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Turf and Ornamental Pest Control

Robert E. Wolf BAE Dept. K-State University. Turf and Ornamental Pest Control. Application Equipment:. Two basic types of application systems: Liquid (sprayers) Granular. Spray Application Equipment. Manually Operated Sprayers Compressed-air sprayers Backpack sprayers Mist blowers

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Turf and Ornamental Pest Control

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  1. Robert E. Wolf BAE Dept. K-State University Turf and Ornamental Pest Control

  2. Application Equipment: • Two basic types of application systems: • Liquid (sprayers) • Granular

  3. Spray Application Equipment • Manually Operated Sprayers • Compressed-air sprayers • Backpack sprayers • Mist blowers • Power Hydraulic Sprayers • Low pressure boom sprayers • Tanker/Hose end sprayers

  4. Dry Application Equipment • Granular Applicators • Centrifugal/Rotary • Drop/Gravity • Pendulum • Pneumatic

  5. Types of Application • Foliage sprays (shrubs, trees) • Area coverage (soils or lawns) • Spot sprays • LAWN • Fertilization • Weed control • Insect/Fungi control • HORT • Fertilization • Insect/Disease control • Dormant oil treatments

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

  7. Powered Boom Srayers

  8. Professional Lawn Care

  9. Sprayer Components: • Tanks (contamination issues) • Pump, Strainers, Agitation • Pressure gauge • Hoses, Flow control assemblies • Electronics: monitors-computers- controllers (GPS/GIS) • Distribution system • Nozzles!!!!!!!!!

  10. Roller Pump Centrifugal Pump Diaphragm Pump Piston Pump Peristaltic Pump (Squeeze or hose pump – chemical injection) Types of Pumps:

  11. Misapplication: Without proper attention to the nozzle, you may end up with a …… Misapplication

  12. Why is the Nozzle Important? • Amount of spray applied • Uniformity of the spray • Coverage on the target • Amount of off-target drift

  13. 1. Control the Amount applied: Nozzle Flow Rate is affected by: • Orifice size • Pressure • Solution characteristics

  14. Calculations #$!@&%! GPA= 5940

  15. Calibration/Nozzle Selection: • What is the first step? • Use label to select the • application volume • product rate • Choose an appropriate travel speed • Effective width of application • nozzle spacing • Calculate GPM – Flow rate per nozzle • Select the correct size of nozzle!

  16. Calculations Ok, now I remember! GPA= 5940

  17. Flow Rate Equation: • Calculates for amount of flow from one nozzle • Represents the size of nozzle to put on the sprayer Equation # 2

  18. GPM Example Solution: .71 Answer

  19. Calculate GPM (formula) Look under GPM column Match to pressure-psi Choose the size needed Operate at given pressure and speed used in formula to achieve GPA Selecting the proper nozzle…. .71

  20. MEASURE SPEED (1 MPH = 88 Feet traveled in 60 seconds) Measure the ground speed in an area similar to the conditions of the area to be sprayed!

  21. Electronics/Rate Controllers • How does your system work when speed changes? • Is it pressure based? • What is the effect of going slower? • What is the effect of going faster?

  22. Checking for accuracy!!!

  23. Hand Sprayer Calibration A. Spraying to the point of runoff “Dilute” • product added to each gal. or 100 gal. • uniform coverage-dripping from leaves • time and gallons per tree/1000 sq. ft. Technique important!!

  24. B.Calibration For Hand Spray Guns 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. Step 1: Mark off a calibration course of 1000 sq. ft.

  25. Hand Spray Guns, cont. Step 2: 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 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.

  26. 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. • The application rate for this example is: • 1.4 gallons per 1000 sq. ft. • or • 61 gallons per acre (43.56 x 1.4)

  27. For more information contact: rewolf@ksu.edu www.bae.ksu.edu/rewolf/

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