Estimation models of micrometeorological elements in a protected environment

Abstract

Protected environments have been studied, especially those using plastic sheeting, for both commercial and research purposes. In these environments, the irrigation management frequently depends on internal micrometeorological elements, which are often not available to users. One solution to this problem would be the utilization of models to estimate these elements using data measured outside the greenhouse. This work aimed to develop models for estimating micrometeorological elements in greenhouse conditions, for the region of Piracicaba-SP. The data used (temperature, relative humidity and solar
radiation) were obtained from the meteorological station of the ESALQ/USP and from a station installed within a protected the environment of the same institution. The estimate of evapotranspiration was calculated using the Penman-Monteith method, recommended by FAO-56 through the program REF-ET. Statistical indicators were used for the comparisons between conditions and it is concluded that the models allow the estimation of micrometeorological elements for protected environments according to the field conditions.