BIOLOGY -CH14

What is type A soil called?
a)Weathering rock
b)Subsoil
c)Top soil
d)Bedrock soil

C. Top soil
What 3 components are found in soil horizons?
- Sand
- Clay
- Loam
What are the pros and cons of sand?
- Plenty of airspace
- Low in water absorption
What are the pros and cons of clay?
- Low airspace
- Binds minerals well
What are the pros and cons for loam?

Contains adequate amount of sand, clay and silt. Best for growing plants.
Name 3 elements found most common in soil.
- 1) Nitrogen 5%
- 2) Phosphorus 15%
- 3) Potassium 5%
(Ammonium Sulfate)
What happens to the soil when plant growth increases?

C) depletes nutrients

Plants absorb all of the soil's nutrients, therefore the soil in that region will have slower plant growth.
Inorganic fertilizers in agriculture can:
- A) provide nutrients in readily forms(ions); can be controlled and fed to different crops
- Think of it as feeding inorganic chemicals to plants.
Organic fertilizers such as manure and compost are better for soil composition. The downside is
- B) Minerals are not immediately dispersed in organic fertilizers.
- Because there is less leeching

Author

purplebird1

9809

Card Set

BIOLOGY -CH14

Description

Soil and Nitrogen

Updated

2010-03-10T02:24:43Z

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