1979 Ohio State Rural Soils Test

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1979 Ohio State Rural Soils Test

True/False

Indicate whether the sentence or statement is true or false.

1.

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

2.

Soil containing a high percentage of sand is known as a coarse textured soil.

3.

Severe erosion has taken place on land where the plow layer or upper 7 inches is mixed original topsoil and 25-75% subsoil.

4.

Class II land is suitable for a moderate cropping system.

5.

Slope refers to the number of feet fall in each 100 feet of horizontal distance.

6.

Mottling in the subsoil above a depth of 16 inches indicates slow air and water movement.

7.

Coarse sand and gravel constitute a restrictive soil layer.

8.

Class IV land is suitable for occasional cropping.

9.

A very shallow soil is 10 to 20 inches to a restrictive layer.

10.

No-tillage cropping is suitable for well drained soils in classes II, III, and IV.

11.

Strip cropping with contour tillage should be used on slopes in the 18 to 25 % range.

12.

Class II soils that have been drained can be row cropped intensively.

13.

The plow layer of a soil may consist entirely of subsoil.

14.

Sheet erosion is caused mostly by the splash from raindrops.

15.

A medium textured soil forms a flexible or firm ribbon which does not break when pressed between the thumb and other fingers.

True/False Indicate whether the sentence or statement is true or false.
	1.	The color of the moist subsoil is the best indicator of air and water movement in the subsoil.
	2.	Soil containing a high percentage of sand is known as a coarse textured soil.
	3.	Severe erosion has taken place on land where the plow layer or upper 7 inches is mixed original topsoil and 25-75% subsoil.
	4.	Class II land is suitable for a moderate cropping system.
	5.	Slope refers to the number of feet fall in each 100 feet of horizontal distance.
	6.	Mottling in the subsoil above a depth of 16 inches indicates slow air and water movement.
	7.	Coarse sand and gravel constitute a restrictive soil layer.
	8.	Class IV land is suitable for occasional cropping.
	9.	A very shallow soil is 10 to 20 inches to a restrictive layer.
	10.	No-tillage cropping is suitable for well drained soils in classes II, III, and IV.
	11.	Strip cropping with contour tillage should be used on slopes in the 18 to 25 % range.
	12.	Class II soils that have been drained can be row cropped intensively.
	13.	The plow layer of a soil may consist entirely of subsoil.
	14.	Sheet erosion is caused mostly by the splash from raindrops.
	15.	A medium textured soil forms a flexible or firm ribbon which does not break when pressed between the thumb and other fingers.