Answers Graded A+ 2024.
what system is an appropriate practice to keep populations below the economic injury
level in crops and below the aesthetic injury level in non-crops or ornamental plantings?
- correct answer. integrated pest managements (IPM)
what cultural control tactic is the best defense against invading weeds to insure a
dense, vigorous stand of turf grass? - correct answer. proper fertilization and
mowing
what should applicators/ operators take into account when selecting and applying
pesticides? - correct answer. Are there other non-chemical controls available. Has
scouting indicated the pest populations is high enough. Is it the correct time to apply
and get control. (All of the above).
what is unique about an insect that undergoes incomplete development or (simple
metamorphosis) such as a grasshopper? - correct answer. They undergo 3 life
stages (Egg-Nymph-Adult) where the nymph cannot fly and cannot reproduce.
what stage of insect development is often called the "resting stage" because it cannot
feed and usually not very active? - correct answer. Pupa
what can cause a non-infectious disease in ornamental plants? - correct answer.
temperature and moisture extremes
what is a characteristic of infectious plant diseases in crops? - correct answer.
Pathogens multiply on or within the host plant and can be transmitted from one plant to
another.
How do applicators, operators, plant pathologist and others recognize a plant that is
diseased? - correct answer. By recognizing symptoms such as leaf spot or
chlorosis.
what growth stage of weeds is easiest to control with herbicides or cultivation? - correct
answer. weeds that are in the seedling stage
, which of the following weeds emerge from seed that germinate in the fall, overwinter as
seedlings, flower, produce seed and die in the early summer. - correct answer.
winter annuals
to control the majority of perennial weeds what treatment is usually recommended? -
correct answer. A systemic herbicide applied at early bud to bloom stage or early fall
when plants are replenishing food supplies below ground.
which of the following conditions are not necessary for a plant disease to develop in
crops? - correct answer. There must be a susceptible host and pathogen, time for
disease to develop and a favorable environment. (Diseases do not need an insect
vector)
what portion of the pesticide formulation is effective against target pests? - correct
answer. Active ingredient
what term indicates solvents, emulsifiers, and adjuvants in a pesticide formulation? -
correct answer. insert ingredients
what type of pesticide would you select to control a specific pest with little or no injury to
related organisms such as desirable plants or beneficial insects? - correct answer.
Selective pesticide
How many lbs. of active ingredient are in a 20 lb. container of OUTOFHERE 50WP. -
correct answer. 10 lbs.
what type of pesticides do not move within the host plant and require thorough coverage
for effective control. - correct answer. Contact pesticide
what characteristics do wettable powders and water dispersing granules have in
common? - correct answer. form a suspension that requires constant agitation and
are abrasive to pumps.
which of the following statements describing adjuvants is true? - correct answer.
Generally have little or no pesticidal effect
How does a drift control addictive reduce or minimize off target pesticide damage? -
correct answer. Increases the size of spray droplets.
why would an applicator add a buffering agent to a tank mix of chemicals? - correct
answer. To adjust the PH of the carrier
what terminology is used to describe the situation where two or more pesticides can be
safely mixed and applied in combination without unfavorably affecting toxicity, physical,
properties or plant safety? - correct answer. Compatible