Virginia Polytechnic Institute and State University PPWS 4264
Virginia Commercial Pesticide Applicators CORE exam
Questions and Correct Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant Download Pdf
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C
Terms in this set (86)
Explain the difference between key pests, Key pests are nearly always present and require regular
occasional pests and secondary pests control. occasional pests are migratory or cyclical and require
intermittent control. secondary pests require control only
under certain conditions, such as the elimination of a key
pest or the absence of a natural host.
what should you do first if you see damage identify the cause
to a plant, animal, or valuable product/
what should you do first if you discover a make sure the pest is actually responsible for the damage.
pest that may need to be controlled? then accurately identify the pest
how can pest identification help you it allows you to determine basic information about the pest,
develop a good pest control strategy? including its life-cycle and when it is most susceptible to
control measures.
name the 5 basic pest groups weeds, parasites and diseases, mollusks, arthropods, and
vertebrates.
why do weeds present such a challenge to weeds are often hardy, aggressive, and tolerant of harsh
pest managers? conditions. many produce large numbers of seeds which can
spread over a wide area and remain dormant for a long time.
how can you tell a monocot from a dicot? monocots (sedges and grasses) have one cotyledon, parallel
leaf veins, flower parts in multiples of 3 and fibrous roots.
Dicots have 2 cotyledons, broad leaves with netted veination,
and flower parts in multiples of 4 and 5 and usually have
taproots.
, name the pathogens that cause most plant fungi, bacteria, mycoplasma, and viruses
and animal diseases
what are the symptoms of viral stunting, yellow rings on leaves, wilting, and mosaic patterns
plant diseases
how do plant parasitic nematodes harm by attacking the roots, stems and leaves. nematode root
plants? feeding interferes with a plants ability to take up water and
nutrients. infected plants wilt and seem to be suffering from a
lack of water or nutrients.
how do mollusks harm plants? by feeding on foliage and fruit. mollusks reduce the value of
commercial produce if they feed on harvested plants and
fruit.
what are arthropods? how do they differ arthropods are animals with segmented bodies and jointed
from vertebrates? appendages. Arthropods have an external skeleton and may
have specialized appendages such as sucking tubes, chewing
mouth parts, antennae, and pincers. they have no backbones
like vertebrates
what is the difference between gradual and gradual metamorphosis includes 3 stages: egg, nymph and
complete metamorphosis? why is it adult. there is no pupa stage. complete metamorphosis
important to know the life cycle stage of an includes 4 stages: egg, larva, pupa, and adult. insects that
insect? develop via complete metamorphosis change body form.
larvae may not look at all like adults within the same species.it
is very important to recognize the damaging stage for
best
treatment results. many insect are pests in one stage but not
another. especially larval form.
what are beneficial insects? and why are insects that are pollinators (bees and butterflies) or pest
they important to agriculture? predators (ladybeetles and lacewings). with out pollinators
many types of plants could not reproduce and beneficial
predators feed on harmful insects, mites, and weeds.
how do mites harm plants? They suck the plant juices, eat the underside of leaves, and
disfigure the plants they feed on.
what is an economic threshold? the level at which economic losses caused by pest damage, if
the pest population continued to grow, would be greater than
the cost of controlling the pests. reaching an economic
threshold usually prompts some kind of pest control action.
how are thresholds important to a sound setting a treatment or action threshold is essential to prevent
pest control strategy? the pests in an area from causing unacceptable injury or
harm. action thresholds vary: sometimes one pest is too
many (like a rat in a food processing facility). Thresholds
help producers
and applicators weigh the cost of pest control against the
cost of a pest infestation
Virginia Commercial Pesticide Applicators CORE exam
Questions and Correct Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant Download Pdf
Students also studied
Flashcard sets Study guides
C
Terms in this set (86)
Explain the difference between key pests, Key pests are nearly always present and require regular
occasional pests and secondary pests control. occasional pests are migratory or cyclical and require
intermittent control. secondary pests require control only
under certain conditions, such as the elimination of a key
pest or the absence of a natural host.
what should you do first if you see damage identify the cause
to a plant, animal, or valuable product/
what should you do first if you discover a make sure the pest is actually responsible for the damage.
pest that may need to be controlled? then accurately identify the pest
how can pest identification help you it allows you to determine basic information about the pest,
develop a good pest control strategy? including its life-cycle and when it is most susceptible to
control measures.
name the 5 basic pest groups weeds, parasites and diseases, mollusks, arthropods, and
vertebrates.
why do weeds present such a challenge to weeds are often hardy, aggressive, and tolerant of harsh
pest managers? conditions. many produce large numbers of seeds which can
spread over a wide area and remain dormant for a long time.
how can you tell a monocot from a dicot? monocots (sedges and grasses) have one cotyledon, parallel
leaf veins, flower parts in multiples of 3 and fibrous roots.
Dicots have 2 cotyledons, broad leaves with netted veination,
and flower parts in multiples of 4 and 5 and usually have
taproots.
, name the pathogens that cause most plant fungi, bacteria, mycoplasma, and viruses
and animal diseases
what are the symptoms of viral stunting, yellow rings on leaves, wilting, and mosaic patterns
plant diseases
how do plant parasitic nematodes harm by attacking the roots, stems and leaves. nematode root
plants? feeding interferes with a plants ability to take up water and
nutrients. infected plants wilt and seem to be suffering from a
lack of water or nutrients.
how do mollusks harm plants? by feeding on foliage and fruit. mollusks reduce the value of
commercial produce if they feed on harvested plants and
fruit.
what are arthropods? how do they differ arthropods are animals with segmented bodies and jointed
from vertebrates? appendages. Arthropods have an external skeleton and may
have specialized appendages such as sucking tubes, chewing
mouth parts, antennae, and pincers. they have no backbones
like vertebrates
what is the difference between gradual and gradual metamorphosis includes 3 stages: egg, nymph and
complete metamorphosis? why is it adult. there is no pupa stage. complete metamorphosis
important to know the life cycle stage of an includes 4 stages: egg, larva, pupa, and adult. insects that
insect? develop via complete metamorphosis change body form.
larvae may not look at all like adults within the same species.it
is very important to recognize the damaging stage for
best
treatment results. many insect are pests in one stage but not
another. especially larval form.
what are beneficial insects? and why are insects that are pollinators (bees and butterflies) or pest
they important to agriculture? predators (ladybeetles and lacewings). with out pollinators
many types of plants could not reproduce and beneficial
predators feed on harmful insects, mites, and weeds.
how do mites harm plants? They suck the plant juices, eat the underside of leaves, and
disfigure the plants they feed on.
what is an economic threshold? the level at which economic losses caused by pest damage, if
the pest population continued to grow, would be greater than
the cost of controlling the pests. reaching an economic
threshold usually prompts some kind of pest control action.
how are thresholds important to a sound setting a treatment or action threshold is essential to prevent
pest control strategy? the pests in an area from causing unacceptable injury or
harm. action thresholds vary: sometimes one pest is too
many (like a rat in a food processing facility). Thresholds
help producers
and applicators weigh the cost of pest control against the
cost of a pest infestation
