1. Afari-sefa V (2007) The dynamic of horticultural export value chains on the livelihood of small farm households in Southern Ghana. Afr J Agric Res 2(9):435–440
2. Aggeri F, Hatchuel A (2003) Ordres socio-économiques et polarisation de la recherche dans l’agriculture: pour une critique des rapports science/société. Sociol Travail 45(1):113–133
3. Akeampong E (1998) Plantain production, marketing and consumption in West and central Africa. In: C. Pick, E. Fouré and E.A. Frison (eds) Bananas and Food Security: Les productions bananières: un enjeu économique majeur pour la sécurité alimentaire, international symposium, Douala, Cameroon, pp 353–359
4. Akinnifesi Festus K, Ajayi OC, Sileshi G, Chirwa PW, Chianu J (2010) Fertiliser trees for sustainable food security in the maize-based production systems of East and Southern Africa. Agron Sustain Dev 30(3):615–629. doi: 10.1051/agro/2009058
5. Asenso-okyere K, Davis K, Aredo D (2008) Advancing agriculture in developing countries through knowledge and innovation. Synopsis of an international conference. IFPRI, Washington