The Basic Function of a Sprayer:

1. The Basic Function of a Sprayer: Distribution & Metering Apply a dilute amount of herbicide (Rate) in a determined volume of water (GPA) to a known area.

2. Application Methods Broadcast

3. Multiple NozzlesEvenly spacedEqual Output Even Pattern

4. Spot Treatment

5. Types of Spray Equipment--Spot Treatment -- ATV Knapsack Hand sprayer

6. ATV’s? What’s wrong with this picture? Backpack and hand sprayers What’s wrong with this picture?

7. Calibrating a Backpack/Spray Gun 18 ½ x 18 ½ Ounces = GPA

8. Standardize Pumping Pressure http://www.rittenhouse.ca/ Nozzle Mount Pressure Regulator $15.00 - $18.00

9. Injector Systems

10. Tanks • Fiberglass • Stainless steel • Galvanized steel • Aluminum • Polyethylene

12. Agitation

13. Agitation 50 GPM for agitation12 GPM for Boom62 GPM total pump requirement Agitation Requirement5% of tank volume(5 GPM for each 100 gallons) 1000 gallon tank Pump - 50 GPM just for agitation

14. Strainers • Tank opening • Basket Strainer (16-80 mesh) • In-line (40-50 mesh) • Nozzle screen (50 - 100 mesh)

15. PUMPS - must provide at least: • Gallons per minute (GPM) required by all nozzles • GPM - tank agitation (5 - 6 % of tank volume)

16. Pump Types • Roller • Centrifugal • Gear • Turbine • Diaphragm • Piston

17. Positive Displacement • General Purpose • Wide range • Output • Pressures • Herbicides • Rollers can wear Roller Pump

18. Non-positive Displacement • Continuous Flow • High RPM’s • Low Pressures • Durable • Easy to Maintain • Dry Formulations

20. 2000 m - #2 Pencil lead 850 m - paper clip 420 m – staple 300 m - toothbrush bristle 150 m - sewing thread 100 m - human hair Comparison of Micron Sizes(approximate)

22. What’s a good GPA? Very Fine to Fine Droplet = Low Volume (GPA) Medium to Coarse Droplets Very Coarse = High Volume

23. Read them labels!!

24. Three Functions of a Nozzle • Metering - GPA • Atomization – Liquid to drops • Pattern dispersal

25. MAXIMIZING SPRAYER PERFORMANCE • Nozzle materials • Stainless steel, brass and plastic are the most common. • Stainless steel is probably the best choice

26. Nozzles: Wear vs Cost

27. VOLUME OF PESTICIDE SOLUTION APPLIED DEPENDS UPON: • NOZZLE TIPS - GPM • PRESSURE –Consistent, prevent drift • SPEED - MPH • NOZZLE SPACING - Uniformity

28. Nozzle Types Flat fan - regular Flat fan - extended range Twin flat fan - good for dense foliage

30. Nozzle Orientation

31. Nozzle types Even flat fan - band applications Flooding flat fan Hollow cone Full cone

32. Flood Jet

33. BOOM BUSTERSPRAY NOZZLES THAT WORK WITHOUT BOOMS • FEATURES • Machined from solid stainless steel.  • Replaceable nylon diffusers.

34. Roadside Spray Boom

35. Boom Buster (con’t) • Extra wide spray pattern. • Excellent pattern and distribution. • All models spray chemicals and fertilizers. • All nozzles have standard pipe threads.

36. HOW TO CHANGE SPRAYER OUTPUT • NOZZLES • Best for large changes in output

37. HOW TO CHANGE SPRAYER OUTPUT • Pressure • Only feasible within a limited pressure range • Pressure must be increased by a factor of 4 in order to double the flow • 10 GPA at 20 PSI • 20 GPA at 80 PSI

38. HOW TO CHANGE SPRAYER OUTPUT • SPEED • Only feasible within a limited range of speeds

39. Ground Speed • Cut speed by ½ =doubles output. Double ground speed decreases output by ½

40. That's All ?