Supplementary Material

Table SI-1: Monthly precipitation (mm) from June to September (2019–2022) for 9 weather stations located in the Nouvelle-Aquitaine and Occitanie regions (the numbers between brackets refer to the French department in which the weather station is located).

Table SI-2: Assumptions used for calculating the balanced yield (t.ha⁻¹) as a function of selling price (€.t⁻¹) for sunflower and soybean, grown as double crops with the most common crop practices according to two scenarios of production costs.

© J. Pitchers et al., Published by EDP Sciences, 2023