This pane is on the MODFLOW Features tab of the Object Properties dialog box.
IRRIGATION Determines if crop receives applied water (irrigation) to meet Consumptive Use (CU) and the irrigation efficiency (OFE).
0 Indicates that it is not irrigated
>0 Indicates crop is irrigated and the number is the irrigation type. The names of the irrigation types are saved as global variables so the irrigation type can be specified by name or by an integer value.
A global variable is created for each irrigation type defined in the Farm Irrigation Types dialog box. It is recommended that those global variables when specifying Irrigation.