Exam (elaborations)
FNGLA PLANT PROBLEMS
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FNGLA PLANT PROBLEMS
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FNGLA PLANT PROBLEMSDiagnosis - Answers -Identification of the cause of plant problems
What sources provide help with nursery & landscape professionals? - Answers -
University of Florida's Institute of Food and Agriculture Sciences, Cooperative Extension
Service, and Florida Department of Agriculture & Consumer Services Division of Plant
Industry
Almost all aphids are __________, they reproduce without mating and seldom lay eggs,
instead giving birth to live young. - Answers -Female
How many daughters does a female aphid produce in their lifetime? - Answers -50-100
How long does it take a daughter aphid to reproduce? - Answers -6-8 days
The presence of shiny black spots of excrement on the underside of leaves is a good
indication that which kind of bug is present? - Answers -Lacebug
How should you check flowers and leaves that are suspected of infestation? - Answers -
Shake them over a white piece of paper
Which pest is not an insect but is closely related to spiders, ticks and scorpions and
suck plant juices with their piercing-sucking mouthparts? - Answers -Spider Mites
Which pests are considered most serious in turf grass? - Answers -Mole Crickets
What host grasses are mole crickets favorite? - Answers -Bahia & Bermuda
How do mole crickets affect grasses? - Answers -Tunnel through the soil near the soil
near the surface, severing roots and uprooting the grass
Viroids - Answers -Similar to a virus, but lack a protein encapsulation, containing only
RNA and are the smallest known infectious agents causing plant disease
How are viroids spread? - Answers -Implements, pruning tools or other mechanical
devices
Where does Brown Patch Disease occur? - Answers -In areas with ample surface
moisture during warm weather
What are the symptoms of brown patch disease? - Answers -Light tan lesions on leaf
blade tip
, What grasses are most susceptible to brown patch disease? - Answers -St. Augustine,
carpet, rye, centipede and zoysia
A Nematode Sample Kit for sending samples to the Florida Nematode Assay Laboratory
is available at ____________________ county offices. - Answers -Florida Cooperative
Extension Service
What type of conditions favor development of very high populations of nematodes? -
Answers -Sandy soil and a long growing season
What are symptoms of nematode injury to turf? - Answers -Wilting under moderate
moisture stress, slow recovery of wilted areas after rain or irrigation and "melting out"
(thinning or gradual decline) of grass cover
What are symptoms of nematode injury to foliage? - Answers -Yellow, or other
symptoms of nutrient deficiencies
When is nematode damage much more obvious? - Answers -During periods of high
stress such as extreme heat or drought
How are weeds classified? - Answers -Grasses, broadleaves, sedges and life cycle
What are characteristics of true grass weeds? - Answers -Hollow, rounded stems and
nodes (joints) that are closed and hard. Leaf blades have parallel veins that are longer
than wide & alternate
What are examples of true grass weeds? - Answers -Crabgrass, Goosegrass,
Crowfootgrass, Sandbur, Annual Bluegrass, Torpedograss and Vaseygrass
What steps are involved in repeated or modified IPM? - Answers
-Prevention/avoidance, monitoring, decision making, intervention, evaluation.
IPM includes the judicious use of pesticides in ___________with other pest
management practices. - Answers -Careful consideration
Under IPM, emphasis should be placed on what what preventative practices? - Answers
-Emphasis should be placed on preventative practices such as sanitation ( weed
control< removal of plant
During the Spring , Summer and Fall how many times should plants be checked per
week for Pests? - Answers -Plants should be examined weekly during the spring
summer and fall.
Why is full coverage of the under side of leaves so important when using non chemical
pest control? - Answers -Thorough coverage of the under side of leaves is very
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