Irrigation Engineering [1]
16) A useful soil moisture for plant growth is
17) The amount of water required to fill up the pore spaces in soil particles by replacing all air held in pore spaces, is known as
18) The moisture content of the soil, after free drainage has removed most of the gravity water, is known as
19) The water content at which plants can no-longer extract sufficient water from the soil for its growth, is called
20) The saturation capacity, field capacity and the permanent wilting point of a soil are 47% , 27% and 14% respectively. The available moisture for the crops grown in the soil is