Nozzle Patterns on Water Sensitive Paper

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Nozzle Patterns on Water Sensitive Paper

• Developed by
• David Nicolai, REE
• Crops Hutchinson, MN
• Technical help provided by Doug Miller, Agronomy
  Dept, University of Minnesota

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Background of water sensitive paper nozzle
patterns.

• Water sensitive paper is yellow and is stained
  blue by exposure to aqueous spray droplets. These
  specially coated papers can be used for
  evaluating droplet densities.
• Papers were sprayed and scanned at the University
  of Minnesota using a spray table with a
  mechanical pendulum passing under various nozzle
  tips to simulate 8.7 mph at 40 or 60 psi.

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XR 8004 at 40 psi

• Extended Range Flat fans from TeeJet produces a
  wide range of droplet sizes from 177 to 519
  microns (fine to coarse) in size at 40 psi.
• Good fit for contact herbicides, insecticides and
  fungicides but has a high drift potential.

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Hypro TR (Total Range) Flat Fan tip at 40 psi.

• Similar to XR (extended range tips), operates at
  15-70 psi.
• Produces fine to coarse droplets.
• Available in 80 and 110 degree spray angles.

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Drift Guard Flat Spray Tip (110 degree angle at
40 psi).

• DG flat spray tips from TEE-JET have a
  pre-orifice design which produces larger droplets
  than a regular flat fan tip.
• Medium to coarse droplets at 30 to 60 psi range.

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Turbo TeeJet at 40 psi.

• Large droplets at pressures ranging from 15-90
  psi.
• Excellent for systemic herbicides, very good for
  drift control.
• Produces very coarse to coarse to medium droplets.

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Air Induction TeeJet at 60 psi.

• Produces coarse to very coarse droplets at higher
  pressures from 40-100 psi.
• Larger air-filled droplets for less drift through
  the use of a Venturi air aspirator.

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Hypro Ultra Lo-Drift at 60 psi

• Wide pressure range of 15-115 psi
• Compact air induction tip creates air-filled
  droplets of medium to coarse droplet size.
• Wide angle at 120 degrees
• Large air inlets less blocking

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Turbo TeeJet Induction tip at 60 psi

• Compact size air induction tip produces
  extremely-coarse droplets across all pressure
  ranges.
• Designed for systemic pesticides and soil applied
  herbicides only.
• Excellent drift control

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New Hypro Guardian tip at 40 psi.

• Produces medium to coarse droplets.
• Ideal for insecticides and fungicides since it
  produces a spray output at a 20 degree inclined
  spay angle from the spay tip either rearward or
  forward while moving in the field.

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Disclaimer

• Brand names appearing in this presentation are
  for identification and illustration purposes
  only.
• No endorsement is intended, nor is criticism
  implied of similar products not mentioned.