Question

Percolation of soil water to water table occurs through

• A. Micropores less than 0.2 $\mu$m
• B. Micropores between 0.2 to 20.0 $\mu$m
• C. Macropores between 20-50 $\mu$m
• D. Macropores bigger than 50 $\mu$m

Answer 1

The correct option is D Macropores bigger than 50 $\mu$m

Infiltration is downward entry of water into the soil whereas percolation is the downward flow of water through soil. Percolated water reaches deep in the soil to water table. Percolation of water first occurs through macropores that are bigger than 50 micron. These are present between soil particles and microspores. Later, percolation occurs through microspores.

Thus, the correct answer is option D.