Soil Horizons
What order do the soil horizons come in?
O,A,E,B,C,R
What is structure less soil called?
Massive
What are the three groups of minerals?
Igneous, Sedimentary, and Metamorphic
What is it called when you grow cultivated crops in strips?
Strip cropping
How many capability classes are there
8
What horizon is commonly called subsoil?
The B Horizon
What are the 2 types of glacial drift?
Glacial Outwash and Glacial Till
What is a Metamorphic rock?
A igneous or sedimentary rock expose to heat and or pressure to radically change their characteristics
What is the practice of tilling on a nearly level grade following the curves of the terrain
Contour Farming
Soils in this class have some limitations that reduce the choice of plants or require moderate conservation practices, What class is it?
Class II
What is the transition layer between soil and parent material called?
The C Horizon
What are the soil factors of formation?
Climate, Organisms, Relief, Parent Material, and Time (CLORPT)
What are examples of extrusive igneous rocks?
Scoria, Basalt, and Tuff
What is it called when permanent vegetation is planted to filter out the sediments of rainwater runoff?
Filter Strips
Soils in this class have severe limitations that reduce the choice of plants or require special conservation practices, or both. What class is it?
Class III
What horizon is commonly called topsoil?
The A Horizon
What is the capacity of a soil to adhere to different objects?
Stickyness
What are some examples of metamorphic rocks?
Gneiss, Schist, Marble, and Slate
What is a individually designed channel running along a hillside called?
Diversion
What are the capability classes unsuitable for cultivation?
Classes V, VI, VII, VIII
What Horizon is bedrock?
The R Horizon
What is the degree to which a reworked soil can be permanently deformed without rupturing?
Plasticity
What are the minerals of prime importance in soil development?
Feldspars, Amphiboles and Pyroxenes, Micas, Silicas, Iron Oxides, and Carbonates
what is it called when you plant different crops in reoccurring succession in the same fields as crop rotation?
Sod Based Rotation
Soils in this class have a 15 to 25 percent slope. What class is it?
Class VI