During the last 3 decades, donors and governments have invested in the development and dissemination of new technologies in the semi-arid tropics of West Africa. Though a wide range of improved technologies has been developed,...

In spite of the fact that the Ugandan National Agricultural Research System has developed and released several production-enhancing technologies over a century, yields of most major crops at the farm level have been low. Given...

This paper presents a historical overview of plant breeding research, variety release and seed supply of staple food grains in Zimbabwe, and assesses the impacts of the new varieties on yields using national aggregate yield...

The maize green revolution, which increased maize yields through the use of improved varieties and fertilizer, has stalled since the mid-eighties in Kenya. This paper examines whether the stagnation of yields continued in the 1990s...

This paper analysed the growth performance of non-rice crop sectors by estimating total factor productivity (TFP) growth for the selected coarse cereals viz., maize, sorghum and pearl millet in India. The analysis indicates that the...

It is widely believed that a Green Revolution similar to the one achieved in Asia is impossible in Sub-Saharan Africa. Although grain yields have been stagnant in this region, there are some signs of the...

While population still continues to grow rapidly in Sub-Sahara Africa, the expansion of cultivation area has slowed down considerably due to the increasing scarcity of uncultivated land. Since the yield of food grain per unit...