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To What Extent Does the Adoption of Modern Variety Increase Productivity and Income? A Case Study of the Rice Sector in Tanzania

Listed author(s):
  • Nakano, Yuko
  • Kajisa, Kei

Although high-yielding modern rice varieties (MVs) have been gradually disseminating over Sub-Saharan Africa, little is known about how their adoption influences agriculture productivity and household income. To fill this research gap, we analyzed two kinds of data sets in Tanzania: a national representative cross-sectional data and a two-year panel data of irrigated farmers in one district. The most important finding is a strong complementary relationship between MVs and water control; high yield is achieved when MVs are grown with improved bunds in paddy fields of irrigated areas. We also find that the use of chemical fertilizer and the practice of transplanting in rows increase yield and income of both the adopters and nonadopters of MVs in the irrigated areas. In rain-fed areas, we observe a limited impact of MVs. These findings suggest that introducing MVs as a package of technologies with agronomic practices is effective to fully achieve their potential. In the long run, development of irrigation would be important to realize a rice Green Revolution in Sub-Saharan Africa.

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File URL: http://hdl.handle.net/10685/133
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File URL: https://jicari.repo.nii.ac.jp/?action=repository_uri&item_id=680&file_id=9&file_no=1
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Paper provided by JICA Research Institute in its series Working Papers with number 71.

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Date of creation: 20 Mar 2014
Handle: RePEc:jic:wpaper:71
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  1. Adekambi, Souleimane Adeyemi & Diagne, Aliou & Simtowe, Franklin & Biaou, Gauthier, 2009. "The Impact of Agricultural Technology Adoption on Poverty: The case of NERICA rice varieties in Benin," 2009 Conference, August 16-22, 2009, Beijing, China 51645, International Association of Agricultural Economists.
  2. Yoko Kijima & Keijiro Otsuka & Dick Sserunkuuma, 2008. "Assessing the impact of NERICA on income and poverty in central and western Uganda," Agricultural Economics, International Association of Agricultural Economists, vol. 38(3), pages 327-337, 05.
  3. Takeshi SAKURAI, 2006. "Intensification Of Rainfed Lowland Rice Production In West Africa: Present Status And Potential Green Revolution," The Developing Economies, Institute of Developing Economies, vol. 44(2), pages 232-251.
  4. Kijima, Yoko & Otsuka, Keijiro & Sserunkuuma, Dick, 2011. "An Inquiry into Constraints on a Green Revolution in Sub-Saharan Africa: The Case of NERICA Rice in Uganda," World Development, Elsevier, vol. 39(1), pages 77-86, January.
  5. Kijima, Yoko & Ito, Yukinori & Otsuka, Keijiro, 2012. "Assessing the Impact of Training on Lowland Rice Productivity in an African Setting: Evidence from Uganda," World Development, Elsevier, vol. 40(8), pages 1610-1618.
  6. Raes, D. & Kafiriti, E.M. & Wellens, J. & Deckers, J. & Maertens, A. & Mugogo, S. & Dondeyne, S. & Descheemaeker, K., 2007. "Can soil bunds increase the production of rain-fed lowland rice in south eastern Tanzania?," Agricultural Water Management, Elsevier, vol. 89(3), pages 229-235, May.
  7. Nakano, Yuko & Kajisa, Kei, 2011. "The impact of Access to Credit and Training on Technological Adoption: A Case of the Rice Sector in Tanzania," 2011 Annual Meeting, July 24-26, 2011, Pittsburgh, Pennsylvania 103763, Agricultural and Applied Economics Association.
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