Tag archive: blackleg

Monitor blackleg severity to ensure return on fungicide application

During 2015 and 2016 the blackleg fungus overcame the blackleg resistance of some Group A cultivars. These cultivars dropped from Moderately Resistant (MR) to Moderately Susceptible (MS) and all updated ratings are available in the 2017 Autumn Blackleg Management guide. In the lead up to the 2017 season, fungicide application […]

Latest on Canola disease – 2017 GRDC Update Papers

Keep up with the latest research information on canola diseases including blackleg and sclerotinia. The following papers were presented at the GRDC Updates across Australia in February and March 2017. Click the paper titles to view the full papers. We’ve also pulled together all the:

Cereal disease papers
Pulse disease papers

Southern Region
Canola disease […]

Blackleg monitoring sites – 2016 results

Blackleg monitoring results for all 2016 canola producing regions are now available. In 2016 cultivars representing each of the resistance groups were sown at 37 trials across Australia and monitored for levels of blackleg disease. These data indicate which resistance groups have higher levels of disease compared to the other resistance […]

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 […]

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 […]

Latest on Oilseed disease – 2016 Update papers

Keep up with the latest research information on oilseed diseases including sclerotinia and blackleg. Below are the take home messages from papers presented at the GRDC Updates in February and March 2016.

Northern Region
Southern Region
Western Region

Click the paper titles to view the full papers.

Northern Region
Weeds and crop stubble as a pathogen […]

Blackleg monitoring sites 2015

By Marcroft Grains Pathology.

Our results for 2015:
Blackleg monitoring results for all 2015 canola producing regions are now available. The monitoring results PDF files below include the national summary, state summaries and individual NVT site results.

NSW Blackleg monitoring summaries 2015 (191kb PDF)
VIC Blackleg monitoring summaries 2015 (160kb PDF)
SA Blackleg monitoring summaries 2015 (179kb PDF)
WA […]

Sunflower Growers Guide to Integrated Disease Management

By Sue Thompson, University of Southern Queensland.
A new guide to Successful sunflower production using integrated disease management (IDM) provides information on managing diseases in sunflower within the context of the whole farm rotation.
Comprehensive ready reckoner tables allow growers to review the impact that rotational crops will have on inoculum for […]