Calibração e Análise de tanques reduzidos para estimativa da Evapotranspiração de Referência em Confresa-MT

• Autor(a) principal: SantAna, José Antonio do Vale
• Data de Publicação: 2022
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista PesquisAgro
• Texto Completo: http://periodicos.cfs.ifmt.edu.br:443/periodicos/index.php/agro/article/view/1536
• topic: Evaporation, Irrigation, Low Cost Methods.; Evaporação, Irrigação, Métodos de Baixo Custo.

The objective of this work was to evaluate the efficiency of reduced tanks to estimate the reference evapotranspiration in the municipality of Confresa. The tanks were made with plastic and metal drums of 200 liters, being cut in three different heights (25, 35 and 45 cm). For reading, measuring tapes were glued to the inside of the tanks. The experiment was installed in a grassy area, next to an automatic weather station. The tanks were placed in pairs of equal height on a wooden platform and spaced out in the area. The readings and collection of meteorological data were carried out at 09:00 am. The evaporation of the tank was calculated from the difference between two consecutive readings and the ETo obtained through the Tank Class A method. For calibration and validation of the models, the coefficient of determination (R2), square root of the mean of the squares of the errors was used. (RMSE), model efficiency (Ef), Person coefficient (r) and the slope of the simple linear equation of the type Y = aX. The 45 cm metallic tank provided better adjustments for calibration and data validation for the months of December to May.