Ag Science 6 Chemical properties of soil

What are the chemical properties of soil?

• Plant-available nutrients

• pH

• Cation exchange

• Flocculation

Cations are..

• positive ions

• negative ions

What is Flocculation?

• The clustering together of soil particles to create larger structures called floccules

• Ability of soil particles (clay and humus) to attract, retain and release cations

• The capacity of a soil to exchange cations between the soil surfaces and soil solution (water)

• Is a measure of the concentration of the hydrogen ions in a solution.

• The spreading of ground limestone on the soil

What is cation exchnage?

• The clustering together of soil particles to create larger structures called floccules

• Ability of soil particles (clay and humus) to attract, retain and release cations

• The capacity of a soil to exchange cations between the soil surfaces and soil solution (water)

• Is a measure of the concentration of the hydrogen ions in a solution.

• The spreading of ground limestone on the soil

What is cation exchnage capacity (CEC)?

• The clustering together of soil particles to create larger structures called floccules

• Ability of soil particles (clay and humus) to attract, retain and release cations

• The capacity of a soil to exchange cations between the soil surfaces and soil solution (water)

• Is a measure of the concentration of the hydrogen ions in a solution.n.

• The spreading of ground limestone on the soil

What is pH?

• The clustering together of soil particles to create larger structures called floccules

• Ability of soil particles (clay and humus) to attract, retain and release cations

• The capacity of a soil to exchange cations between the soil surfaces and soil solution (water)

• Is a measure of the concentration of the hydrogen ions in a solution.

• The spreading of ground limestone on the soil

What soil type ahs the best cation exchange capacity?

• Sandy

• Loam

• Clay

What factors effect the cation exchange capacity of a soil?

• pH

• Soil texture

• Humus content

• Clay content

Which of these ranges is the ideal for plant growth

• 5.5-8

• 6.5-8

• 6.5-7.5

• 5.5-7.5

Which of these ranges contain the max and min pH that plants will grow at?

• 5.5-8

• 6.5-8

• 6.5-7.5

• 5.5-7.5