Abstract
Observing clear upward trend in rice yield in SSA, this volume attempted to explore whether Green Revolution in rice has taken place in irrigated areas in sub-Saharan Africa (SSA), whether it is possible to realize a rice Green Revolution in rainfed areas, and the extent to which technology and management training has been effective in dissemination of Green Revolution technology. We then looked for signs of significant changes in maize yield from farmers’ fields, particularly from highly populated highlands of Kenya. To our surprise, many maize farmers in Kenya adopt land-saving and labor-intensive maize-livestock mixed systems, consistent with the Boserupian theory of agricultural intensification . But institutional innovations from the public sector, such as the support for agricultural research on the establishment of new maize-based farming system s and extension, have not taken place, thereby limiting major gains in maize yields in many areas of SSA.
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Notes
- 1.
Since JICA training area was not chosen randomly, the reported higher yield cannot be solely attributed to the impact of the training program.
- 2.
- 3.
Climate is fine and dry in this valley, which facilitates photo-synthesis and prevents outbreak of pests. Since it is basin of Senegal River, water is abundant and soil is fertile.
- 4.
Basmti is high-quality and relatively low-yielding varieties. In some areas of Mwea irrigation scheme where IRRI-type modern varieties are grown, yields are as high as 8 tons per hectare.
- 5.
Kilombero is rainfed and flood-prone area due to runoff water from nearby mountain range, and the soil is very fertile.
- 6.
Note that cheap credit was provided to participants in the training program in Ghana initially as well as in Kilombero Valley at present.
- 7.
Although evidence is weak, rice farmers in Asia seem to have known the importance of bunding and leveling of paddy fields even before the Green Revolution . Straight-row transplanting, however, was disseminated with the introduction of MVs in the 1970s.
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Otsuka, K., Larson, D.F. (2016). Conclusions: Strategies Towards a Green Revolution in Sub-Saharan Africa. In: Otsuka, K., Larson, D. (eds) In Pursuit of an African Green Revolution. Natural Resource Management and Policy, vol 48. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55693-0_9
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