Research Communicaons Fonio (Digitaria exilis (Kippist) Stapf): A Socially Embedded Cereal for Food and Nutrion Security in Senegal Baye Magae Diop1,2, Mame Codou Gueye1*, Codjo Emile Agbangba1,3, Ndiaga Cissé1, Monique Deu4,5, Omar Diack2,6, Amadou Fofana5, Ndjido Ardo Kane6,7, Khadidiatou Ndoye Ndir8, Ibrahima Ndoye2, Ablaye Ngom2, Chrisan Leclerc4,5, Marie Piquet7,8,10, Yves Vigouroux9, Leila Zekraoui7,8,10, Claire Billot4,5, Adeline Barnaud7,8,10 1Centre d'Etude Régional pour l'Amélioraon de l'Adaptaon à la Sécheresse (CERAAS), Instut Sénégalais de Recherches Agricoles (ISRA), Thiès Escale, Thiès, Sénégal 2Laboratoire de Biotechnologies Végétales, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar (UCAD), Dakar‐Fann, Sénégal 3Laboratory of Biomathemacs and Forest Esmaons, Faculty of Agronomic Science (FSA), University of Abomey‐Calavi, 03 BP 2819, Cotonou, Bénin 4CIRAD, UMR AGAP, F‐34398 Montpellier, France 5AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France 6Centre Naonal de Recherche Agronomique (CNRA), Instut Sénégalais de Recherches Agricoles (ISRA), Bambey, Diourbel, Sénégal 7Laboratoire Naonal de Recherches sur les Producons Végétales, Instut Sénégalais de Recherches Agricoles (ISRA), Centre de recherche de Bel Air, Dakar, Sénégal 8Laboratoire mixte internaonal Adaptaon des Plantes et microorganismes associés aux Stress Environnementaux (LMI LAPSE), Centre de recherche de Bel Air, Dakar, Sénégal 9Département de Producon Végétale, Ecole Naonale Supérieure d’Agriculture (ENSA), Université de Thiès, BP A296, Route de Khombole, Thiès, Sénégal 10Unité mixte de Recherche Diversité et Adaptaon des Espèces (UMR DIADE), Instut de Recherche pour le Développement (IRD), Université de Montpellier, Montpellier, France *[email protected] Abstract Agricultural diversificaon with neglected and underulized species is a viable way to sustainably increase the producvity of agrosystems. Understanding the social, cultural, and ecological roles of these species is crucial for their promoon. White fonio (Digitaria exilis), a neglected cereal endemic to West African Sahelian countries, is recognized as a crop for the future due to its cultural, nutrional, and economic values. In this study, we described fonio farming systems in Senegal through an ethnobotanical approach. As expected in family farming systems, farmers largely pracced diversified subsistence agriculture on small plots and relied on local seed exchange networks. The importance of fonio varied among agroecological zones, ethnic groups, and gender. In the Groundnut Basin, where agriculture is more mechanized, late‐ maturing landraces of fonio are culvated as a cash crop rather than a staple crop. However, in southern Senegal, where food shortages are recurrent, fonio is more widespread and the culvaon of both early‐ and late‐maturing landraces contributes to local food security. These differences also reflect the cultural status of fonio: different among ethnic groups and more important for women than for men. Finally, the regressive dynamics of fonio culvaon in most regions emphasizes the need to develop integrated conservaon and promoon strategies that take into account the diversity of social and agronomical roles of the plant. Received August 2, 2017 OPEN ACCESS Accepted June 14, 2018 DOI 10.14237/ebl.9.2.2018.1072 Keywords Family farming system, Neglected and underulized species, Cereals, Agricultural diversificaon, Ethnobotany Copyright © 2018 by the author(s) licensee Society of Ethnobiology. This is an open‐access article distributed under the terms of the Creative Commons Attribution‐NonCommercial 4.0 International Public License (https://creativecommons.org/licenses/by‐nc/4.0), which permits non‐commercial use, distribution, and reproduction in any medium, provided the original author and source are credited. Supplementary Files available at ojs.ethnobiology.org/index.php/ebl/arcle/view/1072 Introduction small-scale family farms cannot invest in costly adaptative strategies, climate change may increase Climate change may have negative impacts on their vulnerability. One way to buffer this is to agricultural production (Kumar and Sharma 2013; promote agricultural diversification (Lin 2011). For Lobell and Gourdji 2012; Ward et al. 2014). Because Diop et al. 2018. Ethnobiology Leers 9(2):150–165 150 Research Communicaons Figure 1 Map of Senegal showing the locaons of the three study zones. Points symbolize the ethnic identy of the villag‐ es (based on the main ethnic group per village) surveyed in the Groundnut Basin (GB), in Eastern Senegal (ES) and in Casa‐ mance (C). this purpose, neglected and underutilized species Dogon in Mali, and the Peul, Bassari, Bedik, and (NUS) can play an important role (Hall and Rudebjer Koniagui