Currently, just three major irrigation techniques are distinguished. Their naming is given in a Look-up Table. For each of these techniques, a specific application efficiency is assumed. Furthermore, for drip irrigation, Net Irrigation Requirements (NIR) are calculated in a different way.
Look-up Table IRRIGATION_METHOD :
| CODE | DESCRIPTION | COMMENTS |
|---|---|---|
| 1 | Drip-Irrigation | |
| 2 | Sprinkler-Irrigation | |
| 3 | Surface-Irrigation |