Wisconsin Pesticide Applicator (2025 update)
COMPLETE QUESTIONS AND VERIFIED
ANSWERS (Elaborated) Aready graded A+!!
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-Chew on seeds, roots, leaves, stems, & fruits
-Tunnel in roots, stems, & leaves
Ch.1 List the general kinds
-Suck plant juices
of damage insect pests
-Promote gall formation and other malformations
can cause
-Inject toxins into plants -Transmit diseases to plants
-Create a nuisance for people
Insects have: body form has 3 regions: head, thorax,
Ch.1 Describe the
abdomen; 3 pairs of legs attached to thorax; 0, 1, or
structural features of
2 pairs of wings attached to thorax; 1 pair of
insects
antennae
Ch.1 Explain how to Arthropods have: exoskeleton; body form has 2
distinguish insects from regions: head & abdomen; usually 4 pairs of legs
other arthropods attached to head; no wings; no antennae
Ch.1 Contrast the -Simple: "Incomplete Metamorphosis"; 3 stages:
difference between egg, nymph, & adult
simple and complete -Complete: 4 distinct stages: egg, larva, pupa, &
metamorphosis adult
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*Temperature & humidity preferences vary for each
insect.
*Combined effect of both on reproduction &
development is more dramatically different than the
Ch.1 Explain how
effect of either alone.
temperature and humidity
-Temperature: development is faster with heat &
affect insect
slower with cold temps; insects die at the high levels
development
of developmental threshold temps and become
inactive at low levels
-Humidity: effects insect diseases; effects moisture
levels required for survival
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
Ch.1 List the advantages
-Effective insecticides, suitable formulations, &
and disadvantages of
application equipment are normally available
using insecticides
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.2 Explain what Weeds are unwanted plants
determines whether a
given plant is a weed
Ch.2 List the two main 1. Minimize weed competition
goals of weed 2. Limit the weed's reproduction so that you can still
management manage the weed population in future years
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-Interfere with management practices
-Produce chemical inhibitors that directly retard the
growth of desirable plants (allelopathy)
Ch.2 Describe ways that -Create a poor impression on customers
weeds can pose -Interferes with pesticide applications
problems in turf and -Support insect pests and plant diseases or provide
landscapes (7) cover for rodents
-Are poisonous, allergenic, or irritating to people or
pets
-Dry out or die and become fire hazards
-Grasses (Monocots): most common weeds; have a
single seed leaf (cotyledon) when they germinate;
narrow leaves with parallel viens
Ch.2 Distinguish grasses -Broadleaves (Dicots): have 2 seed leaves when
from broadleaf plants they germinate; veins form a net-like or branching
and woody from pattern; can be broken down into Woody and
herbaceous plants Herbaceous plants
--> Woody: have thickened outer layer on stems
(bark)
--> Herbaceous: lacks bark
-Annuals: live less than 12 months; most seeds
germinate the following year, some are dormant
taking several years; prolific seed producers.
--> Summer Annuals: germinate from seed in spring,
flower/produce seeds in summer, die in late
summer/early fall.
--> Winter Annuals: germinate from seed in fall,
Ch. 2 Describe the life
overwinter as low-growing plants, flower/produce
cycles and propagation
seeds in spring, then die.
of annual, biennial, and
-Biennials: live for 2 growing seasons; germinate
perennial plants
from seeds in spring or summer and produce a
rosette of leaves, overwinter in rosette stage, flower
the following year, produce seed, and die.
-Perennials: live for at least 2 years, sometimes
longer; may reproduce by seed or spread
vegetatively (stolons, rhizomes, spreading roots,
tubers, bulbs)
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-Annuals: kill the whole shoot by tillage or with
herbicides during seeding stage.
--> Summer Annuals: kill with tillage or herbicides
Ch.2 Outline what is
during seeding stage.
needed to kill annual,
--> Winter Annuals: kill with tillage or herbicides
biennial, and perennial
during seeding stage.
weeds and when it is
-Biennials: best controlled with herbicides during
easiest to do so
rosette stage.
Perennials: controlled by repeatedly tilling or with
herbicides that translocates to all plant parts.
-Preplant: done before planting.
-Preemergence: usually (not always) done after
Ch.2 Distinguish the
planting but before plants/weeds emerge.
difference between
-Postemergence: done selectively after
preplant, preemergence,
plants/weeds emerge; timing is important; if the
and postemergence
desirable plant is smaller or larger than the growth
herbicide applications
stage listed on the label, it may be damaged by the
herbicide.
-Fine textured soils or soils with high organic matter
often require higher herbicide rates than soils with
coarser texture or low organic matter.
Ch.2 Explain the effects
-Some herbicides prohibit product use on certain
of soil texture, organic
soils with a light texture, low organic matter, or high
matter, and pH and
pH to guard against excessive plant damage or
herbicide persistence on
herbicide persistence.
herbicide activity
-Excessive leaching on sandy soils with shallow
water tables may result in groundwater
contamination.
-Apply spray to lower 18 inches of stems
Ch.2 Describe how and -Thoroughly wet stem, crown, and exposed roots
when to make a basal- -Can make treatments throughout the year as long
bark treatment as the bark is not wet or when snow or water
prevent spraying to the ground
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