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The benefits of exotic food crops cultivated by small-scale growers in the UK

Published online by Cambridge University Press:  06 September 2017

S. Kell ,
A. Rosenfeld ,
S. Cunningham ,
S. Dobbie  and
N. Maxted
S. Kell*
Affiliation:
School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
A. Rosenfeld
Affiliation:
Garden Organic, Ryton on Dunsmore, Coventry, CV8 3LG, UK
S. Cunningham
Affiliation:
Garden Organic, Ryton on Dunsmore, Coventry, CV8 3LG, UK
S. Dobbie
Affiliation:
Institute for Complex Systems Simulation, University of Southampton Highfield Campus, University Road, Southampton, SO17 1BJ, UK
N. Maxted
Affiliation:
School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
*
*Corresponding author: s.kell@bham.ac.uk
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Abstract

Exotic crops—plant species grown in relatively small quantities and not traditionally cultivated in a country or region—are often intimately linked with the ethnic origins of their maintainers and are a principal source of culinary and nutritional diversity for many people. Recognizing that a wealth of exotic crop diversity and associated knowledge is held by small-scale growers in the UK, Garden Organic initiated the Sowing New Seeds project to capture and preserve some of this valuable resource by building a seed collection and knowledge base. To establish a sample of this diversity and knowledge, we undertook a survey at 31 allotment sites in the Midlands region of the UK with the objectives of identifying the exotic crops cultivated, characterizing the demography of those who grow them, understanding their direct use values, and assessing their potential indirect use value for the diversification and improvement of other crops. Results reveal that 26% of the food crops recorded are exotic and that they are grown by people belonging to 13 different ethnic groups. The majority save their own seed, indicating that these crops are performing well in the UK, with grower selection providing the basis for their continuing success. Further, most maintainers swap seed with other growers, indicating that exotic crops are likely to be gradually diversifying in response to different growing conditions—a positive sign for their value for local food security and as national genetic resources with potential for use in crop improvement programs. The research highlights the multitude of benefits that growers obtain through cultivating exotic crops, which are not only related to nutrition and culinary requirements, but also to general health and well-being, culture, and a range of other forms of life enrichment. It is critical that growers are encouraged and supported in continuing to cultivate, save and pass on their exotic crops to younger generations, as well as to protect allotments from development in order to maintain this important diversity adapted to local growing conditions. Importantly, many exotic crops currently grown on a small scale may enter into commerce, and thus expand the diversity of the UK's food crop base. Such a shift may be particularly important in the face of the increasingly detrimental impacts of climate change on crop production. We conclude that exotic crop diversity could be more important for future nutrition, health and food security than we currently appreciate.

Keywords

exotic cropscrop diversityplant genetic resourcesin situ conservationex situ conservationclimate changefood security
Type
Research Paper
Information
Renewable Agriculture and Food Systems , Volume 33 , Special Issue 6: Themed Content: Critical Foodscapes , December 2018 , pp. 569 - 584
Copyright
Copyright © Cambridge University Press 2017 

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