Water is used by the plant in three
scales- the plant, the crop and the field
(Bouman 2009). Transport is the molecular
and the ionic movement of water molecule
from one location to another (Taiz and
Zeiger 2006). The rice plant uses water
which is the real ‘water use’ of the plant
scientifically by a process called
transpiration which along with the water is
believed to help in the upward flow of the
essential nutrients from the soil to the plant
above the soil surface. This transpired water
not only cools off the plant but also helps in
absorbing essential nutrients from the soil.
The rice crop will involve the plant and the
underlying soil wherein the water is lost
besides transpiration (T) by a process called