B.S.F. or B.Sc.F. Bachelor of Science in Forestry Bachelor of Science in Forestry: Forest Pathology and Disease Management 2

Question 1

Which fungal pathogen causes white pine blister rust, a significant disease of five-needled pines in North America?

Accepted Answer

Cronartium ribicola

Answer

Cronartium ribicola is the introduced rust fungus responsible for white pine blister rust, which requires Ribes species as an alternate host.

Question 2

What is the primary mode of spread for Phytophthora ramorum, the pathogen causing sudden oak death?

Accepted Answer

Zoospores through water movement and infected plant material

Answer

Phytophthora ramorum spreads primarily via zoospores transported by water runoff, rain splash, and movement of infected nursery stock.

Question 3

In forest disease management, what does the term 'disease triangle' refer to?

Accepted Answer

The interaction of susceptible host, virulent pathogen, and favorable environment

Answer

The disease triangle illustrates that disease occurs only when a susceptible host, virulent pathogen, and favorable environment all overlap simultaneously.

Question 4

Which of the following best describes the role of Ribes eradication as a management strategy for white pine blister rust?

Accepted Answer

It disrupts the fungal life cycle by eliminating the required alternate host

Answer

Removing Ribes shrubs disrupts the obligate two-host life cycle of Cronartium ribicola, preventing spore production that would infect pines.

Question 5

Fusiform rust, caused by Cronartium quercuum f.sp. fusiforme, primarily affects which tree species in the southeastern United States?

Accepted Answer

Loblolly and slash pines

Answer

Fusiform rust is the most economically damaging disease of loblolly and slash pines in southeastern pine plantations.

B.S.F. or B.Sc.F. Bachelor of Science in Forestry Practice Test

B.S.F. or B.Sc.F. Bachelor of Science in Forestry Practice Test

B.S.F. or B.Sc.F. Bachelor of Science in Forestry Bachelor of Science in Forestry: Forest Pathology and Disease Management 2