IDEAS home Printed from https://ideas.repec.org/p/pra/mprapa/35379.html
   My bibliography  Save this paper

Effect of climate variables on yield of major food-crops in Nepal -A time-series analysis-

Author

Listed:
  • Joshi, Niraj Prakash
  • Maharjan, Keshav Lall
  • Piya, Luni

Abstract

Climate change influences crop yield vis-à-vis crop production to a greater extent in countries like Nepal where agriculture depends largely on natural circumstances. Plausible scenarios of climate change like higher temperatures and changes in precipitation will directly affect crop yields. Therefore, this study assesses the effect of observed climate variables on yield of major food-crops in Nepal, namely rice, wheat, maize, millet, barley and potato based on regression model for historical (1978-2008) climatic data and yield data for the food-crops. The yield growth rate of all the food-crops is positive. However, the growth rate for all crops, except potato and wheat, is below population growth rate during the period. Climate variables like temperature and precipitation are the important determinants of crop yields. Trend of precipitation is neither increasing nor decreasing significantly during this period. However, temperature is increasing by 0.7 0C during the period. Climate variables show some influences on the yield of these major food-crops in Nepal. Increase in summer rain and maximum temperature has contributed positively to rice yield. Also, increase in summer rain and minimum temperature has positive impact on potato yield. However, increase in summer rain and maximum temperature adversely affected the yield of maize and millet. Increase in wheat and barley yield is contributed by current trend of winter rain and temperature. Consideration of spatial variation in similar type of study in Nepal that will be helpful in identifying the region more vulnerable to climate change in terms of crop yield is highly recommended.

Suggested Citation

  • Joshi, Niraj Prakash & Maharjan, Keshav Lall & Piya, Luni, 2011. "Effect of climate variables on yield of major food-crops in Nepal -A time-series analysis-," MPRA Paper 35379, University Library of Munich, Germany.
  • Handle: RePEc:pra:mprapa:35379
    as

    Download full text from publisher

    File URL: https://mpra.ub.uni-muenchen.de/35379/1/MPRA_paper_35379.pdf
    File Function: original version
    Download Restriction: no

    References listed on IDEAS

    as
    1. You, Liangzhi & Rosegrant, Mark W. & Fang, Cheng & Wood, Stanley, 2005. "Impact of global warming on Chinese wheat productivity:," EPTD discussion papers 143, International Food Policy Research Institute (IFPRI).
    2. Kim, Man-Keun & Pang, Arwin, 2009. "Climate Change Impact on Rice Yield and Production Risk," Journal of Rural Development/Nongchon-Gyeongje, Korea Rural Economic Institute, vol. 32(2), June.
    3. Carew, Richard & Smith, Elwin G. & Grant, Cynthia, 2009. "Factors Influencing Wheat Yield and Variability: Evidence from Manitoba, Canada," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 41(03), December.
    4. Murat Isik & Stephen Devadoss, 2006. "An analysis of the impact of climate change on crop yields and yield variability," Applied Economics, Taylor & Francis Journals, vol. 38(7), pages 835-844.
    5. Mendelsohn, Robert & Nordhaus, William D & Shaw, Daigee, 1994. "The Impact of Global Warming on Agriculture: A Ricardian Analysis," American Economic Review, American Economic Association, vol. 84(4), pages 753-771, September.
    6. Carew, Richard & Smith, Elwin G. & Grant, Cynthia, 2009. "Factors Influencing Wheat Yield and Variability: Evidence from Manitoba, Canada," Journal of Agricultural and Applied Economics, Cambridge University Press, vol. 41(03), pages 625-639, December.
    7. Beach, Robert H. & Thomson, Allison M. & McCarl, Bruce A., 2010. "Climate Change Impacts On Us Agriculture," Proceedings Issues, 2010: Climate Change in World Agriculture: Mitigation, Adaptation, Trade and Food Security, June 2010, Stuttgart- Hohenheim, Germany 91393, International Agricultural Trade Research Consortium.
    8. Wolfram Schlenker & Michael J. Roberts, 2008. "Estimating the Impact of Climate Change on Crop Yields: The Importance of Nonlinear Temperature Effects," NBER Working Papers 13799, National Bureau of Economic Research, Inc.
    9. Joshi, Niraj Prakash & Maharjan, Keshav Lall & Piya, Luni, 2010. "Poverty and Food Insecurity in Nepal A Review," MPRA Paper 35387, University Library of Munich, Germany.
    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. Mulmi, Prajula & Block, Steven A. & Shively, Gerald E. & Masters, William A., 2016. "Climatic conditions and child height: Sex-specific vulnerability and the protective effects of sanitation and food markets in Nepal," Economics & Human Biology, Elsevier, vol. 23(C), pages 63-75.
    2. Chalise, Sudarshan & Naranpanawa, Athula & Bandara, Jayatilleke S. & Sarker, Tapan, 2017. "A general equilibrium assessment of climate change–induced loss of agricultural productivity in Nepal," Economic Modelling, Elsevier, vol. 62(C), pages 43-50.
    3. Kima, Aimé Sévérin & Traore, Seydou & Wang, Yu-Min & Chung, Wen-Guey, 2014. "Multi-genes programing and local scale regression for analyzing rice yield response to climate factors using observed and downscaled data in Sahel," Agricultural Water Management, Elsevier, vol. 146(C), pages 149-162.
    4. Sudarshan Chalise & Dr Athula Naranpanawa, 2016. "Climate change adaptation in agriculture: A general equilibrium analysis of land re-allocation in Nepal," EcoMod2016 9272, EcoMod.
    5. Sarker, Md. Abdur Rashid & Alam, Khorshed & Gow, Jeff, 2012. "Exploring the relationship between climate change and rice yield in Bangladesh: An analysis of time series data," Agricultural Systems, Elsevier, vol. 112(C), pages 11-16.
    6. repec:eee:ecoser:v:13:y:2015:i:c:p:70-80 is not listed on IDEAS
    7. Santosh Poudel & Koji Kotani, 2013. "Climatic impacts on crop yield and its variability in Nepal: do they vary across seasons and altitudes?," Climatic Change, Springer, vol. 116(2), pages 327-355, January.

    More about this item

    Keywords

    Climate variables; temperature; rainfall; food-crops; Nepal;

    JEL classification:

    • Q19 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Other

    NEP fields

    This paper has been announced in the following NEP Reports:

    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:pra:mprapa:35379. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Joachim Winter). General contact details of provider: http://edirc.repec.org/data/vfmunde.html .

    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 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.

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

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.