1. Soil Conservation

2. How do we use the land to change the land?
Mining
Agriculture – crops, pastures for animals
Development – the construction of homes, offices, stores, roads etc.

3. How can soil be lost or damaged?
Exhausted – soil loses fertility because crops are planted year after year.
Polluted – mining, chemical spills, HUMANS
Erosion – wind, water
Land Degradation (aka desertification) – a once wet area, undergoes drought conditions OR grazing animals OR cutting trees

4. Soil Damage water
Rills

5. Soil Damage water
Rills

6. Soil Damage water
Gully

7. Soil Damage – Wind Erosion Dust Bowl

8. What is soil conservation?
Soil conservation is the management of soil to prevent destruction.
Contour Plowing
Crop Rotation
Terracing
No-Till Farming
Windbreaks
Cover Crop

10. Contour Plowing Plowing fields along curves of SMALL slopes

11. Terracing
Changes one field into a series of smaller, flatter fields STEEP slope

12. Terracing
Changes one field into a series of smaller, flatter fields STEEP slope

13. No-Till Farming Dead weeds and stalks are left in the ground from year to year

14. Cover Crops- crops that are planted between harvests to replace certain nutrients and reduce erosion.

15. Crop Rotation Plant different crops in a field from year to year

16. Windbreak Trees planted along the edge of a field

17. HOME/INDUSTRIAL METHODS

18. Home Methods
Mulch or pine straw keeps the soil covered and keeps water or wind from eroding the soil

19. Home Methods
Silt fences help keep soil from washing away during construction

20. Home Methods
Retaining walls keep soil from washing down a slope

21. Home Methods
Watering bare soil to prevent rain erosion or wind erosion

22. Home Methods
Covering the ground with plants or rocks prevents erosion

23. Grammy and Pa wrote to me asking for help
Grammy and Pa wrote to me asking for help. This is a picture of their field. They have to stop erosion or they will go bankrupt. Please give them three techniques to help save their farm.

24. BOGGLE REVIEW GAME 2 minutes Study your notes
2 minutes Record ANYTHING you remember about soil
2 minutes Share with your partner. Add new information to your list.
2 minutes Leave your partner. Compare with another student. Receive a point for each fact you have that the other student does not have.
2 minutes Add up your score. Share in a large group facts for which you got points.