RELATIONS BETWEEN EVAPORATION AND CLIMATE ELEMENTS IN 24-HOUR PERIODS IN THE ALTAGRACIA ZONE, LARA STATE, VENEZUELA

Abstract

The rate of water evaporation in the different regions of the planet depends on the existing climatic conditions and directly affects the irrigation needs of crops. The objective was to establish the relationship between evaporation and climate elements in periods of 24 hours in an agricultural area of ​​Altagracia, Lara state, Venezuela. Three days (repetitions) with little or no cloudiness between the months of October and November were selected, and the evaporation rate was measured every two hours during the day. In addition, data on solar radiation, air and soil temperature, air humidity and wind speed were recorded. A regression analysis was performed. Solar radiation presented a low association with the rate of water vaporization. Temperature was the climatic element that showed the highest coefficient of determination in its relationship with the evaporation rate. wind speed was higher during daytime hours; It was concluded that the evaporation of water in periods of 24 hours is closely linked to air temperature, relative humidity and wind speed, this being the main element of the climate that promotes the high rate of night evaporation, an important factor to consider. in irrigated agriculture.