4.2 Vocab - Intro to Ag

Aeration

• Introducing air into soil

• Heating a substance to a high temperature
• Mixing two substances together
• Removing air from soil

Buffer

• Resists changes in soil

• Catalyst in soil

• Hard drive in soil

• Memory in soil

Buffering Capacity of Soil

• Amount of water retention in soil

• The color of the soil
• The number of earthworms in the soil
• ability of a soil to resist a change in its hydrogen-ion concentration

Caustic

• gentle
• corrosive
• soothing
• mild

Filtration

• Separating solid from solid

• Separating solid from liquid

• Separating liquid from liquid

• Separtating gas from liquid

Horizon

• Soil layer

• soil structure

• capacity of rock

• Underground

Internal Drainage

• Underground

• Permeability

• External

• Surface

Loam Soil

• 50% sad, 50% clay

• 52% sand, 28%silt, 20% clay

• 32% sand, 60% silt, 8% clay

• 100% bedrock

Ped

• Surface of soil

• Vertical section of soil

• Extent of voids or openings

• Unit of Soil Structure

Permeability

• Inability of a material to allow liquids or gases to pass through it
• Ability of a material to repel liquids or gases
• Ability of a material to change color when in contact with liquids or gases
• Ability of a material to allow liquids or gases to pass through it