Estimation of Reference Evapotranspiration in Bhavanisagar Block of Tamil Nadu Using  FAO ETo Calculator

M. Rajavel; V. Guhan; V. Vakeswaran; K. Bhuvaneswari; R. Gowtham; S. Priyanka

doi:10.9734/ijpss/2022/v34i1831172

Research Article Open access CC BY 4.0

Estimation of Reference Evapotranspiration in Bhavanisagar Block of Tamil Nadu Using FAO ETo Calculator

M. Rajavel, V. Guhan, V. Vakeswaran, K. Bhuvaneswari, R. Gowtham, S. Priyanka

International Journal of Plant & Soil Science · pp. 303–307 · Published 14 May 2022

10.9734/ijpss/2022/v34i1831172

Abstract

The FAO Penman-Monteith equation is used by the ETo calculator software to calculate reference evapotranspiration – ETo from meteorological data. FAO chose this technique as the standard because it is physically based, roughly approximates grass ETo in the studied region, and explicitly considers both physiological and aerodynamic aspects. The application can handle climate data on a daily, ten-day, and monthly basis. The data may be supplied in a variety of units, and it can be analyzed using regularly used meteorological parameters. In this study, ETo calculator version 3.2 is used to estimate the ETo in Bhavanisagar. The results revealed that, it is possible to estimate ETo by using the ETo calculator. The concept of the reference evapotranspiration was introduced in this study and the result obtained are used further to estimate the evaporative demand of the atmosphere independently of crop type, crop development and management practices.

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M. Rajavel, V. Guhan, V. Vakeswaran, K. Bhuvaneswari, R. Gowtham, S. Priyanka (2022). Estimation of Reference Evapotranspiration in Bhavanisagar Block of Tamil Nadu Using FAO ETo Calculator. International Journal of Plant & Soil Science , 303–307. https://doi.org/10.9734/ijpss/2022/v34i1831172

Affiliations

M. Rajavel — Water Technology Centre, TNAU, Coimbatore – 641003, India.
V. Guhan — Agro Climate Research Centre, TNAU, Coimbatore – 641003, India.
V. Vakeswaran — Agricultural Research Station, TNAU, Bhavanisagar – 638451, India.
K. Bhuvaneswari — Directorate of Crop Management, TNAU, Coimbatore – 641003, India.
R. Gowtham — Agro Climate Research Centre, TNAU, Coimbatore – 641003, India.
S. Priyanka — Directorate of Crop Management, TNAU, Coimbatore – 641003, India.

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