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CDFA Environmental Monitoring &
Investigation Exam Questions And Answers
100% Guaranteed Pass.
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
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CDFA Environmental Monitoring &
Investigation Exam Questions And Answers
100% Guaranteed Pass.
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
1|Page
