Question
Download Solution PDFWhich of the following statements is INCORRECT?
A. Seepage drains reduce the chances of water logging.
B. Water logging makes the land more productive.
C. Fertilisers used in irrigation may contribute in various ways to the problem of water pollution.
D. Water logging is caused due to the presence of permeable strata.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Water logging:
- Water logging of the land occurs when the water table rises and the soil in the root zone of the plants gets saturated and the air circulation is stopped.
- Water logging generally occurs because of intensive irrigation and inadequate drainage of the irrigated land.
- Waterlogging affects the productivity and fertility of the land and causes a reduction in crop yield.
Causes of waterlogging -
- Over-Irrigation
- Inadequate surface drainage
- Obstruction of natural surface drainage
- Obliteration of a natural drainage
- Obstruction of natural subsurface drainage
- Impervious top layer
- Seepage from canals
- Construction of a reservoir
- Defective methods of cultivation
- Defective irrigation practice
Effect of waterlogging -
- Reduction in the growth of plants
- Difficulty in cultivation
- Accumulation of salts
- Weed growth
- Increase in plant diseases
- Lowering of soil temperature
- Increase in incidence of malaria
Hence statements B and D are incorrect.
Last updated on May 28, 2025
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