.064 | 0.756 | 0.049 | 0.989 | −0.041 | 0.089 |
SO42− | 0.987 | −0.023 | 0.015 | 0.026 | 0.686 | 0.148 | 0.530 |
CO32− | −0.070 | 0.896 | 0.234 | −0.209 | −0.004 | 0.896 | −0.074 |
HCO3− | 0.511 | 0.596 | 0.288 | 0.365 | 0.142 | 0.771 | 0.436 |
NO3− | 0.084 | −0.070 | 0.039 | 0.938 | 0.183 | −0.028 | 0.775 |
F− | 0.081 | 0.692 | −0.002 | 0.422 | 0.024 | 0.731 | −0.031 |
Component | Pre Monsoon | Post Monsoon | ||||
---|---|---|---|---|---|---|
Total | % of Variance | Cumulative % | Total | % of Variance | Cumulative % | |
1 | 7.749 | 55.348 | 55.348 | 7.580 | 54.144 | 54.144 |
2 | 2.425 | 17.324 | 72.672 | 2.515 | 17.965 | 72.109 |
3 | 1.272 | 9.086 | 81.758 | 1.139 | 8.133 | 80.242 |
4 | 1.137 | 8.121 | 89.879 | 0.996 | 7.112 | 87.354 |
5 | 0.658 | 4.698 | 94.577 | 0.750 | 5.354 | 92.708 |
6 | 0.344 | 2.457 | 97.034 | 0.489 | 3.489 | 96.198 |
7 | 0.209 | 1.494 | 98.529 | 0.226 | 1.615 | 97.813 |
8 | 0.105 | 0.753 | 99.281 | 0.149 | 1.065 | 98.878 |
9 | 0.078 | 0.556 | 99.837 | 0.110 | 0.783 | 99.661 |
10 | 0.022 | 0.157 | 99.994 | 0.045 | 0.323 | 99.984 |
11 | 0.001 | 0.004 | 99.998 | 0.002 | 0.013 | 99.998 |
12 | 0.000 | 0.002 | 100.000 | 0.000 | 0.002 | 99.999 |
13 | 4.55 × 10−5 | 0.000 | 100.000 | 0.000 | 0.001 | 100.000 |
14 | −1.01 × 10−17 | −7.26 × 10−17 | 100.000 | 2.74 × 10−16 | 1.95 × 10−15 | 100.000 |
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Kaliyappan, S.P.; Hasher, F.F.b.; Abdo, H.G.; Sajil Kumar, P.J.; Paneerselvam, B. A Novel Integrated Approach to Assess Groundwater Appropriateness for Agricultural Uses in the Eastern Coastal Region of India. Water 2024, 16, 2566. https://doi.org/10.3390/w16182566
Kaliyappan SP, Hasher FFb, Abdo HG, Sajil Kumar PJ, Paneerselvam B. A Novel Integrated Approach to Assess Groundwater Appropriateness for Agricultural Uses in the Eastern Coastal Region of India. Water. 2024; 16(18):2566. https://doi.org/10.3390/w16182566
Chicago/Turabian StyleKaliyappan, Shunmuga Priya, Fahdah Falah ben Hasher, Hazem Ghassan Abdo, Pazhuparambil Jayarajan Sajil Kumar, and Balamurugan Paneerselvam. 2024. "A Novel Integrated Approach to Assess Groundwater Appropriateness for Agricultural Uses in the Eastern Coastal Region of India" Water 16, no. 18: 2566. https://doi.org/10.3390/w16182566