Ornamental and Turfgrass Pest Control
Category 3
Stem rots are more prevalent on:
A. fruit trees
B. herbaceous ornamentals
C. plants under drought stress
D. pine trees - Correct Answer ✔️✔️B. herbaceous ornamentals
A small, discolored, water-soaked spot on a limb usually indicates:
A. the beginning of a canker
B. the tree is over-watered
C. a black knot is forming
D. the plant has a vascular wilt infection - Correct Answer ✔️✔
️A. the beginning of a canker
,Black knots are most often found on:
A. rose stems
B. geraniums and petunias
C. the underside of leaves
D. fruit trees - Correct Answer ✔️✔️D. fruit trees
If a mimosa tree is diagnosed with a severe case of vascular wilt, the
best solution is to:
A. treat the tree with an appropriate fungicide
B. irrigate until symptoms disappear
C. remove the tree, including roots
D. prune out the disease parts - Correct Answer ✔️✔️C. remove
the tree, including roots
Which of the following is not a symptom of a vascular wilt disease?
A. discolored streaks occur in the wood of affected branches
,B. usually only one side of the plant is first affected
C. individual limbs and branches wilt and die back
D. Leaf buds are distorted - Correct Answer ✔️✔️D. leaf buds are
distorted
Crown Gall is caused by:
A. overfertilization
B. fungi
C. bacteria
D. viruses - Correct Answer ✔️✔️C. bacteria
Shothole- type symptoms are caused by:
A. nematode feeding
B. bacterial leaf spots
C. leaf galls
, D. powdery mildew - Correct Answer ✔️✔️B. bacterial leaf spots
Spread of fireblight is most rapid:
A. during wet weather
B. when susceptible plants are in bloom
C. in midsummer
D. when plants are dormant - Correct Answer ✔️✔️B. when
susceptible plants are in bloom
The best way to prevent the fire blight bacterium from overwintering is
to:
A. spray the ground under the tree with a bacteriacide
B. treat the roots with a fungicide drench
C. remove fallen fruit
D. prune out disease branches - Correct Answer ✔️✔️D. prune
out disease branches
Category 3
Stem rots are more prevalent on:
A. fruit trees
B. herbaceous ornamentals
C. plants under drought stress
D. pine trees - Correct Answer ✔️✔️B. herbaceous ornamentals
A small, discolored, water-soaked spot on a limb usually indicates:
A. the beginning of a canker
B. the tree is over-watered
C. a black knot is forming
D. the plant has a vascular wilt infection - Correct Answer ✔️✔
️A. the beginning of a canker
,Black knots are most often found on:
A. rose stems
B. geraniums and petunias
C. the underside of leaves
D. fruit trees - Correct Answer ✔️✔️D. fruit trees
If a mimosa tree is diagnosed with a severe case of vascular wilt, the
best solution is to:
A. treat the tree with an appropriate fungicide
B. irrigate until symptoms disappear
C. remove the tree, including roots
D. prune out the disease parts - Correct Answer ✔️✔️C. remove
the tree, including roots
Which of the following is not a symptom of a vascular wilt disease?
A. discolored streaks occur in the wood of affected branches
,B. usually only one side of the plant is first affected
C. individual limbs and branches wilt and die back
D. Leaf buds are distorted - Correct Answer ✔️✔️D. leaf buds are
distorted
Crown Gall is caused by:
A. overfertilization
B. fungi
C. bacteria
D. viruses - Correct Answer ✔️✔️C. bacteria
Shothole- type symptoms are caused by:
A. nematode feeding
B. bacterial leaf spots
C. leaf galls
, D. powdery mildew - Correct Answer ✔️✔️B. bacterial leaf spots
Spread of fireblight is most rapid:
A. during wet weather
B. when susceptible plants are in bloom
C. in midsummer
D. when plants are dormant - Correct Answer ✔️✔️B. when
susceptible plants are in bloom
The best way to prevent the fire blight bacterium from overwintering is
to:
A. spray the ground under the tree with a bacteriacide
B. treat the roots with a fungicide drench
C. remove fallen fruit
D. prune out disease branches - Correct Answer ✔️✔️D. prune
out disease branches
