In regions with low annual rainfall, irrigation allows farmers to increase production, and also to have reliable production from year to year. Irrigation systems are costly and so the crops or animal produce from the farm must be able to more than compensate for the investment.
Te whakamahi i tēnei tūemi
Archives New Zealand - Te Rua Mahara o te Kāwanatanga
Reference:
Canterbury is a Hundred. National Film Unit, 1950

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