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February 27, 2026Water Practice & TechnologyOpen Access

Calibration and evaluation of SWAP model under PRD irrigation: a case study, Pakdasht, Iran

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Authors

NBNegar BehizadiSFSasan FaramarzmaneshMAMohmmad Amerian

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Overview

This case study calibrates the SWAP model for maize under PRD irrigation, indicating its potential for yield prediction.

Key Points

  • The study aims to calibrate the SWAP model for predicting maize growth under Partial Root-Zone Drying irrigation.
  • Calibrated the SWAP model under full irrigation conditions (100% water requirement).
  • Validated the model using deficit irrigation treatments (75% and 55% water requirements).
  • Assessed model performance based on plant height, leaf area index (LAI), and biomass yield.
  • The model showed high accuracy for LAI under full irrigation (R2 = 0.97).
  • Plant height predictions ranged from R2 = 0.88 to R2 = 0.99 across treatments.
  • Under full irrigation, biomass yield was predicted with R2 = 0.98, but accuracy dropped under deficit irrigation.

Cite This Study

Behizadi et al. (2026) studied this question.

synapsesocial.com/papers/69a13591ed1d949a99abf805https://doi.org/10.2166/wpt.2026.215
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