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Light soils can be irrigated successfully across slope up to:
EXPLANATION
Physical, Gravimetric & Aerodynamic Propertie
- Slope Limits for Irrigation in Light (Sandy) Soils:
- Light-textured (sandy) soils have high infiltration rates and low cohesion, making them highly susceptible to sheet and rill erosion during overland flow.
- In surface irrigation systems (such as contour furrows or border strips across the slope), light soils can be irrigated safely across slopes up to 5% without severe scouring erosion.
- Above 5%, pressurized sprinkler or drip irrigation must be adopted.
- Conclusion: 5% (Option 3).
Correct option: (3) 5%
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