AC-Ch. 8 Pruning Flashcards Preview

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Flashcards in AC-Ch. 8 Pruning Deck (33)
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1

Plant growth regulator that inhibits the action of the plant hormone gibberellin, which, among other things, regulates cell elongation.

Anti gibberellin

2

Inhibition of lateral buds, decreasing from the top down, by apical buds over many seasons, resulting in trees with an excurrent growth form.

Apical control

3

Raised strip of bark at the top of the branch union, where the growth and expansion of the trunk or parents stem and adjoining branch push the bark into a ridge

Branch Bark Ridge

4

Forked stems nearly the same size and diameter, arising from a common junction and lacking a normal branch union.

Codominant stems

5

Natural defense process in trees by which chemical and physical boundaries are created that act to limit the spread of disease and decay organisms

compartmentalization

6

In pruning, the selective removal of dead, dying, diseased, and broken branches from the tree crown

Crown cleaning

7

Specialized technique of pruning and training plants to grow within a plane, such as along A wall or fence.

Espalier

8

Large, divided Leaf structures found in palms and ferns

Fronds

9

Cutting a shoot back to a bud or cutting branches back to buds, stubs, or lateral branches not large enough to assume apical dominance. Cutting an older branch or stem back to a stub in order to meet a structural objective.

Heading (back)

10

Bark that becomes embedded in a crotch between branch and trunk or between codominant stems. Causes a weak structure.

Included bark

11

Between the nodes on a stem

Internodal

12

Secondary or subordinate branch or root

Lateral

13

Primary terminal shoot or trunk of a tree. Large usually upright stem. A stem that dominates a portion of the crown by suppressing lateral branches

Leader

14

Poor pruning practice in which an excessive number of branches are thinned from the inside and lower part of specific limbs or a tree crown leaving mostly terminal foliage. Results in poor branch taper poor wind load distribution and a higher risk of branch failure

Lion tailing

15

In structural pruning of young trees branches that will be left in place often forming the initial scaffold framework of a tree.

Permanent branches

16

Compound effective in small quantities that affects the growth and/or development of plants.

Plant growth regulator

17

Specialty pruning technique in which a tree with a large maturing form is kept Relatively short. Starting on a young tree, internodal cuts are made at a chosen height, resulting in the development of callus knobs at the cut height. Requires regular removal of the sprouts arising from the cuts.

Pollarding

18

Selective pruning to provide vertical clearance.

Raising

19

Pruning to decrease height and/Or spread of a branch or crown

Reduction

20

Pruning cut that reduces the length of a branch or stem back to a lateral branch large enough to assume apical dominance

Reduction cut

21

Pruning to improve the structure, form, and appearance of trees that have been improperly trimmed, vandalized, or damaged.

Restoration

22

Management and planting to restore altered or damaged ecosystems or landscapes

Restoration

23

Permanent or structural branches that form the scaffold architecture or structure of a tree

Scaffold branches

24

Pruning to establish a strong arrangement or system of scaffold branches

Structural pruning

25

Prune to reduce the size and ensuring growth of a branch in relation to other branches or leaders.

Sub ordinate

26

In structural pruning of young trees, branches that are left in place or subordinated but will be removed later in forming the permanent scaffold framework of a tree.

Temporary branches

27

In pruning, the selective removal of life branches to provide light or air penetration through the tree or to lighten the weight of the remaining branches.

Thinning

28

Inappropriate pruning techniques to reduce tree size. Cutting back a tree to a predetermined crown limit, often at internodes

Topping

29

Pruning around or near utility facilities with the object of maintaining safe and reliable utility service.

Utility pruning

30

Selective pruning to enable a view form a predetermined point

Vista pruning