Flashcards in Nature of Soils Deck (13)
Characteristics of soils?
mineral matter, organic matter, water and air
Amount of textural classes in soil texture
60% primarily sand
What are the 2 soil textures?
Fine Earth Fraction-Clay Silt Sand
Coarse Fraction-Gravel Cobble Stone Boulder
Factors that affect soil?
Other characteristics of soil?
structure, organic matter, living organisms, aeration, moisture content, pH, and fertility
The ability of water and air to pass through soil
5 major factors of soil formation responsible for the kind of soil that develops in an area, the rate, and extent
Climate, parent material, organisms, topography, and time
The acidity, neutrality, and alkalinity of soil reaction
4.5-7 in humid regions
7-9 in arid regions
most vegetation grows in soils between 6 and 7
A cross section view of the various horizons characterized by a specific thickness, texture, structure, and chemical composition
Each horizon has specific thickness, color, texture, structure and chemical composition. How many soil horizons are there?
The most dominant factor of soil formation?
Climate (temperature and precipitation which influence weathering)
The unconsolidated material from which solids form