Sprayer Calibration Calculator - Method 1
Instructions:
Following the steps below, enter the necessary
information
into the calculator. Then press "calculate" to display the
recommended gallons per acre (GPA) application rate.
- Enter the Gallons per Hour (GPH) rate.
To calculate the GPH:
Fill sprayer with water. Set the sprayer pressure to the
level you plan to use in the field and place a collection
container under each nozzle. Run the sprayer for 3 minutes and 45
seconds. The cups (8 oz) of water collected equals the gallons per
hour (GPH) output of the nozzle.
- Enter the nozzle spacing or row width.
- Enter Miles per Hour. If you need to calculate this, use
the MPH calculator below.
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Additional Notes:
| GPH, MPH and PSI can all be varied to achieve the desired application rate (GPA).
Gallons per acre applied can be increased by slowing the sprayer down (simplest solution),
increasing pressure, or increasing nozzle size. Gallons per acre applied can be
reduced by the opposite actions. Changing the sprayer pressure is NOT a good
means of changing sprayer output, because sprayer output only increases as the
square root of the pressure increases. For example, doubling the sprayer pressure
would only result in increasing output 1.4 times. Furthermore, increased sprayer
pressure may cause increased drift. |
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