Soil and Land-F2011-KEY2

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

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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 Bulk density:
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Unformatted text preview: oven dry soil mass/soil volume (p. 63) Denitrification: 2NO 3- 2NO 2- 2NO N 2 O N 2 (p.71) Revised Soil Loss Equation: A= RKLSCP (p. 79) Wind erosion equation: E= f(ICKLV) (p. 81) Read the article Water for the People. Answer the following questions before class to prepare for discussion. 6. What was the mean annual rainfall for Mannar in inches (1 mm=0.039 in)? What percent of rainfall is lost to the sea? 900 mm= about 35 inches 40-60% 7. What percent of people in the southern province get water from sources that are considered unsafe? 45% O A E C B R Discuss with your group in class and record the responses : 8. What were your thoughts as you read this article? 9. The article mentions that reduced runoff and promoting infiltration of water can increase the water availability. What are some ways to do this (think about some of the concepts covered in class for agriculture)?...
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Soil and Land-F2011-KEY2 - oven dry soil mass/soil volume...

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