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By Tomas S. Walker, Jeffrey R. Alwang

Following on from the CGIAR examine via Evenson and Gollin (published by way of CABI in 2003), this quantity offers updated estimates of adoption results and productiveness affects of crop sort development study in sub-Saharan Africa. The booklet stories at the result of the DIIVA undertaking that focussed at the varietal iteration, adoption and effect for 20 nutrition plants in 30 nations. It additionally compares adoption results in sub-Saharan Africa to these in South Asia, and courses destiny efforts for international agricultural learn

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19 Estimates show about 49 cassava breeders working in NARS, universities and the private sector in 1998. 6 FTEs per million tonnes of production). Although research intensities for 16 J. 0 scientist per million tonnes of production. Of the less important (on an SSA-wide scale) foods, rice research in West Africa has been limited by relatively small numbers of scientists in the NARS (fewer than 46 FTEs by 1998). In spite of this limited capacity, more than 319 improved varieties had been released by 2003 with more than 40% of them having some contribution from CG germplasm or parents.

The ultimate determinant of the supply of modern varieties is investment in agricultural R&D, particularly investments in crop improvement research. Several studies have examined expenditures and scientist FTEs involved in agricultural R&D in SSA. 1, are Pardey et al. (1997), Evenson and Gollin (2003), Maredia and Raitzer (2006), Beintema and Stads (2011), and Fuglie and Rada (2013). Primary data sources include the ASTI indicators for NARS research expenditures and various incarnations of these data, CGIAR Center-based records, which account for CG investments, and ad-hoc surveys of IARC and NARS scientists and research administrators.

Its effectiveness is compromised for multiple reasons. Agroecological conditions are extremely heterogeneous in many African countries, especially compared to those in South Asia where widespread diffusion of modern varieties sparked the Green Revolution, which contributed to remarkable productivity growth and poverty reduction beginning in the mid-1960s. Limited infrastructure and weak support systems in sub-Saharan Africa have constrained the uptake of improved varieties. Lack of funding for operating budgets is an important limitation that is shared by both NARS and IARCs.

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