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Horticulturae 2018, 4(3), 27; https://doi.org/10.3390/horticulturae4030027

Water Use Efficiency in Urban Food Gardens: Insights from a Systematic Review and Case Study

School of Natural and Built Environments, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia
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Received: 13 July 2018 / Revised: 10 September 2018 / Accepted: 11 September 2018 / Published: 12 September 2018
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Abstract

Water use and the cost of water are key factors when considering the net value of urban agriculture (UA). This systematic review critically evaluates past and recent UA yield research from the perspective of water use efficiency. A systematic literature search was conducted using the databases Scopus, ProQuest Agriculture and Environment, and Web of Science for references from 1975 to 2018, with 25 articles meeting the inclusion criteria. Of these, only five articles had actively collected UA water use data, all on purpose-built experimental gardens. Considering the scarcity of UA water use efficiency and water measurement literature, South Australia is presented as a case study to demonstrate the considerable diversity of water pricing, water sources and irrigation methods available to urban food growers. The practical challenges of garden placement and the wide variety of cultivation techniques, water sources and irrigation methods are reviewed. Four equations to calculate the water use efficiency (WUE) of UA are proposed and demonstrated. Collection of additional UA water use data would support more robust evaluations of the water use efficiency and economic implications of different cultivation techniques. Further work in this field will enable a realistic understanding of the current and future contribution of UA to our society. View Full-Text
Keywords: systematic review; urban water management; urban agriculture; food production; water use efficiency; measurement; crop irrigation systematic review; urban water management; urban agriculture; food production; water use efficiency; measurement; crop irrigation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Pollard, G.; Ward, J.; Roetman, P. Water Use Efficiency in Urban Food Gardens: Insights from a Systematic Review and Case Study. Horticulturae 2018, 4, 27.

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