Pesticide Application and Safety, Exams of Nursing

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IOWA CORE MANUAL COMMERCIAL PESTICIDE

APPLICATOR QUESTIONS AND CORRECT DETAILED

ANSWERS (VERIFIED ANSWERS)|ALREADY GRADED A+

4EC - CORRECT ANSWER>>>What is the formulation abbreviation for 4 pounds of active ingredient per gallon in an emulsifiable concentrate formulation? A. 0.04 Ibs B. 0.4E C. 4AI D. 4EC Broadcast - CORRECT ANSWER>>>Which type of pesticide application involves the uniform application of a pesticide to an entire area or field? A. Band B. Basal C. Boom D. Broadcast 7.25 pints - CORRECT ANSWER>>>You are spraying a corn field for stalk borers that are entering the field edge. You are using an insecticide with a labeled rate of 3 pints per acre. You are only treating the outside 8 rows (30-inch rows) and have a strip to treat that is a total of 1 mile in length. How much insecticide do you need for this jobs? 1 mile = 5280 ft, 1 acre = 43,560 square ft. A. 3.75 pints B. 5 pints C. 7.25 pints D. 12.5 pints Mechanical - CORRECT ANSWER>>>Traps, barriers, screens, and preventing pest access are examples of what method of pest management?

Soluble powders - CORRECT ANSWER>>>Which of the following formulations dissolves in water? A. Emulsifiable concentrates B. Soluble powders C. Water-dispersible granules D. Wettable powders Tolerance - CORRECT ANSWER>>>What describes the legal amount of pesticide residue allowed in or on a raw agricultural commodity? Commercial applicator - CORRECT ANSWER>>>Which of the following describes persons who apply or use a pesticide on any property of another person for compensation? A. Certified handler B. Commercial applicator C. Noncommercial applicator D. Public applicator Large orifices at low pressure - CORRECT ANSWER>>>Which of the following nozzle situations minimizes the potential for pesticide drift? A. Small orifices at low pressure B. Small orifices at high pressure C. Large orifices at low pressure D. Large orifices at high pressure 75 pints - CORRECT ANSWER>>>A pesticide label calls for a broadcast application of 2.5 pints of product per acre. Your sprayer holds 450 gallons and calibrated to apply 15 gallons of spray mixture per acre. How much product is needed for each fill? A. 30 pints B. 37.5 pints C. 60 pints D. 75 pints

specified on the label - CORRECT ANSWER>>>The PPE used during pesticide application are _____. A. based on applicator preference B. specified on the label C. specified by the client D. usually not necessary LD50 - CORRECT ANSWER>>>Which of the following is NOT part of the pesticide label? A. Brand or trade name B. Formulation C. LD D. Misuse statement Skin - CORRECT ANSWER>>>Which part of the body is most likely to be exposed to concentrated pesticide? before a pesticide-treated area is safe to enter without wearing PPE - CORRECT ANSWER>>>The restricted-entry interval statement on a pesticide label is the time that must pass ___. A. between pesticide applications B. before the pesticide residues become phytotoxic C. before a pesticide-treated area is safe to enter without wearing PPE D. between the time of pesticide application and harvest of the treated crop pesticides are mixed near wells - CORRECT ANSWER>>>The chance of groundwater contamination increases when ____. A. an air gap is used when filling a spray tank B. pesticides are mixed near wells C. rinsates are used in the next tank mix D. a portable mixing and loading pad is used

Persistence - CORRECT ANSWER>>>Soil half-life measures what characteristic of a pesticide in soil? Preharvest interval - CORRECT ANSWER>>>What is the term for the minimum number of days allowed between a pesticide application and harvest? Phomopsis - CORRECT ANSWER>>>The fungal disease associated with junipers is called ____. A. Brown spot B. Dothistroma C. Lophodermium D. Phomopsis Sirex woodwasp - CORRECT ANSWER>>>Which insect has been successfully managed using a parasitic nematode? A. Asian longhorned beetle B. Emerald ash bore C. Gypsy moth D. Sirex woodwasp The amount of pesticide needed to kill one-half of a population of test animals - CORRECT ANSWER>>>What does the LD50 of a pesticide indicate? A. The amount of pesticide needed to exceed residue tolerances for one-half of the commodity grown B. The amount of pesticide needed to degrade to one-half its concentration in a given time C. The amount of pesticide needed to induce sickness in one-half of a population of test animals D. The amount of pesticide needed to kill one-half of a population of test animals False - CORRECT ANSWER>>>True or False: Pesticides are more likely to move into the groundwater if they have strong soil adsorption characteristics. True - CORRECT ANSWER>>>Pesticides comprised of persistent materials are more likely to move into groundwater

