Read through and complete the following activity and questions. All questions should be answered and completed labs are due at the end of the laboratory period. No late work will be accepted.
1) What do the subscripts p, r, t, and k indicate when applied to soil horizons? (Refer to red field guidebook)
2) Which master soil horizon or layer is each subscript associated with in soils?
Horizon or layer
3) How does the presence of iron oxides affect soil color?
4) Which horizon (A, E, or B) is usually first to form as the soil develops?