The main objective of the paper was to examine the costs, returns and efficiency levels obtained by key players in the Ghanaian yam marketing chain.A total of 320 players/actors (farmers, wholesalers, retailers and cross-border traders) in the Ghanaian yam industry were selected from four...

The traditional system of producing small ruminants (sheep and goats) contributes significantly to the socioeconomic wellbeing of farm households in northern Ghana. Besides serving as an important source of income, sheep and goats also offer important non-pecuniary benefits such as the provision...

Over the years, the traditional seed system has failed to deliver quality seed yam for propagation. This is due to the high incidence and severity of the yam mosaic virus leading to yield losses of 52.6%-65.4%. The Positive Selection (PS) technique has shown promise as a possible mitigation...