High solubility - CORRECT ANSWER>>>What property of a pesticide would make it more likely to move with water in surface runoff? A. High solubility B. High volatility C. High adsorption A sandy soil, low in organic matter, where groundwater is shallow - CORRECT ANSWER>>>Under what soil conditions are pesticides more likely to leach through the soil? A. A sandy soil, high in organic matter, where groundwater is deep B. A sandy soil, low in organic matter, where groundwater is shallow C. A heavy clay soil, low in organic matter, where groundwater is shallow Trap contaminants - CORRECT ANSWER>>>Grass buffers establish along field borders: A. Reduce pesticide use B. Are high maintenance areas C. Trap contaminants D. Provide no benefits Secondary poisoning - CORRECT ANSWER>>>Following the use of an avicide, several dead pigeons were inadvertently left in a corn field. Multiple dead hawks are found in the area. What is this called? A. Directed spraying B. Secondary poisoning C. Chronic toxicity D. Endangered species True - CORRECT ANSWER>>>True or False: You can reduce the vapor drift of a pesticide by choosing low- volatility pesticides, especially in hot weather.

How long it takes for half of the original amount of pesticide to break down - CORRECT ANSWER>>>When talking about pesticides, what is meant by half-life? A. The amount of time a pesticide will be effective once applied B. How long it takes for half of the original amount of pesticide to break down C. How long a chemical cant stay on the shelf and remain effective 6 hours - CORRECT ANSWER>>>All pesticide spills that result in hazardous conditions in Iowa must be reported by phone to the Iowa DNR as soon as possible, but no later than ___ hours after occurrence or discovery. Control, Contain, Cleanup - CORRECT ANSWER>>>What is the correct order to follow for spill management? A. Control, Contain, Cleanup B. Cleanup, Control, Contain C. Contain, Control, Cleanup False - CORRECT ANSWER>>>True or False: To quickly clean up pesticide spills, hose down the site with water. Put on appropriate PPE - CORRECT ANSWER>>>What is the first thing you should do if you notice a damaged pesticide container? A. Transfer the contents into another sturdy container that can be tightly closed B. Use the pesticide immediately at a site and at a rate allowed by the label C. Put on appropriate PPE 43560 - CORRECT ANSWER>>>How many square feet are in an acre? A. 5280 B. 12350 C. 43560 D. 200,

Caution - CORRECT ANSWER>>>Which signal word indicates a product is slightly toxic? A. Danger-Poison B. Danger C. Warning D. Caution True - CORRECT ANSWER>>>True or False: Restricted use pesticides could harm humans, livestock, wildlife, or the environment, even when used according to label directions. Warning - CORRECT ANSWER>>>Which signal word indicates a product is moderately toxic? A. Danger-Poison B. Danger C. Warning D. Caution 8 hours - CORRECT ANSWER>>>Follow respirator manufacturer's instructions on when to replace filters. If there are none, replace after ___ of use. A. 4 hours B. 8 hours C. 12 hours D. 24 hours Put your pant legs outside your boots - CORRECT ANSWER>>>To protect feet from pesticide exposure you should ___. A. Put your pant legs outside your boots B. Wear canvas and leather footwear C. Tuck your pants into your boots D. Both B and C

