DAVIS GroWeatherLink Software - Manual (Page 93)

U S I N G T H E S O F T W A R E
Crop Water Management
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▲ Edit Irrigation Entry
To edit an irrigation entry, double-click on the desired line in the Irrigation
Amt. List. Edit any of the irrigation information and choose OK to save you
changes.
▲ Delete Irrigation Entry
To delete an irrigation entry, select the desired line in the Irrigation Amt. list,
click on the Irrigate button, and then choose Delete Amount from the pop-up
menu. You will be prompted to confirm that you want to delete the irrigation
entry.
K Factors
Crop-specific K factors allow you to calculate more accurate
evapotranspiration amounts by taking into account the different
transpiration rates of different crops and at different stages of
development. When K factors are used to calculate evapotranspi-
ration, it is referred to as ETc. The software will automatically cal-
culate ETc using the K factors you enter and the ETo information
calculated by the station.
The software allows you to enter different K factors for different stages of crop
development. ETc for each day is calculated using the appropriate K factor. For
example, if you enter a K factor of 1.0 for 4-1-96 and a K factor of 1.25 for 4-15-96,
the software uses the 1.0 K factor in calculating ETc for 4-1-96 through 4-14-96
(inclusive). For 4-15-96 and all subsequent dates (until a new K factor is entered
for a date after 4-15-96), the software uses the 1.25 K factor in calculating ETc.
▲ Add K Factor
To add a K factor, click on the K Factor button and choose Add K Factor from
the pop-up menu. The software prompts you to enter an date and K factor.
Enter the appropriate information and choose OK. The software adds the K
factor to the K Factors list.
A DD K F ACTOR
▲ Edit K Factor
To edit a K factor, double-click on the desired line in the K Factors List. Edit
any of the irrigation information and choose OK to save you changes.
▲ Delete K Factor
To delete a K factor, select the desired line in the K Factors list, click on the
K Factors button, and then choose Delete K Factor from the pop-up menu.