MACROECONOMIC AND CLIMATIC DETERMINANTS OF GINGER PRODUCTIVITY IN NIGERIA (1961 – 2016)

Çalışma, 1961-2016 yılları arasında Nijerya'daki zencefil üretkenliğinin makroekonomik ve iklimsel belirleyicilerini analiz etmektedir. Zencefil verimliliğini tahmin etmek için Malmquist verimlilik endeksi kullanılmış iken, zencefil üretkenliğinin uzun dönem ve kısa vadeli belirleyicilerini hesaplamak için ise   Otoregresif Dağıtık Gecikme Modeli kullanılmıştır. Sonuçlar zencefil üretkenliğinin incelenen sürede marjinal bir artış yaşadığını ortaya koymaktadır. Sıcaklık ve yağış, iklim değişikliğinin güçlü etkisini gösteren zencefil üretiminde uzun vadede sırasıyla olumsuz ve olumlu bir etki yaratmıştır. Bu nedenle, Nijerya'da zencefil üretiminin artması için sermaye sağlanması, sulama tesislerinin bulunması yoluyla iklim değişikliğinin etkisinin yönetilmesi için çaba gösterilmesi gerekmektedir.

MACROECONOMIC AND CLIMATIC DETERMINANTS OF GINGER PRODUCTIVITY IN NIGERIA (1961 – 2016)

The study analyzed the macroeconomic and climatic determinants of ginger productivity in Nigeria from 1961 – 2016. The Malmquist productivity index was used to estimate the productivity of ginger while Auto Regressive Distributed Lag Model was used to estimate the long-run and short-run determinants of ginger productivity. The results reveal that the productivity of ginger has been experiencing a marginal increase over the period studied. Temperature and rainfall had a long run negative and positive impact respectively on ginger production showing the strong influence of climate change. Capital had both positive and negative impacts on the productivity of ginger in the long run and short run. It is therefore recommended that the availability and accessibility of capital are very essential for the increased production of ginger in Nigeria and there should be efforts to manage the impact of climate change through the availability of irrigation facilities.

