Sprayer Nozzle Guide Aids Compliance with Pesticide Labels - UNL CropWatch, May 31, 2012
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.
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For Coarse Spray Quality 10 GPA |
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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 |
*Just into coarse droplet size | ||||
For Medium Spray Quality 10 GPA |
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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 |
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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 |
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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 |
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For Glyphosate at 10 GPA |
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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
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For 15 and 20 GPA Fungicide and/or Insecticide
This is a general recommendation. See product label. |
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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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