double ring infiltrometer

infiltrometer is used for measure infiltration rate of soil

1. Double ring infiltrometer Presented by Kishan Kumar m.sc. (Ag.) Roll no. 120116015 An presentation on

2. Content Infiltration & infiltration rate Infiltration rates for various soil types Double ring infiltrometer Material required Method References

3. Infiltration & infiltration rate INFILTRATION REFERS TO THE ENTRY AND DOWNWARD MOVEMENT OF WATER IN TO THE SOIL SURFACE. The infiltration rate is the velocity or speed at which water enters into the soil. It is usually measured by the depth (in mm) of the water layer that can enter the soil in one hour.

4. INFILTRATION RATES FOR VARIOUS SOIL TYPES Soil type Basic infiltration rate (mm/hour) sand less than 30 sandy loam 20 - 30 loam 10 - 20 clay loam 5 - 10 clay 1 - 5

5. Double ring infiltrometer Infiltration of water into the soil can be determined by a simple instrument called Double ring infiltrometer . The cylindrical ring infiltrometer consist of single metal cylinder. These cylinders are partially inserted into the ground and water is filled up to a margin inside the cylinder and after that the speed of penetration of water is measured with respect to the time and depth of penetration of water inside the cylinder.

6. MATERIALS required Cylindrical ring (one with 30cm and another with 60 cm diameter.) Wooden piece (to drive the cylinder inside the soil ) Hammer (to dig the cylinder inside the soil without any disturbance in the soil surface) Measuring bucket Measuring jar (2lt) Metal plate Stopwatch (to know the time interval in which infiltration has to be measured ) measuring rod 300 mm (the amount of water penetrate inside the soil within a specific time interval ) Cover & plastic sheet Wash cloths.

7. method

8. reference Champatira , A. Balmuri , V. , Patra ,K. C.,Sahoo , M.M. . Standard Test for Determination of Infiltration Rate of Soil Using Double Ring Infiltrometer, http://www.fao.org/docrep/s8684e/s8684e0a.htm date on 01/4/2017