Question

If the concentration of salt in the soil is too high and the plants may wilt even if the field is thoroughy irrigated. Explain

Answer 1

High salt concentration results in high be osmotic potential of the soil solution, so the plant has to use more energy to absorb water. Under extreme salinity conditions, plants may be unable to absorb water and will wilt even if the surrounding soil is thoroughly irrigated. This is also referred to as the osmotic or water deficit effect of salinity.