Soils Flashcards
1
Q
Anion
A
Negatively charged soil
2
Q
CEC
A
Cation exchange Capacity
Ability of soil to hold nutrients.
Finer the soil the higher the CEC
3
Q
Cation
A
Positive charged soil
4
Q
Clay properties
A
Size: 0.002 mm
5
Q
Silt properties
A
Size: 0.002-.05
6
Q
Sand Properties
A
Size: 0.05-2.0mm
7
Q
SOM
A
- Provides source of nutrients
- increases water holding capacity
- increases CEC
Made up of active and resistant fractions.
- active: microorganisms
- resistant: humus-old material that doesn’t break down fast
8
Q
Water holding capacity
A
Sandy soils have higher water filtration rates and lower water retention than finer soils.
