Tutorial: Irrigation Performance Indicators and Water Productivity

We'll calculate now the Yield (kg/ha)

1. In the Indicator Selection dropdown, select Yield.

Formula: Y = HI * AOT * fc * (TBP / (1 - MC))

• Parameters for Oued Hellal:
• MC: 0.15 (Moisture content, dry matter over fresh biomass)
• fc: 1.46 (Light use efficiency correction factor)
• AOT: 0.85 (Above ground over total biomass production ratio)
• HI: 0.48 (Harvest Index)
• Note: These parameters are specific to the type of crops that are grown in the study area. 

2. In the Formula Parameters, select the Total Biomass Production raster (WH_TBP_2022_10_01).

3. Enter the above parameters and name the output file WH_Yield_2022_10_01.

4. Click Calculate Indicator. The output raster will be saved and loaded into QGIS.