A petal survey for Sclerotinia in canola across NSW and northern Victoria

Some districts in NSW and Victoria are known to frequently develop Sclerotinia stem rot. The purpose of conducting the petal survey was to identify if there are significant differences in the level of petal infestation between districts where the disease develops frequently, compared with those districts where the disease develops once every few years. This information will indicate what influences disease development, background inoculum levels or environmental conditions, or both.

已知新南威尔士州（New South Wales, NSW）与维多利亚州（Victoria）的部分产区易频发菌核茎腐病（Sclerotinia stem rot）。本次开展花瓣调查的目的，在于明确病害频发产区与每数年暴发一次病害的产区之间，花瓣侵染水平是否存在显著差异。该调查结果将有助于厘清病害发生的影响因素：是本底菌源量、环境条件，抑或是二者共同作用。