Estimativa de evapotranspiração e coeficiente de cultura do tomateiro industrial utilizando o algoritmo SAFER

Abstract

The objective of this study was to estimate the current evapotranspiration and the respective cultivation coefficients of two industrial tomato hybrids by the energy balance model using the SAFER algorithm, using a traditional micrometeorological method using ETo (Penman-Monteith) reference evapotranspiration with the Kcs recommended by FAO 56 and EMBRAPA. The study was carried out at the Piracanjuba head farm, in the municipality of Silvânia, GO, from May to August 2015. In addition, the potential of leaf water and soil water content was monitored by the local dynamic water balance. The Kcs estimated by the SAFER method presented a significant correlation with the FAO 56 and Embrapa methods (FAO 56, R² = 0.98, Embrapa, R² = 0.95). The ETc estimated by the SAFER method showed a significant correlation with the micrometeorological methods (FAO 56, R2 = 0.97, Embrapa, R2 = 0.97), which could be used to estimate ETa in the region.