Ch 12.1- 12.2 Vocab

3. ______ crops are planted in the off season to reduce soil erosion.
7. ________ material is the base geological material in a particular location.
8. The planting of different crops in mixed arrangements.
10. The providing of water other than precipitation to crops.
12. buildup of salts in the upper soil horizons.
13. Chemicals that kill organisms that attack or compete with plants we value.
14. The continuous mass of solid rock that makes up the Earth's crust.
16. Soil ________ are the distinct layers in a soil profile.

1. Describes the physical and chemical processes that break down rocks into smaller pieces.
2. Soil ___________ is the deterioration of soil and plant growth.
4. When too many animals eat too much of the plant cover.
5. A widespread technique for reducing wind erosion.
6. The loss of more than 10% of soil productivity
9. ______ farming consists of plowing sideways across a hillside.
11. the turning over of soil before planting
15. Soil with a relatively even mixture of the three particle sizes.