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How does the Adoption of Modern Variety increase Productivity and Income? : A Case of the Rice Sector in Tanzania

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  • Nakano, Yuko
  • Kajisa, Kei

Abstract

Although high yielding modern rice varieties (MVs) have been gradually disseminating over Sub-Saharan Africa, little is known on how the adoption of MVs influences agriculture productivity and household income. To fill this research gap, we analyze two kinds of data sets in Tanzania: a national representative cross section data and a two-year panel data of irrigated farmers in one district. The most important finding is strong complementary relationship between MVs and water control; high yield is achieved when MVs are grown with improved bund in paddy fields in irrigated area. 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 non-adopters of MVs in the irrigated area. In rain-fed area, we observe limited impact of MVs. These findings suggest that introducing MVs as a package of technologies including other agronomic practices is effective in order 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.

Suggested Citation

  • Nakano, Yuko & Kajisa, Kei, 2012. "How does the Adoption of Modern Variety increase Productivity and Income? : A Case of the Rice Sector in Tanzania," 2012 Annual Meeting, August 12-14, 2012, Seattle, Washington 124924, Agricultural and Applied Economics Association.
  • Handle: RePEc:ags:aaea12:124924
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    1. 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, May.
    2. 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.
    3. 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.
    4. 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.
    5. 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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    Cited by:

    1. Jose M. Yorobe Jr. & Jauhar Ali & Valerien O. Pede & Roderick M. Rejesus & Orlee. P. Velarde & Huaiyu Wang, 2016. "Yield and income effects of rice varieties with tolerance of multiple abiotic stresses: the case of green super rice (GSR) and flooding in the Philippines," Agricultural Economics, International Association of Agricultural Economists, vol. 47(3), pages 261-271, May.
    2. Yorobe, Jose Jr & Pede, Valerien & Rejesus, Roderick & Velarde, Orlee & Wang, Huaiyu & Ali, Jauhar, 2014. "Yield and Income Effects of the Green Super Rice (GSR) Varieties: Evidence from a Fixed-Effects Model in the Philippines," 2014 Annual Meeting, July 27-29, 2014, Minneapolis, Minnesota 169635, Agricultural and Applied Economics Association.
    3. Millicent deGraft-Johnson & Aya Suzuki & Takeshi Sakurai & Keijiro Otsuka, 2014. "On the transferability of the Asian rice green revolution to rainfed areas in sub-Saharan Africa: an assessment of technology intervention in Northern Ghana," Agricultural Economics, International Association of Agricultural Economists, vol. 45(5), pages 555-570, September.
    4. Nakano, Yuko & Kajisa, Kei, 2013. "The Determinants of Technology Adoption:The Case of the Rice Sector in Tanzania," Working Papers 58, JICA Research Institute.
    5. Joseph Kangile, Rajabu, 2015. "Efficiency in Production By Smallholder Rice Farmers Under Cooperative Irrigation Schemes in Pwani and Morogoro Regions, Tanzania," Research Theses 243447, Collaborative Masters Program in Agricultural and Applied Economics.

    More about this item

    Keywords

    Technology Adoption; Green Revolution; Sub-Saharan Africa; Crop Production/Industries; International Development; Productivity Analysis; O12; O13; Q16; Q18;

    JEL classification:

    • O12 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Microeconomic Analyses of Economic Development
    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products
    • Q16 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - R&D; Agricultural Technology; Biofuels; Agricultural Extension Services
    • Q18 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agricultural Policy; Food Policy

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