question_answer 62)

  Water logging and soil salinity are some of the problems that have come in the wake of the Green Revolution. Discuss their causes and adverse effects to the environment.

Answer:

                  Water logging and soil salinity is caused by extensive irrigation without proper drainage of water. Continuous presence of water draws salt to the surface of the soil, which gets deposited as a thin crust on the land surface or start collecting at the roots of the plants. Adverse effects (i) Increased salt content stunts the growth of (ii) crop plants, (iii) Root cells saturated with saline water gets damaged. (iv) Plants die. (v) Crop yield gets affected. (vi) Financial loss to the farmers. Although properly managing the soil-water system can correct the salination and water logging, but the economic costs of this are very high.