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

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

May 31, 2012

Table 1. Recommended sprayer nozzle tips, pressures, and speeds to achieve various droplet sizes.

For Coarse Spray Quality 10 GPA

For Medium Spray Quality 10 GPA

For Coarse Spray Quality 20 GPA

For Medium Spray Quality 20 GPA

For Glyphosate at 10 GPA

For 15 and 20 GPA Fungicide and/or Insecticide

Online Master of Science in Agronomy