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 […]
Tag archive: canola
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 […]
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
Canola disease […]
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.
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)
By Marcroft Grains Pathology.
Figure 1. Blackleg leaf lesion on canola
Blackleg is a fungal disease of canola that can cause severe yield loss. It is more severe in areas of intensive canola production as fungal spores are released from the previous year’s canola stubble and spread by wind and rain splash. With good […]
Keep up with the latest research information on Canola diseases including BWYV, sclerotinia and blackleg. Below are the take home messages from papers presented at the GRDC Updates in February and March 2015. There were no papers in the Western or Northern regions.
Click the paper titles to view the full […]
Unusual blackleg symptoms were observed on canola stems and branches across southern Australia in 2014. Early-sown canola is more likely to be flowering and elongating during the peak blackleg infection window and suffer stem and branch cankers as a result.
Sowing time and variety resistance ratings in the Blackleg Management Guide […]
Brenda Coutts, DAFWA, talks about the Beet western yellows virus (BWYV) outbreak in canola in South Australia in 2014 at the GRDC updates in Adelaide, February 2015. She outlines management strategies that can help reduce the amount of BWYV.
Brenda joined Jenny Davidson (SARDI) and Paul Umina (cesar) as part of […]
In 2014, canola crops across SA, western Victoria and some parts of NSW were severely affected by beet western yellows virus (BWYV) (synonym; turnip yellows virus). Significant rainfall over much of the southern cropping zone in January 2015 has initiated a green bridge, which has the potential to host large […]