« Water moves in the soil, not only because of gravity but also because of adhesion ». Suction forces make the water moves in the soil. Understanding this is a important first step. The availability, the behaviour,  so the good management of water in the soil are directly related to tension. WaterMovement (W.H. Gardner – 1962)
What is tensiometry ?

Explanations about what tensiometry is, and about the tensiometry
Applications scope

Different fields where tensiometry is usefull, irrigation control in particular
Technical publications
Recherche et techniques

Scientific and technical publications about tensiometry and irrigation