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Soil and Land-F2011-KEY2

Soil and Land-F2011-KEY2 - oven dry soil mass/soil volume(p...

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Soil and Land 10 points PLNT 1213 Name: KEY FALL 2011 CWID: ______________________ Seat number: _________________ Section: __________________ Read Chapter 3. Answer the following questions before class . 1. Name the five factors of soil formation. Parent material, climate, organisms, topography, time (p. 54) 2. What is a soil profile? Draw a soil profile and label the six master horizons. Define which horizons are considered surface horizons and which are considered sub-surface horizons. Profile- vertical cross section of a soil through all its horizons (p.58) O and A- surface horizons E-R subsurface horizons 3. What texture would a soil be classified with the following percents? (Use texture triangle p. 62) Sand- 30%, Silt-60%, Clay-10%: Silt Loam Sand-50%, Silt-20%, Clay-30%: Sandy clay Loam 4. What is the best land available for a specific enterprise called? Prime farmland (p. 85) 5. Give the following equations
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