___

  • Ajetombi, J. and Abiodun, A. (2010). Climate Change Impacts on Cowpea Productivity in Nigeria. African Journal of Food, Agriculture, Nutrition and Development, 10(1): 2258-2271.
  • Ayodele T. J. & Sambo B. E. (2014) Ginger (Zingiber officinale Roscoe) Production Efficiency and Constraints Among Small-Scale Farmers in Southern Kaduna, Nigeria. Journal of Agricultural Science; Vol. 6, No. 8; 2014 pg. 141 - 148.
  • Beintema, N., Gert-Jan, S., Keith, F., & Paul, H., (2012), ASTI Global Assessment of Agricultural R&D Spending: Developing Countries Accelerate Investment, IFPRI, October 2012.
  • Boomie O (1998). Motherland Nigeria: Geography. http://www.motherland nigeria.com/geography.html.
  • Cleaver, K & Schreiber, G. (1994). Reversing the Spiral: The Population, Agriculture and Environment Nexus in sub-Saharan Africa, Washington: World Bank.
  • Duasa J. (2006). Determinants of Malaysian Trade Balance: An ARDL Bound Testing Approach. 6th Global Conference on Business & Economics. OCTOBER 15-17, 2006.
  • Ezeagu W (2006). Ginger export. A paper presented a3-day National Workshop on massive cassava and ginger production and processing for local industries and export; held at Fati Muasu Hall, National centre for women development, Abuja.
  • Färe, R., Grosskopf, S., and Lovell, C. A. K. (1994) Production Frontiers, Cambridge University Press, Cambridge.
  • Fare, R., S. Grosskopf, B. Lindgren, and P. Roos (1992), Productivity changes in Swedish pharmacies 1980—1989: A non-parametric approach, Journal of Productivity Analysis 3, 85—101.
  • Federal Office of Statistics (1989).Yearly Economic Review, December.
  • Folorunso S. T. & Adenuga K. M. (2013) An analysis of technical efficiency of ginger crop production in Jaba local government area, Kaduna State, Nigeria. Advances in Applied Science Research, 2013, 4(5):85-90.
  • Food and Agricultural Organization(FAO) (2016). GIEWS - Global Information and Early Warning System. Accessed November, 2016. http://www.fao.org/giews/countrybrief/country.jsp?code=NGA Food and Agriculture Organization: Production Yearbook, Rome, Italy: FAO.
  • Food and Agriculture Organization (FAO) (2017) A Global Effort to Strengthen Food and Nutrition Security Evidence-based Analysis and Decision Making: Global Report 2017 On Food Crises. Food Security Information Network (FSIN).
  • Hallam, D. & Willebois, I. (2013), Forward: West African Food Systems: An Overview of trends and indicators of demand, supply and trade. Rebuilding West Africa’s Food Potential: Policies and market incentives for small holder-inclusive food value chains. The Food and Agricultural Organization of the United Nations and international Fund for Agricultural Development. Rome.
  • NdaNmadu, J.& Marcus, P. L (2011). Efficiency of Ginger Production in Selected Local Government Areas of Kaduna State, Nigeria. International Journal of Food and Agricultural Economics ISSN 2147-8988 Vol. 1 No. 2 pp. 39-52.
  • Obinatu, N.I.D (2003) The Marketing of Ginger in Kaduna State, Nigeria. An M.Sc Thesis Submitted to the Department of Agricultural Economics University of Nigeria, Nsukka. http://www.unn.edu.ng/publications/files/The%20Marketing%20of%20Ginger%20in%20Kaduna%20State-Nigeria.pdf accessed 25/04/2017.
  • Omeni B. (2014). Steps to Take in Ginger Cultivation. AgroNigeria. https://agronigeria.com.ng/steps-to-take-in-ginger-plantation/.
  • Omobuwajo, O. A (2015) Terrorism and Insurgency in Northern Nigeria: A Study of the Origins and Nature of Boko Haram. Research on Humanities and Social Sciences www.iiste.org ISSN (Paper)2224-5766 ISSN (Online)2225-0484 (Online) Vol.5, No.12, 2015 pg. 6-15 .
  • Pesaran, H.M. (1997), “The Role of Economic Theory in Modelling the Long-run”, Economic Journal, Vol 107, 178-191.
  • Pesaran, H.M. and Shin, Y. (1995), “Autoregressive Distributed Lag Modelling Approach to Cointegration Analysis”, DAE Working Paper Series No. 9514, Department of Applied Economics, University of Cambridge.
  • Pesaran, H.M. and Shin, Y. (1999), Autoregressive Distributed Lag Modelling Approach to Cointegration Analysis, Chapter 11, in Storm, S., (ed.), Econometrics and Economic Theory in the 20th. Century: The Ragnar Frisch Centennial Symposium, Cambridge University Press, Cambridge.
  • Pesaran, H.M., and Pesaran, B. (1997), Microfit 4.0, Oxford University Press, England.
  • Pesaran, H.M., Shin, Y. and Smith, R. (1996), “Testing the Existence of A Long-run Relationship”, DAE Working Paper Series No. 9622, Department of Applied Economics, University of Cambridge.
  • Pesaran, H.M., Shin, Y. and Smith, R.J. (2001), “Bounds Testing Approaches to the Analysis of Level Relationships”, Journal of Applied Econometrics, Vol. 16, 289-326.
  • Soule, B. G (2013), Analytical Review of National investment Strategies and Agricultural Policies for the Promotion of Staple Food Value Chains in West Africa: West African Food Systems: An Overview of trends and indicators of demand, supply and trade. Rebuilding West Africa’s Food Potential: Policies and market incentives for small holder-inclusive food value chains. The Food and Agricultural Organization of the United Nations and international Fund for Agricultural Development. Rome.