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Impact of climate change on the yield of tropical root and tuber crops vs. rice and potato in India

Author

Listed:
  • Raji Pushpalatha

    (ICAR – Central Tuber Crops Research Institute)

  • VS Santhosh Mithra

    (ICAR – Central Tuber Crops Research Institute)

  • S Sunitha

    (ICAR – Central Tuber Crops Research Institute)

  • James Goerge

    (ICAR – Central Tuber Crops Research Institute)

  • M Nedunchezhiyan

    (ICAR – Central Tuber Crops Research Institute)

  • K Mamatha

    (Dr. YSR Horticultural University)

  • P Ashok

    (Dr. YSR Horticultural University)

  • Sheriful Alam

    (Assam Agricultural University)

  • BK Saud

    (Assam Agricultural University)

  • J Tarafdar

    (Bidhan Chandra Krishi Viswavidyalaya)

  • Surajit Mitra

    (Bidhan Chandra Krishi Viswavidyalaya)

  • Chandra Deo

    (College of Horticulture and Forestry)

  • M Velmurugan

    (Tropica and Castor Research Station)

  • G Suja

    (ICAR – Central Tuber Crops Research Institute)

  • V Ravi

    (ICAR – Central Tuber Crops Research Institute)

  • Byju Gangadharan

    (ICAR – Central Tuber Crops Research Institute)

Abstract

The current study focused on the impact of climate change on tropical root and tuber crops of India over some of the major growing areas using the crop model, WOFOST. As part of this study, the impact of climate change on the yield of rice and potato is also carried out using the same crop model to understand the advantages of root and tuber crops over the yield variations of rice and potato. The LARS weather generator is used to derive future climate for 2030, 2050, and 2070 for the two representative concentration pathways (RCPs)-4.5 and 8.5. The future climate projections in the study locations indicate an increment in minimum and maximum temperatures up to a value of 3.4 and 3.8 ºC respectively. The rainfall also indicates a drastic fluctuation from -721 to 448 mm in the future. The results reveal that the predicted crop yield varies from one location to another depending on the future climate. Cassava (-13 to 12%, -17 to 8%), sweet potato (-32 to 14%, -38 to 13%), greater yam (-11 to 8, -14 to 6), elephant foot yam (-10 to 6, -12 to 4), and taro (-16 to 19, -28 to 18) can be considered as future crops based on their predicted yield variations and economics compared to that of rice (-26 to 15%, -50 to 18%) and potato (-37 to 7%, -59 to 8.5%) for both the RCPs. Among other crops, sweet potato has the same crop duration as rice and potato and can be recommended to increase food access. These crops can be recommended for enhancing the availability of food based on their superiority in dry matter production.

Suggested Citation

  • Raji Pushpalatha & VS Santhosh Mithra & S Sunitha & James Goerge & M Nedunchezhiyan & K Mamatha & P Ashok & Sheriful Alam & BK Saud & J Tarafdar & Surajit Mitra & Chandra Deo & M Velmurugan & G Suja &, 2022. "Impact of climate change on the yield of tropical root and tuber crops vs. rice and potato in India," Food Security: The Science, Sociology and Economics of Food Production and Access to Food, Springer;The International Society for Plant Pathology, vol. 14(2), pages 495-508, April.
    • Handle: RePEc:spr:ssefpa:v:14:y:2022:i:2:d:10.1007_s12571-021-01226-z
    DOI: 10.1007/s12571-021-01226-z
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    References listed on IDEAS

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    1. Siwabhorn Pipitpukdee & Witsanu Attavanich & Somskaow Bejranonda, 2020. "Impact of Climate Change on Land Use, Yield and Production of Cassava in Thailand," Agriculture, MDPI, vol. 10(9), pages 1-14, September.
    2. Cynthia W. Angba & Richard N. Baines & Allan J. Butler, 2020. "Examining Yam Production in Response to Climate Change in Nigeria: A Co-Integration Model Approach," Social Sciences, MDPI, vol. 9(4), pages 1-15, April.
    3. Bradbury, J. Howard & Holloway, Warren D., 1988. "Chemistry of Tropical Root Crops: Significance for Nutrition and Agriculture in the Pacific," Monographs, Australian Centre for International Agricultural Research, number 118050.
    4. Akinola, A.A. & Oke, J.T.O. & Adesiyan, A.T. & Famuyini, C.A., 2019. "Climate Change and Economic Efficiency of Yam Farmers in Ekiti State, Nigeria," 2019 Sixth International Conference, September 23-26, 2019, Abuja, Nigeria 295835, African Association of Agricultural Economists (AAAE).
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