Abstract
Abstract A Typic Ustochrept sandy loam was dried under constant evaporation (Eo) of 4, 8, and 16 mm/day. The soil dried more uniformly with depth under lower than under higher Eo. Downward movement of isohydral fronts could be adequately described by equations of the type, D = a + b t0.5 (where ‘D’ is the depth of isohydral front in cm, Y is the drying time in days and ‘a’ and ‘b’ are constants). Rates of their advance were influenced by the Eo and water content of the front. Higher Eo caused earlier deviation of the cumulative evaporation (CE) from the cumulative Eo. Equations of the type, CE = m tn (where ‘t’ is the drying time in days and ‘m’ and ‘n’ are constants), gave an excellent fit for all the three Eo's. Falling‐rate stage evaporation rates were sensitive to Eo during its earlier stages.
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