Section 18 label - CORRECT ANSWER>>>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? increases - CORRECT ANSWER>>>The presence of sandy soil and a high water table _______ the potential risk of groundwater contamination. Surround the spill with containment snakes or pillows. - CORRECT ANSWER>>>What should you do to contain a small pesticide spill? A. Surround the spill with containment snakes or pillows. B. Hose down the spill to dilute it. C. Ignore it and continue working D. Spread liquid detergent over the entire spill. 3 - CORRECT ANSWER>>>Commercial pesticide applicators must be recertified every _____ years in Iowa. Leaching - CORRECT ANSWER>>>What is the term for the downward movement of pesticides in the soil? Flowable - CORRECT ANSWER>>>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? Drop spreaders drop granules by gravity below the food-gate opening - CORRECT ANSWER>>>Which of the following statements about granular applicators is true? A. Drop spreaders drop granules by gravity below the food-gate opening B. Drop spreaders are popular for broadcast application over large areas C. Granular applicators should be recalibrated whenever the temperature changes D. Rotary spreaders are best used along hard surfaces Attend an approved continuing instructions course each of the 3 years - CORRECT ANSWER>>>Which of the following attendance patterns is required for commercial recertification in Iowa IF the applicator chooses to recertify without retesting?

A. Attend an approved continuing instruction course sometime during the 3 years B. Attend an approved continuing instructions course each of the 3 years C. Attend an extension field day each year D. All applicators MUST recertify by testing Induce vomiting only if the label instructs to do so - CORRECT ANSWER>>>What should you do if a pesticide has been swallowed? A. Induce vomiting only if the label instructs to do so B. Rinse the mouth with plenty of water C. Induce vomiting if an emulsifiable concentrate has been swallowed D. Keep the person's chin up to ensure open air passages Soluble powders - CORRECT ANSWER>>>Which of the following formulations dissolves in water? A. Emulsifiable concentrates B. Soluble powders C. Water-dispersible granules D. Wettable powders Tank mix - CORRECT ANSWER>>>What is the term for the combination and application of two or more pesticides and/or fertilizers? Warm air temperature, low relative humidity - CORRECT ANSWER>>>Which of the following conditions are most favorable for the volatilization to occur? A. Cool air temperature, low relative humidity B. Cool air temperature, high relative humidity C. Warm air temperature, low relative humidity D. Warm air temperature, high relative humidity Phytotoxicity - CORRECT ANSWER>>>Which of the following describes plant injury resulting from a pesticide application to plant?

A. Bioaccumulation B. Phytotoxicity C. Residual D. Systemic Apply it to other labeled area - CORRECT ANSWER>>>What is the best way to dispose of pesticide rinsates? A. Apply it to other labeled area B. Dispose it at a pesticide disposal site C. Apply it over an impermeable surface D. Save it and combine with other rinsates Agitator - CORRECT ANSWER>>>Which of the following keeps wettable powders in suspension? A. Agitator B. Filter C. Pressure gauge D. Pump Directions for Use - CORRECT ANSWER>>>Where on the pesticide label are the directions for mixing usually found? EPA registration number - CORRECT ANSWER>>>What item on a pesticide label identifies it as a federally registered and approved product? 75 pints - CORRECT ANSWER>>>A pesticide label calls for a broadcast application of 2.5 pints of product per acre. Your sprayer holds 450 gallons and is calibrated to apply 15 gallons of spray mixture per acre. How much product is need for each fill? Volatilization - CORRECT ANSWER>>>Which of the following is a cause of vapor drift? A. Dissolving in water

B. Low temperatures C. Nozzle pressure D. Volatilization Small, repeated exposure over time - CORRECT ANSWER>>>Chronic toxicity refers to the harmful effects from which of the following? A. Contact dermatitis B. A single exposure C. Small, repeated exposure over time D. Exposure to a pesticide over 50% of the body Precautionary statements - CORRECT ANSWER>>>In which section of the label can the required PPE be found? A. Environmental hazards B. Physical and chemical hazards C. Precautionary statements D. Storage and disposal Keep out of reach of children - CORRECT ANSWER>>>Which statement is required on all pesticide labels? Ensure that the proper rate of chemical is applied to the target area - CORRECT ANSWER>>>What is the main objective of calibration? A. Ensure that all the parts of the sprayer are working properly B. Determine the quantity of pesticide you need to apply C. Ensure that the proper rate of chemical is applied to the target area D. Determine the time required to treat a specific area Adjuvant - CORRECT ANSWER>>>Which of the following is an additive that is added to a pesticide mixture that helps the active ingredient do a better job? A. Adjuvant

