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Pesticide Application Equipment Page 78 General Manual. To Enhance Safety and Benefits and to Get the Most From Any Sprayer:. Select the right equipment. Set it up correctly. Use proper operation procedures. Perform proper maintenance. Reference Materials. The pesticide label
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To Enhance Safety and Benefits and to Get the Most From Any Sprayer: • Select the right equipment. • Set it up correctly. • Use proper operation procedures. • Perform proper maintenance.
Reference Materials • The pesticide label • Spray equipment • BLM and Extension guidelines
All Sprayers Should Be: • Durable • Convenient to fill • Convenient to operate • Easy to clean
Three Basic Functions of a Sprayer: • Distribution & Metering • Determine the volume or weight that application equipment will apply to a known area under a given set of conditions. • Storage and transport CALIBRATION
Types of Spray Equipment Hand sprayer Knapsack (LOK) Battery powered
Low pressure hydraulic High pressure ULV Chemigation or injection
Tanks • Fiberglass • Stainless steel • Galvanized steel • Aluminum • Polyethylene
Lock Opening • Large Openings • Strainer For Filling • Agitation Device Large Drain
12 GPM for Boom50 GPM for agitation62 GPM total pump requirement Agitation Agitation Requirement5% of tank volume(5 gallons for each 100 gallons) 1000 gallon tank Pump - 50 GPM just for agitation
Strainers • Tank opening • Basket Strainer (16-80 mesh) • In-line (40-50 mesh) • Nozzle screen (50 - 100 mesh)
Pumps Must Provide • Gallons per minute (GPM) required by all nozzles • Tank agitation (5 - 6 % of tank volume) • Twenty percent (20%) reserve for wear
Pump Types • Roller • Centrifugal • Gear • Turbine • Diaphragm • Piston
Positive Displacement • General Purpose • Wide range • Output • Pressures • Herbicides • Rollers can wear Roller Pump
Positive Displacement • High Pressure • Volume depends on RPMs • Insecticides • Dry Formulations • Part can wear Piston
Positive Displacement • High Pressure • High Volume • Insecticides • Herbicides • Dry Formulations • Part can wear Diaphragm
Non-positive Displacement • Continuous Flow • High RPM’s • Low Pressures • Durable • Easy to Maintain • Dry Formulations
Pump requirement (GPM) = Desired GPA x Boom Width x MPH495 For Boom Flow only Add 5 GPM for every 100 gallons of tank – page 78
Example 30 GPA x 40 feet x 5 MPH495 = 12 GPM
Pressure • Least desirable to adjust GPA • 4 x pressure to double GPA • 20 GPA at 30 psi • 40 GPA at 120 psi Small droplets = DRIFT • Minor tweeks!
Find New Pressure (psi)page 82 2 40 GPA20 GPA 2 35 psi X 35 X 2 35 X 4 New Pressure = 140 psi
Hoses • Flexible (non-collapsible if suction hose) • Durable • Resistant (sunlight, oil, chemicals, abrasion, twisting) • Sufficient Pressure Rating • Correct size
Guide for determining hose size.General Manual Page 88 Pump Output (gals/min.) Suction Hose Discharge Hose (inside diameter in inches) Under 12 GPM 3/4 5/8 12-25 GPM 1 3/4 25-50 GPM 1 1/4 1 50-100 GPM 1 1/2 1 1/4
GPA – Gallons per Acre (GPA) • Total sprayer output, delivery rate, volume applied…ad nauseum • GPM – Gallons per Minute (GPM) • Nozzles and pump output • Diluent – dilutes formulation at applicatoin • Carrier – dilutes active ingredient at manufacture
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)
What’s a good GPA? Very Fine to Fine Droplet = Low Volume (GPA) Medium to Coarse Droplets Very Coarse = High Volume
Three Functions of a Nozzle • Metering - GPA • Atomization – Liquid to drops • Pattern dispersal
MAXIMIZING SPRAYER PERFORMANCE • Nozzle materials • Stainless steel, brass and plastic are the most common. • Stainless steel is probably the best choice
VOLUME OF PESTICIDE SOLUTION APPLIED DEPENDS UPON: • NOZZLE TIPS • PRESSURE • SPEED • NOZZLE SPACING
NOZZLE TIP DESIGNATIONSSPRAYING SYSTEMS CO. • HSS8002E • HSS 80 02 E • HSS = HARDENED STAINLESS STEEL • 80 = 80 DEGREE SPRAY ANGLE • 02 = 0.2 GALLON PER MINUTE AT 40 PSI • E = EVEN FLAT FAN PATTERN FOR BAND APPLICATION
Nozzle Coding- Spraying Systems • XR means eXtended Range • 80 means 80o pattern • 03 means 0.30 GPM at 40 psi • VS means Stainless Steel withVisiFlo color coding • SS = Stainless Steel • VP = Polymer, etc
Atomization (Droplet Size) is Dependent On: • Nozzle type and orifice size • Pressure – higher pressure = small drops • Liquid characteristics
Nozzle Types Flat fan - regular Flat fan - extended range Twin flat fan - good for dense foliage
Nozzle types Even flat fan - band applications Flooding flat fan Hollow cone Full cone
MAXIMIZING SPRAYER PERFORMANCE • NOZZLES • Nozzle types • Flat fan is best for broadcast application of herbicides Flat fan Even fan
BOOM BUSTERSPRAY NOZZLES THAT WORK WITHOUT BOOMS • FEATURES • All nozzles machined from solid stainless steel. All have replaceable industrial grade nylon diffusers. (Tests have shown that this nylon will outlast stainless steel.)
Boom Buster (con’t) • Extra wide spray pattern. • Excellent pattern and distribution. • All models spray chemicals and fertilizers. • All nozzles have standard pipe threads.
Boom Buster (con’t) • USES • Row Crops, Grain and Pastures • State and County Right-of-Ways • Orchards and Vineyards • Forestry and Utility Right-of-Ways • Lawn and Turf • Roads, Hedge Rows and Fence Rows
Rule of Thumb • An 8004 nozzle will deliver 40 gpa when used at 3 mph with 40 psi. • Likewise an 8002 will deliver 20 gpa under the same conditions. • An 8001 will deliver 10 gpa.