Q.51 Waterlogging and soil salinity are some of the problems that have come in the wake of the Green Revolution. Discuss their causes and adverse effects on the environment.
Ans. Waterlogging and soil salinity is caused by extensive irrigation without proper drainage of water
The continuous presence of water draws salt to the surface of the soil, which gets deposited as a thin crust on the land surface or starts collecting at the roots of the plants.
Adverse effects
(i) Increased salt content stunts the growth of crop plants.
(ii) Root cells saturated with saline water gets damaged.
(iii) Plants die.
(iv) Crop yield gets affected.
(v) Financial loss to the farmers.
Although properly managing the soil-water system can correct the salination and waterlog, but the economic costs of this are very high.
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