Which irrigation method has the lowest efficiency with about 45% loss?

Which irrigation method has the lowest efficiency with about 45% loss?

• A. Drip Irrigation
• B. Center Pivot Irrigation
• C. Sprinkler Irrigation
• D. Flood Irrigation

Answer: (D)

Efficiency in irrigation is the portion of water applied that actually benefits the crop, reaching the root zone. Flood irrigation sends water across the field surface and infiltrates in a largely uncontrolled way, leading to substantial losses. Evaporation from the wet soil surface, runoff to field edges, and deep percolation beyond the root zone all contribute to a large portion of water not used by the plants. That combination typically results in the lowest efficiency among common methods, often around 55% useful water and about 45% lost, which matches the scenario described. In contrast, drip irrigation delivers water directly to the root zone with minimal surface losses, while center-pivot and other sprinkler systems distribute water more evenly than flood irrigation, reducing losses overall.

Efficiency in irrigation is the portion of water applied that actually benefits the crop, reaching the root zone. Flood irrigation sends water across the field surface and infiltrates in a largely uncontrolled way, leading to substantial losses. Evaporation from the wet soil surface, runoff to field edges, and deep percolation beyond the root zone all contribute to a large portion of water not used by the plants. That combination typically results in the lowest efficiency among common methods, often around 55% useful water and about 45% lost, which matches the scenario described. In contrast, drip irrigation delivers water directly to the root zone with minimal surface losses, while center-pivot and other sprinkler systems distribute water more evenly than flood irrigation, reducing losses overall.