Louisiana Arborist Exam 2025-2026 Most Recent
Version Comprehensive 230 Questions and
Verified Answers Accurate Solutions Already
Graded A+ Get it 100% Correct
10-6-4 represents percentages of what in fertilizers? - CORRECT 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. - CORRECT 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 - CORRECT ANSWER: A
A felling notch should not generally exceed a depth of how much? - CORRECT
ANSWER: 1/3 the diameter of the tree.
A pH of 5 is how many more time acidic than a pH of 7? - CORRECT 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. - CORRECT ANSWER: C
A tree listed as adaptable to wet soil conditions will always thrive if planted in those
conditions. - CORRECT 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. - CORRECT ANSWER: D
An 80-lb bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen? -
CORRECT ANSWER: 8 lbs. (10%)
Are the use of wound dressings beneficial? - CORRECT ANSWER: No
Are there advantages of pruning a tree at planting time? - CORRECT ANSWER: No
Are wound dressings or paint recommended after making pruning cuts? Why? -
CORRECT ANSWER: No, studies show it does no good.
Besides primary, what are the meristems located at the end of the shoots called? -
CORRECT ANSWER: apical
By definition, a tree cannot pose a risk if there is no what? - CORRECT ANSWER:
Target
, Construction fences should be placed as far from the trunk as possible. - CORRECT
ANSWER: True
Copper, chlorine, and boron are what? - CORRECT 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. - CORRECT 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. - CORRECT ANSWER: A
Describe how to cut down a large limb. - CORRECT 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. - CORRECT 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). - CORRECT ANSWER: 1) Trees are highly
compartmentalized.
Version Comprehensive 230 Questions and
Verified Answers Accurate Solutions Already
Graded A+ Get it 100% Correct
10-6-4 represents percentages of what in fertilizers? - CORRECT 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. - CORRECT 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 - CORRECT ANSWER: A
A felling notch should not generally exceed a depth of how much? - CORRECT
ANSWER: 1/3 the diameter of the tree.
A pH of 5 is how many more time acidic than a pH of 7? - CORRECT 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. - CORRECT ANSWER: C
A tree listed as adaptable to wet soil conditions will always thrive if planted in those
conditions. - CORRECT 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. - CORRECT ANSWER: D
An 80-lb bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen? -
CORRECT ANSWER: 8 lbs. (10%)
Are the use of wound dressings beneficial? - CORRECT ANSWER: No
Are there advantages of pruning a tree at planting time? - CORRECT ANSWER: No
Are wound dressings or paint recommended after making pruning cuts? Why? -
CORRECT ANSWER: No, studies show it does no good.
Besides primary, what are the meristems located at the end of the shoots called? -
CORRECT ANSWER: apical
By definition, a tree cannot pose a risk if there is no what? - CORRECT ANSWER:
Target
, Construction fences should be placed as far from the trunk as possible. - CORRECT
ANSWER: True
Copper, chlorine, and boron are what? - CORRECT 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. - CORRECT 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. - CORRECT ANSWER: A
Describe how to cut down a large limb. - CORRECT 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. - CORRECT 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). - CORRECT ANSWER: 1) Trees are highly
compartmentalized.
