CHT Arboriculture & Tree Care

Question 1

Which pruning cut removes a branch back to its point of origin at the trunk or a larger branch?

Accepted Answer

Thinning cut

Answer

A thinning cut removes an entire branch back to its origin at the parent branch or trunk, improving light and air penetration without stimulating excessive regrowth.

Question 2

The 'branch collar' is important to preserve during pruning because it:

Accepted Answer

Contains specialized tissue that seals the wound and prevents decay

Answer

The branch collar contains wound-closing tissue (callus) and chemical barriers that compartmentalize decay; cutting flush into it removes these defenses.

Question 3

Tree topping is considered poor arboricultural practice primarily because it:

Accepted Answer

Creates large wounds, stimulates weak water sprouts, and accelerates decline

Answer

Topping creates large, exposed wounds prone to decay, triggers vigorous but weakly attached water sprouts, and stresses trees, often leading to structural failure and decline.

Question 4

What is the recommended planting depth for a balled-and-burlapped tree?

Accepted Answer

Root flare at or slightly above grade

Answer

The root flare (where trunk transitions to roots) should be at or slightly above finished grade to prevent girdling, crown rot, and decline.

Question 5

Which symptom is most characteristic of oak wilt disease?

Accepted Answer

Rapid wilting and bronzing of leaves starting at leaf tips, moving inward

Answer

Oak wilt (Bretziella fagacearum) causes rapid wilting and bronzing starting at leaf margins and tips, moving inward; red oaks can die within weeks of infection.

CHT - Certified Horticultural Technician Practice Test

CHT - Certified Horticultural Technician Practice Test

CHT Arboriculture & Tree Care