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April 16, 2026Open Access

Assessment of the Agricultural Water Footprint of Major Crops in South India Under Changing Climatic Conditions

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Authors

SBS BalaselvakumarSHSB Hemavarthinii

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Overview

Systematic review evaluates agricultural water footprints in South India, suggesting strategies for sustainability.

Key Points

  • The review aims to synthesize evidence on the water footprints of major crops in South India and assess how climate change impacts these values.
  • Conducted a systematic literature search following PRISMA guidelines across various databases.
  • Reviewed 56 studies published between 2017 and 2026.
  • Analyzed water footprint components: green, blue, and grey for specified crops.
  • Rice has the highest total water footprint, ranging from 1,750 to 2,230 m³ per tonne.
  • Cotton has the largest per-tonne water footprint among field crops at 7,800 to 9,100 m³ per tonne.
  • Irrigation water footprint for rice and cotton is expected to increase by 35-62% by 2080 under RCP 8.5 due to higher evaporation rates.

Cite This Study

Balaselvakumar et al. (2026) studied this question.

synapsesocial.com/papers/69e07e582f7e8953b7cbf5a0https://doi.org/10.5281/zenodo.19555274
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