Soil Texture & Permeability
Land Features & Erosion
Land Capability & Problems
Conservation Practices
Major Factors
100

The term for soil that is gritty to the touch.

What is sandy?

100

The thickness of the surface layer and subsoil that is easily penetrated by roots.

What is soil depth?

100

The land capability class for "deep" soil, which is 40 inches or more.

What is Class I?

100

A recommended conservation practice for all cropland.

What is returning crop residue to the soil?

100

According to the guide, greater than 3000 ft , more than 30% cover, less than 50 degrees F is considered a major factor.

What is elevation and climate?

200

The texture of soil that is described as sticky when wet, slimy, and oily.

What is clayey?

200

The percent range for a "gently sloping" piece of land.

What is 3 to 7 percent?

200

The land class for a site with very severe erosion.

What is Class VII?

200

You should check this practice if the pH is below 6.0 or above 8.0.

What is applying lime or soil amendments?

200

This factor is considered a major problem if the soil depth is less than 20 inches.

What is soil depth?

300

The permeability rate in inches per hour for very clayey soil.

What is less than 0.2 inches per hour (slow)?

300

The visual rating for soil loss that is calculated as 25-75% loss.

What is moderate erosion?

300

The land capability class for land used for pasture.

What are Class V, VI, or VII?

300

A recommended conservation practice for pastureland that helps with erosion control

What is managing grazing?

300

This is a major factor if it occurs with 20 mph wind or 40 mph gusts

What is wind?

400

The soil property that refers to its ability to transmit air and water.

What is permeability?

400

The land condition that is a major factor when it's 8% or more.

What is slope?

400

A major problem if it occurs more often than once every two years.

What is flooding?

400

A conservation practice to use when flooding is a major problem.

What is controlling flooding or constructing dikes and levees?

400

This is considered a major factor when the surface texture is either sand or very clay.

What is surface texture?

500

The two types of soil texture that are considered a problem because they are difficult to cultivate or have poor water-holding capacity.

What are very clayey and sandy?

500

How to calculate the percentage of soil loss or erosion.

What is "original topsoil minus present topsoil, divided by original topsoil, multiplied by 100"?

500

A salinity level greater than 0.2% is considered a major problem.

What is salinity?

500

The conservation practice you would recommend for Class VIII land.

What are planting adapted trees, protecting trees from burning and grazing, or wildlife habitat improvement?

500

This factor is considered a major problem if the soil salinity is greater than 0.2%.

What is salinity?