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Unformatted text preview: kPa. Volumetric water content = gravimetric water content x bulk density. 2. How much plant available water does 1 ft of this soil hold? Plant available water = field capacity  permanent wilting percentage (using volumetric water contents): 35.1  10.4 = 24.7%. This means that 1 foot of soil holds 0.247 feet or 2.96 inches of available water. 3. What is the porosity of this soil (%)? The easy way to answer this is to say that, at saturation, all pores are filled with water, so the porosity of this soil is 45.5%. You can also calculate it based on the bulk density and the assumption that particle density is 2.65 g/cm . 3...
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This test prep was uploaded on 04/03/2008 for the course SWES 200 taught by Professor Walworth during the Spring '08 term at University of Arizona Tucson.
 Spring '08
 Walworth

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