Useful Tools

Calibration of Boom Spray Equipment.

1/ To calculate the application rate of a boom, the following calculation can be used: 

An example is included for your benefit:

A boom has a total output of 24 litres per minute from all nozzles, travels 200 mtrs per minute and has a swath width (effective spray width0 of 12 mtrs.


                              Total Nozzle Output                ÷               Distance travelled                   ÷                  Swath width                       x                  10,000                                                                 =            Liquid Applic Rate

                              (in lts/min)                                                   (in mtrs/min)                                               (in mtrs)                                               (in lts/ha)   


  24   ÷  200   ÷   12   ×  10000   =  100
    ÷     ÷     ×     =  
    ÷     ÷     ×     =  
    ÷     ÷     ×     =  



2/  To calculate the amount of chemical to be put in a tank, the following calculation can be used:

 Tank size  ÷ Liquid App Rate x Chemical App Rate = Tot Chem to be added to Tank

    (lts)                (lts/ha)             (lts or kgs/ha)                             (lts or kgs)   

                                               (from calculation 1)  


Spray Record Sheets.

A Spray Record Sheet is included in our Chemical Accreditation Course Manual.

Others are available from Qld DAF.


Hazardous Substances Manifests.

A Hazardous Substances Manifest is included in our Chemical Accreditation Manual.  




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Countryco Training Information

Countryco Training Pty Ltd delivers Chemical Accreditation Courses in Qld & NSW. Our Courses are all one day and Face-to-Face. 

Geoff Paton is the Principal of Countryco Training. He started the business in 1989 after years of experience in agriculture, both in Australia & overseas.

Geoff delivers the Chemical Acreditation and Supervision Skills Courses.