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An early trial at the Department of Agriculture’s Moumāhaki Demonstration Farm near Waverley, Taranaki, shows the importance of superphosphate fertiliser to the growth of kūmara (sweet potato). Kūmara from the plot without fertiliser (left) are much smaller than the fertilised crops.
Te whakamahi i tēnei tūemi
Reference: B/AGG/65
Permission of the Whanganui Regional Museum must be obtained before any re-use of this image.