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True/False
Indicate whether the sentence or statement is true or false. |
| | 1. | Contour stripes should be used on land with 6-18 percent slope |
| | 2. | Land should be used for woodland or wildlife if it is swampy or frequently flooded. |
| | 3. | A sod waterway is needed to prevent sheet erosion. |
| | 4. | Continuous row cropping can be used ton class one and two land |
| | 5. | No till with crop residue should be used on class six land |
| | 6. | Frequent flooding occurs on land class five. |
| | 7. | Conservation tillage should be used on class one land. |
| | 8. | Contouring is needed on land with 2-6 percent slope. |
| | 9. | The plow layer is the upper seven inches |
| | 10. | Soil tilth refers to its organic content. |
| | 11. | Organic matter lightens the color of topsoil. |
| | 12. | When tile drainage is installed on class two land (by drainage) the land class changed to class one. |
| | 13. | Slope can be defined as the inclination of the land surface from the horizontal |
| | 14. | Percent of slope is always measured in the steepest relief of the site. |
| | 15. | Percent of slope is always measured in the steepest relief of the site. |
| | 16. | Topsoil and subsoil are of equal importance in the soil. |
| | 17. | Erosion channels caused by rill erosion are small enough to be closed by common tillage tools. |
| | 18. | Soil texture has little effect on water and plant nutrient holding capacity of the site. |
| | 19. | Soil depth affect the kind of crop that can be grown. |
| | 20. | Soft shale does not affect root growth. |
| | 21. | Plant roots require a favorable balance of air and water for optimal growth. |
| | 22. | After a soil has been placed in a given land capability class, there is no further classification needed. |
| | 23. | Proper use of management practices which overcome soil limitations can result in a change of land class. |
| | 24. | Substratum is the part of the soil below the plow layer. |
| | 25. | Plant grasses and legumes on class six land. |