Application Technology Flashcards
Importance of getting it right
Maximise benefits of chemical - cost effective
Minimise adverse affects
Good Practice
Use chemicals as part of IPM Select chem carefully - safety, residues, resistance, effectiveness Impliment for OHS Be aware of legal obligations Ensure competency Good application technology Clean up Monitor and keep records
Principle of chemical application
Minimal chemical for max effect
Chemical applicaiton
ID pest select right pesticide Select suitable equipment Conduct risk assessment set up Equipment Best time of applicaiton Decrease chem waste Label directions Clean up Records
Non spray application Methods
Spreader Wipers Fumigator Fogger Smoker Dips Bait stations Injectors - into trees Chemigators - add to irrigation water
Rate
Chemical per area rate
Dose
Chemical deposition per unit area
Coverage
% of target area reached
Factors affecting deposition on target
Velocity, droplet size, speed, volume
Uptake of chemical
Stress, humidity, temp, does, rain
Fine spray
Less than 100 micro mill
Coarse spray
Great that 300 micro mill
Size of droplets affects
Trajectory in air
drift potential
Evaporation potential
Decrease droplet size =
More numbers of droplets
more drift
Causes of drift
Inappropriate droplet size
Inappropriate equip set up
Inappropriate pesticide formation
Stayed in adverse weather
Results of drift
Damage to non target crop
Costly
Enviro damage
death of beneficial org.
10 steps to managing drift
Select low hazard products Read label ID susceptable area Communicate Avoid adverse weather Control Droplet size Control tradgectory Modify sprayer Use buffer zones Records
Idea wind speed
Ideal ground temp
3-15
10-30
Level of risk depends on
Level and nature of hazard Level of exposure Frequency Skill of operater Precautions Taken
Describe how hydraulic sprayers work
Pressurised liquid through nozzle
List advantages and disadvantages of hydraulic sprayers
Components are simple
Equipment can be tailored to individual situation
Range of droplet sizes for diff situations
Some nozzles wear rapidly
Wastage- drift of small droplets, run-off arge droplets
Describe how CDA sprayers work
Controlled droplet applicators
Info required for calibration of spayer
L/min
Time
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