Not AvailableA statistical assessment of curve fitting to soil water retention curve has been
carried out for two different types of soils viz., Kharagpur sandy loam soil (four
layers) and Black clay soil of Akola. The closed form equation describing soil
water retention function of van Genuchten [VG (m, n) and VG (n)] and Brooks-
Corey (BC) was fitted using RETC software and detailed statistical analysis
was carried out to compare their performance. Results revealed that all the three
models were found to perform reasonably well. The statistical analysis
performed to discriminate the models such as R , AIC, t-value and RSS had
showed a little difference among the models used for comparison. However,
considering the relative ease at which the computation of hydraulic properties
can be performed and the practical situation that can be accommodated, VG(n)
is the best model among all the three models. This represents a simple closed
form equation that can be derived to express the hydraulic conductivity function
as compared toVG(m, n).Not Availabl
