Benchmarking blackleg fungicide resistance

Canola seedlings being screened for fungicide resistance in blackleg populations.

Understanding the current levels of fungicide resistance in blackleg populations is key to monitoring the effectiveness of current fungicides and new chemistries entering the market. In 2015 a survey of 200 canola paddocks found 15% of canola paddocks contained blackleg that was tolerant to Jockey fungicide (fluquinconazole). This season, Marcroft […]

Bacterial blight survey to inform breeding efforts

Symptoms of bacterial blight on Kaspa field peas grown at Horsham, Victoria

Following on from samples submitted in 2017, researchers are again this year requesting industry to submit green field pea samples infected with bacterial blight from all pea growing regions. These samples will help researchers understand the prevalence of the pathovars within the bacterial blight pathogen population. Bacterial blight disease in […]

Bacterial Blight survey to inform breeding efforts – 2017 survey results

Bacterial blight

In 2017 researchers requested the industry to submit field pea samples infected with bacterial blight from all pea growing regions around Australia to help understand the prevalence of the pathovars within the pathogen population. Bacterial blight disease in field peas is caused by the bacterial pathogen, Pseudomonas syringae pathovars syringae […]

When drought meets disease: what can we expect for our 2018 winter cereals?

Figure 1. Cereal crop exhibiting honey brown discolouration of stem bases which is characteristic of crown rot infection disease cereals (right) versus healthy crop (left). Source: Toni Petronaitis

Severe rain deficiencies persist in Central and Northern New South Wales and Southern Queensland, with drier than average conditions expected for the growing season.  This widespread drought in the northern grains region has left growers with limited options for sowing their winter cereal crops. However, dry conditions can also bring […]

Taking stock of what we know about Crown rot

Crown rot whiteheads in trial plot. Source Lee Hickey.

Crown rot has long been present in Australian cropping systems, but the introduction of minimum tillage systems, changing rainfall patterns and increased heat events has meant an increase in the severity and prevalence of this disease. This article looks at the key findings from the recent review Crown rot of […]

New wheat stripe rust pathotype detected in eastern Australia

Photo of a wheat variety with effective stripe rust resistance which has no symptoms and on the right, a susceptible variety is covered in stripe rust. Source: Luise Sigel, Agriculture Victoria

A new stripe rust pathotype detected at two separate locations in Victoria during 2017 may have important implications for some wheat varieties grown in eastern Australia. Studies during 2018 will better establish the likely impact of this new pathotype on affected wheat varieties. For most wheat varieties, stripe rust ratings […]

Crop disease updates and subscriptions

Subscribing to crop disease updates

Is reading the latest in field crop disease risk and information important to you?  If so, take a look at the information services below: GRDC Communities Field Crop Diseases Field Crop Diseases curate a newsletter of the latest information on crop diseases and delivers it to your inbox each week, providing you […]

Blackspot Manager for field peas

Blackspot 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 timing […]

Diagnosing disease: there’s an app for that

Crop disease apps

A range of smart phone apps and online tools, developed in conjunction with Australian plant pathologists and grains researchers, are helping farmers to identify crop diseases and construct appropriate management plans with just the push of a button. With smart phone and tablet adoption by farmers now exceeding that of the […]

Cereal disease guides

The Cereal Disease Guides are essential reading to learn about the latest changes to disease resistance. The Guides also summarise what happened in the last season and what diseases are likely in the coming year. The resistance ratings in the guides are an important management tool because they provide a […]