Perbandingan Pendugaan Evapotranspirasi Menggunakan Metode Aerodinamik, Penman-Monteith dan Panci Kelas A (Studi Kasus: Wilayah Pertanian Situgede, Darmaga, Bogor

Abstract

Evapotranspiration is the loss of water to the atmosphere by the combined processes of evaporation from soil surfaces and transpiration from plant. Evapotranspiration were estimated using aerodynamic and Penman-Monteith methods compared to the class A pan. The goodness of fit between aerodynamic method and Penman-Monteith with class A pan were analysed using chi square (𝜒2). Evapotranspiration values in ten days have similar pattern between the three methods. Chi square (𝜒2) between Penman-Monteith and class A pan method was lower than between aerodynamic method and class A pan method, 39.70 and 113.14 respectively. All methods show higher evapotranspiration value in dry season compared to wet season.