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Model-Based Yield Gap Assessment in Nepal’s Diverse Agricultural Landscape

Author

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  • Amit Kumar Basukala

    (Research Unit Sustainability and Climate Risks, Center for Earth System Research and Sustainability, Universität Hamburg, Grindelberg 5, 20144 Hamburg, Germany)

  • Livia Rasche

    (Research Unit Sustainability and Climate Risks, Center for Earth System Research and Sustainability, Universität Hamburg, Grindelberg 5, 20144 Hamburg, Germany)

Abstract

Rice, wheat, maize, millet, and barley are the five major staple cereal crops in Nepal. However, their yields are low, and imports are needed to meet domestic demand. In this study, we quantify the gap between current and potentially attainable yields in Nepal, estimate how much additional fertilizer and irrigation are required to close the gap, and assess if self-sufficiency can thus be achieved. For this, we first test the ability of the crop model EPIC to reproduce reported yields in 1999–2014 accurately. On average, simulated and reported yields at the national level were in the same range, but at the district level, the error was large, as the resolutions of the available climate and soil input data were not high enough to depict the heterogenic conditions in Nepal adequately. In the main study, we show that average yield gaps in Nepal amount to 3.0 t/ha (wheat), 2.7 t/ha (rice), 2.9 t/ha (maize), 0.4 t/ha (barley), and 0.5 t/ha (millet). With additional irrigation and fertilization, yields can be increased by 0.1/2.3 t/ha (wheat), 0.4/1.3 t/ha (rice), 1.6/1.9 t/ha (maize), 0.1/0.3 t/ha (barley), and 0.1/0.4 t/ha (millet), respectively. The results show that providing reliable and affordable access to fertilizer should be a priority for closing yield gaps in Nepal.

Suggested Citation

  • Amit Kumar Basukala & Livia Rasche, 2022. "Model-Based Yield Gap Assessment in Nepal’s Diverse Agricultural Landscape," Land, MDPI, vol. 11(8), pages 1-25, August.
  • Handle: RePEc:gam:jlands:v:11:y:2022:i:8:p:1355-:d:892952
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    References listed on IDEAS

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    1. Cortner, O. & Garrett, R.D. & Valentim, J.F. & Ferreira, J. & Niles, M.T. & Reis, J. & Gil, J., 2019. "Perceptions of integrated crop-livestock systems for sustainable intensification in the Brazilian Amazon," Land Use Policy, Elsevier, vol. 82(C), pages 841-853.
    2. Kenneth G. Cassman & Patricio Grassini, 2020. "A global perspective on sustainable intensification research," Nature Sustainability, Nature, vol. 3(4), pages 262-268, April.
    3. Hugo Henrique Cardoso de Salis & Adriana Monteiro da Costa & João Herbert Moreira Vianna & Marysol Azeneth Schuler & Annika Künne & Luís Filipe Sanches Fernandes & Fernando António Leal Pacheco, 2019. "Hydrologic Modeling for Sustainable Water Resources Management in Urbanized Karst Areas," IJERPH, MDPI, vol. 16(14), pages 1-19, July.
    4. Jones, Peter G. & Thornton, Philip K., 2015. "Representative soil profiles for the Harmonized World Soil Database at different spatial resolutions for agricultural modelling applications," Agricultural Systems, Elsevier, vol. 139(C), pages 93-99.
    5. Bouraoui, Fayçal & Grizzetti, Bruna, 2008. "An integrated modelling framework to estimate the fate of nutrients: Application to the Loire (France)," Ecological Modelling, Elsevier, vol. 212(3), pages 450-459.
    6. Abid Hussain & Golam Rasul & Bidhubhusan Mahapatra & Shahriar Wahid & Sabarnee Tuladhar, 2018. "Climate change-induced hazards and local adaptations in agriculture: a study from Koshi River Basin, Nepal," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 91(3), pages 1365-1383, April.
    7. Nathaniel D. Mueller & James S. Gerber & Matt Johnston & Deepak K. Ray & Navin Ramankutty & Jonathan A. Foley, 2012. "Closing yield gaps through nutrient and water management," Nature, Nature, vol. 490(7419), pages 254-257, October.
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