msu extension pesticide education turfgrass pest management (category 3a) pesticide application...

MSU Extension Pesticide Education

Turfgrass Pest Turfgrass Pest Management (Category 3A)Management (Category 3A)

Pesticide Application Pesticide Application Chapter 4Chapter 4


Thinking applicatorThinking applicator


Selecting a PesticideSelecting a Pesticide Labeled for the pest or site.Labeled for the pest or site.

Produces desired level of control.Produces desired level of control.

Least disruptive to the environment.Least disruptive to the environment.


Selecting a PesticideSelecting a Pesticide

Non-phytotoxic.Non-phytotoxic.

Economically practical.Economically practical.

Compatible with turf management.Compatible with turf management.

Acceptable to the public.Acceptable to the public.


Classifying PesticidesClassifying Pesticides Type of pest controlled.Type of pest controlled.

Pesticide chemistry.Pesticide chemistry.

Mode of action.Mode of action.

Pesticide formulation.Pesticide formulation.


To use any pesticide in a manner inconsistent with its label is a violation of federal and state law.


Type of Pest ControlledType of Pest Controlled InsecticideInsecticide

AcaricideAcaricide

NematicideNematicide

FungicideFungicide

RodenticideRodenticide

AvicideAvicide

HerbicideHerbicide

InsectsInsects

Mites and ticksMites and ticks

NematodesNematodes

FungiFungi

Rats and rodentsRats and rodents

BirdsBirds

WeedsWeeds


Toxicity Category LD50 Signal Word

I Up to 50mg/kg

Danger

II 51-500 mg/kg Warning

III 501-5,000mg/kg

Caution

IV > 5,000 mg/kg Caution


Select “Caution” pesticides when possible and avoid RUP’s!


Pesticide Mode of ActionPesticide Mode of Action

Broad spectrumBroad spectrum

Residual Residual pesticidepesticide

ProtectantProtectant

SystemicSystemic

ContactContact

Nonselective Nonselective herbicideherbicide

Selective Selective HerbicideHerbicide


Pesticide FormulationsPesticide Formulations When selecting, consider: When selecting, consider:

– Application methodApplication method

– Ease of storage and mixingEase of storage and mixing

– Risk when handlingRisk when handling

– Risk of moving off targetRisk of moving off target

– CostCost


Pesticide FormulationsPesticide Formulations Emulsifiable Emulsifiable

Concentrates: E, Concentrates: E, ECEC

Wettable Powders: Wettable Powders: WPWP

Soluble Powders: Soluble Powders: SPSP

Flowable: F, LFlowable: F, L

Granules: GGranules: G

BaitsBaits


Be familiar Be familiar with your with your

equipment equipment specifications.specifications.


Pesticide Application Pesticide Application EquipmentEquipment

Granular spreadersGranular spreaders

Spray output equipmentSpray output equipment

Controlled droplet (CDA)Controlled droplet (CDA)

Small-capacity sprayersSmall-capacity sprayers

Hydraulic sprayersHydraulic sprayers


Granular SpreadersGranular Spreaders Drop (gravity) spreadersDrop (gravity) spreaders

– pattern= width of spreaderpattern= width of spreader– uniform coverage or target areauniform coverage or target area

abrupt edgesabrupt edges

Rotary spreadersRotary spreaders– coverage wider than spreadercoverage wider than spreader

overlap required for uniformityoverlap required for uniformity drift to nontarget areasdrift to nontarget areas


Spray EquipmentSpray Equipment

Traditional spray gunsTraditional spray guns Shower head gunShower head gun

– Large droplets Large droplets – Low pressureLow pressure

Spray wandSpray wand Spray boomsSpray booms


Spray NozzlesSpray Nozzles Nozzles are classified by:Nozzles are classified by:

– Spray delivery patternSpray delivery pattern– Spray angleSpray angle– Discharge rateDischarge rate– Construction materialConstruction material

Nozzles used outside of specified Nozzles used outside of specified rates and pressure will not work rates and pressure will not work accurately.accurately.


Nozzle TypesNozzle Types Flat patternFlat pattern Uniform when boom is Uniform when boom is

at proper height.at proper height.

Broadcast patternBroadcast pattern Not uniform.Not uniform.


Nozzle TypesNozzle Types

Flooding fanFlooding fan Hollow coneHollow cone

Best for Best for direct direct spraying spraying not boom.not boom.

Not as Not as uniform uniform as flat as flat fanfan.


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


Controlled Droplet Controlled Droplet ApplicatorsApplicators

Commonly called:Commonly called:– Rotary spray nozzles or spinning diskRotary spray nozzles or spinning disk

Droplet size is uniform; varies with:Droplet size is uniform; varies with:– Cup diameterCup diameter– SpeedSpeed– Flow ratesFlow rates

Uses limited water.Uses limited water.


