Agricultural extension policy: The missing link in innovations in extension and advisory services. O.I. Oladele, North-West University, South Africa.

Developing innovative, pluralistic extension systems in a changing global economy. B.E. Swanson, University of Illinois at Urbana-Champaign, USA.

Innovation systems and institutional change. N.G. Rōling and D. Hounkonnou, Wageningen University, The Netherlands

Approaches to private agricultural extension service delivery in Africa: Lessons from current development initiatives in Nigeria. A.A. Ladele, University of Ibadan, Nigeria

The politics of seed in Africa's green revolution: Alternative narratives and competing pathways. I. Scoones and J. Thompson, University of Sussex, UK

Investment requirements in extension to achieve zero hunger and adapt to climate change. M. Blum and J. Szonyi, Food and Agriculture Organization of the United Nations, Italy