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"Several small, ornamental trees in an irrigated
planting with full sun and significant wind exposure
are beginning to wilt and are exhibiting minimal
twig extension growth. The planting bed had
,been mulched, but little mulch remains. What
diagnostic step would you take first?
a. Collect soil samples to send to the lab to test
for high pH and aluminum toxicity.
b. Probe the soil to check for moisture level and
penetration resistance, and look for signs of
water runoff.
c. Collect leaf samples to test for high levels of
herbicides that mimic drought symptoms.
d. Take an increment core to determine whether
the problem is chronic or acute." - Answer: "Probe the soil to
check for moisture level and
penetration resistance, and look for signs of
water runoff."
"Prolonged flooding can be very damaging to trees
because the anaerobic conditions
a. increase the relative percentage of clay in the
soil texture.
b. change the biological and chemical composition
,in the soil.
c. cause the roots to grow deeper to escape the
surface water.
d. cause excessive percolation in the soil, destroying
micropores." - Answer: "change the biological and chemical
composition
in the soil."
"You are writing the specifications for tree preservation
on a development site. For the tree protection
zone barriers, you specify
a. 3 ft (1 m) high, metal rebar with hi-vis yellow
caution tape and ""Do Not Cross"" lettering.
b. 4 to 6 ft (1.2 to 1.8 m) high, sturdy metal fencing
that is anchored to the ground.
c. 3 ft (1 m) high, safety orange, plastic fencing
for visibility and ease of moving.
d. 6 ft (1.8 m) high, standard wooden privacy
fencing that is not set into the ground." - Answer: "4 to 6 ft (1.2
to 1.8 m) high, sturdy metal fencing
, that is anchored to the ground."
"You are a consultant to a municipality looking to
contract line-clearance pruning. Previously, they
had contracted with a local tree service to top the
trees below the wires. Instead, you recommend
directional pruning and explain the process of
a. removing or reducing interfering branches back
to lateral branches that are not growing in the
direction of the clearance zone.
b. removing or reducing all branches that grow in
the direction of the clearance zone to a predetermined
clearance distance.
c. directing growth away from the clearance zone
using only collar cuts back to the parent branches.
d. subordinating all lateral branches that are growing
toward the clearance zone and are greater than
one-third the diameter of the parent branches." - Answer:
"removing or reducing interfering branches back
to lateral branches that are not growing in the