LIFE SCIENCE

Detailed explanation-1: -Permeability is commonly measured in terms of the rate of water flow through the soil in a given period of time.

Detailed explanation-2: -The permeability of soil describes how water (or other liquid) and air are able to move through the soil. In the case of rainfall or irrigation, water moves very easily through highly permeable soils and very slowly through soils with low permeability.

Detailed explanation-3: -The permeability rate is a measure of how fast applied irrigation water moves through the soil. If an irrigator applies water at a rate exceeding the ability of the soil to accept it, the water will pool on the surface and eventually will run off, causing a non-uniform irrigation application and soil erosion.

Detailed explanation-4: -Movement of water into soil is called infiltration, and the downward movement of water within the soil is called percolation, permeability or hydraulic conductivity.

Detailed explanation-5: -Percolation is the movement of water through soil, and the percolation rate is the speed at which that movement occurs. Percolation rate is calculated using the following formula: Percolation rate = Amount of water (mL)percolation time (mins)