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

本项目将采用多因素方法来确定土壤因子及其共线性，以预测由除虫菊类作物中的真菌Phoma luulicola引起的叶部病害。这将允许实施决策支持系统，从而可以权衡疾病管理选择与现场具体风险。还将评估当前以杀菌剂为基础的防治系统的替代管理战略，以评估其在减轻现场风险方面的有效性和作用。栽培控制方法的效果，如品种混合和宿主抗性，将根据疫情的时空特征进行模拟，并与在特定地点自然发生的流行病的效果进行比较。

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.