Louisiana Arborist Exam Questions and answers.

Louisiana Arborist Exam Questions and
answers.


Discuss the differences between "flush cuts" and proper cuts made to outer portions of branch collar.
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How do "flush cuts" affect growth? - (correct answer) -
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A proper cut leaves the branch bark ridge, branch collar, and swollen collar in tact. It enables the cut
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to close in a circular fashion. Flush cuts remove it and opens the tree to decay by removing dead woo
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d which branch defense zones form.
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Explain thinning cut and describe how they will affect the tree. - (correct answer) -
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It is removing the branch back to the lateral branch, large enough to assume terminal role. It opens t
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he tree, reduces weight, reduces height, and retains its shape.
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Discuss Shingo's theory of walling off infections in trees called CODIT (Compartmentalization of Decay i
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n Trees). - (correct answer) - 1) Trees are highly compartmentalized.
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2) If the tree is wounded, it will heal itself by walling itself off from injury.
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How will pruning a tree at time of transplanting affect tree growth? - (correct answer) -
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It decreases root growth. You should avoid pruning except for broken or damaged limbs.
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Are there advantages of pruning a tree at planting time? - (correct answer) - No
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What is the major objective in crown cleaning? - (correct answer) -
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It removes dead, diseased, and dying crowded or wealdy attached limbs from the crown. the objecti
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ve is to correct small growth problems before they get big growth problems.
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Name five methods used to apply fertilization to trees. - (correct answer) -
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Broadcasting, drill hole, injection, foliar application, and implants
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Are wound dressings or paint recommended after making pruning cuts? Why? - (correct answer) -
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No, studies show it does no good.
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What is the purpose of crown restoration? - (correct answer) -
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Improves structure and appearance of improperly pruned or storm-
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damaged trees by encouraging new growth. bn bn bn bn bn




List 3 ways cavities are started in trees. - (correct answer) - Insects, lightning, and wounds.
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,What is the definition of a tree? - (correct answer) -
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A woody perennial with one or several trunks which grow higher than 12-15 ft in height.
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List five species of trees to plant under a power line. - (correct answer) -
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Crape myrtle, chaste tree, red bud, silver bell, dogwood.
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If you want to fertilize a tree by broadcasting 4 lbs. of actual nitrogen and want to use 16-4-
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8 fertilizer, how often would you apply it over 1000 sq. ft. in one year? - (correct answer) -
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1 lb. of Nitrogen / .16 (N in fertilizer) = 6.25 lbs per 1,000 ft.
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6.25 lbs of Fertilizer x 4 lbs of N = 25 lbs of Fertilizer annually.
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6.25 lbs. of 16-4-8 fertilizer should be applied 4 times a year.
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List the most important pieces of safety equipment when using a chainsaw. - (correct answer) -
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Safety glasses, earplugs, face shield, hard hat, leg protection, and boots.
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List the major parts of a tree and their function. - (correct answer) - Leaves -
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photosynthesis, transpiration.
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Trunk/Stems - conduct, support, storage. bn bn bn bn




Roots - anchorage, absorbing, storage, conduction.
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Flowers - reproduction. bn bn




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What is the most critical time after transplanting a tree and why? - (correct answer) -
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The 1st year to focus on root establishment.
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What are the benefits of mulching a young tree? - (correct answer) -
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To conserve moisture, reduce competition from weeds and grass, improve soil structure, and aesthe
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List 3 benefits of mulch. - (correct answer) - 1) Retains moisture.
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2) Reduces weeds.
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3) Insulates roots.
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Why is the use of spurs prohibited on living trees? - (correct answer) -
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It causes wounds and damages the tree.
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What is chlorosis in a tree and how is it treated? - (correct answer) -
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The yellowing of leaves can be treated with Manganese.
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, Why is it recommended to use a block when lowering a heavy limb? - (correct answer) -
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To carry the load and reduce injury to a crotch from a climber's line.
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Describe how to cut down a large limb. - (correct answer) -
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Place the rigging point above the work, tie the limb at the butt, then cut and lower the limb to the g
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round.

What other activities can a climbing rope be used for? - (correct answer) -
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To secure a climber to the tree for use of 2-hands, to swing, and for rescue.
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Distinguish between narrow and wide crotch angles. Could either harm the tree? - (correct answer) -
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Crotch angles are where branches fork, or where a main limb joins the trunk.
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Narrow Crotch angles (Tight) are where the angle between two branches is too narrow (less than 45 d
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egrees). they can lead to structure weaknesses and tree failure
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Wide Crotch angles (Strong) are where the angle between the two branches 45 degrees or more.
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Describe Xylem and Phloem, and their function. - (correct answer) -
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Plants have tissues to transport water, nutrients and minerals.
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Xylem transports water and mineral salts from the roots up to other parts of the plant.
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Phloem transports sucrose and amino acids from the leaves and other parts of the plant.
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Is a contract required between an LA licensed arborist before tree work is performed? -
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(correct answer) - Yes
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What state and federal licenses are required before an arborist applies pesticides? - (correct answer) -
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State commissioned pesticide applicators license. Federal in accordance with all federal regulations,
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may apply pesticides for the purpose of retarding decay or disease.
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What is soil pH and does it affect nutrient availability of a tree? - (correct answer) -
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The acidity or alkalinity of the soil. Trees may exhibit nutrient deficiency or toxicity symptoms from u
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What is Mistletoe and is it harmful to a tree? - (correct answer) -
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Mistletoe is a parasite that grows in the branches of conifers and leeches nutrients away.
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