IDEAS home Printed from https://ideas.repec.org/a/eee/agecon/v14y1996i3p159-173.html
   My bibliography  Save this article

Econometric estimation of a global spillover matrix for wheat varietal technology

Author

Listed:
  • Maredia, Mywish K.
  • Ward, Richard
  • Byerlee, Derek

Abstract

An econometric approach using international and national yield trial data is employed to estimate a spillover matrix for wheat varietal technology. The global spillover matrix is estimated based on international yield trial data from 1979–80 to 1987–88, that include 195 international trial locations and 209 wheat varieties. The locations were classified across countries using the CIMMYT's wheat megaenvironment system and varieties were classified by both their environmental and institutional origin. The model gave good explanatory power and confirmed the location specificity hypothesis, at least, for the varieties developed by national programs (NARS). The spillover matrix shows that NARS varieties developed in the home' environment generally perform better on average than varieties developed in other megaenvironments. Also, the matrix is not symmetric. CIMMYT varieties perform better on average in irrigated and high rainfall environments than NARS varieties developed for these environments. The yield advantage of CIMMYT varieties in many test megaenvironments indicates the potential of CIMMYT varieties to spill‐over to these test megaenvironments. Results also indicate that national programs are efficient in selecting from among imported technologies. Analysis of international data is complemented by the analysis of country‐level data for Pakistan and Kenya that confirms the above results. The country‐level analysis, however, indicates that CIMMYT germplasm does not do so well in some sub‐environments, such as the irrigated short‐duration environment. The results of the spillover matrix have implications for the design of crop breeding programs both at the national and international levels. Information provided by the spillover matrix can be utilized by national programs to deploy their resources more efficiently by following a mixed strategy of direct importation of technology in some environments and local development of technologies in other environments which a
(This abstract was borrowed from another version of this item.)

Suggested Citation

  • Maredia, Mywish K. & Ward, Richard & Byerlee, Derek, 1996. "Econometric estimation of a global spillover matrix for wheat varietal technology," Agricultural Economics, Blackwell, vol. 14(3), pages 159-173, August.
    • Handle: RePEc:eee:agecon:v:14:y:1996:i:3:p:159-173
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/0169-5150(96)01188-7
    Download Restriction: Full text for ScienceDirect subscribers only
    ---><---

    As the access to this document is restricted, you may want to look for a different version below or search for a different version of it.

    Other versions of this item:

