Biocontrol agents (BCAs) are alternatives to synthetic fungicides with low risk to the environment and human health. Although several studies on the biocontrol of gray mold in vineyards have been performed, it is necessary to improve the usage of BCAs in fields conditions. Therefore, in the present study, BCAs were used both in calendar-based [based on four growth stages (GSs), i.e., flowering, pre-bunch closure, veraison, and before harvest] and predictive model-based strategies (only when Botrytis cinerea infection risk was predicted by the model). The BCAs applied during the seasons were selected considering the grapevine GSs. Treatments performed with BCAs were compared with synthetic fungicide treatments and an untreated control. The trials were conducted in three experimental vineyards with four epidemics. To evaluate the level of gray mold control of each treatment, disease severity was assessed at harvest and the presence of latent infection was evaluated.

中文翻译：

---

数学模型与生物防治剂基于目标的应用相结合，用于控制葡萄园灰葡萄孢

生物防治剂 (BCA) 是合成杀菌剂的替代品，对环境和人类健康风险较低。尽管已经进行了几项关于葡萄园灰霉病生物防治的研究，但仍有必要改善 BCA 在田间条件下的使用。因此，在本研究中，BCA 既用于基于日历的策略（基于四个生长阶段（GS），即开花、花束前闭合、转色期和收获前），也用于基于预测模型的策略（仅当葡萄孢属该模型预测了灰霉病感染风险）。在选择季节期间施用的 BCA 时要考虑葡萄树的 GS。将使用 BCA 进行的处理与合成杀菌剂处理和未处理的对照进行比较。这些试验是在三个有四种流行病的实验葡萄园中进行的。为了评估每种处理的灰霉病控制水平，在收获时评估疾病严重程度并评估潜在感染的存在。