• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2024, Volume: 17, Issue: 6, Pages: 566-576

Original Article

Irrigation Scheduling Based on Evapotranspiration of Tomato (Solanumm Lycopersicum) Using Atmometer in The Upland Rolling Production Area

Received Date:31 October 2023, Accepted Date:12 January 2024, Published Date:08 February 2024


Objective : The goal is to provide the right amount of water to the crop, at the right time, to meet the crop's needs. It was conducted to estimate evapotranspiration using atmometers for irrigation scheduling that may be highly beneficial in soil water balance, water allocation and budgeting, irrigation management, and improving crop yield and production for greater income. Methods: This study was conducted at the Organic Agricultural Research and Development Innovation Center at the Bataan Peninsula State University – Abucay Campus, Bangkal, Abucay, Bataan, Philippines (North 14°44'28” East 120°27'04”). The effects of using different evapotranspiration estimation methods on the timing and amounts of water application were then evaluated by using a computed irrigation scheduling model. Findings: The atmometer ( and Penman-Monteith ( values were statistically analyzed using linear regression (y=0.8573x + 1.586), coefficients of determination (R² = 0.7236), root mean – squared error (RMSD = 0.73), mean bias error (MBE = 0.03), and the t-statistics (significant at 5% level). The study revealed that the ETo-A data strongly correlated with the ETo-PM data. Using an atmometer for scheduling irrigation on tomatoes would have resulted in an equally similar distribution of irrigation events, more water would have been provided throughout the season compared to using ETo-PM data. Novelty : The calibrated evapotranspiration data from the atmometer may guide appropriate irrigation depth and schedule for tomatoes. By aligning irrigation intervals with other crops’ water requirements, farmers can optimize water usage, minimize water stress, and achieve higher crop yields.

Keywords: Atmometer, Bataan Philippines, Evapotranspiration, Tomato, Penman-­Montheith Equation


  1. Djaman K, Rudnick D, Moukoumbi YD, Sow A, Irmak S. Actual Evapotranspiration and Crop Coefficients of Irrigated Lowland Rice (Oryza sativa L.) under Semiarid Climate. Italian Journal of Agronomy. 2019;14(1):19–25. Available from: https://doi.org/10.4081/ija.2019.1059
  2. Niyogi D, Jamshidi S, Smith D, Kellner O. Evapotranspiration Climatology of Indiana Using In Situ and Remotely Sensed Products. Journal of Applied Meteorology and Climatology. 2020;59(12):2093–2111. Available from: https://doi.org/10.1175/JAMC-D-20-0024.1
  3. Tomato | Land & Water. Food and Agriculture Organization of The United Nations. Available from: https://www.fao.org/land-water/databases-and-software/crop-information/tomato/en/
  4. Colimba-Limaico JE, Zubelzu-Minguez S, Rodríguez-Sinobas L. Optimal Irrigation Scheduling for Greenhouse Tomato Crop (Solanum Lycopersicum L.) in Ecuador. Agronomy. 2022;12(5):1–15. Available from: https://doi.org/10.3390/agronomy12051020
  5. Ruelas-Islas JD, Rubiños-Panta JE, Peinado-Fuentes LA, Mendoza-Pérez C, Martínez-Ruiz A, Escobosa-García I. Tomato water consumption in the greenhouse according to the number of stems. Revista mexicana de ciencias agrícolas. 2022;13(28):137–147. Available from: https://doi.org/10.29312/remexca.v13i28.3269
  6. Solis ES, Dionio L, Duran R, Dacup J. Utilization of Indigenous Mulches on the Growth and Yield of Different Tomato Varieties in Catarman, Camiguin, Philippines. American Journal of Agricultural Science, Engineering, and Technology. 2022;6(2):37–47. Available from: https://doi.org/10.54536/ajaset.v6i2.463
  7. Ochoa-Sánchez A, Crespo P, Carrillo-Rojas G, Sucozhañay A, Célleri R. Actual Evapotranspiration in the High Andean Grasslands: A Comparison of Measurement and Estimation Methods. Frontiers in Earth Science. 2019;7:1–16. Available from: https://doi.org/10.3389/feart.2019.00055


© 2024 Yambao & Ines. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)


Subscribe now for latest articles and news.