Skip to main content
Log in

Actual Evapotranspiration for Sugarcane Based on Bowen Ratio-Energy Balance and Soil Water Balance Models with Optimized Crop Coefficients

  • Published:
Water Resources Management Aims and scope Submit manuscript

Abstract

Evapotranspiration is an important parameter to evaluate soil water deficit and water use efficiency, especially in locations with irregularly distributed precipitation. The aim of this study was to assess the daily actual evapotranspiration (ETa) estimated by the Thornthwaite and Mather soil water balance adapted for crops (ThM) and by the dual Kc method with the crop coefficients optimized from inverse modeling and by the adjustment suggested in the FAO-56 bulletin. The models were optimized and evaluated with actual evapotranspiration determined by the Bowen ratio – energy balance method (ETβ) for sugarcane at full canopy closure grown in Alagoas state, northeastern Brazil. The objective function of the inverse problem was defined in terms of ETβ and ETa estimated by the ThM or dual Kc method by optimizing the single crop coefficient (Kc) and the basal crop coefficient Kcb, respectively. Optimized Kc (1.05) and Kcb (1.03) were lower than those adjusted by the Kc FAO56 method (Kc = 1.25 or Kcb = 1.20), with optimized Kc slightly higher than the Kc obtained experimentally (1.01 ± 0.08). ETa estimated by the ThM and dual Kc method with optimized crop coefficients had similar high precision (r2 > 0.79) and accuracy (dm > 0.93 and RMSE < 0.30 mm d−1). However, using the coefficients adjusted from the FAO56 method overestimated ETa in both models.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

Availability of Data and Material

The observed data used in the present study are available upon the authors’ request.

Code Availability

The code of the soil water balance models used in the present study is written in the Open Model software and is available upon the authors’ request.

References

Download references

Funding

This study was funded by the Alagoas State Research Support Foundation (FAPEAL) and National Council for Scientific and Technological Development (CNPq) (Grant number: 60030 000698-2016, 312373/2018-0 and 435238/2018-3).

Author information

Authors and Affiliations

Authors

Contributions

Conceptualization, Supervision and Methodology: Souza J.L., Lyra G.B., Santos M.A.; Field experiment: Santos M.A., Lyra G.B., Teodoro I., Ferreira-Júnior R.A., Santos A.C.A., Souza R.C.; Software, Formal analysis, Writing—Original Draft preparation: Lyra G.B., Santos M.A., Martins S.C.F., Ferreira F.F.; Validation: Santos M.A., Martins S.C.F., Ferreira F.F.; Writing—Review and Editing: Lyra G.B., Teodoro I., Ferreira-Júnior R.A., Santos A.C.A., Souza R.C.

Corresponding author

Correspondence to Gustavo Bastos Lyra.

Ethics declarations

Ethics Approval

Not applicable.

Consent to Participate

All authors agree to participate in any survey or feedback task.

Consent for Publication

All authors agree to provide manuscript for publication to the publisher of the journal.

Conflict of Interest

The authors declare that they have no known competing interests. The authors have no relevant financial or non-financial interests to disclose.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

da Costa Faria Martins, S., dos Santos, M.A., Lyra, G.B. et al. Actual Evapotranspiration for Sugarcane Based on Bowen Ratio-Energy Balance and Soil Water Balance Models with Optimized Crop Coefficients. Water Resour Manage 36, 4557–4574 (2022). https://doi.org/10.1007/s11269-022-03263-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11269-022-03263-5

Keywords

Navigation