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.
Read more about Aerial Topdressing: Success in New Zealand, Aircraft, Developing Specialist Machines, Mature Industry, Environmental Impact
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“Every year lays more earth upon us, which weighs us down from aerial regions, till we go under the earth at last.”
—E.T.A.W. (Ernst Theodor Amadeus Wilhelm)