and monitoring the change soil moisture in the profile. A relatively low rate of change indicates when macropore drainage ceases, which is called Field Capacity; it is also termed drained upper limit (DUL).

Lorenzo A. Richards and Weaver found that water content held by soil at a potential of -33 kPa (or -0.33 bar) correlate closely with field capacity (-10 kPa for sandy soils).

Criticism

This concept is criticized. Field capacity is a

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