Browse all practice questions for the Iowa DOA CORE Pesticide Applicator's License Practice Test. Search by topic, open any question and review its full explanation, then test yourself in the practice quiz.

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  • When checking the compatibility of a proposed tank mix, which test is commonly used?
  • What is the formulation that consists of active ingredients placed on a carrier such as clay and then suspended in a small amount of liquid?
  • What information does a label's 'Statement of Practical Treatment' provide?
  • How long must pesticide records be kept after the date of application?
  • What is the term for the downward movement of pesticides in the soil?
  • Which practice helps prevent pesticide contamination of water?
  • Which pesticide formulation often clogs nozzles and screens?
  • If a tank mix of Products A and B was applied and Product A has a restricted entry interval of 12 hours and Product B has a restricted entry interval of 18 hours, how long must a worker wait until going back into the treated area if not wearing the appropriate PPE?
  • Which factor is considered in determining a pesticide's restricted-use classification?
  • What does the restricted-entry interval (REI) on a pesticide label specify?
  • In ongoing control failures despite standard practices, which factor is identified as a cause on the list?
  • A pesticide product has a very low LD50 value for the target pest. In the context of application outcomes, which item on the list is most relevant?
  • Which is a disadvantage of an emulsifiable concentrate?
  • How many fluid ounces are in 3 gallons? (1 gallon = 128 fl oz)
  • For pesticide storage shelving, which material is recommended?
  • Which item on the list concerns the toxicity threshold used to gauge the pesticide's effect on pests?
  • Which statement about sensitive areas is true?
  • A pesticide label calls for a broadcast application using 2 pints of product per acre. Your sprayer holds 375 gallons and is calibrated to apply 15 gallons of spray mixture per acre. How much product is needed for each fill?
  • Which practice increases the chance of groundwater contamination?
  • The EPA registration number on a pesticide label indicates that the product is:
  • Which of the following statements about PPE is true?
  • What is a disadvantage of dust formulations?
  • How long must you wait to enter a treated area without protective clothing if no restricted-entry statement appears on the label?
  • Which factor is described as a pest developing resistance to the pesticide?
  • The Endangered Species Act regulates pesticide use in or near habitats to protect which of the following?
  • A sprayer is calibrated to apply 15 gallons per acre at 15 pounds per square inch (psi). Approximately what pressure is needed to increase the output to 30 gallons per acre without changing speed or nozzle size?
  • What does the suffix 'G' in a pesticide product name most commonly indicate about the formulation?
  • If the restricted-entry interval was not followed after an application, this could explain a failure to control pests. Which option matches?
  • Which factor on the list could be implicated if the label's safety or rotation instructions were ignored?
  • A sprayer is calibrated to apply 30 gallons per acre at 40 psi. Approximately what pressure is needed to decrease the output to 15 gallons per acre without changing speed or nozzle size?
  • Which of the following is an additive that is added to a pesticide mixture that helps the active ingredient do a better job?
  • What is the purpose of the Restricted Entry Interval (REI) on a pesticide label?
  • Which factor does NOT affect a pesticide's potential to contaminate groundwater?
  • Which term describes a pesticide moving from a surface into the air?
  • The risk of damage to nontarget plants from drift of volatile pesticides is ______________.
  • Which of the following is TRUE for pesticide formulations?
  • Which of the following is INCORRECT when laundering pesticide-soiled clothing?
  • Which statement best describes the purpose of a pesticide label's first aid section?
  • Convert 5 pounds to kilograms using 1 kilogram equals 2.2 pounds.
  • What is recommended when transporting pesticides?
  • To minimize bee exposure during pesticide applications, when should you apply?
  • Which term describes the movement of a pesticide from the soil into the air as a vapor?
  • You are spraying a corn field for stalk borers along the field edge with 3 pints per acre, treating only the outside eight rows on 30-inch rows, for a strip one mile long. How many pints of insecticide are required?
