LANDSCAPE APPLICATOR EXAM WITH
CORRECT SOLUTIONS
Ch.1 List the advantages and disadvantages of
using insecticides - Answer-Advantages:
-Effective against economically damaging pests
-Can combine 1 or 2 insecticides to combat several
pests
-They act quickly to control pests before reaching
damaging levels
-For new pests, there are many compounds that
have been proven effective
-Effective insecticides, suitable formulations, &
application equipment are normally available
Disadvantages:
-Often eliminate beneficial insects, allowing target
organisms to rebound quickly
-Repeated exposure can lead to resistance in a pest
population
-Yearly dependence on applications is an added
cost
,-Always a potential for drift, residues, and damage
Ch.1 List the general kinds of damage insect pests
can cause - answer--Chew on seeds, roots, leaves,
stems, & fruits
-Tunnel in roots, stems, & leaves
-Suck plant juices
-Promote gall formation and other malformations
-Inject toxins into plants -Transmit diseases to plants
-Create a nuisance for people
Ch.1 Describe the structural features of insects -
answer-Insects have: body form has 3 regions:
head, thorax, abdomen; 3 pairs of legs attached to
thorax; 0, 1, or 2 pairs of wings attached to thorax; 1
pair of antennae
Ch.1 Explain how to distinguish insects from other
arthropods - answer-Arthropods have: exoskeleton;
body form has 2 regions: head & abdomen; usually
4 pairs of legs attached to head; no wings; no
antennae
,Ch.1 Contrast the difference between simple and
complete metamorphosis - answer--Simple:
"Incomplete Metamorphosis"; 3 stages: egg, nymph,
& adult
-Complete: 4 distinct stages: egg, larva, pupa, &
adult
Ch.1 Explain how temperature and humidity affect
insect development - answer-*Temperature &
humidity preferences vary for each insect.
*Combined effect of both on reproduction &
development is more dramatically different than the
effect of either alone.
-Temperature: development is faster with heat &
slower with cold temps; insects die at the high levels
of developmental threshold temps and become
inactive at low levels
-Humidity: effects insect diseases; effects moisture
levels required for survival
Ch.2 Explain what determines whether a given plant
is a weed - answer-Weeds are unwanted plants
, Ch.2 List the two main goals of weed management -
answer-1. Minimize weed competition
2. Limit the weed's reproduction so that you can still
manage the weed population in future years
Ch.2 Describe ways that weeds can pose problems
in turf and landscapes (7) - answer--Interfere with
management practices
-Produce chemical inhibitors that directly retard the
growth of desirable plants (allelopathy)
-Create a poor impression on customers
-Interferes with pesticide applications
-Support insect pests and plant diseases or provide
cover for rodents
-Are poisonous, allergenic, or irritating to people or
pets
-Dry out or die and become fire hazards
Ch.2 Distinguish grasses from broadleaf plants and
woody from herbaceous plants - answer--Grasses
(Monocots): most common weeds; have a single