Question

The characteristic of Saline-Alkali soil are

• A. pH $>$ 8.5, EC$<$ 4 dSm$^{-1}$, ESP $>$ 15
• B. pH $>$ 8.5, ESP $<$ 15, EC $>$ 4 dSm$^{-1}$
• C. pH $<$ 8.5, ESP $>$ 15, EC $<$ 4 dSm$^{-1}$
• D. pH $>$ 8.5, ESP $>$ 15, EC $<$ 4 dSm$^{-1}$

Hint:

Remember: High pH, high ESP, and low EC are indicators of sodic (alkali) soils.

Answer 1

The Correct Option is D

Saline-Alkali soils are characterized by high pH ($>$ 8.5), high exchangeable sodium percentage (ESP $>$ 15), and low electrical conductivity (EC $<$ 4 dSm$^{-1}$), indicating low soluble salt content but high sodium hazard.