Open AccessValidation of the ISAREG model for the irrigation management of the melon crop in the state of Ceará
Author(s) -
Kleiton Rocha Saraiva,
Francisco Marcus Lima Bezerra,
Francisco de Souza,
Luís de França Camboim Neto,
Clayton Moura de Carvalho,
Raimundo Rodrigues Gomes Filho,
Hernandes de Oliveira Feitosa,
Mário de Oliveira Rebouças Neto,
Ketylen Vieira Santos,
Ralph Wendel Oliveira de Araújo
Publication year - 2021
Language(s) - English
Resource type - Journals
ISSN - 2411-2933
DOI - 10.31686/ijier.vol9.iss10.3420
Subject(s) - evapotranspiration , water balance , environmental science , crop coefficient , irrigation , irrigation management , hydrology (agriculture) , soil water , water content , agricultural engineering , soil science , agronomy , geology , engineering , ecology , geotechnical engineering , biology
The research aimed to validate the ISAREG model, introducing it to water management studies in irrigation in the State of Ceará, comparing results of experimental research, with results of simulations, carried out with the use of software, analyzing the following variables: crop evapotranspiration, variation of soil water storage and water flow in the soil. A bibliographic survey was carried out to obtain soil, climate and crop information required by the model to perform the soil water balance. Aiming at the validation of ISAREG, the model was fed with the following data: reference evapotranspiration, precipitation, phenological phases of the crop, effective depth of the root system, water availability factor in the soil, crop coefficient and soil information. Subsequently, the irrigation management option "dates and irrigation depths" was selected, and ISAREG performed the simulation of the soil water balance. The ISAREG demonstrated a detailed soil water balance, being validated in this study, because when its results were compared to the experimental ones, there was similarity in the trends of the variables analyzed, despite the reduced correlation verified regarding the variation of water storage in the soil.