CSS 202 Exam 3 with complete solutions
What Kentucky bluegrass cultivar was primarily responsible for starting the sod
industry? - ANSWER- Merion
What disease led to the recommendation that Kentucky bluegrass plantings
should contain at least three cultivars? - ANSWER- stripe smut
Any particular turfgrass cultivar is either immune or susceptible to stripe smut;
there is not particular resistance to the causal pathogen/ - ANSWER- True
With properly selected cultivars and timely mowing, fertilization, and irrigation,
which of the following diseases still have the potential to decimate a lawn on a
site that receives ample sunlight? (multiple)
- brown patch
- powdery mildew
- red thread
- pythium blight
- slime mold
- fuzzy leaf - ANSWER- brown patch and pythium blight
A turf disease is most likely to become lethal to plants when ... - ANSWER-
pathogen mycelium attack and parasitize crown tissue
What disease first limited the use of Kentucky bluegrass? - ANSWER- melting out
Prior to 1960, what specie(s) comprised most home lawns in the northern part of
the U.S.? - ANSWER- creeping bentgrass and fineleaf fescue
A golf course superintendent discovered the apparent mutation that was
subsequently marketed as Merion Kentucky Bluegrass. - ANSWER- True
, When managing necrotic ring spot, it's critical to water deeply no more than twice
a week. - ANSWER- False
Currently, the disease of primary concern on Kentucky bluegrass lawns is
necrotic ring spot. - ANSWER- True
Infiltration rate is dependent upon which of the following factors? - ANSWER- soil
structure, amount of thatch, soil texture, mowing height
Deep and infrequent watering practices suppress any existing chinch bug
infestations. - ANSWER- False
Rain shut-off sensors need to be monitored to make sure they are working
properly. - ANSWER- True
To avoid surface runoff and/or standing water, the irrigation rate should be equal
to or less than the ________. - ANSWER- infiltration rate
In Michigan, irrigation system backflow preventers must be installed by a
licensed plumber. - ANSWER- True
Roots tend to grow from a dry soil toward a wet soil. - ANSWER- False
Scalding damage caused by the lensing effect of water droplets on turfgrass
blades is insignificant. - ANSWER- True
Deep and infrequent watering generally favors deeper rooting of turfgrasses. -
ANSWER- False
For effective distribution uniformity, irrigation heads should be positioned so that
there is no less than _________ overlap - ANSWER- 80%
Which of the following are effective strategies for reduce costs associated with
irrigation. - ANSWER- cycle application times if surface runoff is observed; avoid
watering when windy; lower your height of cut; put areas with differing soil
textures on separate zones; install a designated meter for irrigation water
For lawns, the texture of soil used as topdressing material should be slightly
coarser than the soil of the surface to which the material is being applied. -
ANSWER- True
What Kentucky bluegrass cultivar was primarily responsible for starting the sod
industry? - ANSWER- Merion
What disease led to the recommendation that Kentucky bluegrass plantings
should contain at least three cultivars? - ANSWER- stripe smut
Any particular turfgrass cultivar is either immune or susceptible to stripe smut;
there is not particular resistance to the causal pathogen/ - ANSWER- True
With properly selected cultivars and timely mowing, fertilization, and irrigation,
which of the following diseases still have the potential to decimate a lawn on a
site that receives ample sunlight? (multiple)
- brown patch
- powdery mildew
- red thread
- pythium blight
- slime mold
- fuzzy leaf - ANSWER- brown patch and pythium blight
A turf disease is most likely to become lethal to plants when ... - ANSWER-
pathogen mycelium attack and parasitize crown tissue
What disease first limited the use of Kentucky bluegrass? - ANSWER- melting out
Prior to 1960, what specie(s) comprised most home lawns in the northern part of
the U.S.? - ANSWER- creeping bentgrass and fineleaf fescue
A golf course superintendent discovered the apparent mutation that was
subsequently marketed as Merion Kentucky Bluegrass. - ANSWER- True
, When managing necrotic ring spot, it's critical to water deeply no more than twice
a week. - ANSWER- False
Currently, the disease of primary concern on Kentucky bluegrass lawns is
necrotic ring spot. - ANSWER- True
Infiltration rate is dependent upon which of the following factors? - ANSWER- soil
structure, amount of thatch, soil texture, mowing height
Deep and infrequent watering practices suppress any existing chinch bug
infestations. - ANSWER- False
Rain shut-off sensors need to be monitored to make sure they are working
properly. - ANSWER- True
To avoid surface runoff and/or standing water, the irrigation rate should be equal
to or less than the ________. - ANSWER- infiltration rate
In Michigan, irrigation system backflow preventers must be installed by a
licensed plumber. - ANSWER- True
Roots tend to grow from a dry soil toward a wet soil. - ANSWER- False
Scalding damage caused by the lensing effect of water droplets on turfgrass
blades is insignificant. - ANSWER- True
Deep and infrequent watering generally favors deeper rooting of turfgrasses. -
ANSWER- False
For effective distribution uniformity, irrigation heads should be positioned so that
there is no less than _________ overlap - ANSWER- 80%
Which of the following are effective strategies for reduce costs associated with
irrigation. - ANSWER- cycle application times if surface runoff is observed; avoid
watering when windy; lower your height of cut; put areas with differing soil
textures on separate zones; install a designated meter for irrigation water
For lawns, the texture of soil used as topdressing material should be slightly
coarser than the soil of the surface to which the material is being applied. -
ANSWER- True
