Modeling Study on Optimizing Water and Nitrogen Management for Barley in Marginal Soils.

ABSTRACT: Water and N availability are key factors limiting crop yield, particularly in marginal soils. This study evaluated the effects of water and N stress on barley grown in marginal soils using field trials and the AgroC model. Experiments from 2020 to 2022 in Lithuania with spring barley cv. KWS Fantex under two N fertilization treatments on sandy soil provided data for model parameterization. The AgroC model simulated barley growth to assess yield potential and yield gaps due to water and N stress. Potential grain yields (assuming no water or N stress) ranged from 4.8 to 6.02 t DW ha^-1, with yield losses up to 54.4% assuming only N stress and 59.2% assuming only water stress, even with the N100 treatment (100 kg N ha^-1 yr^-1). A synthetic case study varying N f

SUBMITTER: Zydelis R 

PROVIDER: S-EPMC11901529 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature