Evaluation of prospective rotations (see table 3 for details) for grass weed control with ALOMYSYS as a function of herbicide treatment conditions and primary tillage. Each scenario was simulated 10 times with randomly chosen climate series from Dijon, Burgundy. The left-hand axis shows the medium-term weed infestation, distinguishing the reference system (black bars) and prospective scenarios (green, blue and red bars indicating whether 0%, 10% or >10% of repetitions with infestation > reference). The right-hand axis indicates the risk of long-term weed increase (yellow bars).