Abstract: A method of managing crop stress related to a crop growing within an agricultural field uses a cropping systems model executed on the computing device to simulate growth of the crop. At least one stress index representative of a crop stress affecting growth of the crop is calculated based upon acquired field centric data and one or more of stress thresholds associated with a determined growth stage of the crop to determine if a notification should be generated. This provides a tool to detect and quantify crops abiotic and biotic stresses at zone and field levels in actual time during the growing season using crop specific parameters, field data and remotely-sensed data, aiming to provide growers with useful information to mitigate crops stresses and increase yield.