Soil Analysis

Question 0

Base saturation above 50% is

Answer 0

Desirable for agriculture.

Question 1

High exchangeable Ca2+ suggests that

Answer 1

The area is limed.

Question 2

Growing forests have low

Answer 2

OM (low CEC & LOI) and remove large amounts of cations.

Question 3

A high CEC corresponds to a high

Answer 3

LOI, suggesting high levels of organic matter.

Question 4

Ca2+ and Mg2+ dominate in

Answer 4

Temperate region soils.

Question 5

Soils can be classified by: (8)

Answer 5

Moisture, 
Temperature, 
Structure, 
Mineralogy, 
Texture, 
Colour, 
Profile depth, 
Organic matter content.

Question 6

Plants maintain internal charge balance whilst

Answer 6

Taking up cations by releasing hydrogen ions into soil solution; growing vegetation acidifies soil.

Question 7

The hydrogen ions released into the soil solution interact with the soil, releasing

Answer 7

More basic cations into the soil solution and lowering the base saturation.

Question 8

Oxides are materials that

Answer 8

Contain metals combined with oxygen,

Eg iron oxide. Fe2O3

Question 9

Macronutrients: (9)

Answer 9

Oxygen, magnesium, potassium, sulfur,

Hydrogen, nitrogen, carbon, phosphorus, calcium.

Question 10

Micronutients: (9)

Answer 10

Iron, colbart, nickel, copper, zine,

Chlorine, molybdenum, magnese, boron.