B. Emulsion C. Desiccant D. Diluant Runoff - CORRECT ANSWER>>>What term refers to the surface movement of water away from the treated site? Worker Protection Standard - CORRECT ANSWER>>>Which law requires employers to provide agricultural workers and pesticide handlers with protection against possible harm from pesticide exposure? Residue - CORRECT ANSWER>>>What is the term for the amount of pesticide that stays on or in a raw farm product or processed food? Use a non-ionic surfactant in the wash water - CORRECT ANSWER>>>Which of the following is INCORRECT when laundering pesticide-soiled clothing? A. Line-dry the clothes outdoors B. Use a heavy-duty detergent C. Use the longest wash cycle D. Use a non-ionic surfactant in the wash water 18 hours - CORRECT ANSWER>>>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? Specialized equipment is required - CORRECT ANSWER>>>What is a disadvantage of using an ultra low volume concentrate formulation? A. It is difficult to handle, transport, and store B. Specialized equipment is required C. The amount of visible residue on treated surfaces D. It tends to plug screens and nozzles

Toxicity - CORRECT ANSWER>>>What is the term for the degree or extent to which a chemical or substance is poisonous? greater at high temperatures - CORRECT ANSWER>>>The risk of damage to nontarget plants from drift of volatile pesticides is _____. A. greater at high temperatures B. decreased at high temperatures C. dependent on droplet size D. about the same at all temperatures A certified pesticide applicator - CORRECT ANSWER>>>Who may use a Restricted Use Pesticide? A. A person approved by employer B. A certified pesticide applicator C. An experienced pesticide applicator D. Anyone with a legitimate need to use the product Exposure - CORRECT ANSWER>>>What is the term for unwanted contact with pesticides or pesticide residues? 50 pints - CORRECT ANSWER>>>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? Section 18 - CORRECT ANSWER>>>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? A. Section 3 B. Section 18 C. Section 24(c) D. Section 25(b)

You may wear more PPE than the pesticide label lists - CORRECT ANSWER>>>Which of the following statements about PPE is true? A. PPE eliminates exposure from pesticides B. Water resistant PPE protects against concentrated pesticide products C. You may wear more PPE than the pesticide label lists D. Eye protection should not be vented to prevent pesticide exposure To minimize the pesticide's impact on ground and surface water - CORRECT ANSWER>>>Why were the Iowa atrazine management rules put in place? A. To minimize the tolerances of the pesticide B. To control the hazardous waste from the cradle-to-grave C. To keep the economic injury level below the economic threshold D. To minimize the pesticide's impact on ground and surface water Systemic - CORRECT ANSWER>>>What type of pesticide moves from the site of absorption in a treated plant or animal to other tissues? Nausea from spilling pesticides on your legs - CORRECT ANSWER>>>Which of the following describes a systemic effect to a pesticide? A. A skin rash where the pesticide was in contact with your skin B. Nausea from spilling pesticides on your legs C. Developing a reaction to a pesticide that others do not D. Eye irritation from rubbing your eye with contaminated gloves Preharvest interval - CORRECT ANSWER>>>What is the term for the minimum number of days allowed between the pesticide application and harvest? Chronic toxicity - CORRECT ANSWER>>>What is the term that describes the harmful effects that occur from small, repeated exposures to pesticides over a period of time?