  • Where should pesticides be stored in relation to feed or seed?
  • When should pesticide labels first be read and understood?
  • What is the term for the combination and application of two or more pesticides and/or fertilizers?
  • Commercial pesticide applicators must be recertified every _____ years in Iowa?
  • After applying a pesticide, pests remain active. Which factor from the list could explain this failure?
  • What is the most effective way to minimize environmental impact of pesticides, as suggested by the material?
  • Which of the following is NOT part of the pesticide label?
  • What is the term for the degree or extent to which a chemical or substance is poisonous?
  • Which factor on the list could explain poor control due to the pest's adaptation to the chemical?
  • Which of the following describes a systemic effect to a pesticide?
  • What happens to nozzle flow rate if the line pressure is decreased?
  • What is the formulation abbreviation for 4 pounds of active ingredient per gallon in an emulsifiable concentrate formulation?
  • Where on the pesticide label are the directions for mixing usually found?
  • Which item helps keep wettable powders in suspension?
  • What is the proper practice for cleaning spray equipment?
  • How many pounds are in 5 kilograms? (1 kilogram = 2.2 pounds)
  • Which pesticide formulation is likely to clog nozzle screens?
  • Traps, barriers, screens and preventing pest access are examples of what method of pest management?
  • What is the term for the minimum number of days allowed between the pesticide application and harvest?
  • In emergency planning, why is practice important?
  • What is the main objective of calibration?
  • Which nozzle situation minimizes the potential for pesticide drift?
  • In the example, the pesticide rate is given as ounces per 1,000 feet of row. What is the unit used for this rate?
  • If a pesticide label requires chemical-resistant gloves, which of the following is best practice?
  • Why were the Iowa atrazine management rules put in place?
  • A label calls for a granular pesticide to be applied at 5 ounces per 1,000 feet of row. You must treat 10 rows, each 1/4 mile long. How much product is needed?
  • How often should pesticide application equipment be calibrated?
  • If increasing the application rate does not improve control, which listed factor could be responsible?
  • How many times must pressure rinsed pesticide containers be rinsed?
  • A label calls for a granular pesticide to be applied at 8 ounces per 1,000 feet of row. You have to treat 4 rows, each mile in length. How much product do you need for this job?
  • Which of the following conditions are most favorable for volatilization to occur?
  • Pesticide formulations are typically a mixture of active ingredients and what other components?
  • Which statement about pesticide storage is INCORRECT?
  • The PPE used during pesticide applications are __________.
  • When laundering pesticide-soiled clothing, ______________.
  • Which of the following describes a measure of how poisonous a pesticide is after a single, one-time exposure?
  • Disposal instructions for pesticides are typically found on the label in which section?
  • Which practice constitutes a legal deviation from the label?
  • Which federal regulation requires limitations on pesticide use in or near certain plant or animal habitats?
  • The acronym REI on pesticide labels stands for?
  • Which process refers to the breakdown of a pesticide due to exposure to sunlight?
  • A sprayer has a 320-gallon capacity tank. If it is calibrated to apply 16 gallons of solution per acre, how many acres will be sprayed with each fill?
  • The label's Statement of Practical Treatment is primarily used to guide which type of information?
  • Which statement about emergency response planning is true?
  • Which statement best reflects the reason to calibrate pesticide application equipment regularly?
  • What is the definition for pesticide solubility?
  • Which item on a pesticide label identifies it as a federally registered and approved product?
  • In a tank mix of two pesticides, the re-entry interval after application should be based on the product with which characteristic?
  • If a sprayer applies 15 gallons per acre, how many gallons per 1000 square feet is that?
  • Which attendance pattern is required for commercial recertification in Iowa IF the applicator chooses to recertify without retesting?
  • A sprayer with a 350-gallon capacity is calibrated to apply 14 gallons of solution per acre. How many acres are sprayed per fill?
  • A state may add uses to a federally registered pesticide through which registration?
