Application Equipment for ASR
• Bobby Grisso• Biological Systems Engineering
New Technologies Needed?
DropletClassification
Droplet Size (microns)
Recommended Uses
Fine 119 - 216 Insecticides andFungicides
Medium 217 - 353
Medium 217 - 353 Herbicides andPostemergence
Coarse 354 - 464
Very Coarse > 464 Soil Applicationsof Herbicides
Glyphosate Insecticide Fungicide
Spray Target
Weeds – not soybean plants or leaves per se
All soybean leaves and stems, including bottom surface of leaves
All soybean leaves, especially lower part of plant and bottom surface of leaves
Drift Control
Critical to prevent damage to adjacent crops or plants
Generally important when using pesticides to prevent off-target movement
Generally important when using pesticides to prevent off-target movement
Volume 10 gal/acre 10 to 20 gal/acre 10 to 20 gal/acre
Pressure 20 to 30 psi, depending on nozzle
40 to 50 psi, depending on nozzle
50 psi or higher, depending on nozzle
Nozzle Type
hollow cone or other
Twin flat fan or flat fan
Twin flat fan or flat fan
RestrictSpeed?
Usually not necessary
May be necessary to help insure uniform coverage
May be necessary to help insure uniform coverage
BMP’s for Nozzle SelectionBMP’s for Nozzle Selection
• Application rate = 20 GPA
• Use MEDIUM droplets
• Use a twin nozzle package
• Purchase your nozzles NOW!
• Prepare your sprayer and calibrate NOW!
20222426283032
3436384042
Yie
ld (
bu
/acr
e)
Control Hollow Cone
Twin Flat Fan
Flat Fan
20222426283032
3436384042
Yie
ld (
bu
/acr
e)
Control Hollow Cone
Twin Flat Fan
Flat Fan
20 40 80
Turbodrop XL @ 20, 40, 80 psi XR Flat-fan @ 20, 40, 80 psi
20 40 80
BMP’s for Nozzle SelectionBMP’s for Nozzle Selection
• Application rate = 20 GPA
• Use MEDIUM droplets
• Use a twin nozzle package
• Purchase your nozzles NOW!
• Prepare your sprayer and calibrate NOW!
Nozzle Selection Chart: Flat-fan
Soybean Rust – medium droplet
Nozzle Selection Chart: Flat-fan
TT11002 73 TT11003 73 TT11004 73 XR11006 50XR8003 32 XR8004 41 XR8005 46 11006 50
8003 32 XR11004 41 XR11005 46XR11004 18 8004 41 8005 46
11004 41 11005 46DG11004 41 XR11006 32XR11005 26 11006 32
10
Nozzle Spacing =20" and 20 GPA
Speed (mph)
Pressure (psi) to achieve a MEDIUM Droplet
4 6 8
Single Nozzle
TT11003 73 XR8005 59XR8004 41 8005 59
XR11004 41 DG8005 598004 41 DG11005 59
11004 41 XR11006 41DG11004 41 11006 41XR11005 26
Nozzle Spacing =30" and 20 GPAPressure (psi) to achieve a MEDIUM Droplet
Speed (mph)4 6
Single Nozzle
Twin Nozzles
XR8002 18 DG8002 41 TT11002 73 DG8003 50 TT11003 73XR11002 18 DG11002 41 XR8003 32 DG11003 50 XR8004 41
TT11002 41 8003 32 TT11003 50 XR11004 41XR8003 18 XR11004 18 XR8004 28 8004 41
XR11003 18 XR11004 28 11004 41XR11005 18 DG11004 41
XR11005 26
Speed (mph)
Pressure (psi) to achieve a MEDIUM Droplet2-Nozzles & Spaced =20" and 20 GPA
124 6 8 10
XR8004 56 TT11004 73 XR8005 59 XR11006 508004 56 XR8005 46 8005 59 11006 50
DG8004 56 XR11005 46 DG8005 59DG11004 56 8005 46 DG11005 59XR11005 36 11005 46 XR11006 41
8005 36 XR11006 32 11006 4111005 36 11006 32
20Speed (mph)
14 16 18
Twin Nozzles
DG8002 41 XR8003 41 TT11003 73 XR8005 41 XR8005 59 XR11006 56DG11002 41 8003 41 XR8004 41 XR11005 41 8005 59 11006 56TT11002 41 DG8003 41 XR11004 41 8005 41 DG8005 59XR8003 18 DG11003 41 8004 41 11005 41 DG11005 59
XR11003 18 XR11004 23 11004 41 XR11006 28 XR11006 41DG11004 41 11006 41XR11005 26
12 14Speed (mph)
4 6 8 10
Pressure (psi) to achieve a MEDIUM Droplet2-Nozzles & Spaced =30" and 20 GPA
Nozzle Spacing
Spray
Height
12”
110° 110° 110°
Nozzle Spacing
Spray
Height
12”
110° 110° 110°
Air-assisted sprayersAir-assisted sprayers
Air-assisted sprayers
Spray Coupe with ESP
Electrostatic Spraying
Application Decisions?
BMP’s for Nozzle SelectionBMP’s for Nozzle Selection
• Application rate = 20 GPA
• Use MEDIUM droplets
• Use a twin nozzle package
• Purchase your nozzles NOW!
• Prepare your sprayer and calibrate NOW!