1. Quiz 7 Answers
1. Soil A has a Ksat value of 8 cm/h, Soil B has a Ksat value of cm/h, and Soil C is shallow and rocky and has a Ksat value of 3 cm/h.
a. which soil would be more suitable for agriculture? (1)
Soil A
b. which soil would be more suitable for wastewater lagoon lining? (1)
Soil B
2. Name and describe three potential fates of water after precipitation on the soil surface. (3)
+surface runoff: water does not infiltrate, runs over ground surface, picking up dissolvable
pollutants or soil (erosion)
+infiltration: movement of water into soil +drainage: water moves through soil profile and out of root zone (leaching)
+evaporation: water vaporizes directly from soil to air
+transpiration: water is taken up by plant, used in plant metabolism, and is released through leaves
+percolation: water moves downward into soil profile
+soil storage: water remaining in soil due to matric potential
+capillary rise: water movement back into profile from water table during
periods of dryness
3. What hydraulically significant properties should a prime site for agriculture include? (2)
+level, not too sloping
+well drained
+deep and permeable
+moderate infiltration rates
+no impeding horizons
+ample water storage capacity
4. Use a diagram to explain the difference in water content at field capacity and at the permanent wilting percentage. (3)

2. Classification of Soil Water

3. Michael J. Singer and Donald N. Munns Soils: An Introduction, 6e

4. Figure 6.38

6. Soil Organisms and Ecology
Chapter 11

7. Table 11.1

8. Figure 11.1

11. Michael J. Singer and Donald N. Munns Soils: An Introduction, 6e

12. Figure 11.23