  • During restricted-entry interval compliance, entry into a treated area should be made with what consideration?
  • Which term refers to the pesticide remaining in the environment after application?
  • Which of the following is a way to minimize damage from pesticide fires?
  • Which statement about transporting pesticides is true?
  • What term refers to surface movement of water away from the treated site?
  • A pesticide having an LD50 of 80 is ______________than a pesticide having an LD50 of 160.
  • To prevent pesticide sprays from getting on your feet, which measure is recommended?
  • Which type of pesticide application involves the uniform application of a pesticide to an entire area or field?
  • Which signal word appears on a label with a skull and crossbones symbol?
  • In which section of the label can the required PPE be found?
  • What does the "25" stand for on a pesticide label with the brand name Bugoff 25W?
  • What type of pesticide moves from the site of absorption in a treated plant or animal to other tissues?
  • During application, the rate of product applied was higher than the recommended rate, yet control was poor. Which item on the list explains this?
  • The label rate of an insecticide is 5 ounces per 1000 square feet. The sprayer is applying at a rate of 2 gallons/1000 square feet. How much pesticide should be added per gallon of a spray mix?
  • Which of the following describes plant injury resulting from a pesticide application to a plant?
  • Which of the following statements about granular applicators is true?
  • Which factor should you consult on the label to determine required PPE before handling a pesticide?
  • Which statement is required on all pesticide labels?
  • Which statement about pesticide storage and disposal is true?
  • How does pesticide resistance in an organism allow it to survive?
  • A respirator is an example of which type of personal protective equipment?
  • One step to reduce the movement of particles off the application site is to use _____________.
  • A pesticide that is ______ reduces the likelihood of groundwater contamination.
  • One square mile equals how many acres?
  • The term volatilization describes the pesticide turning into which form?
  • Which factor reflects the possibility that pests become tolerant after repeated exposure, leading to control failure?
  • What signal word is assigned to pesticides that are of relatively low toxicity to humans?
  • Which is a recommended best management practice for preventing pesticide contamination of water?
  • Which of the following practices is not recommended when cleaning spray equipment?
  • What describes the legal amount of pesticide residue allowed in or on a raw agricultural commodity?
  • You are treating a turf area for bluegrass billbug. You are using a granular insecticide with a labeled rate of 6 pounds per 1000 square feet. The turf area is 150 feet by 600 feet. Approximately how much insecticide do you need to treat the total area?
  • If workers entered a treated area before the restricted-entry interval had elapsed, which listed factor would this illustrate as a potential cause of reduced pest control effectiveness?
  • How should pesticides be stored?
  • Which term describes the downward movement of pesticide through soil and into groundwater?
  • Which agency is listed as regulating the sale and use of pesticides in the United States?
  • Which statement best describes integrated pest management (IPM) strategies?
  • What is the part of a pesticide formulation that is toxic to the pest called?
  • Which statement about rinsing pesticide containers is TRUE?
  • Which statement best describes Snailo 5G based on its label information?
  • Which describes persons who apply or use a pesticide on any property of another person for compensation?
  • What is the term for when a pesticide turns into a gas?
  • What is the term for pesticides that when mixed together do not stay uniformly mixed in the spray tank even with adequate agitation?
  • In a scenario where treatment does not improve pest suppression despite attempts to optimize methods, which factor from the list could be responsible?
  • Chronic toxicity refers to harmful effects from which of the following?
  • What is the best way to dispose of pesticide rinsates?
  • What should you do if a pesticide has been swallowed?
  • Which statement describes a 24(c) registration?
  • If the label rate is 5 ounces per 1000 square feet and you apply at 3 gallons per 1000 square feet, how many ounces should be added per gallon of spray mix?
  • What should you do before giving first aid to a victim in an enclosed area?
  • Which unit is commonly used to express pesticide application rate per area?
  • Which of the following is TRUE for persistent pesticides?
