Soils Exam 2 Review

2. An area saturated with water, either permanently or seasonally, that supports distinct ecosystems.
5. lime A material used to neutralize soil acidity and improve fertility.
9. drainage The removal of water from the soil below the surface to improve plant growth.
11. rotation The practice of growing different crops in succession to improve soil health.
13. cropping Planting crops to cover soil, prevent erosion, and improve soil health.
15. fertility The ability of soil to provide essential nutrients to plants.
16. The process by which water enters the soil surface.
19. A condition of low oxygen levels in water, often caused by eutrophication.
21. tillage A farming practice that reduces soil erosion and water loss.
23. Programs where government agencies assist growers by covering part of the expense for conservation practices.
24. Nutrients required in small amounts for plant growth.

1. soil Soil that contains a high concentration of soluble salts, which can harm plant growth.
3. testing A method of analyzing plant tissue to determine nutrient deficiencies.
4. irrigation A method of watering plants by delivering water directly to the roots in small, controlled amounts.
5. The process by which particles adhere to a surface.
6. capacity The soil's ability to resist changes in pH.
7. Water that flows over the land surface rather than infiltrating the soil.
8. elements Nutrients required by plants for normal growth and development.
10. buffer A vegetative area designed to intercept pollutants and reduce erosion.
12. The enrichment of water bodies with nutrients, causing algal blooms.
14. exchange capacity The total capacity of soil to hold exchangeable cations.
17. sample A soil sample made by mixing subsamples from different areas.
18. The removal of excess water from soil.
20. carbonate equivalent A measure of the ability of a liming material to neutralize soil acidity.
22. erosion The formation of small channels on a slope by running water.