CDFA Environmental Monitoring & Investigation Exam Which is a vector of Pierce's Disease on the Central Valley - ✔✔red headed sharpshooter How do you manage Branch and Twig Borer - ✔✔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 - ✔✔two-spotted mite Grape Bud Beetles are difficult to control because - ✔✔they're only active at night Why is anagrus epos a more effective parasite for grape leafhopper eggs than variegated leafhopper eggs - ✔✔difference on behavior having to do with egg placement What is the best control for Botrytis Bunch Rot during the growing season - ✔✔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 - ✔✔because pesticide changes affect natural controls What is the best way to help prevent and manage Pierce's Disease when going to new location - ✔✔plant resistant varieties What is the reason for the failure of trichogramma a a parasite against coddling moth - ✔✔trichogramma reduced by natural control before enough eggs could be parasitized Which of the following is the best management for Eutypa Dieback - ✔✔prune in spring so wounds dry What is the best method for treatment of Oak Root Fungus - ✔✔chemical fumigation What disease can only be treated by preplant soil fumigation - ✔✔Armillaria Root Rot What is the life cycle of a perennial weed - ✔✔mature in summer, senesce in fall, and underground parts overwinter What is the best control for powdery mildew - ✔✔sulfur dust Which of the following actions can be referred as cultural control - ✔✔plant resistant varieties Which of the following actions can be referred to as sanitation techniques - ✔✔placing filters over irrigation outlets, cleaning equipment when moving to another site, and removing weeds How do you manage orange navel worm in almonds - ✔✔removal of mummy nuts What is the best method to treat
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