CDFA Environmental Monitoring &
Investigation Exam Already Graded A+
Which is a vector of Pierce's Disease on the Central Valley - Answer red headed
sharpshooter
How do you manage Branch and Twig Borer - Answer remove and burn all dead
wood and bush in and around vineyard, prune out any dead canes and damaged
vines early in spring, examine pruning cuts for exit holes and frass
Which pest requires a microscope to view and identify - Answer two-spotted mite
Grape Bud Beetles are difficult to control because - Answer they're only active at
night
Why is anagrus epos a more effective parasite for grape leafhopper eggs than
variegated leafhopper eggs - Answer difference on behavior having to do with egg
placement
What is the best control for Botrytis Bunch Rot during the growing season - Answer
remove leaves from canopy
Grape Mealybug was a problem in the 1920s and then not a problem in the 1960s
with phasing out of DDT and then again a problem with the use pf
organophosphates. What is the reason for this fluctuation - Answer because
pesticide changes affect natural controls
What is the best way to help prevent and manage Pierce's Disease when going to
new location - Answer plant resistant varieties
What is the reason for the failure of trichogramma a a parasite against coddling moth
- Answer trichogramma reduced by natural control before enough eggs could be
parasitized
Which of the following is the best management for Eutypa Dieback - Answer prune in
spring so wounds dry
What is the best method for treatment of Oak Root Fungus - Answer chemical
fumigation
What disease can only be treated by preplant soil fumigation - Answer Armillaria
Root Rot
What is the life cycle of a perennial weed - Answer mature in summer, senesce in
fall, and underground parts overwinter
What is the best control for powdery mildew - Answer sulfur dust
Which of the following actions can be referred as cultural control - Answer plant
resistant varieties
Investigation Exam Already Graded A+
Which is a vector of Pierce's Disease on the Central Valley - Answer red headed
sharpshooter
How do you manage Branch and Twig Borer - Answer remove and burn all dead
wood and bush in and around vineyard, prune out any dead canes and damaged
vines early in spring, examine pruning cuts for exit holes and frass
Which pest requires a microscope to view and identify - Answer two-spotted mite
Grape Bud Beetles are difficult to control because - Answer they're only active at
night
Why is anagrus epos a more effective parasite for grape leafhopper eggs than
variegated leafhopper eggs - Answer difference on behavior having to do with egg
placement
What is the best control for Botrytis Bunch Rot during the growing season - Answer
remove leaves from canopy
Grape Mealybug was a problem in the 1920s and then not a problem in the 1960s
with phasing out of DDT and then again a problem with the use pf
organophosphates. What is the reason for this fluctuation - Answer because
pesticide changes affect natural controls
What is the best way to help prevent and manage Pierce's Disease when going to
new location - Answer plant resistant varieties
What is the reason for the failure of trichogramma a a parasite against coddling moth
- Answer trichogramma reduced by natural control before enough eggs could be
parasitized
Which of the following is the best management for Eutypa Dieback - Answer prune in
spring so wounds dry
What is the best method for treatment of Oak Root Fungus - Answer chemical
fumigation
What disease can only be treated by preplant soil fumigation - Answer Armillaria
Root Rot
What is the life cycle of a perennial weed - Answer mature in summer, senesce in
fall, and underground parts overwinter
What is the best control for powdery mildew - Answer sulfur dust
Which of the following actions can be referred as cultural control - Answer plant
resistant varieties
