Soil Profile
What horizon is made up mostly of organic matter?
What is the O horizon
What does CEC stand for?
What is cation exchange capacity
It is a scale index of hydrogen.
What is pH?
Soil Texture
What is the relative amounts of sand, silt, and clay particles in soil.
H20 has what charge
What is one positive hydrogen and two negative oxygen charges.
What two soil profiles make up top soil?
What are the O and A horizon
This is the order of the three main soil textures from highest to lowest CEC.
What is clay, silt, and sand?
A soil with a pH of 7.7
What is a soil that is more akaline
Which of the following is not a soil textural class name?
Sand Silt Loam Clay Sandy silt
What is Sandy Silt
Give the definition of adhesion
What is waters ability stick to particles in the soil
In which of the horizons has the process of illuviation most likely occurred?
What is the E horizon
What are immobile nutrients
What is nutrients that will be stuck to cation exchange sites and thus not move.
Soils with these two properties, have high buffering capacity.
What are clay and organic matter?
A sticky, putty-like feel indicates a high percentage of which soil separate
What is clay
Give the definition of cohesion
What is the waters ability stick to particles in the soil
What is a transition horizon?
What is a horizon dominated by properties of one horizon but also have characteristics of another
CEC is measurement of?
What is cations
What is the optimum pH range of corn, soybeans and wheat
What is 6.2-6.8
Soils express characteristics of all three particles
What is loam
Describe percolation using the term gravitational potential
What is the movement of water through the soil through gravitational potential and movement.
What does Ap represent in a soil horizon
What is an A horizon with a plow pan
If our CEC is 10 how many pounds of nitrogen can our crop field hold?
What is up to 100 lbs. of Nitrogen
This fertilizer product causes the soil to get more neutralized or closer to the 7.0 pH
What is limestone
A soil with 45% sand, 20% clay and 35% silt belongs to the ___textural class.
What is sandy loam
What is the movement of water through soil pore space due to its polarity, or the combined forces of adhesion and cohesion.