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PLNT 1213 Exam 4 questions with complete solutions graded A+ Already passed
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PLNT 1213 Exam 4 questions with complete solutions graded A+ Already passed
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PLNT 1213 EXAM 4What is the bulk density of a typical soil? - correct answer ✔✔1.3 g/cm3
This soil horizon is a zone of accumulation. - correct answer ✔✔B horizon
If the sand percentage is 60% and the silt is 30%, what is the soil texture? - correct answer ✔✔Sandy
loam
If the silt is 30% and the clay is 60%, what is the soil texture? - correct answer ✔✔Clay
What is the typical percentage of mineral material in a soil? - correct answer ✔✔45%
If you have a soil core that is 110 cm3 and weighs 180 g, what is the bulk density? - correct answer
✔✔1.64 g/cm3
What is the soil structure? - correct answer ✔✔Platy
What is the soil structure? - correct answer ✔✔blocky
Select all of the following that are factors of soil formation. - correct answer ✔✔Time
Parent Material
Climate
What environmental factor has a big impact on what soil orders are formed as you move west to east in
the United States? - correct answer ✔✔rainfall/
moisture
What are the three soil particle sizes? - correct answer ✔✔Sand, silt, clay
, These soils are agronomically important and are primarily found in grasslands. - correct answer
✔✔Mollisols
What are the five factors of soil formation? - correct answer ✔✔Time
Parent Material
Climate
Biota
Topography
If you have a crop field next to a river, what soil formation factors would have the biggest influence? -
correct answer ✔✔Parent material
Topography
What is a benefit of not building on sand. - correct answer ✔✔stability
Think of some problems for plant or animal agriculture if you have a soil that is very high in clay content.
- correct answer ✔✔With very high clay content it would make drainage be slower, meaning it will hold a
lot of water and that might make it difficult to work
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Using the pH and nutrient scale, either from the video/online/or your notes, what pH range do you want
to have the majority of the essential elements available? - correct answer ✔✔6.0-7.0
Why does the western portion of Oklahoma typically have higher pH values? - correct answer ✔✔Low
rainfall and high Calcium Carbonate amounts
Match the element to whether it is a macronutrient or micronutrient. - correct answer
✔✔Micronutrient:
-Copper
-Manganese
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