The lower the soil water potential the more energy needed by the plant (i.e. the harder it is for a plant to get the water it needs).
(The lower the soil water potential the more energy; needed; by the plant) (it; is; for a plant; to get the water) (the water; needs; it)
The lower the soil water potential the more energy it the water
needed is needs
by the plant
for a plant to get the water
it