What is Irrigation Efficiency?
Irrigation Efficiency indicates how effectively the applied irrigation water is used by the crop. Losses occur due to runoff, deep percolation, and evaporation.
Standard Formula
Irrigation Efficiency (%) = (Water stored in root zone / Water applied) × 100
Where:
• Water stored = Effective water available to crop (mm)
• Water applied = Total irrigation water supplied (mm)
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Typical Efficiency Ranges:
• Surface irrigation: 35–60%
• Sprinkler irrigation: 60–75%
• Drip irrigation: 80–95%
• Surface irrigation: 35–60%
• Sprinkler irrigation: 60–75%
• Drip irrigation: 80–95%
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