Turf and Ornamental Pest Control Robert E. Wolf BAE Dept. Kansas State University

Application Equipment: uTwo basic types of application systems: Liquid (sprayers) Granular

Types of application devices: uCentrifugal, rotary, or broadcast uDrop uPendulum uPneumatic

Calibrating granular spreaders: uReduces complaints about weed, insect, and disease control. uLowers incidences of using wrong amounts. uMinimizes potential problems to the environment.

Factors influencing granular rates: uSize of metering orifice. uSpeed of the agitator or rotor. uTravel speed uRoughness of the application area. uTopography of the application area. uFlowability of the granules. uQuality of the granules/mix. uTemperature and humidity. uWind

Checking distribution pattern: uOpen area – bounce and scatter. uPreferred method – use collection containers on a line perpendicular to the direction of travel. uEnough boxes to cover 1½ times the anticipated swath width. uMake several passes over the boxes – in the same direction. uEmpty contents from containers into a tube or bottle.

Pattern distributions: Primary collection

Determining the swath width using the tube method: uCompare the tubes. uDetermine the tube that is ½ the amount of the center tube. uThese two tubes determine the boundaries 5 10 feet 5 5 ft.

Effective swath width:

Final pattern:

Pattern distributions: Swath To Wide Side Wind

Header strips and swath overlap: uRecommended application method: First pass at ½ rate using calibrated swath width Second path on centerline of previous pass

Types of Application - Liquid uFoliage sprays (shrubs, trees) uArea coverage (soils or lawns) uSpot sprays uLAWN Fertilization Weed control Insect/Fungi control u HORT Fertilization Insect/Disease control Dormant oil treatments

Application Equipment Manual Sprayers Compressed air Knapsack Spray Management Valve CF Valve Easy Spray Valve

SHURflo SRS-540 u4 gallon tank u12 volt, 7.0 Amp/hour sealed battery u120 gallons per charge u12 volt SHURflo psi uMicroprocessor pump control uVariable speed uAdjustable nozzle

Powered Boom Sprayers

Professional Lawn Care

Sprayer Components: uTanks (contamination issues) uPump, Strainers, Agitation uPressure gauge uHoses, Flow control assemblies uElectronics: monitors-computers- controllers (GPS/GIS) uDistribution system uNozzles!!!!!!!!!

Types of Pumps: uRoller Pump uCentrifugal Pump uDiaphragm Pump uPiston Pump uPeristaltic Pump (Squeeze or hose pump – chemical injection)

Inside the pumps: Positive displacement Non-Positive displacement

Centrifugal Pump Seal Problems: uRun dry seal failure: uPressure spike seal failure: uAbrasive seal failure:

Misapplication: Without proper attention to the equipment, you may end up with a …… Misapplication

Hand Sprayer Calibration Spraying to the point of runoff uproduct added to each gal. or 100 gal. uuniform coverage-dripping from leaves utime and gallons per tree/1000 sq. ft. “Dilute” Technique important!!

A spray gun has a swath of 10 ft. For uniform distribution of spray use 100% overlap. This creates an effective width of 5 ft. Calibration For Hand Spray Guns Step 1: Mark off a calibration course of 1000 sq. ft.

Accurately measure the time required to spray the calibration course using a proper technique. Remember only record the amount of time the gun is actually spraying. Step 2: Step 3: Measure the flow rate from the gun. Using the time recorded in Step 2 collect the output from the gun in a graduated container for the period of time in Step 2. Hand Spray Guns, cont.

Example: It took 50 seconds for an applicator to spray the 1000 sq. ft. calibration course. The amount of spray collected from the gun in the 50 seconds was 1.4 gallons. Hand Spray Guns: cont. The application rate for this example is: 1.4 gallons per 1000 sq. ft. or 61 gallons per acre (43.56 x 1.4)

Vertical Reach at Various Pressures (Spray Gun)

Sericea Lespedeza – Star Thistle Control

Nozzle Technology? uNozzles designed to reduce drift uImproved drop size control uEmphasis on ‘Spray Quality’

NOZZLE TYPES: FLAT SPRAY Extended Range Flat-Fan Turbo Flat-Fan Drift Reduction Flat-Fan Turbo Flood Off center Flat-Fan

Spray Characteristics are Important Demonstrates Turbo Flat vs TurboDrop-5 MPH Wind

Is this tip good or bad?

Off-Center Venturi Flat-fan

Boom Buster

XP BoomJet

Boom Extender:

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