Get in touch
Questions about growing, workshops, the cooperative or partnerships? Send us a message and we will reply by email.
Prefer email? Write to erasmus@evec.org.gr
EVEC Microgreens
How Much Food Can We Grow in Urban Areas? Food Production and Crop Yields of Urban Agriculture: A Meta-Analysis
Abstract Urban agriculture can contribute to food security, food system resilience and sustainability at the city level. While studies have examined urban
Florian Thomas Payen, Daniel Evans, Natalia Falagán, Charlotte A. Hardman, Sofia Kourmpetli, Lingxuan Liu, Rachel Marshall, Bethan R. Mead, Jessica Davies
Earth s Future · 2022 · https://doi.org/10.1029/2022EF002748
Abstract
Abstract Urban agriculture can contribute to food security, food system resilience and sustainability at the city level. While studies have examined urban agricultural productivity, we lack systemic knowledge of how agricultural productivity of urban systems compares to conventional agriculture and how productivity varies for different urban spaces (e.g., allotments vs. rooftops vs. indoor farming) and growing systems (e.g., hydroponics vs. soil‐based agriculture). Here, we present a global meta‐analysis that seeks to quantify crop yields of urban agriculture for a broad range of crops and explore differences in yields for distinct urban spaces and growing systems. We found 200 studies reporting urban crop yields, from which 2,062 observations were extracted. Lettuces and chicories were the most studied urban grown crops. We observed high agronomic suitability of urban areas, with urban agricultural yields on par with or greater than global average conventional agricultural yields. “Cucumbers and gherkins” was the category of crops for which differences in yields between urban and conventional agriculture were the greatest (17 kg m −2 cycle −1 vs. 3.8 kg m −2 cycle −1 ). Some urban spaces and growing systems also had a significant effect on specific crop yields (e.g., tomato yields in hydroponic systems were significantly greater than tomato yields in soil‐based systems). This analysis provides a more robust, globally relevant evidence base on the productivity of urban agriculture that can be used in future research and practice relating to urban agriculture, especially in scaling‐up studies aiming to estimate the self‐sufficiency of cities and towns and their potential to meet local food demand.
Licence and reuse
| Licence | CC-BY-4.0 |
|---|---|
| May we host this PDF? | Yes |
| May we publish a plain-language summary? | Yes — this licence permits adaptations. |
| Commercial use permitted? | Yes |
| Share-alike required? | No |
How to credit this work
Florian Thomas Payen; Daniel Evans; Natalia Falagán; Charlotte A. Hardman; Sofia Kourmpetli; Lingxuan Liu; Rachel Marshall; Bethan R. Mead; Jessica Davies (2022). How Much Food Can We Grow in Urban Areas? Food Production and Crop Yields of Urban Agriculture: A Meta-Analysis. Earth s Future. https://doi.org/10.1029/2022EF002748 Licensed under Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/). Hosted by EVEC Athens (microgreens.org.gr). No changes were made to this article. Provided as-is, without warranties. EVEC Athens is not affiliated with, and this copy is not endorsed by, the authors or the publisher.
Explore this on our site
- How to grow it: Lettuce microgreens — growing guide
- Related reading: Microgreens the future of urban agriculture and superfoods part i
- Related reading: Microgreens as the space food
About this copy
This is a copy of the published article, hosted by EVEC Athens for free educational use under its open licence. The permanent scientific reference is the DOI above. We have not altered the file in any way. If you are an author or rights holder and want this copy removed, please use our notice and takedown procedure. We acknowledge every request within five working days, and act within ten.
Co-funded by the European Union.
This portal presents the microgreens methodology; the organisation behind it is EVEC Athens — the European Voluntary and Educational Center (evec.org.gr). Views and opinions expressed are those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the granting authority can be held responsible for them.
Open licence. Except where stated otherwise, the educational materials on this portal are licensed under CC BY 4.0 — free to use, adapt and share, including commercially, with credit. See the licence terms.
Accessibility. We aim for WCAG 2.1 AA and publish what does and does not yet meet it — see the accessibility statement. If anything here blocks you, tell us and we will send the material in a format that works for you.