Finding:

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   Aerial topdressing

   Aerial topdressing is the spreading of fertilisers such as superphosphate over farmland with the use of aircraft. Aerial topdressing was developed in New Zealand in the 1940s and was rapidly adopted elsewhere in the 1950s.
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   Agricultural aircraft

   After more effective insecticides and fungicides were developed in the 1940s, and aerial topdressing was developed by government research in New Zealand, purpose-built agricultural fixed-wing aircraft became common.
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   de Havilland Tiger Moth

   The front seat was replaced with a hopper to hold superphosphate for aerial topdressing.
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   Aerial application

   The specific spreading of fertilizer is also known as aerial topdressing.
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   Auster Agricola

   Aerial topdressing
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   Royal New Zealand Air Force Museum

   In the post war period it was used for target towing, communications and aerial topdressing trials.
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   Alan Pritchard

   Using a Miles Whitney Straight from 1939 on his own initiative and sometimes forging aircraft log books to conceal his work, Pritchard conducted trials of aerial seed sowing and spreading fertilizer which ultimately lead to the development of aerial topdressing.
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   PAC Fletcher

   One of the first designed for aerial topdressing, the Fletcher has also been used for other aerial applications as a utility aircraft, and for sky diving.
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   de Havilland Canada DHC-2 Beaver

   It is used for cargo and passenger hauling, aerial application (crop dusting and aerial topdressing), and has been widely adopted by armed forces as a utility aircraft.
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    Miles Whitney Straight

    These trials were part of the experiments which lead to the development of aerial topdressing, (see also Agricultural aircraft).

Explore the following pages on Powerset:

• Aerial topdressing,
• Agricultural aircraft,
• de Havilland Tiger Moth,
• Aerial application,
• Auster Agricola,
• Royal New Zealand Air Force Museum,
• Alan Pritchard,
• PAC Fletcher,
• de Havilland Canada DHC-2 Beaver,
• Miles Whitney Straight