NY00007 - Black Root Rot Chalara - A Survey of Australian Nurseries

A national survey of the Australian Nursery Industry has provided a snapshot of the effect of black root rot on the industry. Black root rot is caused by the fungus Chalara elegans. The Australian nursery industry estimated that the black root rot disease is costing the industry $425,000 per annum. The survey indicated that black root rot was most prevalent in Victoria and Queensland. It was more common on smaller, younger plants compared with older, larger plants. This disease caused more problems in nurseries during summer than at any other time of year.