ISA Soil Management & Fertilization Techniques

Question 1

Why is soil pH important for tree health?

Accepted Answer

It impacts nutrient availability

Answer

It regulates temperature.

Answer

It increases root growth.

Answer

It affects water retention.

Question 2

What is the effect of over-fertilizing trees?

Accepted Answer

Causes nutrient imbalance

Answer

Stimulates healthy growth.

Answer

Increases photosynthesis.

Answer

Improves pest resistance.

Question 3

What role does organic matter play in soil management?

Accepted Answer

Enhances soil fertility

Answer

Increases soil compaction.

Answer

Reduces water retention.

Answer

Decreases microorganism activity.

Question 4

When should trees be fertilized?

Accepted Answer

In early spring or late fall

Answer

During the hottest part of summer.

Answer

During winter dormancy.

Answer

Whenever the soil is dry.

Question 5

What is the purpose of a soil test?

Accepted Answer

To determine nutrient deficiencies

Answer

To check for soil compaction.

Answer

To assess tree health.

Answer

To monitor moisture levels.

Question 6

What is the most common cause of nutrient deficiencies in trees?

Accepted Answer

Poor soil conditions

Answer

Excessive watering.

Answer

Too much sunlight.

Answer

Incorrect tree species selection.

Question 7

Which nutrient is most critical for tree root development?

Accepted Answer

Phosphorus

Answer

Potassium.

Answer

Nitrogen.

Answer

Calcium.

Question 8

How can tree roots be protected during construction?

Accepted Answer

By fencing off the root zone

Answer

By watering the roots frequently.

Answer

By fertilizing the tree roots.

Answer

By mulching around the tree base.

Question 9

What is the effect of over-watering trees?

Accepted Answer

Leads to root rot

Answer

Stimulates root growth.

Answer

Prevents root rot.

Answer

Enhances nutrient uptake.