Field Crop Diseases

Early severe blackleg infection requires fungicide application

Monitor crops for blackleg
Growers are usually encouraged to monitor for blackleg in the spring. However, in 2016 widespread, severe early blackleg leaf lesions have occurred across Australia’s canola growing regions.
The increased incidence of early disease is due to the following key factors:

continued leaf wetness driving the disease cycle;
the blackleg […]

Blackleg fungicide tolerance survey 2015

As canola becomes more common in the rotation and the intensity of production increases so does growers reliance on fungicides to combat blackleg infection. In 2015, researchers surveyed commercial paddocks for the presence of fungicide tolerance in blackleg populations. Steve Marcroft discusses the survey, its findings and the implications for […]

Understanding the cause of blackleg stem and branch cankers

 
In recent years, blackleg infection has affected the upper stems and branches of canola plants leading to yield loss as branches and pods on affected plants senesce prematurely causing yield loss. Steve Marcroft explains the factors researchers now believe are causing cankers on stems and branches of canola crops.
Further information
For […]

Stop the Spot continues the fight

Yellow spot causes tan – coloured lesions on the leaves that are surrounded by yellow halos.
Growers and advisers are being encouraged to send in samples of leaves with yellow spot and join researchers in the fight against yellow spot.
Results from the second year of the Stop the Spot campaign have […]

Updated advice for chickpea Ascochyta and Botrytis Grey Mould management

By Kevin Moore, NSW DPI
Recommended management for Ascochyta blight and Botrytis Grey Mould (BGM) in the Northern Region has been altered as a result of changes to predicted winter and spring rainfall. It is recommended that growers take a conservative approach to Ascochyta management and use an integrated disease management […]

Disease testing services around Australia

Accurate plant in-crop disease diagnosis is essential to selecting the appropriate management technique. Pre-season testing of seed or soil will give growers a good understanding of the risk of a particular disease developing. In season testing, provides a diagnosis of what is affecting the crop at that time and allows […]