LOUISIANA ARBORIST EXAM SCRIPT (ACTUAL 2025/2026)
QUESTIONS WITH VERIFIED CORRECT ANSWERS GUARANTEE
A+
When soil is compacted:
a) micropores combine to form macropores.
b) soil particles are broken up, giving soil a finer texture.
c) a high water content will reduce the damaging effects.
d) total pore space and the percentage of macropores are
reduced. ---Answers----D
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. ---Answers----A
When are the most beneficial times to irrigate plants? ---
Answers----Late night or early morning.
What is the rate in which water soaks into the soil? ---
Answers----Infiltration
,In most instances, it is preferable to minimize water irrigation
directly to the foliage of plants. ---Answers----True
What is a measure of the rate of water used by plants and
evaporation from the soil known as? ---Answers----
Evapotranspiration
What is a landscape specifically designed to collect and hold
stormwater runoff called? ---Answers----Rain Garden
What are materials sprayed on plants to reduce water loss
through transpiration? ---Answers----Antitranspirants
Name 3 items used to monitor soil wetness or dryness. ---
Answers----Soil probes, tensiometers, and electronic
moisture sensors
Drought problems can be especially severe following periods
of moderate to high soil moisture conditions. ---Answers----
True
Name 3 tree health problems associated with flooding: ---
Answers----Root suffocation/death
Soil organisms killed
Predisposition to other stress factors
Root collar rot
,Tree prone to toppling
Mineral toxicities
In sites where poor drainage can be a problem, which of the
following will NOT help ensure plant survival?
a) careful plant selection and shallow planting.
b) improvement of surface drainage by changing the grade, or
trenching.
c) installation of drainage tiles.
d) placing gravel in the bottom of the planting hole and
backfilling with sandy soil. ---Answers----D
How do trees take up essential elements through their roots?
---Answers----Dissolved in water.
What elements are required by trees in large quantities? ---
Answers----Macronutrients
What macronutrient is a constituent of chlorophyll and , if
deficient, can cause reduced growth and yellowing of foliage? -
--Answers----Nitrogen
What is the yellowing of leaf veins called, which may be the
result of mineral deficiencies? ---Answers----Chlorosis
, Why is it desirable to use slow-release fertilizers? ---
Answers----They release nutrients, usually nitrogen, over an
extended period of time.
What is listed on the container label that gives the percentage
of nitrogen, phosphorus, and potassium? ---Answers----
Fertilizer analysis
How much actual nitrogen does a 50-lb bag of 20-10-5
fertilizer contain? ---Answers----10 lbs.
What form of fertilizer are manure and sewer sluge? ---
Answers----Organic
What type of fertilizer should be used if "burn" or leaching are
potential problems? ---Answers----Slow-release
If the concentration of salts within the surrounding soil is
much greater than the concentration of solutes found in root
cells, water is "drawn out" of the roots by a process called
what? ---Answers----Reverse osmosis
What is the most important factor for good uptake of fertilizer
elements? ---Answers----Adequate water
Surface application of fertilizer is relatively inexpensive and
makes the fertilizer available in the upper few inches of soil. -
--Answers----True
QUESTIONS WITH VERIFIED CORRECT ANSWERS GUARANTEE
A+
When soil is compacted:
a) micropores combine to form macropores.
b) soil particles are broken up, giving soil a finer texture.
c) a high water content will reduce the damaging effects.
d) total pore space and the percentage of macropores are
reduced. ---Answers----D
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. ---Answers----A
When are the most beneficial times to irrigate plants? ---
Answers----Late night or early morning.
What is the rate in which water soaks into the soil? ---
Answers----Infiltration
,In most instances, it is preferable to minimize water irrigation
directly to the foliage of plants. ---Answers----True
What is a measure of the rate of water used by plants and
evaporation from the soil known as? ---Answers----
Evapotranspiration
What is a landscape specifically designed to collect and hold
stormwater runoff called? ---Answers----Rain Garden
What are materials sprayed on plants to reduce water loss
through transpiration? ---Answers----Antitranspirants
Name 3 items used to monitor soil wetness or dryness. ---
Answers----Soil probes, tensiometers, and electronic
moisture sensors
Drought problems can be especially severe following periods
of moderate to high soil moisture conditions. ---Answers----
True
Name 3 tree health problems associated with flooding: ---
Answers----Root suffocation/death
Soil organisms killed
Predisposition to other stress factors
Root collar rot
,Tree prone to toppling
Mineral toxicities
In sites where poor drainage can be a problem, which of the
following will NOT help ensure plant survival?
a) careful plant selection and shallow planting.
b) improvement of surface drainage by changing the grade, or
trenching.
c) installation of drainage tiles.
d) placing gravel in the bottom of the planting hole and
backfilling with sandy soil. ---Answers----D
How do trees take up essential elements through their roots?
---Answers----Dissolved in water.
What elements are required by trees in large quantities? ---
Answers----Macronutrients
What macronutrient is a constituent of chlorophyll and , if
deficient, can cause reduced growth and yellowing of foliage? -
--Answers----Nitrogen
What is the yellowing of leaf veins called, which may be the
result of mineral deficiencies? ---Answers----Chlorosis
, Why is it desirable to use slow-release fertilizers? ---
Answers----They release nutrients, usually nitrogen, over an
extended period of time.
What is listed on the container label that gives the percentage
of nitrogen, phosphorus, and potassium? ---Answers----
Fertilizer analysis
How much actual nitrogen does a 50-lb bag of 20-10-5
fertilizer contain? ---Answers----10 lbs.
What form of fertilizer are manure and sewer sluge? ---
Answers----Organic
What type of fertilizer should be used if "burn" or leaching are
potential problems? ---Answers----Slow-release
If the concentration of salts within the surrounding soil is
much greater than the concentration of solutes found in root
cells, water is "drawn out" of the roots by a process called
what? ---Answers----Reverse osmosis
What is the most important factor for good uptake of fertilizer
elements? ---Answers----Adequate water
Surface application of fertilizer is relatively inexpensive and
makes the fertilizer available in the upper few inches of soil. -
--Answers----True
