Xylematic Water Potential is a method used to measure the “water tension” into Xylem (water and nutrients vascular system).
A low Xylematic Water Potential means that the plant is less stressed by the lack of water. With the same amount of energy received, plants transpire more, meaning that the nutrients uptake and metabolic activity are increased.
The effect of CW-DI21 in soil has a direct impact on plants’ Xylematic Water Potential and therefore on plants’ metabolism.
In that case, Xylematic Water Potential is closer to 0 on the treated plant, meaning that it is less stressed by the lack of water.