Free Certified Arborist Soil Management Questions and Answers

Question 1

Which of the following soil pH levels would give plants the greatest availability of iron?

Accepted Answer

5

Answer

4

Answer

9

Answer

7

Question 2

Which kind of bacteria are essential for the humus to be produced?

Accepted Answer

Actinomycetes

Answer

Nitrospirae

Answer

Aquificae

Answer

Proteobacteria

Question 3

After all gravitational water has drained and the soil has both accessible and unavailable water, what condition is it in?

Accepted Answer

Field capacity

Answer

Saturation

Answer

Permanent wilting point

Answer

Irrigation

Question 4

Leaching is known as:

Accepted Answer

The method by which water removes chemicals from soil.

Answer

A tree's gradual decline due to inadequate sunlight.

Answer

The act of insects removing nutrients from a tree.

Answer

The improvement in root health following soil aeration.

Question 5

What is resistance to changes in pH?

Accepted Answer

Buffering capacity

Answer

Volatilization

Answer

Infiltration rate

Answer

Cation exchange capacity

Question 6

Which metric provides the best indication of soil fertility?

Accepted Answer

Cation exchange capacity

Answer

Water-holding capacity

Answer

Soil pH

Answer

Buffering capacity

Question 7

What is meant by the term "reference evapotranspiration measure"?

Accepted Answer

The expected quantity of plant and soil water loss considering the location and the current vegetation.

Answer

The typical rainfall in a certain location.

Answer

The average amount of water in a species' foliage.

Answer

The water source in a certain location.

Question 8

What is the primary purpose of xeriscaping in landscaping

Accepted Answer

To protect the landscape against drought.

Answer

To protect the landscape against frost.

Answer

To protect the landscape against flood.

Answer

To protect the landscape against sunburn.

Question 9

In the fertilizer analysis displayed on the container, which of the following is not a standard component?

Accepted Answer

Potassium phosphate

Answer

Total nitrogen

Answer

Soluble potash

Answer

Phosphoric acid

Question 10

Which of the following DOES NOT always belong in the complete fertilizer?

Accepted Answer

Calcium

Answer

Phosphorus

Answer

Nitrogen

Answer

Potassium