Small-Capacity SprayersSmall-Capacity Sprayers Used for small areas and spot Used for small areas and spot

treatments:treatments:

– Most are hand sprayersMost are hand sprayers

– Most use compressed airMost use compressed air

– May have a wand, gun, small boomMay have a wand, gun, small boom

– Tank pressure drops as solution is sprayedTank pressure drops as solution is sprayed

– Minimal agitation -- WPs settleMinimal agitation -- WPs settle


Hydraulic SprayersHydraulic Sprayers Used for most large scale applications.Used for most large scale applications. Spray material delivered through:Spray material delivered through:

– Hand held gunHand held gun– BoomBoom

High and low High and low

pressures possible.pressures possible. Large capacity Large capacity

tanks available.tanks available.


How you apply a pesticide is equally as important to pest management as your choice of the pesticide product and application equipment.


Apply Apply onlyonly the amount of the amount of pesticide necessary to obtain pesticide necessary to obtain the desired level of pest the desired level of pest control.control.


Application TechniquesApplication Techniques

– Apply only where pests are Apply only where pests are located.located.

– Don’t allow activities to reduce Don’t allow activities to reduce effectiveness:effectiveness:Rain, not watering-in, etc.Rain, not watering-in, etc.

– Tailor applications to pest habits:Tailor applications to pest habits:Water-in grub control materialsWater-in grub control materials


Applying Granular ProductsApplying Granular Products

Fill equipment on paved surface.Fill equipment on paved surface. Make “header” strips around the Make “header” strips around the

property.property.– Keep material off paved surfaces and out of Keep material off paved surfaces and out of

flower bedsflower beds

Treat property will parallel swaths.Treat property will parallel swaths.– Use correct overlapUse correct overlap

– Turn off spreader before header stripTurn off spreader before header strip


Applying Granular ProductsApplying Granular Products

Keep spreader level.Keep spreader level.

Walk at consistent pace.Walk at consistent pace.

Don’t stop without shutting Don’t stop without shutting off spreader.off spreader.

Don’t operate backwardsDon’t operate backwards

– Application may changeApplication may change


Before SprayingBefore Spraying

Put on Put on protective gear.protective gear.

Rinse and clean Rinse and clean system.system.

After filling, After filling, check for leaks.check for leaks.

Adjust equipment Adjust equipment according to according to recommendations recommendations and label.and label.

Limit drift.Limit drift.

Check for uniform Check for uniform output.output.


During Spray ApplicationsDuring Spray Applications

Wear protective Wear protective gear.… label.gear.… label.

Operate Operate according to according to owner’s manual.owner’s manual.

Check for nozzle Check for nozzle clogging or clogging or pattern changes.pattern changes.

Clean nozzles Clean nozzles with a soft tool, with a soft tool, not metal.not metal.

Never unclog a Never unclog a nozzle by nozzle by blowing through blowing through it.it.


After SprayingAfter Spraying

Flush hoses, tanks, Flush hoses, tanks, nozzles.nozzles.

Wipe off residues. Wipe off residues.

Clean equipment Clean equipment before:before:– Making repairsMaking repairs

– Switching pesticidesSwitching pesticides

Check operation and Check operation and repair.repair.

Re-use rinse water.Re-use rinse water.

Do not use herbicide-Do not use herbicide-designated equipment designated equipment for other applications.for other applications.


Applying Pesticide SpraysApplying Pesticide Sprays

Point showerhead nozzle away from Point showerhead nozzle away from legs and feet.legs and feet.

Do not drape hose around neck or Do not drape hose around neck or waist.waist.

Concentrate on accuracy:Concentrate on accuracy:

– Walking speed, pressure, pattern.Walking speed, pressure, pattern.


Applying Pesticide SpraysApplying Pesticide Sprays

Spray in parallel swaths.Spray in parallel swaths. Use straight edges as a starting guide.Use straight edges as a starting guide. Maintain straight walking lines.Maintain straight walking lines. Maintain proper overlap.Maintain proper overlap. ““Trim” margins:Trim” margins:

– Margins only receive 1/2 rates and need Margins only receive 1/2 rates and need an adjusted application.an adjusted application.


Records

Pesticide Record KeepingPesticide Record KeepingRegulation 636Regulation 636

Address of applicationAddress of application Name and concentration of pesticideName and concentration of pesticide Amount of pesticideAmount of pesticide Target pest or purposeTarget pest or purpose Method and rate of applicationMethod and rate of application

Pesticide Record KeepingPesticide Record KeepingKeep general use pesticide application records for at least one year, and keep RUP application records three years.

Other helpful information may include...

•Name of applicator

•Certification number

•EPA registration number

•Date of last calibration

•Time of application

•Weather conditions

•Specific treated area

•Target pest stage


Pesticide use record sheet.

msu extension pesticide education turfgrass pest management (category 3a) pesticide application...

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