Soil-Water-Plant Relationship: Water requirement of crops; consumptive use and evapotranspiration; measurement of infiltration, soil moisture and irrigation water infiltration.
Tensiometer installed in the soil measures
Options:
(A) osmotic suction of soil moisture
(B) soil permeability
(C) soil moisture content
(D) capillary potential of the soil
Official Answer Key:
D
Step-by-Step Solution & Explanation
A tensiometer consists of a porous cup connected to a vacuum gauge/manometer; it directly measures the soil-water matric (capillary) potential/tension — the suction the soil exerts on water — not the volumetric moisture content itself, not permeability, and not osmotic (solute-related) suction. Answer: (D) capillary potential of the soil.
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