Tag archive: southern region

Preliminary PREDICTA® B results show prevalence of Ascochyta inoculum

Figure 1 Ascochyta blight (Phoma rabiei) population density in PREDICTA® B and NVT sites in 2017

Growers are now able to utilise the PREDICTA® B DNA-based soil test to detect the presence of Ascochyta blight inoculum (Phoma rabiei) in their paddocks. Initial testing has shown that the Ascochyta fungus was detected in 35 per cent of samples from the Northern Region. This finding is a concern […]

Chocolate Spot in Vetch – Northern Victorian Mallee

Figure 2. Botrytis spp. causing Chocolate spot in vetch.

This article was originally published as an Agriculture Victoria CropSafe Crop Alert.
Chocolate spot has been found in some early sown vetch crops in the Northern Victorian Mallee. This disease develops in warm and humid canopies. Given suitable conditions this can be a damaging disease that may warrant control with fungicides, […]

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 […]

Blackspot Manager for field peas

Blackspot Manager is a forecasting model for ascochyta blight (synonym: blackspot) of field peas. It can be used by agronomists and growers to help identify the best balance between early sowing and potential yield loss from ascochyta blight. Windborne ascochyta spores are released from infected stubble early in autumn, with […]

Latest on Cereal disease – 2017 GRDC Update Papers

Keep up with the latest research information on cereal diseases including Septoria tritici blotch of wheat, crown rot, rust, Fusarium head blight, and yellow leaf spot. 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 […]

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 […]

Latest on Pulse disease – 2016 GRDC Update papers

Keep up with the latest research information on Pulse diseases including ascochyta, phytophthora, root lesion nematode and viruses. The following papers were presented at the GRDC Updates across Australia in February and March 2015. There were no papers presented in the Western region.

Southern region papers
Northern region papers

Click the paper titles […]