Stressful Situations Quiz

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Trees should be pruned every 2-3 years to maximize health and vigor.
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1 point

True

False

If boxwood leafminer (a common insect pest) is identified in the flowerbed of a typical suburban home, the most appropriate management practice is to:
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1 point

Remove the boxwoods and the soil they were planted in to eradicate the pathogen

Apply an approved insecticide at the recommended time only to the boxwoods

Shear the boxwoods as tightly as possible to generate healthy new growth

Immediately apply insecticides and fertilizer to all trees and shrubs on the property

3) Which stressor can cause a tree to drop leaves prematurely?
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1 point

Heat

Fungal infection

Both A and B

None of the above

The disease triangle shows infections can only occur when a pathogen has:
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1 point

Plenty of fertilizer to feed from

Pre-existing conditions, such as pruning wounds

A susceptible host and a favorable environment

The ability to infect any plant at any time

A tree displaying minor symptoms of stress:

1 point

Will likely recover on its own

Should be pruned and treated with fungicides immediately

Could be fertilized and treated with insecticide just in case

Should be removed before the stress is spread to other trees

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