Waterlogging Causes Explained

Waterlogging occurs when the soil becomes saturated with water, hindering plant growth and causing other issues. This happens when water supply exceeds the drainage capacity or evaporation rate.

Analyzing Causes of Waterlogging

We need to identify the option that does NOT contribute to waterlogging:

• Frequent irrigation: Regularly adding large amounts of water through irrigation, without adequate drainage, can saturate the soil, leading to waterlogging. This is a potential cause.
• High water table: When the groundwater level (water table) is close to the surface, the soil has limited capacity to absorb more water, increasing the risk of waterlogging. This is a known cause.
• Seepage from unlined canals: Water leaking from canals into the surrounding soil raises the local groundwater level, contributing significantly to waterlogging in adjacent areas. This is a common cause.
• Excess tapping of the ground water: Pumping out groundwater (tapping) effectively lowers the water table. This process helps in draining the soil and preventing waterlogging, rather than causing it.

Conclusion

Based on the analysis, extracting groundwater excessively is the action that works against waterlogging, unlike the other options which contribute to it.

Therefore, the factor that is NOT a cause of waterlogging is the excess tapping of groundwater.