Branched broomrape (Phelipanche ramosa (L.) Pomel) is a parasitic plant, which causes severe yield losses in major crops worldwide. Due to its broad host range, including numerous non-parasitic weed species, the persistence of its seeds in the soil, and the poor efficiency of available management techniques, broomrape management is complex. In a previous paper, we developed a broomrape-dynamics model called PheraSys to support the design of management strategies combining multiple techniques aiming at long-term control of broomrape. Here, the objective is to use this simulation model to (1) check the consistency of simulations vs. literature data, (2) evaluate the potential of cropping systems to manage the combination of branched broomrape and weeds, (3) investigate whether weeds can biologically regulate parasitic plants in agroecosystems. Five contrasting cropping systems including different levers known to influence broomrape dynamics were simulated with different weather series. Four simulation series were run, with or without broomrape as well as with or without weeds, to discriminate the individual effects of weeds and broomrape on crop production as well as the effect of weeds on broomrape dynamics. Simulations with PheraSys showed that delayed sowing in combination with the use of trap and catch crops are promising for reducing broomrape infestation and yield losses in the long term. Tolerating a temporary and/or low-density weed flora in such cropping systems could improve broomrape management because spring/summer weeds could reduce broomrape seed bank by triggering broomrape germinations that would not reproduce. During cash-crop growth, weed contribution to broomrape infection would be negligible. However, these conclusions are only valid if broomrape-attaching weeds reproduce before broomrape has time to do so, which needs to be checked with field experiments for most weed species.

分枝扫帚菜( Phelipanche ramosa (L.) Pomel) 是一种寄生植物，会导致世界范围内主要作物的严重减产。由于其寄主范围广泛，包括许多非寄生杂草种类、其种子在土壤中的持久性以及可用管理技术的低效率，扫帚管理是复杂的。在之前的一篇论文中，我们开发了一个名为 P hera S ys的扫帚动力学模型支持设计结合多种技术的管理策略，旨在长期控制扫帚菜。在这里，目标是使用该模拟模型来 (1) 检查模拟与文献数据的一致性，(2) 评估种植系统管理分枝扫帚和杂草组合的潜力，(3) 调查杂草是否可以生物调节农业生态系统中的寄生植物。使用不同的天气系列模拟了五种对比鲜明的种植系统，包括已知会影响扫帚动力学的不同杠杆。运行四个模拟系列，有或没有扫帚以及有或没有杂草，以区分杂草和扫帚对作物生产的个体影响以及杂草对扫帚动力学的影响。使用 P hera 进行模拟小号YS表明在组合延迟播种与使用陷阱和catch作物是有前途的用于减少在长期肉苁蓉侵染和产量损失。在这种种植系统中容忍临时和/或低密度杂草菌群可以改善扫帚管理，因为春季/夏季杂草可以通过触发扫帚发芽来减少扫帚种子库，而这些种子库不会繁殖。在经济作物生长期间，杂草对扫帚菜感染的贡献可以忽略不计。然而，这些结论只有在附着扫帚的杂草在扫帚有时间繁殖之前才有效，这需要对大多数杂草进行田间试验。