Turfgrass Pest Management (Category 3A)

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Turfgrass Pest Management (Category 3A)

• Pesticide Application Chapter 4

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Thinking applicator
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Selecting a Pesticide

• Labeled for the pest or site.
• Produces desired level of control.
• Least disruptive to the environment.

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Selecting a Pesticide

• Non-phytotoxic.
• Economically practical.
• Compatible with turf management.
• Acceptable to the public.

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Classifying Pesticides

• Type of pest controlled.
• Pesticide chemistry.
• Mode of action.
• Pesticide formulation.

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Type of Pest Controlled

• Insecticide
• Acaricide
• Nematicide
• Fungicide
• Rodenticide
• Avicide
• Herbicide

• Insects
• Mites and ticks
• Nematodes
• Fungi
• Rats and rodents
• Birds
• Weeds

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Pesticide Mode of Action

• Broad spectrum
• Residual pesticide
• Protectant
• Systemic

• Contact
• Nonselective herbicide
• Selective Herbicide

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Pesticide Formulations

• When selecting, consider
• Application method
• Ease of storage and mixing
• Risk when handling
• Risk of moving off target
• Cost

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Pesticide Formulations

• Emulsifiable Concentrates E, EC
• Wettable Powders WP
• Soluble Powders SP

• Flowable F, L
• Granules G
• Baits

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Be familiar with your equipment specifications.
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Pesticide Application Equipment

• Granular spreaders
• Spray output equipment
• Controlled droplet (CDA)
• Small-capacity sprayers
• Hydraulic sprayers

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Granular Spreaders

• Drop (gravity) spreaders
• pattern width of spreader
• uniform coverage or target area
• abrupt edges
• Rotary spreaders
• coverage wider than spreader
• overlap required for uniformity
• drift to nontarget areas

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Spray Equipment

• Traditional spray guns
• Shower head gun
• Large droplets
• Low pressure
• Spray wand
• Spray booms

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Spray Nozzles

• Nozzles are classified by
• Spray delivery pattern
• Spray angle
• Discharge rate
• Construction material
• Nozzles used outside of specified rates and
  pressure will not work accurately.

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Nozzle Types

• Flat pattern
• Uniform when boom is at proper height.

• Broadcast pattern
• Not uniform.

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Nozzle Types

• Flooding fan

• Hollow cone

• Best for direct spraying not boom.

• Not as uniform as flat fan.

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Abrasive materials, like wettable powders, cause
nozzles to wear. Worn nozzles alter application
rates. Calibrate, check, and replace worn
nozzles.
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Controlled Droplet Applicators

• Commonly called
• Rotary spray nozzles or spinning disk
• Droplet size is uniform varies with
• Cup diameter
• Speed
• Flow rates
• Uses limited water.

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Small-Capacity Sprayers

• Used for small areas and spot treatments
• Most are hand sprayers
• Most use compressed air
• May have a wand, gun, small boom
• Tank pressure drops as solution is sprayed
• Minimal agitation -- WPs settle

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Hydraulic Sprayers

• Used for most large scale applications.
• Spray material delivered through
• Hand held gun
• Boom
• High and low
• pressures possible.
• Large capacity
• tanks available.

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How you apply a pesticide is equally as important
to pest management as your choice of the
pesticide product and application equipment.
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Apply only the amount of pesticide necessary to
obtain the desired level of pest control.
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Application Techniques

• Apply only where pests are located.
• Dont allow activities to reduce effectiveness
• Rain, not watering-in, etc.
• Tailor applications to pest habits
• Water-in grub control materials

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Applying Granular Products

• Fill equipment on paved surface.
• Make header strips around the property.
• Keep material off paved surfaces and out of
  flower beds
• Treat property will parallel swaths.
• Use correct overlap
• Turn off spreader before header strip

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Applying Granular Products

• Keep spreader level.
• Walk at consistent pace.
• Dont stop without shutting off spreader.
• Dont operate backwards
• Application may change

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Before Spraying

• Put on protective gear.
• Rinse and clean system.
• After filling, check for leaks.

• Adjust equipment according to recommendations and
  label.
• Limit drift.
• Check for uniform output.

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During Spray Applications

• Wear protective gear. label.
• Operate according to owners manual.
• Check for nozzle clogging or pattern changes.

• Clean nozzles with a soft tool, not metal.
• Never unclog a nozzle by blowing through it.

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After Spraying

• Flush hoses, tanks, nozzles.
• Wipe off residues.
• Clean equipment before
• Making repairs
• Switching pesticides

• Check operation and repair.
• Re-use rinse water.
• Do not use herbicide-designated equipment for
  other applications.

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Applying Pesticide Sprays

• Point showerhead nozzle away from legs and feet.
• Do not drape hose around neck or waist.
• Concentrate on accuracy
• Walking speed, pressure, pattern.

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Applying Pesticide Sprays

• Spray in parallel swaths.
• Use straight edges as a starting guide.
• Maintain straight walking lines.
• Maintain proper overlap.
• Trim margins
• Margins only receive 1/2 rates and need an
  adjusted application.

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Pesticide Record KeepingRegulation 636

• Address of application
• Name and concentration of pesticide
• Amount of pesticide
• Target pest or purpose
• Method and rate of application

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Pesticide Record Keeping
Keep general use pesticide application records
for at least one year, and keep RUP application
records three years.
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• Name of applicator
• Certification number
• EPA registration number
• Date of last calibration
• Time of application
• Weather conditions
• Specific treated area
• Target pest stage

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Pesticide use record sheet.