Biology Reference
In-Depth Information
Figure 1
Aerosol
pressurized spray
Hose End
Sprayer
Trigger
Sprayer
Continuous
Sprayer
Shaker
Can
Pressure
Can
Wheel-
barrow
Sprayer
Slide
Pump
Sprayer
Compressed
Air
Sprayer
Bucket
Pump
Sprayer
Knapsack
Sprayer
Drop
Spreader
Centrifugal
Spreader
Root
Irrigator
Plunger
Duster
Crank
Duster
satisfactory, but for flowering shrubs-azaleas,
roses, etc.-a spray rod, curved at the end, or
with an angle nozzle, is easier on the plants and
more effective, allowing for better coverage of
underside of foliage.
The size of the hole in the nozzle disc and the
pressure determine the amount of spray used. The
volume of spray ejected per minute doubles or
triples with each small increase in the hole size
or pressure used. This means that in a home garden
where the objective is to cover a few rose bushes
effectively a large amount of spray can be wasted
at too high pressure, an expensive item with many
pesticide mixtures costing 20 to 30 cents a diluted
gallon. Most chemicals are corrosive, and even if
Figure 2
Spray application techniques
