Setting the Default Daily ET Value
The daily evapotranspiration (ET) value can be calculated by the computer with
information from a weather source or entered in the system manually. In the
event that no other ET value is given for the site, the default value is used. The
default ET value is 0.10 inches per day.
To set the default ET value:
Enter the value (from 0 to 5.00) in the Default ET Value field or use the scroll
buttons on the right of the field to select a value without typing.
Setting the Minimum Daily ET Value
The evapotranspiration (ET) value can be calculated by the computer with
information from a weather source or entered in the system manually. If the ET
for a given day is below the Minimum Daily ET Value, then Irrigation ET will be
set to 0 and the ET value will be postponed until the next day.
To set the minimum ET value:
Enter the value (from 0 to 5.00) in the Minimum ET Value field or use the
scroll buttons on the right of the field to select a value without typing.
Setting the Maximum Daily ET Value
The evapotranspiration (ET) value can be calculated by the computer with
information from a weather source or entered in the system manually. The
Maximum Daily ET Value is the maximum ET that can be applied in one day.
To set the maximum daily ET value:
Enter the value (from 0 to 5.00) in the Maximum ET Value field or use the
scroll buttons to the right of the field to select a value without typing.
Setting the Crop Coefficient
The crop coefficient is the evapotranspiration (ET) adjustment factor for the type
of plant at the site. This adjustment factor is necessary because certain types of
plants require more water than others. The default crop coefficient is 1.0.
To set the crop coefficient:
Enter the value (from 0.00 to 9.99) in the Crop Coefficient field or use the scroll
buttons on the right side of the field to select a value without typing.
Setting Site Properties
4.10
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