In very simple and
practical terms, in relation to plants, osmosis is the transfer of
water (and nutrients) through roots into the plant. In some extreme
cases it is possible for the reverse to take place.
I will not go into all
the technical reasons for this, it is sufficient for us growers to
know the principles. Other factors are involved but do not require
discussion at this stage.
Water (with nutrients)
with a lower electrical conductivity (EC) will transfer into plants
that have a higher EC. See Section on ELECTRICAL CONDUCTIVITY. Or the
reverse in extreme circumstances.
In practical terms, if
the plant is active and growing well and has a good EC, water (with
nutrients) and lower EC, will pass into the plant giving conditions
for continued active growth.
The principle of controlled nutrition
must be applied with regard to age, phase and pattern of growth,
flowering etc., see further information under NUTRITION.