Soil profile

Question 1

What is pedogenesis?

Answer 1

Formation of soil. Combined effect of physical, chemical, biological, and anthropogenic processes on soil parent material, in which horizons are formed.

Question 2

Why do horizons occur?

Answer 2

Due to weathering. Percolation and illuviation

Question 3

Which horizons consist of the solum?

Answer 3

A and B

Question 4

what is A and B horizon on top of?

Answer 4

parent material

Question 5

A horizon is referred to as?

Answer 5

top soil

Question 6

B horizon is referred to as?

Answer 6

sub soil

Question 7

C horizon is referred to as?

Answer 7

regolith

Question 8

What is the regolith composed of?

Answer 8

weathered soil material on the earth’s surface or loose earth materials above solid rock

Question 9

What is a “pedon”?

Answer 9

3 dimensional body that depicts soil characteristics

Question 10

Factors for soil horizon development

Answer 10

1) addition
2) removal
3) transfers
4) transformations

Question 11

Describe Oi horizon

Answer 11

vegetation is visible to naked eye, freshly fallen litter

Question 12

Describe Oe horizon

Answer 12

litter undergone advanced stage of composition. Unfermented stage

Question 13

Describe Oa horizon

Answer 13

any form of matter can’t be recognized with naked eye. humus layer