Scald has been detected in several early sown barley crops in the Wimmera and Mallee of Victoria. The disease has been favoured by wet seasonal conditions across the south eastern region and will be common in early sown crops and crops sown into barley stubble from 2014 and 2015. Scald […]
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 […]
Management of the major mungbean diseases in Australia
Presented at Towoomba, Chinchilla and Mullaley by Lisa Kelly DAF QLD
For management of halo blight and tan spot: Plant seed with the lowest possible levels of infection, use varieties with higher levels of resistance, clean harvesting equipment, control weeds and volunteers, and […]
Early detection of powdery mildew in wheat in the Bindi Bindi region and south of Kadoux prompted the DAFWA team to present a webinar on powdery mildew in wheat and the implications for the 2016 season. This webinar was presented on July 6, 2016.
The key messages from the webinar […]
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.
Apothecia emergence is now widespread in Western Australia
Some crops have been infected pre-flowering
Disease epidemics are favoured by continuous wet and […]
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 […]
Stubble-borne diseases such as yellow leaf spot (YLS) of wheat and spot form of net blotch (SFNB) of barley will need to be monitored during 2016 and foliar fungicides applied where necessary. These diseases will be common and most severe in early sown crops with wet seasonal conditions across the […]
Russian wheat aphid
On June 1, 2016 PIRSA confirmed that Russian wheat aphid had been detected in mid-north South Australia. A biosecurity operation involving PIRSA, Biosecurity SA and SARDI entomologists identified further infested sites and a trace back operation is currently underway to determine the source of the detection. On June […]
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 […]
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.