The Phenomenon of Osmotic Pressure
In the soil, water moves from areas with lower salt concentration to areas with higher salt concentration. This phenomenon is known as osmosis (or osmotic pressure).
As salt accumulates in the soil, the movement of water is hindered; consequently, the plant must expend more energy to draw water toward its roots—meaning a portion of the plant’s energy is consumed in the process. In extreme cases, water is actually drawn out of the roots and into the soil—a manifestation of the same osmotic process.
If salt levels exceed the plant’s tolerance threshold, it disrupts growth and, in severe cases, leads to the death of the plant.
Signs of scorching on the margins of cucumber leaves
Yellowing of cantaloupe leaf margins due to salt toxicity
