Category A Practice Questions -- Part III

1. The amount of pesticide drift increases as:

    Nozzle size increases.

    Droplet or particle size increases.

    Wind speed increases.

    Sprayer pressure decreases.

2. You are calibrating a sprayer. You find that the sprayer is putting out 2 gallons per minute of spray, and that it takes 20 minutes for you to spray an acre of land. How much spray per acre is your sprayer putting out?

    0.1 gallons per acre.

    10 gallons per acre.

    40 gallons per acre.

    160 gallons per acre.

3. You know that a tank full of pesticide will cover 5 acres. You wish to apply a pesticide at a rate of 4 pints per acre. How many pints of pesticide should be placed in the tank?

    0.80 pints

    1.25 pints.

    10 pints.

    20 pints.

4. To clean a clogged nozzle, use:

    Water or detergent and a soft brush.

    A steel bristle brush.

    A needle or a pin.

    You mouth to blow it clear.

5. Dusters should be cleaned periodically and emptied of their contents when stored because most insecticidal dusts:

    Attract moisture, causing caking problems.

    Break down quickly in storage.

    Are highly corrosive, damaging the equipment.

    Rapidly dry out, losing their effectiveness.

6. You wish to spray weeds at a dose of 5 pounds of weed killer in 100 gallons of water per acre. How much weed killer will you need to spray 10 acres?

    2 pounds.

    5 pounds.

    50 pounds.

    500 pounds.

7. You can increase the application rate by decreasing the:

    Pressure.

    Tank capacity.

    Ground speed.

    Size of the nozzle orifice.

8. The adjustment of application equipment to apply a pesticide at a desired application rate is called:

    Dilution.

    Formulation.

    Preventive maintenance.

    Calibration.

9. The best method of making major changes in the output rate of spayers is to change the:

    Pressure.

    Ground speed.

    Nozzle size.

    Viscosity of the spray formulation.

10. If your sprayer's output rate is 4 gallons per minute and you treat 2,000 sq. ft. per minute, then your application rate is:

    One gallon per 8,000 sq. ft.

    Two gallons per 1,000 sq. ft.

    Four gallons per 1,000 sq. ft.

    Eight gallons per 1,000 sq. ft.

11. The directions on the label on a container of emulsifiable concentrate insecticide say "Apply spray containing 10 tablespoons per gallon of water at a rate of 1 gallon per 1,000 sq. ft. How much spray should you mix to apply to an are that is 50 ft. long

    1/2 gallon.

    1 gallon.

    1.5 gallons.

    3 gallons.

12. In the example above, how much concentrate should you use to make 2 gallons of finished spray? Hint: 2 tablespoons (Tbs.) = 1 fl. oz.

    10 fl. oz.

    10 Tbs.

    5 fl. oz.

    15 Tbs.

13. A vehicle traveling at a rate of 12 miles per hour will travel how many feet in 30 seconds?

    123 feet.

    528 feet.

    729 feet.

    450 feet.

14. Mist blowers are characterized by:

    Low air velocity and high spray volume.

    High air velocity and high spray volume.

    High air velocity and low spray volume.

    Low air velocity and low spray volume.

15. High pressure, or 'hydraulic' sprayers are characterized by:

    Low pressure and high spray volume.

    High pressure and high spray volume.

    High pressure and low spray volume.

    Low pressure and low spray volume.

16. The primary disadvantage of brass spray nozzles is:

    Their relatively high cost.

    Their tendency to form chemical complexes with certain pesticides.

    Their tendency to wear out in a relatively short period of time.

    All of the above.

17. Characteristics of plastic spray nozzles include:

    They are well suited for high pressures.

    They are highly resistant to organic solvents.

    They are relatively inexpensive.

    They are relatively resistant to wear.

18. The type of pesticide most likely to cause drift is:

    Dust.

    ULV formulation.

    A large volume spray.

    A granular formulation.

19. Pesticide resistance occurs because:

    Excessive spraying causes irritation to resistant populations.

    Pesticides are applied at many times their recommended dose.

    Excessive exposure to a pesticide selects against susceptible individuals, leaving resistant individuals.

    Of the gradual shift from adult control to larval control in insects in general.

20. Cross-resistance is:

    When resistance cannot be reversed.

    Resistance that occurs in both adults and larvae of particular pest population.

    Resistance that occurs in one species after spraying for a different species.

    Resistance in a pest population to chemically-related pesticides.

21. Soil pollution from pesticide applications can result in:

    Contamination of water supplies.

    Phytotoxicity.

    Illegal residues in crops.

    All of the above.

22. Bio-concentration means:

    The accumulation of pesticides in plant or animal tissues.

    The use of microbial pesticides.

    The use of pesticides derived from living organisms.

    The crowding of animals to make pesticide applications more efficient.

23. Adverse environmental effects can best be avoided by:

    Not using synthetic organic pesticides.

    Reading and following the information on the pesticide label.

    Using only pesticides with short residual lives.

    All of the above.

24. Pesticide resistance management:

    Is illegal except by individuals specifically licensed in this subject.

    Is based on the genetic principles of development of pesticide resistance in pests.

    Relies on never combining applications of chemicals with othe forms of control, such as habitat modification.

    Must be approved by the US Army Corps of Engineers.

25. In California, the enforcement of laws dealing with hazardous waste disposal is the responsibility of:

    The Department Pesticide Regulation.

    The Department of Public Health.

    The Department of Toxic Substances Control.

    The State Highway Patrol.

26. In general, a material is considered hazardous waste if:

    Contains any concentration of pesticide that can no longer be legally used.

    It has remained in an opened original container for more than 24 hours.

    It is a toxic Category III material.

    All of the above.

27. Hazardous wastes:

    Cannot be stored pending disposal in their original containers.

    Cannot be stored in 55-gallon drums.

    Must be stored in concrete underground vaults.

    None of the above.

28. Agencies that generate pesticide hazardous wastes should:

    Designate an emergency coordinator.

    Store them at least 1,000 yards from any office building.

    Designate a single individual who must dispose of all such wastes.

    Never utilize commercial firms for disposing of such wastes.

29. Pesticides that are not classified as hazardous wastes:

    May be poured down drains as long as they are certified.

    May be disposed of as regular solid waste or trash.

    Must be applied for reglar pest control operations.

    Must be disposed of in their original containers.

30. Any person who transports hazardous wastes:

    Must have a valid registration issued by the Department of Toxic Substances Control.

    Have a truck certified by USEPA as a toxic carrier.

    Must wear complete protective clothing at all times.

    Must use a truck equipped with a negative pressure pump.

31. Biorational pesticides:

    Are not subject to EPA registration.

    Must have labels clearly marked with the words "Biorational Pesticide".

    Are widely used because they are relatively inexpensive.

    None of the above.

32. Naturally-occuring parasites or predators of pests are also known (especially by ecologists) as:

    Density-independent organisms.

    Microbial pesticides.

    Organic regulators.

    Natual enemies.

33. Systemic toxicants are:

    Now banned by USEPA.

    Used for pests of both plants and animals.

    Are always inert gases of some form.

    Are taken up by the nervous system of pests.

34. Pesticide residue tolerances apply to:

    Raw agricultural commodities.

    Canned, frozen, and otherwise processed food.

    Fruit and nut crops only.

    Agricultural commodities that are hand-picked (as opposed to machine-picked).

35. Atmospheric pollution from pesticide application is most likely to occur with:

    Improperly maintained equipment.

    Spraying at night.

    Illegal use of water-soluble packets.

    Granular formulations.

36. An example of a biorational pesticide is:

    Mosquitofish.

    Methoprene.

    Parathion, if used at small doses.

    DDT.