1 mile - CORRECT ANSWER>>>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 9 a.m. and 6 p.m.? 42 ounces - CORRECT ANSWER>>>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 1/4 mile in length. How much product do you need for this job? 1 mile = 5280 linear feet A. 21 ounces B. 32 ounces C. 42 ounces D. 62.5 ounces Practice emergency procedures so everyone knows what to do - CORRECT ANSWER>>>Which statement about emergency response planning is true? A. In the event of an emergency, contact your attorney first B. Several people should be given the authority in an emergency situation C. Update the emergency response plan only after an emergency D. Practice emergency procedures so everyone knows what to do Applying treatments when bees are not foraging - CORRECT ANSWER>>>How can accidental bee kills from insecticide poisoning be minimized? A. Applying treatments when bees are not foraging B. Spraying only when plants are flowering C. Using aerial application D. Using wettable powder formulations Environmental Protection Agency - CORRECT ANSWER>>>Which agency regulates the sale and use of pesticides in the United States? Volatilization - CORRECT ANSWER>>>Which of the following is a cause of vapor drift? A. Dissolving in water

B. Low temperatures C. Nozzle pressure D. Volatilization Acute toxicity - CORRECT ANSWER>>>Which of the following describes a measure of how poisonous a pesticide is after a single, one-time exposure? A. Acute toxicity B. Chronic toxicity C. Allergic effect D. Medical antidote Decreases - CORRECT ANSWER>>>What happens to a nozzle flow rate if the line pressure is decreased? A. Decreases B. Increases C. Has no effect D. Varies, depending on the ground speed In the original, labeled container - CORRECT ANSWER>>>How should pesticides be stored? A. In direct sunlight to ensure adequate lighting B. In the original, labeled container C. On absorbent shelving to decrease spills D. With seeds and personal protective equipment Volatilization - CORRECT ANSWER>>>What is the term for when a pesticide turns into a gas? 10 psi - CORRECT ANSWER>>>A sprayer is calibrated to apply 30 gallons per acre (GPA) at 40 pounds per square inch (psi). Approximately what pressure is needed to decrease the output to 15 gallons per acre without changing speed or nozzle size. Hint: (psi1/psi2) = (GPA1/GPA2)^

Stay in the environment without change for long periods of time - CORRECT ANSWER>>>Which of the following is TRUE for persistent pesticides? A. Remain inactive for short periods of time B. Remain inactive for long periods of time C. Stay in the environment without change for short periods of time D. Stay in the environment without change for long periods of time The pest developed resistance to the pesticide - CORRECT ANSWER>>>Why might a pesticide application sometimes fail to control a pest? A. The LD50 of the pesticide is too low B. The rate of product applied was too high C. The restricted-entry interval was not followed D. The pest developed resistance to the pesticide Allows a state to register additional uses for a federally registered pesticide - CORRECT ANSWER>>>Which of the following describes a 24(c) registration? A. A temporary request that does not require supplemental labeling B. Allows a state to register additional uses for a federally registered pesticide C. The use of non-registered pesticides for pest control in emergency situations Labels may list special precautions around sensitive areas - CORRECT ANSWER>>>Which statement about sensitive areas is true? A. Never spray a sensitive area to control a pest for any reason B. Do not spray a larger target site if it contains sensitive areas C. Labels may list special precautions around sensitive areas D. Endangered or treated species habitats are not considered sensitive areas Provide emergency response personnel with MSDS - CORRECT ANSWER>>>Which of the following is a way to minimize damage from pesticide fires? A. Provide emergency response personnel with MSDS

B. Use water jets to fight the fire C. Do not contain water or spilled chemicals D. Evacuate people and animals downwind of the fire 20 - CORRECT ANSWER>>>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? 540 pounds - CORRECT ANSWER>>>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? A. 300 pounds B. 360 pounds C. 540 pounds D. 1080 pounds 3 years - CORRECT ANSWER>>>How long must pesticide records be kept after the date of application? Carry labels and MSDS for each pesticide being transported - CORRECT ANSWER>>>Which statement about transporting pesticides is true? A. Carry labels and MSDS for each pesticide being transported B. Transport pesticides in the passenger compartment of the vehicle C. Pesticides do not need to be secured if they are covered with a tarp D. D.O.T. placards are required for all pesticides pH of the spray - CORRECT ANSWER>>>Which factor does NOT affect a pesticide's potential to contaminate groundwater? A. Geology B. Organic matter C. Soil texture D. pH of the spray

