Furrow

Value

Meaning

Off

No furrow structure is assumed. All water will infiltrate into the uppermost soil layer.

Irrigation

Furrows are present in the field and they collect irrigation water that is partitioned between the uppermost layer and the second layer of the soil depending on the value of the parameter finfbypass. Note that the degree of irrigation water that reaches the soil and thereby the furrow is governed by the parameter, isfrac, which is the irrigation fraction. Only isfrac = 1 allows all irrigation to reach the furrow directly.

I.+Precipitation

The same as above but in this case also all the precipitation water is collected in the furrow and will be partitioned between the two uppermost layers according to the finfbypass parameter.