True/False
Indicate whether the
statement is true or false.
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1.
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Forest culture is the
application of various treatments to forest stands to increase their
productivity.
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2.
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Forest management objectives
should include wildlife habitat, protection of watershed values, provision for recreation
opportunities, as well as timber.
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3.
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Forest timber stands are
usually the same.
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4.
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During thinning, the better
trees are left so the growth is concentrated on the higher-valued stems.
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5.
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Damaged trees are removed
during thinning.
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6.
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Planted pine trees reach the
thinning stage at 50 years.
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7.
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D + 6 means that the spacing in
feet between trees should equal the average tree diameter in the stand in inches plus the constant
6.
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8.
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Row thinning is becoming
popular as a labor saving practice.
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9.
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Row thinning selects the best
trees to remain for future growth.
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10.
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A stand needs thinning when its
rate of growth begins to slow down.
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11.
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Tree species respond
differently to thinnings.
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12.
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A satisfactory ratio between
the tree’s total height and its crown must be maintained for optimum
growth.
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13.
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The general tendency for forest
managers is to thin timber stands too much.
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14.
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The main reason for a cleaning
is to control disease.
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15.
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If the prescribed fire is to be
used, the flame levels must be controlled to keep them below the crowns of the young pine
trees.
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16.
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Hardwood are killed by
fire.
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17.
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Early methods of cleaning
involved the cutting and felling of small trees.
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18.
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Chemicals can be used to clean
a tree stand.
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19.
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The basal area per acre is
determined by totaling the basal area for all trees in the stand and dividing by the total area of
the stand.
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20.
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Basal area provides a good
indicator of the degree of stocking in a stand.
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21.
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The best time to thin is when
the live crown is more than one-half the total height of the tree.
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22.
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Sanitation cutting is the
removal of pest infected trees.
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23.
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In selection cutting, the total
volume removed each year exceeds the timber growth for that period.
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Multiple Choice
Identify the choice that
best completes the statement or answers the question.
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24.
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Which of the following is not a
silviculture practice?
a. | tree
planting | c. | pruning | e. | harvest cutting | b. | fire prevention | d. | intermediate cuttings |
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25.
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The cutting of timber from the
reproductive stage to timber maturity is called ______ cutting.
a. | harvest | b. | thinning | c. | intermediate | d. | middle |
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26.
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Which of the following is not
an objective of an intermediate cut?
a. | improvement of existing
stand | b. | manipulation of tree and stand growth | c. | earlier financial
returns | d. | removal of mature timber | e. | reduction of condition for
pests |
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27.
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A _______ is a form of
intermediate cutting in immature or young trees which improves the yield of the
island.
a. | thinning | b. | cleaning | c. | release cut | d. | harvest cut |
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28.
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Which of the following is not a
thinning method?
a. | low
thinning | c. | selection
thinning | e. | mechanical
thinning | b. | crown thinning | d. | early thinning |
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29.
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In _______ thinning, trees are
removed from the lower crown class.
a. | low | b. | crown | c. | selection | d. | mechanical |
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30.
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_______ thinning removes trees
according to some predetermined pattern or spacing.
a. | low | b. | crown | c. | selection | d. | mechanical |
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31.
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______ thinning removes the
dominant trees to concentrate growth, on the lower crown class.
a. | low | b. | crown | c. | selection | d. | mechanical |
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32.
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_____ thinning opens up the
canopy to concentrate growth on the most promising specimens of dominant
classes.
a. | low | b. | crown | c. | selection | d. | mechanical |
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33.
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The best technique used to
determine when timber stands need thinning is the _____.
a. | medium
plan | b. | live crown
ratio | c. | heartwood
plan |
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34.
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The use of an _____ can show
that a reduction in width of annual rings exists.
a. | chainsaw | c. | increment borer | b. | scale stick | d. | tape |
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35.
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_____ is used to free the best
trees from undesirable individuals of the same age which overtop them.
a. | thinning | b. | cutting | c. | cleaning | d. | weeding |
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36.
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The use of _____ can be the
most economical tool for cleanings.
a. | cutting | c. | chemicals | b. | fire | d. | biological controls |
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37.
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_____ cuttings are designed to
free a young stand up to sapling size from the competition of older, overtopping individual
trees.
a. | thinning | b. | cleaning | c. | improvement | d. | liberation |
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38.
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______ are done to improve
stand composition, quality, condition, or form by removing inferior trees.
a. | liberation
cuttings | c. | harvest
cuttings | b. | improvement cuttings | d. | thinnings |
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39.
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Which of the followings not
a type of improvement cutting?
a. | sanitation | b. | harvest | c. | salvage | d. | pruning |
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40.
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_____ cuttings remove damaged
trees before the value is lost.
a. | sanitation | b. | salvage | c. | pruning | d. | harvest |
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41.
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______ is the removal of side
branches from standing trees.
a. | sanitation
cutting | c. | pruning | b. | salvage cutting | d. | harvest cutting |
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42.
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_____ is the removal of mature
timber.
a. | improvement
cutting | c. | pruning | b. | sanitation cutting | d. | harvest cutting |
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43.
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In _______ cutting, the seed
bearing trees are left for seed production.
a. | clear | b. | seed tree | c. | shelterwood | d. | selection |
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44.
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In _____ cutting, only a
portion of the stand is removed at any one time.
a. | clear | b. | seed tree | c. | shelterwood | d. | selection |
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45.
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_______ cutting involves the
cutting and removing of individual trees based on maturity, growth rate, and
vigor.
a. | clear | b. | seed tree | c. | shelterwood | d. | selection |
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46.
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In _____ cutting, all the trees
in the stand are cut.
a. | clear | b. | seed tree | c. | shelterwood | d. | selection |
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