Category: Oilseed diseases

White leaf spot of canola

Figure 1. Early symptoms of white leaf spot on canola leaf.

During 2017 there is an increased incidence of canola white leaf spot in many regions of southern Australia. The disease is distributed worldwide, but in Australia, it is not usually severe enough to cause yield loss. However, if environmental conditions are favourable, it can result in significant defoliation causing reduced […]

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 […]

Connecting the farm: Digital Ag and the “Internet of Things”

We recently held a webinar which provided an introduction to the concept of the ‘Internet of Things’. IoT is The networking of “things” like electronic devices, sensors and machinery has the potential to create efficiencies across all facets of life, and on farm.  
Jeff Hino, Digital Strategy consultant (previously Learning […]

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 […]

Wet conditions favour development of Sclerotinia stem rot in canola

Recent wet conditions have favoured the development of sclerotinia stem rot in canola crops across south-eastern Australia. Growers need to consider their risk and enact a management strategy now to avoid yield loss later in the season.
Key considerations for management
High risk indicators for sclerotinia
A combination of the following risk factors […]

Webinar: Sclerotinia in canola – what do we need to do?

This webinar was presented by Ravjit Khangura from DAFWA on July 11, 2016. The webinar covers early infection of canola crops with Sclerotinia and when to apply fungicides.
Key messages

Apothecia emergence is now widespread in Western Australia
Some crops have been infected pre-flowering
Disease epidemics are favoured by continuous wet and […]

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 […]

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 […]