3A Turfgrass Pest Management Study
Guide Questions and Correct Answers/
Latest Update / Already Graded
Varieties of grass containing endophyte fungi are an example of:
Ans: Plant resistance.
Raking, thatch removal and aeration are examples of:
Ans: Cultural controls.
Hand removal, traps, barriers and repellents are examples of:
Ans: Mechanical and physical controls.
Example of a turfgrass disease that can be managed with hand
removal techniques:
Ans: Slime mold.
Turf cannot at the same time benefit from biological control methods
and be pest free because:
Ans: There must be a low level of pest or prey insects for the
predators to feed on.
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Why is it important to use both short term suppression and long term
maintenance tactics in pest management?
Ans: Usually offers a quick fix, but the pest population will
rebuild. Maintenance must be used to reduce pest populations
permanently.
How can you help maintain existing populations of beneficial
organisms in a turf stand?
Ans: By making pesticide applications only when needed.
What is the most commonly used microbial insecticide? On what insect
larvae is it effective?
Ans: Bacillus thuringiensis, or Bt, used to control caterpillars.
Are microbial insecticides best used for short or long term suppression
of pest populations?
Ans: Long term. Microbial insecticides are slower acting and do
not kill all of the pests at once, which allows th ere to be food
for other beneficial organisms.
Ways to classify pesticides:
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Ans: Types of pests
Pesticide chemistry
Mode of action
Pesticide formulation.
Benefits of systemic herbicides:
Ans: Superior in treating persistent perennial weeds, kills both
above ground and below ground parts of plant.
Benefits of broad spectrum pesticides:
Ans: Can be used to control several pests, but more likely to be
hazardous to non target organisms.
Benefits of residual pesticides:
Ans: Good for use when the goal is to reduce the number of
applications required to control persistent pests.
Benefits of contact herbicides:
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Ans: Does not kill the underground parts of plant.
Basic principles of managing pests in turfgrass:
Ans: Produce healthy plants that can reduce or better tolerate
pest attack
Identify what is damaging the turf
Expect some pests and tolerate some damage
Using pesticides as a last resort.
Steps of IPM for turfgrass:
Ans: Detect pest
Identify pest
Determine the amount of damage and whether it is below or
above the tolerance thresholds
Select and use a management tactic
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