Metal - CORRECT ANSWER>>>What materials should be used for shelving in a pesticide storage area? A. Chip board B. Metal C. Concrete block D. Wood Wettable powders - CORRECT ANSWER>>>Which pesticide formulation clogs nozzles and screens? A. Ultra low volume B. Soluble powders C. Wettable powders D. Emulsifiable concentrates Increase the gallons of spray applied per acre by 1/2 - CORRECT ANSWER>>>What will doubling the ground speed of a sprayer do if nozzle pressure remains constant? A. Increase the gallons of spray applied per acre by 1/ B. Reduce the gallons of spray applied per acre by 1/ C. Increase the gallons of spray applied per acre by 2 D. Reduce the gallons spray applied per acre by 2 Tolerates the toxic effects of the pesticide - CORRECT ANSWER>>>How does pesticide resistance in a organism allow it to survive? A. Completely metabolizes the pesticide to nontoxic forms B. Excretes the pesticide before it reaches toxic levels C. Stores the pesticide in fat and muscle tissues D. Tolerates the toxic effects of the pesticide The ease of dissolving a product in water - CORRECT ANSWER>>>What is the definition for pesticide solubility? A. The process of a pesticide binding to soil particles

B. The breakdown of pesticides into less toxic chemicals C. The ease of dissolving a product in water D. The measure of danger of the product to human health Physical incompatibility - CORRECT ANSWER>>>What is the term for pesticides that when mixed together do not stay uniformly mixed in the spray tank even with adequate agitation? 4EC - CORRECT ANSWER>>>What is the formulation abbreviation for 4 pounds of active ingredient per gallon in an emulsifiable concentrate formulation? A. 0.04 Ibs B. 0.4E C. 4AI D. 4EC Broadcast - CORRECT ANSWER>>>Which type of pesticide application involves the uniform application of a pesticide to an entire area or field? A. Band B. Basal C. Boom D. Broadcast 7.25 pints - CORRECT ANSWER>>>You are spraying a corn field for stalk borers that are entering the field edge. You are using an insecticide with a labeled rate of 3 pints per acre. You are only treating the outside 8 rows (30-inch rows) and have a strip to treat that is a total of 1 mile in length. How much insecticide do you need for this jobs? 1 mile = 5280 ft, 1 acre = 43,560 square ft. A. 3.75 pints B. 5 pints C. 7.25 pints D. 12.5 pints

Mechanical - CORRECT ANSWER>>>Traps, barriers, screens, and preventing pest access are examples of what method of pest management? Soluble powders - CORRECT ANSWER>>>Which of the following formulations dissolves in water? A. Emulsifiable concentrates B. Soluble powders C. Water-dispersible granules D. Wettable powders Tolerance - CORRECT ANSWER>>>What describes the legal amount of pesticide residue allowed in or on a raw agricultural commodity? Commercial applicator - CORRECT ANSWER>>>Which of the following describes persons who apply or use a pesticide on any property of another person for compensation? A. Certified handler B. Commercial applicator C. Noncommercial applicator D. Public applicator Large orifices at low pressure - CORRECT ANSWER>>>Which of the following nozzle situations minimizes the potential for pesticide drift? A. Small orifices at low pressure B. Small orifices at high pressure C. Large orifices at low pressure D. Large orifices at high pressure 75 pints - CORRECT ANSWER>>>A pesticide label calls for a broadcast application of 2.5 pints of product per acre. Your sprayer holds 450 gallons and calibrated to apply 15 gallons of spray mixture per acre. How much product is needed for each fill? A. 30 pints B. 37.5 pints

C. 60 pints D. 75 pints specified on the label - CORRECT ANSWER>>>The PPE used during pesticide application are _____. A. based on applicator preference B. specified on the label C. specified by the client D. usually not necessary LD50 - CORRECT ANSWER>>>Which of the following is NOT part of the pesticide label? A. Brand or trade name B. Formulation C. LD50 D. Misuse statement Skin - CORRECT ANSWER>>>Which part of the body is most likely to be exposed to concentrated pesticide? before a pesticide-treated area is safe to enter without wearing PPE - CORRECT ANSWER>>>The restricted-entry interval statement on a pesticide label is the time that must pass ___. A. between pesticide applications B. before the pesticide residues become phytotoxic C. before a pesticide-treated area is safe to enter without wearing PPE D. between the time of pesticide application and harvest of the treated crop pesticides are mixed near wells - CORRECT ANSWER>>>The chance of groundwater contamination increases when ____. A. an air gap is used when filling a spray tank B. pesticides are mixed near wells C. rinsates are used in the next tank mix

D. a portable mixing and loading pad is used Persistence - CORRECT ANSWER>>>Soil half-life measures what characteristic of a pesticide in soil? Preharvest interval - CORRECT ANSWER>>>What is the term for the minimum number of days allowed between a pesticide application and harvest? Phomopsis - CORRECT ANSWER>>>The fungal disease associated with junipers is called ____. A. Brown spot B. Dothistroma C. Lophodermium D. Phomopsis Sirex woodwasp - CORRECT ANSWER>>>Which insect has been successfully managed using a parasitic nematode? A. Asian longhorned beetle B. Emerald ash bore C. Gypsy moth D. Sirex woodwasp The amount of pesticide needed to kill one-half of a population of test animals - CORRECT ANSWER>>>What does the LD50 of a pesticide indicate? A. The amount of pesticide needed to exceed residue tolerances for one-half of the commodity grown B. The amount of pesticide needed to degrade to one-half its concentration in a given time C. The amount of pesticide needed to induce sickness in one-half of a population of test animals D. The amount of pesticide needed to kill one-half of a population of test animals False - CORRECT ANSWER>>>True or False: Pesticides are more likely to move into the groundwater if they have strong soil adsorption characteristics.

True - CORRECT ANSWER>>>Pesticides comprised of persistent materials are more likely to move into groundwater High solubility - CORRECT ANSWER>>>What property of a pesticide would make it more likely to move with water in surface runoff? A. High solubility B. High volatility C. High adsorption A sandy soil, low in organic matter, where groundwater is shallow - CORRECT ANSWER>>>Under what soil conditions are pesticides more likely to leach through the soil? A. A sandy soil, high in organic matter, where groundwater is deep B. A sandy soil, low in organic matter, where groundwater is shallow C. A heavy clay soil, low in organic matter, where groundwater is shallow Trap contaminants - CORRECT ANSWER>>>Grass buffers establish along field borders: A. Reduce pesticide use B. Are high maintenance areas C. Trap contaminants D. Provide no benefits Secondary poisoning - CORRECT ANSWER>>>Following the use of an avicide, several dead pigeons were inadvertently left in a corn field. Multiple dead hawks are found in the area. What is this called? A. Directed spraying B. Secondary poisoning C. Chronic toxicity D. Endangered species True - CORRECT ANSWER>>>True or False: You can reduce the vapor drift of a pesticide by choosing low- volatility pesticides, especially in hot weather.

How long it takes for half of the original amount of pesticide to break down - CORRECT ANSWER>>>When talking about pesticides, what is meant by half-life? A. The amount of time a pesticide will be effective once applied B. How long it takes for half of the original amount of pesticide to break down C. How long a chemical cant stay on the shelf and remain effective 6 hours - CORRECT ANSWER>>>All pesticide spills that result in hazardous conditions in Iowa must be reported by phone to the Iowa DNR as soon as possible, but no later than ___ hours after occurrence or discovery. Control, Contain, Cleanup - CORRECT ANSWER>>>What is the correct order to follow for spill management? A. Control, Contain, Cleanup B. Cleanup, Control, Contain C. Contain, Control, Cleanup False - CORRECT ANSWER>>>True or False: To quickly clean up pesticide spills, hose down the site with water. Put on appropriate PPE - CORRECT ANSWER>>>What is the first thing you should do if you notice a damaged pesticide container? A. Transfer the contents into another sturdy container that can be tightly closed B. Use the pesticide immediately at a site and at a rate allowed by the label C. Put on appropriate PPE 43560 - CORRECT ANSWER>>>How many square feet are in an acre? A. 5280 B. 12350 C. 43560 D. 200,000