Question
According to USDA classification of salt affected soils;
a soil having EC >4 mmho/cm; ESP >15; pHSolution
1) Saline soils - Salt concentration is more and EC of the soil is > 4 dS/m, Exchangeable sodium percentage is < 15, pH is below 8.5 2) Non saline- alkali soil: (sodic soil)- Low soluble salts, EC < 4 dS/m, Exchangeable Na percentage is > 15, pH is > 8.5 3) Saline alkali soils - High concentration of soluble salts with ESP is greater than 15, EC> 4 dS/m, pH is < 8.5
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