PRINCIPALS OF TURF GRASS
MANAGEMENT EXAM QUESTIONS WITH
CORRECT ANSWERS
How do nematodes damage plants? - Answer-Draw out cellular content from plant
roots, inject toxic substances into root
What are the parts of the disease triangle? - Answer-The disease-causing organism or
pathogen, a susceptible turfgrass host, and favorable environmental conditions for
disease development.
What are the basic steps or factors that should be used or considered in diagnosing a
turfgrass disease? - Answer-Turfgrass identification, symptoms of the disease, recent
environmental conditions, and signs of the pathogen.
What are the four primary agents or pathogens of infectious diseases? - Answer-
Bacteria, viruses, fungi and nematodes
How does a fungal organism enter a turfgrass plant? - Answer-Wounds, stomates,
make their own entry into tissue
Brown patch is encouraged by what cultural practices? - Answer-High nitrogen
fertilization, frequent irrigation
The severity of dollar spot can be reduced by what cultural practice(s)? - Answer-Proper
nitrogen fertility, proper soil moisture.
Select the turfgrass species that is most vulnerable to gray leaf spot. - Answer-St.
Augustinegrass
What fungus produces black spores that rub off as a sooty dust if touched? - Answer-
Striped smut and flag smut
What disease is most severe on turf growing under shaded conditions? Hint: The leaves
of the turfgrass look as though they have been dusted with lime or flour - Answer-
Powdery Mildew
Spring dead spot is specific to what turfgrass? - Answer-Bermudagrass
Name the disease(s) associated with snow and/or cool temperatures. - Answer-Gray
snow mold, pink snow mold
MANAGEMENT EXAM QUESTIONS WITH
CORRECT ANSWERS
How do nematodes damage plants? - Answer-Draw out cellular content from plant
roots, inject toxic substances into root
What are the parts of the disease triangle? - Answer-The disease-causing organism or
pathogen, a susceptible turfgrass host, and favorable environmental conditions for
disease development.
What are the basic steps or factors that should be used or considered in diagnosing a
turfgrass disease? - Answer-Turfgrass identification, symptoms of the disease, recent
environmental conditions, and signs of the pathogen.
What are the four primary agents or pathogens of infectious diseases? - Answer-
Bacteria, viruses, fungi and nematodes
How does a fungal organism enter a turfgrass plant? - Answer-Wounds, stomates,
make their own entry into tissue
Brown patch is encouraged by what cultural practices? - Answer-High nitrogen
fertilization, frequent irrigation
The severity of dollar spot can be reduced by what cultural practice(s)? - Answer-Proper
nitrogen fertility, proper soil moisture.
Select the turfgrass species that is most vulnerable to gray leaf spot. - Answer-St.
Augustinegrass
What fungus produces black spores that rub off as a sooty dust if touched? - Answer-
Striped smut and flag smut
What disease is most severe on turf growing under shaded conditions? Hint: The leaves
of the turfgrass look as though they have been dusted with lime or flour - Answer-
Powdery Mildew
Spring dead spot is specific to what turfgrass? - Answer-Bermudagrass
Name the disease(s) associated with snow and/or cool temperatures. - Answer-Gray
snow mold, pink snow mold
