Field Crop Diseases

Spot the difference – Identifying faba bean diseases

Figure 4 Alternaria dark lesions often have a red-brown margin with concentric rings. SOURCE Frank Henry, Agriculture Victoria and Rohan Kimber, SARDI

This guide is provided to help growers and agronomists identify common faba bean diseases in the field including ascochyta blight, cercospora leaf spot, chocolate spot, alternaria leaf spot and rust. Correct identification is important because different fungicides are used to manage different fungal diseases.
In particular ascochyta blight, chocolate spot and […]

Top five of 2017

Take a look at our five most popular articles and videos from 2017.  
This year we published 35 articles on extensionAUS Field Crop Diseases. These articles covered many disease issues which impact on grains production.
These articles were prepared with, and reviewed by, members of our Community of Practice, Australia’s leading […]

Managing barley loose smut infection

Loose smut in hindmarsh barley

Image source: Andrea Hills, DPIRD
Loose smut was observed in barley crops in Victoria, South Australia and southern New South Wales, particularly Hindmarsh, LaTrobe and Spartacus in 2017. Smut infections were found in crops that had registered seed treatments applied to seed and good coverage achieved. This was because these barley […]

Mungbean powdery mildew management with fungicide

Powdery mildew of mungbean, white fungal growth, on upper leaves of maturing mungbean plant

Figure 1 Powdery mildew of mungbean, white fungal growth, on upper leaves of maturing mungbean plants. Source: Adam Sparks, USQ

Caused by the fungus Podosphaera xanthii, powdery mildew of mungbean  is responsible for yield losses of up to 40% in  susceptible varieties within Australia. Plants are susceptible to the disease from […]

Crown rot in winter cereals – Western region

*Information on crown rot symptoms and management is available in the article Crown rot in winter cereals
During 2015 and 2016 there were low levels of crown rot in many wheat paddocks in the low to medium rainfall zones of WA. The severe level of disease experienced during the 2014 season […]

Crown rot in winter cereals – Southern region

*Information on crown rot symptoms and management is available in the article Crown rot in winter cereals
South Australia
In the main South Australian grain growing areas in 2017, crops generally established late or were sown early but did not receive follow-up rains for 4-8 weeks. In the South East many crops […]

Crown rot in winter cereals – Northern region

*Information on crown rot symptoms and management is available in the article Crown rot in winter cereals
Dry seasonal conditions across much of NSW and Qld cropping areas favoured the expression of crown rot in wheat, barley and durum crops in 2017. Unfortunately, dry conditions during winter even resulted in crown […]

Crown rot in winter cereals

Dry seasonal conditions across much of Australia in 2017 favoured the expression of whiteheads in wheat crops associated with infection by the fungal disease crown rot.
Crown rot infection of seedlings is favoured by a wet start to the season. If the season stays wet and/or mild there may be no […]