A growing variety of public and private rural advisory services are available today, leading to increasingly pluralistic service systems (PSS) – in which advisory services are provided by different actors and funded from different sources. PSS have emerged in many countries as a response to a decline in public sector extension and the increasing demand for tailored, diverse and market-oriented services. Private companies, non-governmental organizations and producer organizations, today play more active roles alongside traditional public sector providers.
There have been numerous episodes of widespread adoption of improved seed and long-term achievements in the development of the maize seed industry in Sub-Saharan Africa. This summary takes a circumspect view of technical change in maize production. Adoption of improved seed has continued to rise gradually, now representing an estimated 44 percent of maize area in Eastern and Southern Africa (outside South Africa), and 60 percent of maize area in West and Central Africa. Use of fertilizer and restorative crop management practices remains relatively low and inefficient.