EXAMINATION TEST 2026 COMPLETE
QUESTIONS AND CORRECT ANSWERS
◉ plant resistance. Answer: Varieties of grass containing endophyte
fungi are one example
◉ Mechanical and physical resistance. Answer: Includes hand removal,
traps, barriers and repellents
◉ Cultural control. Answer: includes raking, thatch removal and
aeration
◉ Give one example of a weed situation that can be managed with hand
removal techniques. Answer: In a new stand of grass, hand removal of
weeds may be necessary to prevent damage to the young grass plants
◉ explain why turf cannot at the same time benefit from biological
control methods and be pest free. Answer: there must be a low level of
pest or prey insects for the predators to feed on
,◉ How can you help maintain existing populations of beneficial
organisms in a turf stand? Answer: by making pesticide applications
only when needed
◉ Are microbial insecticides best used for short term suppression or
long term maintenance of pest populations? Why? Answer: Long term
maintenance. Microbial insecticides are slower acting and do not kill all
of the pest at once, which allows there to be food for other beneficial
organisms.
◉ List four ways to classify pesticides. Answer: Type of pest
Pesticide chemistry
Mode of action
Pesticide formulation
◉ Broad-spectrum pesticide. Answer: Can be used to control several
pests, but more likely to be hazardous to non target organisms.
◉ Residual pesticide. Answer: Good for use when the goal is to reduce
the number of applications required to control persistent pests
◉ Systemic herbicide. Answer: Superior in treating persistent perennial
weeds, kills both aboveground and below ground parts of the plant
, ◉ Contact herbicide. Answer: Does not kill the underground plant parts
◉ 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
◉ Explain how knowing the species or variety of turf grass in a stand
can help in pest diagnosis. Answer: Certain diseases and insect pests will
affect certain species of turf grass and will not affect others
◉ What three categories of grass species in the United States and
Canada? Which is Michigan, and why? Answer: Cool season, transition,
warm season
Cool grass in Michigan
◉ List examples of grass species in Michigan. Answer: Kentucky
bluegrass
Perennial ryegrass
Creeping bent grass
◉ Does the rate of photosynthesis increase or decrease as the
temperature increases? How does the temperature stress grass plants?
Answer: Food production decreases but the amount of oxygen increases