1. Soil Basics GPH 111

2. In a nut shell, what are soils?

3. Sierra Estrella Mountains and the Gila River Where do you think soils tend to form?

4.  Erosion  Erosion – Soils are unprotected during periods where they remain fallow and without vegetative cover, leading to increased erosion Irrigable Soil Loss Through…

5.  Erosion  Erosion – Soils are unprotected during periods where they remain fallow and without vegetative cover, leading to increased erosion

6. Irrigable Soil Loss Through…  Salinization  Salinization – Increase in evaporate minerals over time decreases the usability of the soil for agricultural purposes.

7. Soils Exercise

8. Soil Exercise: The Search for Donny Lebowski Donny

9. Soil Exercise: The Search for Donny Lebowski

10. Breakdown of Soils by Grain Size… Loam - equal parts clay, sand, and silt.

11. Things to Know  Basically, where do soils come from (weathering)  Soils with an equal mix of sand, silt, and clay are termed loams  Be familiar with two types of irrigable soil loss  Basically, where do soils come from (weathering)  Soils with an equal mix of sand, silt, and clay are termed loams  Be familiar with two types of irrigable soil loss Help: Chapter 15