Sprayer Nozzle Guide Aids Compliance with Pesticide Labels - UNL CropWatch, May 31, 2012

Sprayer Nozzle Guide Aids Compliance with Pesticide Labels - UNL CropWatch, May 31, 2012

Published before 2015

May 31, 2012

Many pesticide labels now list recommended spray particle size (or sizes) for application. Following the label guides can increase pesticide efficacy and help manage spray drift.

While not currently required, it’s expected that the EPA may soon be suggesting (or requiring) the use of validated drift reduction technologies (DRT) to further reduce spray drift. This can include selection of the appropriate nozzle and adjuvant for the intended application as well as consideration of wind speed, application height, droplet size, and providing a buffer zone.

The following charts list suggested nozzle tips, pressure and speeds (lower speeds are preferred for application) for the various spray droplet sizes. To simplify the charts, only Spraying Systems nozzles were included. Most nozzle manufacturers will have nozzle tips similar to the ones listed. Always check the pesticide label for the required or suggested application information.

Bob Klein
Extension Crops Specialist, West Central REC
 

Table 1. Recommended sprayer nozzle tips, pressures, and speeds to achieve various droplet sizes.
For Coarse Spray Quality 10 GPA
   Nozzle Spacing
 Speed mph  Rate
gpm 		 20-inch Rate
gpm 		 30-inch
 6  0.202 TT110025 @ 26 psi  0.303 AIXR110025 @ 59 psi
 7  0.236 TT11003 @ 25 psi*  0.354 AIXR11003 @ 56 psi*
or TT11004 @ 31 psi*
 8  0.269 TT11003 @ 32 psi  0.404 TT11004 @ 41 psi
10 0.337 AIXR11003 @ 50 psi*
or TT11004 @ 28 psi* 		0.505 TT11005 @ 41 psi*
 12  0.404 AIXR11003 @ 72 psi
or TT11004 @ 41 psi 		 0.606 XRC11008VK @ 23 psi
or TT11005 @ 59 psi
 14  0.471  TT11004 @ 55 psi  0.707

XRC11008VK @ 31 psi
or TT11006 @ 55 psi

 *Just into coarse droplet size
For Medium Spray Quality 10 GPA
   Nozzle Spacing
 Speed mph  Rate
gpm 		 20-inch Rate
gpm 		 30-inch
 6  0.202 TT11002 @ 41 psi  0.303 TT110025 @ 59 psi
 7  0.236 TT110025 @ 36 psi*
or TT11002 @ 56 psi 		 0.354 TT11003 @ 56 psi* or XRC11004VK @ 31 psi
 8  0.269 TT110025 @ 46 psi  0.404 TT11003 @ 73 psi
or XRC11005VK @ 26 psi
10 0.337 TT11003 @ 50 psi*
or XRC11004VK @ 28 psi 		0.505 XRC11005VK @ 41 psi
or XRC11006VK @ 28 psi*
 12  0.404  XRC11005VK @ 26 psi  0.606  XRC11006VK @ 41 psi
 14  0.471  XRC11005VK @ 35 psi  0.707  XRC11006VK @ 55 psi
 *Just into medium droplet size
For Coarse Spray Quality 20 GPA
   Nozzle Spacing
 Speed mph  Rate
gpm 		 20-inch Rate
gpm 		 15-inch
 6 0.404 AIXR11003 @ 72 psi
or TT11004 @ 41 psi 		 0.303 AIXR110025 @ 59 psi
 7  0.471 TT11004 @ 55 psi 0.354  AIXR11003 X 56 psi*
or TT11004 @ 31 psi*
 8  0.538  TT11005 @ 46 psi* 0.404 TT11004 @ 41 psi
10 0.674  TT11006 @ 50 psi*
or XRC11008VK @ 28 psi 		0.505  TT11005 @ 41 psi*
 12 0.808  XRC11008VK @ 41 psi*
or TT11006 @ 72 psi 		0.606  XRC11008VK @ 23 psi
or TT11005 @ 59 psi
 14 0.942  XRC11010VK @ 35 psi  0.707 XRC11008VK @ 31 psi
or TT11006 @ 55 psi
 *Just into coarse droplet size
For Medium Spray Quality 20 GPA
   Nozzle Spacing
 Speed mph  Rate
gpm 		 20-inch Rate
gpm 		 15-inch
 6  0.404 XRC11005VK @ 26 psi  0.303  TT110025 @ 59 psi
 7 0.471  XRC11005VK @ 35 psi  0.354 TT11003 @ 56 psi*
or XRC11004VK @ 31 psi
 8  0.538  TT11004 @ 72 psi
or XRC11006VK @ 32 psi 		0.404  TT11003 @ 73 psi
or XRC11005VK @ 26 psi
10 0.674  XRC11006VK @ 50 psi  0.505 XRC11005VK @ 41 psi
or XRC11006VK @ 28 psi*
 12 0.808  XRC11008VK @ 41 psi  0.606 XRC11006VK @ 41 psi
 14 0.942 XRC11008VK @ 55 psi 0.707  XRC11006VK @ 51 psi

 *Just into medium droplet size
For Glyphosate at 10 GPA
   Nozzle Spacing
 Speed mph  Rate
gpm 		 20-inch Rate
gpm 		 30-inch
 6  0.202 AIXR110002 @ 41 psi  0.303 AIXR11003 @ 41 psi
 7  0.236 AIXR110025 @ 36 psi  0.354 AIXR11003 @ 56 psi
or AIXR11004 @ 31 psi
 8  0.269 AIXR11003 @ 32 psi or AIXR110025 @ 46 psi  0.404 AIXR11004 @ 41 psi
10 0.337 AIXR11003 @ 50 psi
or AIXR11004 @ 28 psi 		0.505 AIXR11005 @ 41 psi
12 0.404 AIXR11004 @ 41 psi 0.606 AIXR11006 @ 41 psi

 

14 0.471 AIXR11004 @ 56 psi
or AIXR11005 @ 36 psi 		0.707 AIXR11006 @ 55 psi

 

For 15 and 20 GPA Fungicide and/or Insecticide

This is a general recommendation. See product label.

   Nozzle Spacing
 Speed mph  Rate
gpm/gpa 		 20-inch Rate
gpm/gpa 		 30-inch
 6 0.303/
15 		XRC11003VK @ 41 psi 0.455/
15 		XRC11004VK @ 52 psi
 7 0.354/
15 		XRC11004VK @ 31 psi 0.530/
15 		XRC11005VK @ 45 psi
 8 0.404/
15 		XRC11004VK @ 41 psi  0.606/
15 		XRC11006VK @ 41 psi
10 0.674/
20 		XRC11006VK @ 50 psi 0.505/
20 		15-inch Spacing
XRC11005VK @ 41 psi
 12 0.808/
20 		 TJ60-11008 @ 41 psi 0.606/
20 		15-inch Spacing
XRC11006VK @ 41 psi
 14  0.943/
20 		 TJ60-11008 @ 56 psi 0.707/
20 		15-inch Spacing
XRC11006VK @ 55 psi

 

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