LOUISIANA ARBORIST EXAM SCRIPT ACTUAL

LOUISIANA ARBORIST EXAM SCRIPT (ACTUAL / )

QUESTIONS WITH VERIFIED CORRECT ANSWERS GUARANTEE

A+

When soil is compacted:

• micropores combine to form macropores.
• soil particles are broken up, giving soil a finer texture.
• a high water content will reduce the damaging effects.
• total pore space and the percentage of macropores are

reduced. ---Answers----D

A characteristic of sandy soils in arid regions is that they:

• tend to become alkaline, and salts build up due to lack of

heavy rainfall.

• tend to become acid because basic ions leach out.
• are fine in texture due to high sand content.
• 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 1 / 4

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 2 / 4

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?

• careful plant selection and shallow planting.
• improvement of surface drainage by changing the grade, or

trenching.

• installation of drainage tiles.
• 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

• / 4

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

• / 4