3A Turfgrass Pest Management Study Guide Exam
Questions and Guide Answers
100% Verified Graded A+
1. Varieties of grass containing endophyte fungi are an example of
Answer: Plant resistance.
2. Raking, thatch removal and aeration are examples of
Answer: Cultural controls.
3. Hand removal, traps, barriers and repellents are examples of
Answer: Mechanical and physical controls.
4. Example of a turfgrass disease that can be managed with hand removal
techniques
Answer: Slime mold.
5. Turf cannot at the same time benefit from biological control methods and be
pest free because
Answer: There must be a low level of pest or prey insects for the predators to feed on.
,6. Why is it important to use both short term suppression and long term
maintenance tactics in pest management?
Answer: Usually otters a quick fix, but the pest population will rebuild. Maintenance must be used to
reduce pest populations permanently.
7. How can you help maintain existing populations of beneficial organisms in
a turf stand?
Answer: By making pesticide applications only when needed.
8. What is the most commonly used microbial insecticide? On what insect
larvae is it effective?
Answer: Bacillus thuringiensis, or Bt, used to control caterpillars.
9. Are microbial insecticides best used for short or long term suppression of pest
populations?
Answer: Long term. Microbial insecticides are slower acting and do not kill all of the pests at once, which
allows there to be food for other beneficial organisms.
10. Ways to classify pesticides
Answer: Types of pests Pesticide chemistry
Mode of action
Pesticide formulation.
,11. Benefits of systemic herbicides
Answer: Superior in treating persistent perennial weeds, kills both above ground and below ground
parts of plant.
12. Benefits of broad spectrum pesticides
Answer: Can be used to control several pests, but more likely to be hazardous to non target organisms.
13. Benefits of residual pesticides
Answer: Good for use when the goal is to reduce the number of applica-tions required to control
persistent pests.
14. Benefits of contact herbicides
Answer: Does not kill the underground parts of plant.
15. Basic principles of managing pests in turfgrass
Answer: 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.
16. Steps of IPM for turfgrass
, Answer: 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
Evaluate the ettectiveness of the strategy and keep records.
17. Methods for monitoring and detecting turfgrass pests
Answer: Visually Cottee can flush
White paper test
Root sampling
Disclosing solution
18. Explain why keeping track of degree day accumulations is more useful for
monitoring pest activity than going by calendar dates
Answer: Insects, diseases and weeds develop based on heat units. The accumulation of heat units
varies from year to year.
19. Explain how knowing the species or variety of turfgrass in a stand can help
in pest diagnosis
Answer: Certain diseases and insect pests will attect certain species of turfgrass and will not attect others.
20. Economic injury threshold
Answer: The density of pests at which the cost to manage the pest is equal to the losses caused by that
pest.
Questions and Guide Answers
100% Verified Graded A+
1. Varieties of grass containing endophyte fungi are an example of
Answer: Plant resistance.
2. Raking, thatch removal and aeration are examples of
Answer: Cultural controls.
3. Hand removal, traps, barriers and repellents are examples of
Answer: Mechanical and physical controls.
4. Example of a turfgrass disease that can be managed with hand removal
techniques
Answer: Slime mold.
5. Turf cannot at the same time benefit from biological control methods and be
pest free because
Answer: There must be a low level of pest or prey insects for the predators to feed on.
,6. Why is it important to use both short term suppression and long term
maintenance tactics in pest management?
Answer: Usually otters a quick fix, but the pest population will rebuild. Maintenance must be used to
reduce pest populations permanently.
7. How can you help maintain existing populations of beneficial organisms in
a turf stand?
Answer: By making pesticide applications only when needed.
8. What is the most commonly used microbial insecticide? On what insect
larvae is it effective?
Answer: Bacillus thuringiensis, or Bt, used to control caterpillars.
9. Are microbial insecticides best used for short or long term suppression of pest
populations?
Answer: Long term. Microbial insecticides are slower acting and do not kill all of the pests at once, which
allows there to be food for other beneficial organisms.
10. Ways to classify pesticides
Answer: Types of pests Pesticide chemistry
Mode of action
Pesticide formulation.
,11. Benefits of systemic herbicides
Answer: Superior in treating persistent perennial weeds, kills both above ground and below ground
parts of plant.
12. Benefits of broad spectrum pesticides
Answer: Can be used to control several pests, but more likely to be hazardous to non target organisms.
13. Benefits of residual pesticides
Answer: Good for use when the goal is to reduce the number of applica-tions required to control
persistent pests.
14. Benefits of contact herbicides
Answer: Does not kill the underground parts of plant.
15. Basic principles of managing pests in turfgrass
Answer: 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.
16. Steps of IPM for turfgrass
, Answer: 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
Evaluate the ettectiveness of the strategy and keep records.
17. Methods for monitoring and detecting turfgrass pests
Answer: Visually Cottee can flush
White paper test
Root sampling
Disclosing solution
18. Explain why keeping track of degree day accumulations is more useful for
monitoring pest activity than going by calendar dates
Answer: Insects, diseases and weeds develop based on heat units. The accumulation of heat units
varies from year to year.
19. Explain how knowing the species or variety of turfgrass in a stand can help
in pest diagnosis
Answer: Certain diseases and insect pests will attect certain species of turfgrass and will not attect others.
20. Economic injury threshold
Answer: The density of pests at which the cost to manage the pest is equal to the losses caused by that
pest.
