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MÉTODOS ALTERNATIVOS DE ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA (ETo) COMPARADOS AO MÉTODO PADRÃO DE PENMAN-MONTEITH FAO 56 PARA ARAPIRACA-AL
| Content Provider | Semantic Scholar |
|---|---|
| Author | Menezes, Stélio Maia Andrade, Felipe Silva, Alexandre R. C. Andrade Silva, Alexandra Toimil Lima, David Ferreira Barros, Vivian Segovia |
| Copyright Year | 2017 |
| Abstract | Irrigation management aims to supply the ideal amount of water for crops, with the purpose of rationalizing the use of available water resources as well as reducing unnecessary expenditures with inputs and energy. The determination of reference evapotranspiration (ETo) is directly related to water management in agriculture and is an important tool in estimating the water requirement of plants, as well as in the design of irrigation systems. To verify the suitability of alternative methods for ETo estimation compared to the Penman-Montheith standard FAO 56, makes possible the use of these methods in regions whose information on climatological variables is incipient or where there is a deficiency in total monitoring of meteorological elements, which limits the application of the standard model. The objective of this study was to compare the alternative methods of estimate of ETo Makkink (M-K), Hargreaves and Samani (H-S), Jensen and Haise (J-H), Priestley-Taylor (P-T) and FAORadiation (FAO-Rad) with the Penman-Montheith method (FAO 56) over a period of one year. The climatological data were acquired daily in an automatic meteorological station of the National Institute of Meteorology (INMET) located in the city of Arapiraca, located in Agreste of Alagoas, from january to december 2015. The evaluation of the methods was carried out by means of the coefficients of determinate (R) and correlation (r), Standard Error of Estimate (EPE) and concordance (d) and performance (c) indices. The methods FAO-Radiation and Hargreaves and Samani presented the best evaluation when compared to the Penman-Montheith method FAO 56, being shown as alternatives for the estimate of ETo in the region of Arapiraca, AL. However, the methods of Makkink, Jensen and Haise, and Priestley-Taylor presented unsatisfactory results in the estimate of ETo. |
| File Format | PDF HTM / HTML |
| DOI | 10.7127/iv-inovagri-meeting-2017-res2520533 |
| Alternate Webpage(s) | http://www.inovagri.org/anais/TC2520533.pdf |
| Alternate Webpage(s) | https://doi.org/10.7127/iv-inovagri-meeting-2017-res2520533 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
