FIGURE 1.

Computation of growth stages and environmental covariates (ECs) for year 2014 in the locality of Skive. In total, the complete crop cycle was divided into 27 shorter periods of 100 GDD (27 growth stages). For each growth stage, a set of ECs summarizing environmental descriptors linked to water availability, radiation and temperature were computed as described in Supplementary material 1. The same approach was used for all year-location combinations. GDD: growth degree days, the GDD were estimated as the thermal sum of daily average temperature over 0°C.