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Louisiana Arborist Exam Latest Updated
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Louisiana Arborist Exam Latest Updated
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Louisiana Arborist Exam Latest Updated10-6-4 represents percentages of what in fertilizers? - ANSWER-Nitrogen, phosphorus,
and potassium
A characteristic of sandy soils in arid regions is that they:
a) tend to become alkaline, and salts build up due to lack of heavy rainfall.
b) tend to become acid because basic ions leach out.
c) are fine in texture due to high sand content.
d) have a high water-holding capacity because rainfall is scare. - ANSWER-A
A condition characterized by a cluster of dwarf shoots on affected twigs is called:
a) witch's broom.
b) anthracnose
c) chlorosis
d) Verticillium wilt - ANSWER-A
A felling notch should not generally exceed a depth of how much? - ANSWER-1/3 the
diameter of the tree.
A pH of 5 is how many more time acidic than a pH of 7? - ANSWER-100 times
A soil test may not identify a nutrient deficiency problem in a plant because:
a) the tests are not reliable.
b) the nutrient content can change after collection.
c) the soil may be inhibiting uptake.
d) no one knows which levels of nutrients are adequate. - ANSWER-C
A tree listed as adaptable to wet soil conditions will always thrive if planted in those
conditions. - ANSWER-False
A tree may not respond immediately to fertilizer application if:
a) a slow-release fertilizer was used.
b) there is inadequate soil moisture.
c) the tree is not actively growing.
d) all of the above. - ANSWER-D
An 80-lb bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen? -
ANSWER-8 lbs. (10%)
Are the use of wound dressings beneficial? - ANSWER-No
Are there advantages of pruning a tree at planting time? - ANSWER-No
,Are wound dressings or paint recommended after making pruning cuts? Why? -
ANSWER-No, studies show it does no good.
Besides primary, what are the meristems located at the end of the shoots called? -
ANSWER-apical
By definition, a tree cannot pose a risk if there is no what? - ANSWER-Target
Construction fences should be placed as far from the trunk as possible. - ANSWER-
True
Copper, chlorine, and boron are what? - ANSWER-Micronutrients
Current research indicates that filling cavities may do more harm than good because
decay can develop in the interface between filler and tree. - ANSWER-True
Damage caused by nonliving factors tend to be:
a) uniform with definite borders.
b) uniform, but generally not affecting the new growth.
c) random and concentrated on the new growth.
d) random with irregular borders. - ANSWER-A
Describe how to cut down a large limb. - ANSWER-Place the rigging point above the
work, tie the limb at the butt, then cut and lower the limb to the ground.
Describe Xylem and Phloem, and their function. - ANSWER-Plants have tissues to
transport water, nutrients and minerals.
Xylem transports water and mineral salts from the roots up to other parts of the plant.
Phloem transports sucrose and amino acids from the leaves and other parts of the
plant.
Discuss Shingo's theory of walling off infections in trees called CODIT
(Compartmentalization of Decay in Trees). - ANSWER-1) Trees are highly
compartmentalized.
2) If the tree is wounded, it will heal itself by walling itself off from injury.
Discuss the differences between "flush cuts" and proper cuts made to outer portions of
branch collar. How do "flush cuts" affect growth? - ANSWER-A proper cut leaves the
branch bark ridge, branch collar, and swollen collar in tact. It enables the cut to close in
a circular fashion. Flush cuts remove it and opens the tree to decay by removing dead
wood which branch defense zones form.
Diseases that affect only the foliage of a tree may not be a serious problem unless
defoliation occurs in several consecutive years. - ANSWER-True
, Distinguish between narrow and wide crotch angles. Could either harm the tree? -
ANSWER-Crotch angles are where branches fork, or where a main limb joins the trunk.
Narrow Crotch angles (Tight) are where the angle between two branches is too narrow
(less than 45 degrees). they can lead to structure weaknesses and tree failure
Wide Crotch angles (Strong) are where the angle between the two branches 45 degrees
or more.
Drought problems can be especially severe following periods of moderate to high soil
moisture conditions. - ANSWER-True
Explain CODIT. - ANSWER-When a tree is wounded, cells undergo changes to form
"walls" around the wound, slowing or preventing the spread of disease and decay to the
rest of the tree.
Explain thinning cut and describe how they will affect the tree. - ANSWER-It is removing
the branch back to the lateral branch, large enough to assume terminal role. It opens
the tree, reduces weight, reduces height, and retains its shape.
Fastigiate trees have a growth form that is:
a) upright
b) weeping
c) overaching
d) vase-shaped - ANSWER-A
Fertilizer is always recommended at the time of planting. - ANSWER-False
How do trees take up essential elements through their roots? - ANSWER-Dissolved in
water.
How many buds will a compound leaflet with multiple leaflets have? - ANSWER-One
How much actual nitrogen does a 50-lb bag of 20-10-5 fertilizer contain? - ANSWER-10
lbs.
How will pruning a tree at time of transplanting affect tree growth? - ANSWER-It
decreases root growth. You should avoid pruning except for broken or damaged limbs.
If a planting hole in a clay soil site is backfilled with sandy soil:
a) drainage will be improved, helping the tree to establish.
b) nutrients will be more available to the newly established roots within the planting
hole.
c) water will drain very slowly out of the planting hole.
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