High quantities of pesticides are applied on vineyards. For example, the average treatment frequency index (TFI) for French vineyards was 13.5 in 2016, whereas the average TFI for wheat (a major annual crop in France) was 4.9 in 2017. Reducing pesticide use is a key issue to improve viticulture sustainability. The aims of this study were (i) to analyse the evolution of pesticide use in vineyard farms voluntarily participating in a pesticide reduction programme, and (ii) to understand the options winegrowers used to reduce their pesticide use. We analysed data from the DEPHY farm network, including 244 cropping systems followed over 10 years and spread across 12 winegrowing regions. We used the TFI to assess the intensity of pesticide use. Mean pesticide use within the network decreased over the 10-year period and mostly concerned fungicide use. By analysing several indicators such as the number of treatments and the mean TFI per fungicide treatment, we were able to identify some of the management options mobilised for achieving this pesticide reduction. The use of biocontrol products and the reduction of sprayed doses were often associated with a low TFI. The analysis of yield evolution showed a significant mean reduction, although it was smaller than the TFI reduction. This raised the question of the impact of pesticide reduction on productivity. Further trade-off analyses are required in the future.

大量的杀虫剂被施用于葡萄园。例如，2016 年法国葡萄园的平均处理频率指数 (TFI) 为 13.5，而 2017 年小麦（法国的主要一年生作物）的平均 TFI 为 4.9。减少农药使用是提高葡萄栽培可持续性的关键问题。本研究的目的是 (i) 分析自愿参与农药减少计划的葡萄园农场中农药使用的演变，以及 (ii) 了解葡萄种植者用于减少农药使用的选项。我们分析了来自 DEPHY 农场网络的数据，包括 244 种种植系统，追踪了 10 多年，分布在 12 个葡萄种植区。我们使用 TFI 来评估农药使用的强度。网络内的平均农药使用量在 10 年间有所下降，主要与杀菌剂的使用有关。通过分析处理次数和每次杀菌剂处理的平均 TFI 等多项指标，我们能够确定为实现农药减少而动员的一些管理方案。生物防治产品的使用和喷雾剂量的减少通常与低 TFI 相关。产量演变分析显示平均下降幅度显着，但低于 TFI 下降幅度。这就提出了农药减少对生产力的影响的问题。未来需要进一步的权衡分析。生物防治产品的使用和喷雾剂量的减少通常与低 TFI 相关。产量演变分析显示平均下降幅度显着，但低于 TFI 下降幅度。这就提出了农药减少对生产力的影响的问题。未来需要进一步的权衡分析。生物防治产品的使用和喷雾剂量的减少通常与低 TFI 相关。产量演变分析显示平均下降幅度显着，但低于 TFI 下降幅度。这就提出了农药减少对生产力的影响的问题。未来需要进一步的权衡分析。