DANTAS, S. M.; http://lattes.cnpq.br/7726537287729992; DANTAS, Sílvia Maria.
Abstract:
This study determined the crop coefficient, crop evapotranspiration through soil water
balance, water efficiency and use, productivity, and validation of the AquaCrop model
for the eggplant crop “Ciça” (Solanum melogena L.). The experiment was carried out in
two different climatic seasons, rainy and dry, in the region in 2022, distributed in two
blocks, to determine the effects of rainfed cultivation and the effect of water stress with
inspection slides for the treatments of 100% (T1), 80% (T2), 60% (T3), 40% (T4) and
20% (T5) of reference evapotranspiration (ETo) for daily water configuration via climate.
The simulations of the AquaCrop model for the safety treatments were calibrated and
validated, for the conservative and non-conservative parameters. The model performance
was evaluated using statistical indicators: root mean square error (RMSE), normalized
root mean square error (RMSEN), Nash and Stucliffe efficiency (EF), Willmontt's
concordance index (d) and forecast error (Pe). The values found prove the effectiveness
of the model. Given the results, the eggplant crop grown in dryland conditions proved to
be economically viable and for irrigated planting the recommended water depth for
eggplant cultivation under the agrometeorological conditions of the experiment was
100% of ETo; however, eggplant cultivation subjected to water deficit showed efficiency
for the treatment of 80% of ETo.
