Spraying fungicide on a crop such as potatoes would cause too much damage if done with ground equipment. If available, an aircraft fitted with a spray boom can do the job quickly and efficiently. Flying only a few metres above the crop, the aircraft performs a spectacular operation.
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Permission of the Alexander Turnbull Library, National Library of New Zealand, Te Puna Mātauranga o Aotearoa, must be obtained before any re-use of this image.