Modelling Waterlogging Impacts on Crop Growth: A Review of Aeration Stress Definition in Crop Models and Sensitivity Analysis of APSIM

Currently, crop physiological responses to waterlogging are considered only in a few models and limited way. Here, we examine the process bases of seven contemporary developed model growth waterlogged conditions. The representation plant recovery these is over-simplified, while adaptation or phenotypic plasticity due often not considered. Aeration stress conceptualisation varies from use simple multipliers equations describing transpiration biomass complex linkages aeration-deficit factors with root growth, nitrogen fixation. We recommend further studies investigating more holistic impacts multiple stresses caused by behaviours driven soils climate. A sensitivity analysis using one (a developer version APSIM) default parameters showed that has greatest impact on photosynthesis, followed phenology leaf expansion, suggesting need for improved linking carbon assimilation. Future should compare ability simulate real situ effects consistent experimental data initialisation, calibration validation. conclude future modelling must focus improving extent which soil porosity, texture, organic plant-available water affect stress, ensuing temporal phenology, yield.