Table 4.


 HERBICIDE SPRAYER CALIBRATION TABLE: BRUSH BOOM FOR BROADCAST SPRAYING

 TO USE THIS TABLE: have sprayer equipped with proper nozzle tips and with tips, tractor speed and
 spraying pressure adjusted as for field operation. Then, operate unit in field and collect spray
 liquid discharged by several nozzle tips over a measured distance of 300 ft.
 Average quantity of liquid sprayed per tip in OUNCES. Locate this figure in left-hand column
 of table and read directly the gallons per acre rate under the nozzle spacing column for your boom.

 AMOUNT OF SPRAY GALLONS PER ACRE APPLIED
 DELIVERED BY ONE AT NOZZLE SPACINGS OF:
 NOZZLE IN 300 Ft. 15 inches 18 inches 21 inches

 8 ounces 7.3 6.1 5.2
 10 9.1 7.6 6.5
 12 10.9 9.1 7.8
 14 12.7 10.6 9.1
PT 16 14.5 12.1 10.4
 18 16.3 13.6 11.7
 20 18.2 15.1 13.0
 22 20.0 16.6 14.3
 24 21.8 18.2 15.6
 26 23.6 19.7 16.9
 28 25.4 21.2 18.2
 30 27.2 22.7 19.5
QT 32 29.0 24.2 20.8

Example: When run down the field at operating speed and pressure a sprayer has an average
nozzle tip delivery of 26 ounces of solution in 300 ft. Nozzles tips are spaced 18 in.
apart on the boom. The gallons per acre rate is found in the 18 inch column opposite
26 ounces: 19.7 gpa.