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Double ring infiltrometer (Photo U Sydney)
Infiltration rates are typically lower for finer textured soils. Thus, clay soils can have longer irrigation runs than sandy soils and lose less to deep percolation.
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Soil structure
Good soil structure is particularly important in terms of soil aeration, root growth and soil water movement. Infiltration rates can be considered an indirect measurement of soil structure.
Good infiltration can reduce soil erosion by reducing run-off. Basic infiltration rates mm/hr
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Measuring infiltration as an estimate of structure
A simple field method. The infiltration rate is the velocity or speed at which water enters into the soil. Place the top rim of an inverted bucket (with the bottom removed) 2-3 cm into the soil. The bucket has a ruler marked on the inside. Fill the bucket with water and then measure the water height at regular intervals (e.g., 1minute intervals). Calculate infiltration as the change in water height for each time interval. Compare with the numbers in the above Table.
Infiltration can also be measured using a double ring infiltrometer Link or FAO reference Link
Infiltration can also be measured using a double ring infiltrometer Link or FAO reference Link
Photo Michigan Technology