TENNESSEE PESTICIDE EVALUATION SET ANSWERS
AND QUESTIONS SURE A+
✔✔What is the nozzle pattern of a flat fan nozzle? - ✔✔Tapered edges with medium
droplets; best for general broadcast herbicide.
✔✔What is the droplet size category for very coarse droplets? - ✔✔Blue.
✔✔What is the recommended wind speed for spraying? - ✔✔Spray in the 3-10 mph
window; below 3 mph often signals an inversion.
✔✔What is the standard procedure for cleaning between herbicide and ornamental
spraying? - ✔✔Triple-rinse: flush with clean water, use a cleaning agent, and final rinse
with clean water.
✔✔How do you calculate the area of a rectangle? - ✔✔Area = length × width.
✔✔What is the formula for calculating GPA in a broadcast boom? - ✔✔GPA = (5,940 ×
GPM) / (MPH × W).
✔✔What is the 1/128th acre method for calibration? - ✔✔Spray/collect from an 18.5 ft ×
18.5 ft plot; ounces collected equals GPA.
✔✔What does the dilution rule formula C1V1 = C2V2 represent? - ✔✔It relates the
concentration and volume of two solutions.
✔✔How do you determine the travel speed in mph? - ✔✔MPH = (feet traveled /
seconds) × 0.682.
✔✔What is the purpose of a nozzle uniformity check? - ✔✔To ensure that each nozzle's
output is within ±5% of the average output.
, ✔✔What is the formula for calculating the amount of product from an a.i. rate? -
✔✔Liquid: Desired lb a.i./acre / lb a.i./gal of formulation.
✔✔What is the area of a circular bed with a 50-ft diameter? - ✔✔Area = π × r² = 3.14 ×
25² = 1,962.5 ft².
✔✔What is the conversion for 1 acre in square feet? - ✔✔1 acre = 43,560 ft².
✔✔What is the maximum droplet size for acceptable control? - ✔✔Use the largest
droplet size that still provides acceptable control.
✔✔What is the GPA if you collect 22 oz in a 1/128 acre plot? - ✔✔22 GPA.
✔✔What is the output of a nozzle if it collects 45 oz over 1 minute? - ✔✔GPM = 45 ÷
128 = 0.352 GPM.
✔✔What is the conversion from ft/sec to mph for 200 ft in 34 seconds? - ✔✔≈ 4.0 mph
✔✔How much product is needed per acre when the label calls for 1.5 lb a.i./acre and
the product is 4EC? - ✔✔1.5 qt/acre or 3.0 pt/acre
✔✔What is the total amount of product needed for a property with 12.5 acres at 8
oz/acre? - ✔✔100 oz or 6.25 lb total
✔✔How many fl oz of concentrate are needed to make 25 gallons of a 2% spray
solution? - ✔✔64 fl oz of concentrate
✔✔How many gallons of a 25% concentrate are needed to make 75 gallons of a 1%
spray solution? - ✔✔3.0 gal concentrate and 72 gal water
✔✔What is the application rate per 1,000 ft² for a rotary spreader that collected 4.2 lb of
product over 3,000 ft²? - ✔✔1.4 lb per 1,000 ft²
✔✔What is the equivalent band rate for a broadcast label rate of 3.0 oz/acre when
band-treating a 14-in strip on 30-in row spacing? - ✔✔1.4 oz/acre
✔✔Which nozzle should be replaced under the ±5% rule if tested nozzles yielded 30,
32, 29, 35, 31, 28 oz? - ✔✔The nozzle at 35 oz exceeds the acceptable range and must
be cleaned/replaced.
✔✔What is the definition of 'Vernation' in turfgrass identification? - ✔✔How the newest
leaf is folded before it emerges — folded (flat/V-shaped) or rolled (cylindrical)
AND QUESTIONS SURE A+
✔✔What is the nozzle pattern of a flat fan nozzle? - ✔✔Tapered edges with medium
droplets; best for general broadcast herbicide.
✔✔What is the droplet size category for very coarse droplets? - ✔✔Blue.
✔✔What is the recommended wind speed for spraying? - ✔✔Spray in the 3-10 mph
window; below 3 mph often signals an inversion.
✔✔What is the standard procedure for cleaning between herbicide and ornamental
spraying? - ✔✔Triple-rinse: flush with clean water, use a cleaning agent, and final rinse
with clean water.
✔✔How do you calculate the area of a rectangle? - ✔✔Area = length × width.
✔✔What is the formula for calculating GPA in a broadcast boom? - ✔✔GPA = (5,940 ×
GPM) / (MPH × W).
✔✔What is the 1/128th acre method for calibration? - ✔✔Spray/collect from an 18.5 ft ×
18.5 ft plot; ounces collected equals GPA.
✔✔What does the dilution rule formula C1V1 = C2V2 represent? - ✔✔It relates the
concentration and volume of two solutions.
✔✔How do you determine the travel speed in mph? - ✔✔MPH = (feet traveled /
seconds) × 0.682.
✔✔What is the purpose of a nozzle uniformity check? - ✔✔To ensure that each nozzle's
output is within ±5% of the average output.
, ✔✔What is the formula for calculating the amount of product from an a.i. rate? -
✔✔Liquid: Desired lb a.i./acre / lb a.i./gal of formulation.
✔✔What is the area of a circular bed with a 50-ft diameter? - ✔✔Area = π × r² = 3.14 ×
25² = 1,962.5 ft².
✔✔What is the conversion for 1 acre in square feet? - ✔✔1 acre = 43,560 ft².
✔✔What is the maximum droplet size for acceptable control? - ✔✔Use the largest
droplet size that still provides acceptable control.
✔✔What is the GPA if you collect 22 oz in a 1/128 acre plot? - ✔✔22 GPA.
✔✔What is the output of a nozzle if it collects 45 oz over 1 minute? - ✔✔GPM = 45 ÷
128 = 0.352 GPM.
✔✔What is the conversion from ft/sec to mph for 200 ft in 34 seconds? - ✔✔≈ 4.0 mph
✔✔How much product is needed per acre when the label calls for 1.5 lb a.i./acre and
the product is 4EC? - ✔✔1.5 qt/acre or 3.0 pt/acre
✔✔What is the total amount of product needed for a property with 12.5 acres at 8
oz/acre? - ✔✔100 oz or 6.25 lb total
✔✔How many fl oz of concentrate are needed to make 25 gallons of a 2% spray
solution? - ✔✔64 fl oz of concentrate
✔✔How many gallons of a 25% concentrate are needed to make 75 gallons of a 1%
spray solution? - ✔✔3.0 gal concentrate and 72 gal water
✔✔What is the application rate per 1,000 ft² for a rotary spreader that collected 4.2 lb of
product over 3,000 ft²? - ✔✔1.4 lb per 1,000 ft²
✔✔What is the equivalent band rate for a broadcast label rate of 3.0 oz/acre when
band-treating a 14-in strip on 30-in row spacing? - ✔✔1.4 oz/acre
✔✔Which nozzle should be replaced under the ±5% rule if tested nozzles yielded 30,
32, 29, 35, 31, 28 oz? - ✔✔The nozzle at 35 oz exceeds the acceptable range and must
be cleaned/replaced.
✔✔What is the definition of 'Vernation' in turfgrass identification? - ✔✔How the newest
leaf is folded before it emerges — folded (flat/V-shaped) or rolled (cylindrical)
