1. Soil physical properties are influenced by _______

 All of these

 Clay minerals

 Organic matter

 Moisture conditions

2. Soil physical properties significantly affected by management practices include _______

 Soil color

 Soil porosity

 Soil structure

 Soil structure and porosity

3. Soil structure plays a key role in _______

 Soil erosion

 Both soil fertility and erosion control

 Soil color

 Soil fertility

4. Permeability of soil directly depends on _______

 Degree of saturation

 All of these

 Void ratio

 Grain size

5. In the Munsell system, hue “10” corresponds to _______-associate hue

 Gray

 Yellow

 Black

 Red

6. Addition of organic matter to soil generally _______ bulk density

 Increases

 First increases and then decreases

 Has no effect

 Decreases

7. Which factor has the least effect on soil permeability?

 Pore size

 Soil color

 Texture

 Soil structure

8. Plant-available water is held between _______

 Hygroscopic coefficient only

 Field capacity only

 Saturation and wilting point

 Field capacity and permanent wilting point

9. The property that allows water to pass through soil pores is called _______

 Capillarity

 Consistency

 Permeability

 Porosity

10. Soil porosity is inversely related to _______

 Soil color

 Bulk density of soil

 Soil pH

 Temperature

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