Coupling a Pest and Disease Damage Module with CSM-NWheat: A Wheat Crop Simulation Model

Highlights CSM-NWheat, a DSSAT wheat crop model, was coupled with pest module named PEST. The model can simulate the impact of and disease damage on crops. Pest is expressed in daily steps by communication links called coupling points. Coupling points are linked state variables at which be applied. Field pest-scouting reports linear interpolation used to compute rates. Abstract . Wheat one most important global staple crops affected numerous pests diseases. Depending their intensity, diseases cause significant economic losses even failures. models assist decision-making, thus helping reduce losses. Most simulation account for abiotic stresses such as drought nutrients, but they do not biotic caused Therefore, objective this study couple dynamic CSM-NWheat. were integrated into CSM-NWheat applying all plant components, including leaves, stems, roots, grains, entire plant, assimilate supply. tested simulating virtual levels applied each point. Measured foliar tan spot (Pyrenophora tritici-repentis) also simulated. modified accurately estimated reduction leaf area growth yield loss when compared observed data. With incorporation module, now predict potential development, ultimately yield. Keywords: Biotic stress, Decision support, DSSAT, Model coupling, Yield loss.