SPRAY NOZZLE TECHNICAL INFORMATION

• GPM: Gallons Per Minute
• GPA: Gallons Per Acre
• mph: Miles Per Hour
• W: Nozzle spacing (in inches) for broadcast spraying
  • Spray width (in inches) for single nozzle, band spraying or boomless spraying.
  • Row spacing (in inches) divided by the number of nozzles per row for directed spraying.

Multiple Nozzles Over the Row: Band Spraying Application - GPA Formulas
Do not confuse band applications with cutting recommended gallon per acre rates. The rate applied on a Banding basis is normally the same rate recommended for broadcast applications. Banding of agricultural chemicals allows for increased acreage to be covered with the same tank volume by reducing the area being treated. Multiple nozzles over the row applications are calculated similar to a single nozzle banding except the flow calculated by the formula should then be divided by the quantity of nozzles producing the band.

SPRAYING SOLUTIONS OTHER THAN WATER - NEW METHOD: Since all the tabulations are based on spraying water, which weighs 8.34 lbs. per USA gallon, conversion factors must be used when spraying solutions which are heavier or lighter than water. To determine the proper size nozzle for the solution to be sprayed, first convert the desired GPM or GPA of solution to a water rate using the conversion factors. Use the new converted GPM or GPA rate to select the proper size nozzle.

NOZZLE SPACING:
If the nozzle spacing on your boom is different than those tabulated, multiply the tabulated GPA coverages by one of the following factors:

SPRAY COVERAGE INFORMATION:
This table lists the theoretical coverage of spray patterns as calculated from the included spray angle of the spray and the distance from the nozzle orifice. These values are based on the assumption that the spray angle remains the same throughout entire spray distance. In actual practice, the tabulated spray angle does not hold for long spray distances.