1996 District 7 Rural Soils Test

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1996 District 7 Rural Soils Test

True/False

Indicate whether the sentence or statement is true or false.

1.

Contour strips should be used on land with a 6-18 percent slope.

2.

Topsoil and subsoil are of equal importance in the soil.

3.

Soil texture has little effect on water and plant nutrient holding capacity of the site.

4.

Organic matter lightens the color of topsoil.

5.

Soft shale does not affect root growth.

6.

Percent of slope is always measured in the steepest reflief of the site.

7.

Slope can be defined as the inclination of the land surface from the horizontal.

8.

The plow layer is the upper seven inches.

9.

Contouring is always needed on cropland with 2-6 percent slope.

10.

Soil tilth refers to its organic content.

11.

Plant roots require favorable balance of air and water for optimal growth.

12.

No-till with crop residue should be used on class six land.

13.

Erosion can occur on land with a one percent slope.

14.

Permeability refers to the ability of a soil to evaporate water.

15.

Soils that contain many large stones or massive bedrock are refrerred to as heavy soils.

16.

Three feet of rise or fall in 100 feet of horizontal distance would represent a 30 percent slope.

17.

A loamy soil texture forms a long, thin ribbon when pressed between the thumb and forefinger.

18.

Class VII land should be planted to adapt trees.

19.

Surface drainage is usually necessary on very poorly drained soils

20.

Of the three (3) primary soil particles, sand is the largest.

21.

Gully erosion is characterized by shallow channels cut into the surface layer of the soil.

22.

The color of moist subsoil is the best indicator of air and water movement in the subsoil.

23.

When aeration is restricted. mottled colors form in soil matrix.

24.

The master Soil horizon designated by the upper case letter B in the substatum.

25.

After soil is placed in a given land capability class, there is no further classification needed.

True/False Indicate whether the sentence or statement is true or false.
	1.	Contour strips should be used on land with a 6-18 percent slope.
	2.	Topsoil and subsoil are of equal importance in the soil.
	3.	Soil texture has little effect on water and plant nutrient holding capacity of the site.
	4.	Organic matter lightens the color of topsoil.
	5.	Soft shale does not affect root growth.
	6.	Percent of slope is always measured in the steepest reflief of the site.
	7.	Slope can be defined as the inclination of the land surface from the horizontal.
	8.	The plow layer is the upper seven inches.
	9.	Contouring is always needed on cropland with 2-6 percent slope.
	10.	Soil tilth refers to its organic content.
	11.	Plant roots require favorable balance of air and water for optimal growth.
	12.	No-till with crop residue should be used on class six land.
	13.	Erosion can occur on land with a one percent slope.
	14.	Permeability refers to the ability of a soil to evaporate water.
	15.	Soils that contain many large stones or massive bedrock are refrerred to as heavy soils.
	16.	Three feet of rise or fall in 100 feet of horizontal distance would represent a 30 percent slope.
	17.	A loamy soil texture forms a long, thin ribbon when pressed between the thumb and forefinger.
	18.	Class VII land should be planted to adapt trees.
	19.	Surface drainage is usually necessary on very poorly drained soils
	20.	Of the three (3) primary soil particles, sand is the largest.
	21.	Gully erosion is characterized by shallow channels cut into the surface layer of the soil.
	22.	The color of moist subsoil is the best indicator of air and water movement in the subsoil.
	23.	When aeration is restricted. mottled colors form in soil matrix.
	24.	The master Soil horizon designated by the upper case letter B in the substatum.
	25.	After soil is placed in a given land capability class, there is no further classification needed.