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Soil Survey Map Reading. Discussion and Activity Environmental Science. Soil As A 3- Phase System. Soil Particles Water Films and Trapped Gases in Pores Solids and Aggregates. Water is the Driving Force. Water Movement affects: A. Detachment B. Transport C. Deposition. - PowerPoint PPT Presentation
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SOIL SURVEY MAP READING
Discussion and ActivityEnvironmental Science
Soil As A 3- Phase System Soil Particles Water Films and Trapped Gases in Pores Solids and Aggregates
Water is the Driving Force
Water Movement affects: A. Detachment B. Transport C. Deposition
Types of Erosion Affecting Soil Quality
Rill and Inter-rill
Gully (most aggressive)
Splash
Gully Erosion
Inter- rill Erosion
Splash Erosion
How Does Soil Form?
Physical and Chemical Weathering
Wind and Water Mixtures and Solvents
What is Soil Composed Of?
Rocks and MineralsLiving Organisms = worms, bacteria, insects, fungiDecayed Organics= plants and animalsAggregates= rocks and pebblesMoistureTrapped Gases= air, methane, others
Types of Soils
LOAM is bestFor
SOIL FERTILITY
Soil Survey Activity
Using the Colored General Soil Map and Legend, describe the soils
Found in a five mile radius around each that follows:
A. Sleepy Eye
B. B. Searles
C. C. Comfrey
D. One of your choice
Use of Tables
Use the Tables Section starting on page 114. Answer the following:
a. What trees grow in “Webster” Soils?
Soil Textures and Composition
What kind of soil doe Cobden have? Find the soil textures and composiition.
Choose another location of your homestead or of a classmate’s.
Understanding Symbols
Symbol 495 stands for what soil type?
Select another symbol and meaning of your choice.
Give the symbols for soils in a five mile radiusAround Sleepy Eye.