A mercury manometer type tensiometer has been installed in a mustard field. The manometer shows a Hg reading of 55 cm above the Hg level in the manometer cup at a particular time of observation which is equivalent to 0.64 atmospheric tension. The level of mercury in the cup is 10 cm above the ground. Calculate the soil depth at which the tensiometer has been installed. The density of Hg is 13.6 ???3⁄.

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Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.