    References listed on IDEAS

    as
    1. Davis, Jeffrey S. & Oram, Peter A. & Ryan, James G., 1987. "Assessment of Agricultural Research Priorities: An International Perspective," Monographs, Australian Centre for International Agricultural Research, number 118048.
    2. White, Fred C. & Havlicek, Joseph, Jr., 1981. "Interregional Spillover of Agricultural Research Results and Intergovernmental Finance: Some Preliminary Results," Evaluation of Agricultural Research, Proceedings of a Workshop, Minneapolis, MN, May 12-13, 1980, Miscellaneous Publication 8 49019, University of Minnesota, Agricultural Experiment Station.
    3. Byerlee, Derek & Ramzan Akhtar, M. & Hobbs, Peter R., 1987. "Reconciling conflicts in sequential cropping patterns through plant breeding: The example of cotton and wheat in Pakistan's Punjab," Agricultural Systems, Elsevier, vol. 24(4), pages 291-304.
    4. Robert E. Evenson, 1989. "Spillover Benefits of Agricultural Research: Evidence from U.S. Experience," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 71(2), pages 447-452.
    5. Brennan, John P., 1989. "Spillover effects of international agricultural research: CIMMYT-based semi-dwarf wheats in Australia," Agricultural Economics, Blackwell, vol. 3(4), pages 323-332, December.
    6. John P. Brennan, 1989. "Spillover Effects of International Agricultural Research: CIMMYT‐based Semi‐Dwarf Wheats in Australia," Agricultural Economics, International Association of Agricultural Economists, vol. 3(4), pages 323-332, December.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Maredia, Mywish K. & Byerlee, Derek, 2000. "Efficiency of research investments in the presence of international spillovers: wheat research in developing countries," Agricultural Economics, Blackwell, vol. 22(1), pages 1-16, January.
    2. Takeshima, Hiroyuki & Nasir, Abdullahi Mohammed, 2017. "The role of the locations of public sector varietal development activities on agricultural productivity: Evidence from northern Nigeria:," NSSP working papers 42, International Food Policy Research Institute (IFPRI).
    3. Takeshima, Hiroyuki & Maji, Alhassan, 2016. "Varietal development and the effectiveness of seed sector policies: The case of rice in Nigeria:," NSSP working papers 34, International Food Policy Research Institute (IFPRI).
    4. Giancarlo Moschini & Harvey Lapan & Andrei Sobolevsky, 2000. "Roundup ready® soybeans and welfare effects in the soybean complex," Agribusiness, John Wiley & Sons, Ltd., vol. 16(1), pages 33-55.
    5. Traxler, Greg & Byerlee, Derek, 2001. "Linking technical change to research effort: an examination of aggregation and spillovers effects," Agricultural Economics, Blackwell, vol. 24(3), pages 235-246, March.
    6. Nedumaran, S. & Bantilan, M.C.S. & Gupta, S.K. & Irshad, A. & Davis, J.S., 2015. "Potential Welfare Benefit of Millets Improvement Research to Inform Decision Making: Multi country- Economic Surplus model approach," 2015 Conference, August 9-14, 2015, Milan, Italy 230224, International Association of Agricultural Economists.
    7. Michael J. Andrews, 2020. "Local Effects of Land Grant Colleges on Agricultural Innovation and Output," NBER Chapters, in: Economics of Research and Innovation in Agriculture, pages 139-175, National Bureau of Economic Research, Inc.
    8. Moschini, GianCarlo & Lapan, Harvey E. & Sobolevsky, Andrei, 2000. "Trading Technology As Well As Final Products: Roundup Ready Soybeans And Welfare Effects In The Soybean Complex," Transitions in Agbiotech: Economics of Strategy and Policy, June 24-25, 1999, Washington, D.C. 26002, Regional Research Project NE-165 Private Strategies, Public Policies, and Food System Performance.
    9. Pardey, Philip G. & Alston, Julian M. & Ruttan, Vernon W., 2010. "The Economics of Innovation and Technical Change in Agriculture," Handbook of the Economics of Innovation, in: Bronwyn H. Hall & Nathan Rosenberg (ed.), Handbook of the Economics of Innovation, edition 1, volume 2, chapter 0, pages 939-984, Elsevier.
    10. Mausch, Kai & Chiwaula, L. & Irshad, A. & Bantilan, Ma Cynthia S. & Silim, S. & Siambi, M., 2013. "Strategic Breeding Investments for Legume Expansion: Lessons Learned from the Comparison of Groundnut and Pigeonpea," 2013 Conference (57th), February 5-8, 2013, Sydney, Australia 152168, Australian Agricultural and Resource Economics Society.
    11. Pedro Andres Garzon Delvaux & Heinrich Hockmann & Peter Voigt & Pavel Ciaian & Sergio Gomez y Paloma, 2018. "The impact of private R&D on the performance of food-processing firms: Evidence from Europe, Japan and North America," JRC Research Reports JRC104144, Joint Research Centre.
    12. Andersen, Matthew A., 2019. "Knowledge productivity and the returns to agricultural research: a review," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 63(2), April.
    13. Maredia, Mywish K., 1998. "The Economics Of Biosafety: Implications For Biotechnology In Developing Countries," Staff Paper Series 11768, Michigan State University, Department of Agricultural, Food, and Resource Economics.
    14. Hiroyuki Takeshima, 2019. "Geography of plant breeding systems, agroclimatic similarity, and agricultural productivity: evidence from Nigeria," Agricultural Economics, International Association of Agricultural Economists, vol. 50(1), pages 67-78, January.
