Assessment of climate change impact on major crops of the southern agroclimatic zone of Tamil Nadu, India

Authors

  • RAMACHANDRAN A. Centre for Climate Change and Disaster Management Department of Civil Engineering, College of Engineering, CEG Campus Anna University, Chennai
  • PAVITHRAPRIYA S. Centre for Climate Change and Disaster Management Department of Civil Engineering, College of Engineering, CEG Campus Anna University, Chennai https://orcid.org/0000-0001-7933-3606
  • AHAMED IBRAHIM Centre for Climate Change and Disaster Management Department of Civil Engineering, College of Engineering, CEG Campus Anna University, Chennai https://orcid.org/0000-0002-7348-9818
  • PRAVEENKUMAR P. Centre for Climate Change and Disaster Management Department of Civil Engineering, College of Engineering, CEG Campus Anna University, Chennai
  • MATHAN M. Centre for Climate Change and Disaster Management Department of Civil Engineering, College of Engineering, CEG Campus Anna University, Chennai https://orcid.org/0000-0002-2504-9818
  • KURIAN JOSEPH Centre for Climate Change and Disaster Management, Department of Civil Engineering, College of Engineering, CEG Campus, Anna University, Chennai – 600 025, India https://orcid.org/0000-0002-3844-3478

DOI:

https://doi.org/10.54386/jam.v27i2.2905

Keywords:

Climate change, DSSAT, SSP-2 4.5, Rice, Maize, Sorghum, Groundnut, EC Earth3

Abstract

Climate change poses significant risks to crop production, endangering food security and farmer livelihoods. The southern agro-climatic zone of Tamil Nadu is particularly susceptible to droughts and floods. This study assessed the future impacts of climate change on crop yields using the DSSAT crop simulation model, with climate projections based on the EC-Earth statistical downscaled model under the SSP2-4.5 scenario for the baseline period (1985–2014) and near-century projections (2021–2050). Projections indicate a rise in annual mean maximum temperature of 0.4°C and a 7% increase in rainfall. Simulated yields of rice, maize, sorghum, and groundnut are expected to decline by 5.6%, 2.1%, 8.2%, and 7.6%, respectively, due primarily to heat stress during critical reproductive stages and altered rainfall distribution affecting crop water availability. In contrast, black gram yield is projected to increase by 4.8%, benefiting from enhanced CO2 fertilization and improved rainfall during its growing season. The study highlights the significant effects of climate change on agricultural productivity and the urgent need for adaptation strategies, including drought-resistant crop varieties, modified planting calendars, and enhanced water management techniques to build regional agricultural resilience in Tamil Nadu.

References

Ammaiyappan, A., Geeethalakshmi, V., Bhuvaneswari, K., Kalarani, MK., Thavaprakaash, N., Prahadeeswaran, M. (2023). Long-term response of rainfed sorghum to diverse growing environments and optimal sowing window at Coimbatore. J. Agrometeorol., 25 (4): 532-538, https://doi.org/10.54386/jam.v25i4.2362

Balasubramanian, T.N., Jagannathan, R., & Geethalakshmi, V. (2022). Agro-Climatology: Advances and Challenges (1st ed.). CRC Press. https://doi.org/10.1201/9781003261100.

Balu, A., Ramasamy, S. and Sankar, G. (2023). Assessment of climate change impact on hydrological components of Ponnaiyar river basin, Tamil Nadu using CMIP6 models. J. Water Clim. Change, 14(3): 730. https://doi.org/10.2166/wcc.2023.354.

Bhuvaneswari, K., Geethalakshmi, V., Lakshmanan, A., Anbhazhagan, R. and Udayas Sekhar DN (2014). Climate change impact assessment and developing adaptation strategies for crops in the western zone of Tamil Nadu. J. Agrometeorol., 16 (1): 38-43. https://doi.org/10.54386/jam.v16i1.1484

Geethalakshmi, V., Lakshmanan, A. and Rajalakshmi, D. (2011). Climate change impact assessment and adaptation strategies to sustain rice production in the Cauvery basin of Tamil Nadu. Curr. Sci., 101: 342–347.

Guo, Y., Fu, Y., Hao, F., Zhang, X., Wu, W., Jin, X., Bryant, C.R. and Senthilnath, J. (2021). Integrated phenology and climate in rice yields prediction using machine learning methods. Ecol. Indic., 120: 106935. https://doi.org/10.1016/j.ecolind.2020.106935.

IPCC. (2022). Climate Change 2022: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, UK and New York, NY, USA, 3056 pp. https://doi.org/10.1017/9781009325844.

Krishnan, R., Sowmiya, R., Karthikeyan, R., Chandrasekhar, C.N. and Kannan, M. (2019). Impact of climate change on maize yield in Tamil Nadu, India under different emission scenarios. Indian J. Agric. Sci., 89(7): 1131–1138.

Pavithrapriya, S., Ramachandran, A., Ahamed Ibrahim, S.N. and Palanivelu, K. (2023). Assessing the black gram (Vigna mungo) yield due to climate change impacts and its adaptation strategies in the Cauvery delta region of South India. Theor. Appl. Climatol., 153: 1049–1062.

Rahman, M.H., Ahmad, A. and Wang, X. (2018). Multi-model projections of future climate and climate change impact uncertainty assessment for Pakistan's cotton production. Agric. For. Meteorol., 253–254: 94–113. https://doi.org/10.1016/j.agrformet.2018.02.008.

Ramachandran, A., Praveen, D., Jaganathan, R., Rajalakshmi, D., Palanivelu. (2017). Spatiotemporal analysis of projected impacts of climate change on the major C3 and C4 crop yield under representative concentration pathway 4.5: Insight from the coasts of Tamil Nadu, South India. PLoS One, 12. https://doi.org/10.1371/journal.pone.0180706.

Saravanakumar, V., Lohano, H.D. & Balasubramanian, R. A district-level analysis for measuring the effects of climate change on rice production: evidence from Southern India. Theor Appl Climatol 150: 941–953 (2022). https://doi.org/10.1007/s00704-022-04198-y.

TNAGRISTAT. (2021). Tamil Nadu agriculture statistics. Available at: www.tnagrisnet.tn.gov.in.

Ullah, A., Ahmad, I., Ahmad, A., Ashfaq A, Umer S, Habib-ur-Rahman M, Jamshas H, Shafqat U., and Hoogenboom G (2019). Assessing climate change impacts on pearl millet under arid and semi-arid environments using CSM-CERES-Millet model. Environ. Sci. Pollut. Res., 26: 6745–6757. https://doi.org/10.1007/s11356-018-3925-7.

Wang, X., Ma, L., Liu, S. and Zhang, J. (2015). Effects of elevated temperature on the growth and development of rice (Oryza sativa L.) under different nitrogen levels. Field Crops Res., 170: 1–9

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Published

01-06-2025

How to Cite

RAMACHANDRAN A., S., P., S N, A. I., P., P., M., M., & JOSEPH, K. (2025). Assessment of climate change impact on major crops of the southern agroclimatic zone of Tamil Nadu, India. Journal of Agrometeorology, 27(2), 132–138. https://doi.org/10.54386/jam.v27i2.2905