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Flashcards in last soils quiz Deck (20):
0

What is t value?

Soil rate if formation. Erosion should never exceed this, but often does

1

What are the 3 mechanics of water erosion

Detachment, transport, and deposition

2

4 types of water erosion

Sheet
Rill
Interril

3

Sheet erosion between regularly spaced rills

Interior erosion

4

Delivery ratio

Soil delivered divided by soil eroded

5

Name 2 instances where delivery ratio is low

Gentle slopes, large watersheds

6

R

Rainfall erosivity

7

K

Erodibility

8

What types if soil have high k?

Silt, sand, expansive clay

9

LS

Length and steepness if slope

10

C

Cover and management factor
.1 perennial vegetation
1 bare soil

11

Practices of conventional tillage

Primary tillage - plowing
Moldboard plow

12

Secondary tillage

Disking or harrowing for seed bed

13

Tertiary tillage

Smooth soil or remove weeds

14

P

Erosion control practices

15

Name 4 erosion control practices

Contour tillage
Contour strip cropping
Terrace systems
Grassed waterways

16

3 mechanics of wind erosion

Saltation
Soil creep
Suspension

17

Saltation

Particles moving across ground in short bounces

18

Soil creep

Larger particles rolling and sliding along surface

19

Suspension

Particles taken up into the atmosphere