    15. Alston, Julian M., 2002. "Spillovers," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 46(3), pages 1-32.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Derek Byerlee, 1993. "Technical Change and Returns to Wheat Breeding Research in Pakistan's Punjab in the Post-Green Revolution Period," The Pakistan Development Review, Pakistan Institute of Development Economics, vol. 32(1), pages 69-86.
    2. Liangzhi You & Michael Johnson, 2010. "Exploring strategic priorities for regional agricultural R&D investments in East and Central Africa," Agricultural Economics, International Association of Agricultural Economists, vol. 41(2), pages 177-190, March.
    3. Johnson, Michael E. & Benin, Samuel & You, Liangzhi & Diao, Xinshen & Chilonda, Pius & Kennedy, Adam, 2014. "Exploring strategic priorities for regional agricultural research and development investments in southern Africa:," IFPRI discussion papers 1318, International Food Policy Research Institute (IFPRI).
    4. Brennan, John P. & Bantilan, Ma Cynthia S., 1999. "Impact of ICRISAT Research on Australian Agriculture," Research Reports 28006, New South Wales Department of Primary Industries Research Economists.
    5. Johnson, M., 2014. "Exploring strategic priorities for regional agricultural research and development investments in Southern Africa," IWMI Working Papers H046297, International Water Management Institute.
    6. Philip G. Pardey & Julian M. Alston & Connie Chan-Kang & Eduardo C. Magalhães & Stephen A. Vosti, 2006. "International and Institutional R&D Spillovers: Attribution of Benefits among Sources for Brazil's New Crop Varieties," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 88(1), pages 104-123.
    7. Julian M. Alston & Philip G. Pardey & Xudong Rao, 2022. "Payoffs to a half century of CGIAR research," American Journal of Agricultural Economics, John Wiley & Sons, vol. 104(2), pages 502-529, March.
    8. Pardey, Philip G. & Alston, Julian M. & Chan-Kang, Connie & Magalhães, Eduardo C. & Vosti, Stephen A., 2002. "Assessing and attributing the benefits from varietal improvement research: evidence from Embrapa, Brazil," EPTD discussion papers 95, International Food Policy Research Institute (IFPRI).
    9. Brennan, John P. & Bantilan, M. C. S., 2003. "Price and yield effects of spill-overs in international agricultural research: evidence from ICRISAT and Australia," Agricultural Economics, Blackwell, vol. 28(2), pages 87-97, March.
    10. Brennan, John P., 2007. "Beyond semi-dwarf wheat yield increases: impacts on the Australian wheat industry of on-going spillovers from the International Maize and Wheat Improvement Center," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 51(4), pages 1-17.
    11. Byerlee, Derek & Morris, Michael L., 1991. "Are We Underinvesting in Research for Marginal Environments? The Example of Wheat in Developing Countries," 1991 Annual Meeting, August 4-7, Manhattan, Kansas 271218, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    12. Alston, Julian M., 2002. "Spillovers," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 46(3), pages 1-32.
    13. Michael Harris & Alan Lloyd, 1991. "The Returns to Agricultural Research and the Underinvestment Hypothesis ‐ A Survey," Australian Economic Review, The University of Melbourne, Melbourne Institute of Applied Economic and Social Research, vol. 24(3), pages 16-27, July.
    14. Samal, Parshuram & Mondal, Biswajit & Jambhulkar, Nitiprasad Namdeorao & Verma, Ramlakhan & Das, Anup Kumar & Singh, Onkar Nath, 2023. "Evaluation of crop research institutes under data and resource constraints: An alternative approach," Evaluation and Program Planning, Elsevier, vol. 97(C).
    15. Lence, Sergio H. & Hayes, Dermot J. & Alston, Julian & Smith, J. Stephen C., 2015. "Intellectual Property in Plant Breeding: Comparing Different Levels and Forms of Protection," Staff General Research Papers Archive 38978, Iowa State University, Department of Economics.
    16. Huffman, Wallace E., 1996. "Farm Labor: Key Conceptual and Measurement Issues on the Route to Better Farm Cost and Return Estimates," ISU General Staff Papers 199604010800001279, Iowa State University, Department of Economics.
    17. Byerlee, Derek R., 1993. "Technology Adaptation and Adoption: The Experience of Seed-Fertiliser Technology and Beyond," Review of Marketing and Agricultural Economics, Australian Agricultural and Resource Economics Society, vol. 61(02-2), pages 1-16, August.
    18. Athanasios Petsakos & Guy Hareau & Ulrich Kleinwechter & Keith Wiebe & Timothy B Sulser, 2018. "Comparing modeling approaches for assessing priorities in international agricultural research," Research Evaluation, Oxford University Press, vol. 27(2), pages 145-156.
    19. Varshney, Deepak & Joshi, P. K. & Kumar, A. & Mishra, A. K. & Dubey, S. K., 2022. "Examining the transfer of knowledge and training to smallholders in India: direct and spillover effects of agricultural advisory services in an emerging economy," Papers published in Journals (Open Access), International Water Management Institute, pages 160:106067..
    20. Michael E. Johnson & William A. Masters & Paul V. Preckel, 2006. "Diffusion and spillover of new technology: a heterogeneous‐agent model for cassava in West Africa," Agricultural Economics, International Association of Agricultural Economists, vol. 35(2), pages 119-129, September.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:agecon:v:14:y:1996:i:3:p:159-173. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.blackwell-synergy.com/loi/agec .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.