Data for: Planting architecture dominates source–sink plasticity under contrasting water and nitrogen supply in camelina–legume intercrops

This dataset supports the manuscript “Planting architecture dominates source–sink plasticity under contrasting water and nitrogen supply in camelina–legume intercrops,” submitted to Field Crops Research. The dataset contains 210 plot-level observations from a two-year split-plot field experiment conducted in 2023 and 2024, including irrigation regime, nitrogen level, planting architecture, dry-matter translocation, stem-reserve remobilization, harvest index and non-overlapping phenological traits. It also includes daily meteorological data from the Ardabil synoptic station (IRIMO station 40708) used to characterize the crop growing environment and construct the environmental-context figure. Variable dictionaries, factor definitions, source-weather records and reproducibility materials are included.