Application Equipment Practice Questions

Q1.Application Equipment Question 1: Which equipment component is essential for proper pesticide application?

Q2.Application Equipment Question 2: Which equipment component is essential for proper pesticide application?

Q3.Application Equipment Question 3: Which equipment component is essential for proper pesticide application?

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Q40.Application Equipment Question 40: Which equipment component is essential for proper pesticide application?

Q41.An applicator is selecting a nozzle for broadcast application of a post-emergence herbicide on a calm morning. The goal is uniform coverage across a 40-acre field. Which nozzle type is most appropriate?

Q42.An applicator notices that a broadcast sprayer is producing inconsistent output across the boom: one end delivers 8 gal/acre while the other end delivers 6 gal/acre. The pressure gauge reads 40 psi, and all nozzles appear clean. What is the most likely cause?

Q43.During a late-morning application, an applicator observes visible drift of spray particles toward a neighboring field despite a gentle breeze of 6 mph. The current nozzle produces a fine mist. The applicator wants to reduce drift while maintaining efficacy for the herbicide product. What adjustment is most appropriate?

Q44.An applicator is selecting spray equipment for applying a fungicide suspension (flowable) on fruit trees in an orchard. The trees vary in height from 8 feet to 25 feet. Which sprayer type combination best addresses both formulation and target needs?

Q45.After applying an organophosphate insecticide with an air-blast sprayer, an applicator must clean the equipment. The equipment was previously used for herbicide application without intermediate cleaning. What is the primary concern and cleaning requirement?

Q46.A sprayer boom is set at a height of 30 inches above the crop canopy in calm conditions. After applying mid-day with increasing wind, the applicator observes variable swath overlap. To maintain consistent coverage spacing, what boom height adjustment should be considered for afternoon applications if conditions remain breezy?

Q47.An applicator is preparing to use a centrifugal pump sprayer with a new organophosphate concentrate. The concentrate is more viscous and oily than the water-based products previously used. What pump maintenance or operational change is most critical?

Q48.During a calibration check, an applicator measures nozzle output and finds that one flat fan nozzle (designed for 0.5 gal/min at 40 psi) is delivering 0.32 gal/min while others deliver 0.48-0.50 gal/min at the same pressure. The nozzle appears visually clean. What is the most likely issue?

Q49.A backpack sprayer user is preparing to apply a pesticide and notices the tank does not have a check valve where the fill tube enters. The sprayer includes a mechanical agitation system. What is the primary risk of this missing check valve?

Q50.An applicator has a hydraulic sprayer with both hydraulic and mechanical agitation options. The next product to be applied is a flowable fungicide (suspension formulation). Which agitation method is most appropriate for this product?

Q51.An applicator is selecting a strainer for mixing a new pesticide formulation. The product is an emulsifiable concentrate (EC) labeled as 'Use a 50-mesh strainer or finer for application.' The applicator has both 50-mesh and 100-mesh strainers available and expects variable water quality at the fill site. Which selection decision is most appropriate?

Q52.A boom sprayer is equipped with 24 nozzles, each rated at 0.5 gallons per minute (GPM) at 40 psi. The operator measures actual output at 40 psi and finds 11 GPM total across all 24 nozzles. What is the current system output per nozzle, the percentage deviation from rated output, and should nozzles be replaced?

Q53.A ground boom sprayer exhibits the following pattern: the center 8 nozzles (out of 16 total) deliver 0.52 GPM each at 40 psi, while the outer nozzles (8 on each end) deliver 0.48 GPM each. The operator notes consistent clogging at the outer nozzle positions. The pressure gauge reads 40 psi. What is the most likely root cause?

Q54.An applicator must treat a 120-acre field with an insecticide applied at 15 GPA (gallons per acre). The sprayer tank capacity is 400 gallons. If the tank is filled completely each time, how many fills are needed, and how much mix is left in the tank after the last acre is sprayed?

Q55.An applicator evaluates two sprayer systems for a 200-acre field requiring 20 GPA at a target speed of 5 mph with 30-inch boom spacing: System A (40 nozzles, rated 0.5 GPM each at 40 psi) and System B (32 nozzles, rated 0.625 GPM each at 50 psi). Which system is more appropriate for this application, and why?

Q56.A sprayer is calibrated to deliver a measured 12 GPA at 4 mph with 20-inch nozzle spacing. The target rate is 15 GPA, but the applicator cannot change nozzles or pressure. What speed adjustment is necessary to achieve 15 GPA?

Q57.A grower has a boom sprayer with nozzles delivering 0.5 gallons per minute (GPM) each at 40 PSI. The boom is 20 feet wide with 10 nozzles spaced 2 feet apart. The grower wants to achieve a target application rate of 20 gallons per acre (GPA). Given that nozzle output is fixed at current pressure settings, what ground speed is required to achieve 20 GPA, and is this speed achievable with the equipment rated for a maximum safe speed of 8 mph?