Field capacity of soil is 28% and permanent wilting point is 18%. The effect root zone of crop is 70 cm. If the density of soil and water is 1.3 g/cc and 1.0 g/cc respectively, find the depth of water required for irrigation of crop.
1
8.5 cm
2
9.1 cm
3
10.0 cm
4
11.2 cm