- | Page
PESTICIDE LICENSE ORNAMENTAL AND TURF
FOR NC PRE TEST FULLY SOLVED.
regular brown, yellow, orange patches 1 to ft in diameter no fertilizer 6 wks. before winter dormancy
Question 18: systemic fungicides
CORRECT ANSWER : translocate w/in plant and can control
fungi already in plant provides longer periods of residual disease control, absorbed through cuticle, not washed off by rain
Question 19: Protectant fungicide
CORRECT ANSWER : fungicides that are used to protect
uninfected plants by inhibiting development of spores or mycelia on the surface, but is ineffective against established infections
Question 20: Dollar spot
CORRECT ANSWER : circular brown to straw-colored sunken
spots about the size of a silver dollar; may be mistaken for brownpatch except for lesions on leaf blades of live plants near border of patch
- | Page
Question 21: Fairy ring
What disease has the following characteristics: circular bands of
dark-green, fast-growing turf that are often accompanied by mushrooms or puffballs?
CORRECT ANSWER : Fairy ring
Question 22: pink snow mold
CORRECT ANSWER : during wet conditions this disease
exhibits a white to pinkish cover of mycelia, the mycelia are usually
Question 23: Gray leaf spot
CORRECT ANSWER : primarily affects St. Augustinegrass;
likes moisture, warm weather, and shade; roundish tan colored lesions with brown or purplish borders of leaf blades; leaves may wither and die
Question 24: Helminthosporium disease
CORRECT ANSWER : Affects kentucky bluegrass, fescue,
perennial ryegrass, and bermuda
- | Page
melting out, leaf spot, crown and root rot
Question 25: Pythium blight
CORRECT ANSWER : Round to irregular, dark, water soaked,
greasy or slimy, sunken patches of matted grass 6 to 12 inches wide. Develops rapidly in hot or cold very wet calm weather
Question 26: Spring dead spot
CORRECT ANSWER : Bermudagrass
Question 27: Nematodes
CORRECT ANSWER : A microscopic, wormlike animal that
can be parasitic on plants
Question 28: Fungi
CORRECT ANSWER : cause leaf spots, wilts, dieback, rots and
cankers
Question 29: Bacteria
CORRECT ANSWER : cause shoot blights, leaf spots, soft
roots, and galls
- | Page
Question 30: Viruses
CORRECT ANSWER : cause stunting, discoloration,
malformation of plant tissues no control
Question 31: Food source for most nematodes
CORRECT ANSWER : microorganisms
Question 32: most common pathogen of disease of turf and
ornamentals
CORRECT ANSWER : fungi
Question 33: disadvantages of fungicides
CORRECT ANSWER : high costs, toxicity, and short periods of
control