  • Which agencies must you contact if a pesticide spill resulting in hazardous conditions occurs?
  • What will doubling the ground speed of a sprayer do if nozzle pressure remains constant?
  • Which of the following is commonly listed as a sensitive area on pesticide labels?
  • If you are mixing a product that has a Section 18 emergency exemption in addition to the label on the product, what do you use for instructions on how to mix the product?
  • What is the term for the amount of pesticide that stays on or in a raw farm product or processed food?
  • In the context of transporting pesticides, which is the required precaution for each pesticide?
  • Which formulation dissolves in water?
  • Which of the following is the most likely reason a pesticide application fails to control a pest?
  • What is a disadvantage of using an ultra low volume concentrate formulation?
  • What term describes the amount of chemical applied per unit area?
  • Which law requires employers to provide agricultural workers and pesticide handlers with protection against possible harm from pesticide exposure?
  • Which label section should you consult for mixing instructions?
  • What should you do to contain a small pesticide spill?
  • Which factor is not a factor in a pesticide's groundwater contamination potential?
  • Which term describes a species that is in danger of extinction throughout all or a significant portion of its range?
  • Which of the following is considered a misuse of a pesticide?
  • A label calls for a granular pesticide to be applied at 10 ounces per 1,000 feet of row. You have to treat 8 rows, each mile in length. How many ounces are needed for this job?
  • According to the Iowa Bee Rule, how far away must commercial applicators be from registered apiaries when applying pesticides labeled as toxic to bees between 8 a.m. and 6 p.m.?
  • Which part of the body is most likely to be exposed to concentrated pesticide?
  • If ground speed is doubled while nozzle pressure stays the same, what happens to spray per acre?
  • Who may use a Restricted Use Pesticide?
  • What materials should be used for shelving in a pesticide storage area?
  • Which component of an emulsifiable concentrate can cause pump parts to deteriorate?
  • Which of the following is an emergency exemption from registration that allows for the sale and use of a pesticide for a non-registered purpose for a limited time?
  • Which formulation type is commonly indicated by the suffix 'G' in product names?
  • How can accidental bee kills from insecticide poisoning be minimized?
  • A pesticide label calls for a broadcast application of 2.5 pints per acre. Your sprayer holds 450 gallons and is calibrated to apply 15 gallons of spray mixture per acre. How much product is needed for each fill?
  • During a pesticide fire, the safest immediate action for nearby people is to
  • If ten rows are each 1/4 mile long, what is the total length to treat in feet?
  • What is the term for unwanted contact with pesticides or pesticide residues?
  • Which factors influence potential environmental impact when applying near water?
  • Which choice is not an appropriate disposal option for rinsates?
  • Which term describes spray droplets moving through the air away from the treated area?
  • How many fluid ounces are in 2 gallons, given that 1 gallon equals 128 fluid ounces?
  • What term describes the harmful effects that occur from small, repeated exposures to pesticides over a period of time?
  • What should be done when a nozzle clogs during spraying?
  • Which type of adjuvant physically alters the surface tension of a spray droplet?
  • What is the term for the amount of pesticide that remains on surfaces after application?
  • Which factor on the list relates to the LD50 value as it pertains to pest kill efficiency?
  • If you are applying at 3 pints per acre over 2 acres, how many pints are needed?
  • The presence of sandy soil and a high water table __________ the potential risk of groundwater contamination.
  • Why is calibrating a sprayer important?
  • Which term describes the buildup of a pesticide in an organism due to uptake from water or food?
  • What is the total area in square feet for a turf area measuring 150 feet by 600 feet?
  • The restricted use classification is based on the hazard of poisoning and the ________.
  • Which agency regulates the sale and use of pesticides in the United States?
  • According to Iowa law, pesticides applied more than six feet from a structure's perimeter must be posted with notification signs.
  • What should you do first in the case of a pesticide spill?
  • Which of the following is a cause of vapor drift?
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