Research Briefs Test

Research Briefs Test
Please fill out your email address in the first box and your name, ISA cert. no. & specialty in the second box. Answer the questions below and when you are finished, press submit.

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Question: 1. Which statement about waterlogged trees is not correct?
Nonfertilized trees had the greatest capacity for recovery.
English oak proved to be more waterlogging-tolerant than European beech.
Applications of N fertilizers after waterlogging would be of benefit to tree recovery and growth.
Applications of N fertilizers enhance the tolerance of trees under prolonged waterlogged conditions

Question: 2. Residents in an area with mature street trees:
would like replacement trees to be a single species.
would like replacement trees to be flowering.
would like replacement trees planted before mature tree removals.
all of the above.

Question: 3. The SPAD meter offers:
a hand held system to aid in the evaluation of tree health.
consistency in sample collection.
seasonal calibration.
reductions in tree vitality.

Question: 4. Which statement about pulling stresses is not true?
Failures of codominant stems occurred at 45% of wood strength.
Stem failures occurred at 79% of wood strength.
Prediction of maximum stress was more reliable for codominant failures than stem failures.
Prediction of maximum bending was more reliable than prediction of maximum stress from tree morphometric data.

Question: 5. Canker disease in Pacific madrone is treated by:
prevention of stress.
prevention of wounding.
injected treatments.
all of the above.

Question: 6. Bare root trees are better than B&B because:
they reduce the impact on the land from soil removal.
they experience minimal loss of fibrous roots.
they have lighter weight for handling.
all of the above.

Question: 7. Which statement about tree stability is not true?
Linear trenching should not be closer to the trunk than a distance equal to or greater than three times the trunk diameter.
Pull force decreased by 15% when a tangential cut was made at the trunk.
Arborists should avoid cutting any tree roots near the trunk.
When individual roots were severed, the pull force was reduced with each root cut.

Question: 8. Which statement about tree programs in Pennsylvania is true?
In Pennsylvania, no tree programs exist in 46% of the cities, 82% of the boroughs, and 97% of the townships.
A good understanding of the benefits of trees leads to low public support, insufficient funding, and inadequate maintenance.
Most officials discourage spending money on trees and regard tree programs as less important than other civic responsibilities.
None of the above.

Question: 9. Trees mulched with compost generally had:
greater height, trunk diameter, and current-year shoot growth.
increased transpiration.
increased carbon assimilation of leaves.
all of the above.

Question: 10. Which trees can be established on landfill sites with survival rates comparable to brownfield sites?
red maple
whitebeam
red oak
white pine

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