Application Equipment and Calibration Flashcards

Which application method delivers pesticide directly into the soil profile and is most appropriate for soil-incorporated treatments?

Answer: Band application with incorporation tillage

Band application followed by incorporation tillage places the pesticide directly into the root zone and is a standard method for soil-applied herbicides and insecticides.

A pesticide applicator is calibrating a hand-held sprayer by the 'ounce per 1,000 sq ft' method. She walks at a normal pace, sprays a 1,000 sq ft area, and catches 16 oz of output. The label calls for 12 oz/1,000 sq ft. What is the correct adjustment?

Answer: Walk faster or reduce pressure to decrease output

Since the sprayer is putting out 16 oz but only 12 oz is needed, the applicator must reduce output by increasing pace or lowering pressure.

In chemigation (applying pesticides through irrigation systems), which safety device is REQUIRED to prevent pesticide backflow into the water source?

Answer: Anti-siphon or backflow prevention device

An anti-siphon or backflow prevention device is legally required in chemigation to protect water sources from pesticide contamination.

An applicator needs to treat a 5-acre field with a pesticide at 3 gallons per acre. How many total gallons of spray mixture should the sprayer tank hold to complete the job in one fill?

Answer: 15 gallons

Total volume = 5 acres × 3 gallons/acre = 15 gallons of spray mixture.

Which statement about electrostatic sprayers is correct?

Answer: They give droplets an electrical charge so they wrap around and adhere to plant surfaces

Electrostatic sprayers impart an electrical charge to droplets, which causes them to be attracted to and wrap around grounded plant surfaces, improving coverage.

When using a boom sprayer, overlapping spray passes by more than the recommended amount will most likely result in:

Answer: Double or excess application in the overlapping zone, risking crop injury or residue violations

Excessive overlap means the overlapping area receives double the intended dose, which can cause crop phytotoxicity or violate pesticide label use rates.

A pesticide label states the product should be applied at 1 pint per acre. The applicator's sprayer is calibrated to deliver 20 gallons per acre. How many fluid ounces of product should be added to a 100-gallon spray tank?

Answer: 80 fl oz

100 gallons ÷ 20 gal/acre = 5 acres covered; 5 acres × 1 pint/acre = 5 pints = 80 fl oz of product needed.