LEMOS FILHO, Luís César de Aquino.; CARVALHO, Luiz Gonsaga de.; EVANGELISTA, Adão Wagner Pêgo.
Abstract:
The objective of this work was to determine the variability in the time and in the space
of the evapotranspiration of reference (ET0) for the state of Minas Gerais during the year. The values
of ET0 were dear for the method of Penman-Monteith, standardized by the Food and Agriculture
Organization (FAO), starting from data originated diaries of registrations of 42 climatological stations
of the National Institute of Meteorology (INMET) regarding a period of 17 years (1961 to 1978). In
the general, the results showed that the evapotranspiration of reference is plenty variable in Minas
Gerais, getting to present medium values of 914 mm year-1 to values of 1.977 mm year-1. The largest
variations, so much space as storms, they are registered in the north of the state, where they also
happen the largest values of ET0, showing to be an area with larger need of the use of the irrigation
and appropriate to the cultivation of crops adapted to the stress water. In function of the clear
distinction that they presented the data of ET0 geospatializeds in the you measured areas of the state of
Minas Gerais, the knowledge of the correct value of ET0 in each place will bring benefits to the
producers in the handling of the irrigation.
