Crops Pane

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This pane is on the Farm Crop Properties dialog box.

This pane is where the names of the crops are set and where crop properties that do not vary with time are specified. The properties of each crop are defined on one row of the table. The columns on the table depending on the choices the modeler has made on the FMP: Farm Process Pane of the MODFLOW Packages and Programs dialog box.

The first two columns are always present. The first column, Crop ID, is assigned automatically. The next column, Crop Name, is used to identify the crop throughout ModelMuse. The Crop Name will be used to define a global variable that can be used in assigning the spatial distribution of the crops and to identify the crop to which an on-farm efficiency is being assigned.

If water stacking is selected for IDEFFL, the next column will be for IFALLOW which determines whether or not a can be fallowed. IFALLOW must evaluate to True or False. If IFALLOW is true, the crop can be fallowed. Otherwise it can not be fallowed. Pecan trees are an example of a crop that can not be fallowed.

If Concept 1 is selected, the next 4 columns (PSI(1), PSI(2), PSI(3), and PSI(4)) will be negative or positive values of pressures head that control how the potential transpiration varies with pressure head. If the pressure is too high or two low, transpiration drops to zero because of anoxia or wilting. In between, there is a range of pressure heads over which the potential transpiration is at a maximum.

If Rooting depth (IRTFL) is set to Calculated (3), or Consumptive use (ICUFL) is set to Calculated (3), or Precipitation (IPFL) is set to Spatially distributed (2), the additional columns will be present. See Schmid and others (2006) p. 47 and Schmid and Hanson (2009) p.17 for more information about what they represent. These data are used to calculate Growing Degree Days, Cumulative Growing Degree Days, Crop Coefficients, Crop Evapotranspiration, and Root Depths or to specify irrigation. The additional columns will be the following.

Columns

Used for calculating

•Base Temperature (BaseT)

•Minimum Cutoff Temperature (MinCutT)

•Maximum Cutoff Temperature (MaxCutT)

Growing Degree Days

•Coefficient 0 (C0)

•Coefficient 1 (C2)

•Coefficient 2 (C3)

•Coefficient 3 (C4)

Cumulative Growing Degree Days

•Beginning Root Depth (BegRootD)

•Maximum Root Depth (MaxRootD)

•Root Growth Coefficient (RootGC)

Root Depths

•Irrigated (inverse of NONIRR) (True/false)

Irrigation

Irrigated must evaluate to True or False. If Irrigated is True irrigation will be applied.