in Senegal and Guinea, fonio has great 2016). The growing interest in NUS also reflects an cultural value: it is the main food during traditional increasing trend in agriculture to develop new crops ceremonies such as marriages, baptisms, sacrifices, or for local markets and exportation (Padulosi et al. funerals (Adoukonou-Sagbadja et al. 2006; de 1999). Lestrange and Passot-Guevara 1981; Dieterlen 1955; In this paper, we focus on white fonio (Digitaria Gessain 1989). Fonio has a large diversity of local exilis Stapf), a neglected crop endemic to West African varieties (landraces) that differ in terms of life cycle Sahelian countries (Portères 1976), the cultivation of duration; landraces with the shortest life cycle (less which extends from 8° to 14° N latitude and from than two months) could thus play a useful role in Senegal in the west to Lake Chad in the east (Cruz et preventing food shortages (Blench 2012; Gessain al. 2011). For the Lambo and Akposso in Togo, the 1989; Gomila and Clarkson 1983; Portères 1955). Diop et al. 2018. Ethnobiology Leers 9(2):150–165 151 Research Communicaons In addition, fonio is considered to be one of the and, to a lesser extent, by the ethnic composition of tastiest and most nutritious cereals in Africa (Jideani their populations (Figure 1). 1990). It contains a very low level of gluten, and while The first region is located in groundnut-producing it does not have a high protein content, all twenty basin (Gray 2002) in central Senegal. This region, amino acids are present, in particular two essential known as Groundnut Basin (GB), is characterized by ones (methionine and cysteine) which are lacking in relatively flat topography and a Sahelo-Sudanian most major cereals such as wheat, rice, sorghum, and climate (mean annual rainfall 724 mm). Major crops barley (Vietmeyer et al. 1996). Fonio can thus are groundnut (Arachis hypogaea), cultivated mainly as contribute to nutrition security, an increasing concern cash crop, pearl millet (Pennisetum glaucum), and for all countries (Asfaw 2006; Popkin et al. 2012). All sorghum (Sorghum bicolor subsp. bicolor). These species these properties allow for the potential to generate are sometimes associated with cowpea (Vigna significant financial returns for farmers, and, unguiculata), condiments (Hibiscus esculentus, Capsicum significantly, for women, who are traditionally annuum, C. frutescens), sorrel (Hibiscus sabdariffa) and involved in transformation and marketing (Paraïso et livestock raising (Pélissier 1966). Agriculture is mainly al. 2011; USAID 2008). performed under rainfed conditions (fewer than 2% The southern region of Senegal has a long of agricultural households practice irrigation [ANSD tradition of fonio cultivation (Portères 1955). The 2014a]) and is oriented towards a market economy led recurrence of food shortages in this region (Lo 1998; by groundnut (Pélissier 1966). It is highly Ndao 2004) suggests that early maturing fonio heterogeneous in terms of ethnic occupation, with landraces could have strategic importance (Portères Wolof populations cohabiting with Mandingo, Peul, 1955; Ruskin et al. 1996). However, cultivated on Serer, and Koniagui groups in the west, and in the east small areas (0.25 to 1 ha, after Cruz et al. 2011), it with Mandingo and Peul (Gessain 1989; Pélissier remains a marginal cultigen representing less than 1% 1966). of overall cereal production in Senegal (ANSD The last two regions are located in the southern 2014a). Moreover, only 20% of the fonio marketed part of Senegal. The south of the Oriental Senegal and consumed within the country is produced locally region (OS) is characterized by the highest and hilliest (USAID 2008). reliefs in the country. Climate is sub-Guinean with For all these reasons, fonio has received particular average annual rainfall of 1,103 mm. Agriculture is attention in diversification policies (Fall and Lo 2009). mainly rainfed (fewer than 1% of agricultural Until now, research has mainly focused on technical households practice irrigation [ANSD 2014b]) and itineraries and mechanization (Gueye et al. 2015; thus conducted from May to November. Agriculture Kanfany et al. 2016), neglecting seed management and is dominated by cereals: maize (Zea mays), sorghum, farmers’ practices related to their perceptions of fonio African rice (Oryza glaberrima), and fonio. However, diversity (Diedhiou 2008). local production of these cereals does not cover food The objective of this study was to characterize the needs (Ndiaye 2000). Livestock raising is a marginal socio-cultural and ecological role of fonio and its activity and is conducted mainly by the Peul cultivation in Senegal. We describe the agrosystems (Chataigner 1963; Ndiaye 2000). This area is integrating