Towards a durable management strategy for ray blight in Tasmanian pyrethrum crops

本项目将采用多因子方法对土壤因子及其共线性进行鉴定，用于预测除虫菊属作物的叶面病害。这将使决策支持系统得以实施，据此，疾病管理方案可与特定地点的风险进行权衡。还将评估目前以杀菌剂为基础的控制系统的其他管理策略的有效性和在减轻现场风险方面的作用。栽培控制方法（如品种混合和宿主抗性）的效果将根据流行病的时空特征进行建模，并与特定地点自然发生的流行病进行比较。

This project will take a multi-factorial approach to the identification of edaphic factors and their collinearity for the prediction of foliar disease caused by the fungus, Phoma ligulicola in Tasmanian pyrethrum crops. This will allow implementation of a decision support system whereby disease management options may be weighed against site specific risk. Alternative management strategies to the current fungicide based system for control will also be assessed for their efficacy and role in mitigating site risk. The effect of cultural control methods such as cultivar mixtures and host resistance will be modelled on the spatio-temporal characteristics of the epidemic and compared to these in naturally occurring epidemics at specific sites.