Consider the following data
Root zone depth = 2 m
Existing water content = 5%
Dry density of soil = 15 kN/m3
Water applied to the soil = 500 m3
Water loss due to evaporation and deep percolation = 10%
Area of plot = 1000 m2
The field capacity of the soil will be nearly
1
16.8%
2
17.7%
3
18.8%
4
19.7%