Field Crop Diseases

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Field Crop Diseases



Reduce resistance risk with good fungicide management

Chemical drums and trailing boom spray in paddock. Source: Agriculture Victoria

Find this video helpful? Leave us some feedback in this 2 minute survey.  Nick Poole, Managing Director at the Foundation for Arable Research (FAR) Australia highlights key considerations for the management of fungicides including reducing the risk of resistance. He stresses the importance of rotating fungicides to reduce the risk […]

Diagnosing plant diseases: What do we ask and why do we ask for it?

Diagnosing a plant disease or other injury is like going to a medical doctor who must ask several questions before making an accurate diagnosis and recommending a treatment. If you withhold information, it can lead to a misdiagnosis. The same goes for crop diseases. Plant pathologists, specifically diagnosticians, are often […]

Blackleg Management Guide

Blackleg lesions on canola leaf

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 management yield loss can be minimised. The blackleg management guide […]

Barley disease yield loss response curves

Trial plots for Barley disease yield loss response curves project.Source: Greg Platz.

Yield loss data is often generated by comparing trial plots with high disease levels and plots with no disease. Yield loss figures are then calculated based upon potential yield loss as a percentage of maximum yield in a susceptible variety. In an on-farm situation, disease pressure is more likely to […]

Protect wheat from Septoria tritici this spring

Septoria tritici with black fruiting bodies pycinidia. Source: Grant Hollaway (Agriculture Victoria)

Septoria tritici blotch is present in wheat crops in the Victoria Wimmera and across the medium and high rainfalls regions of SA. Agronomists and growers are encouraged to monitor their wheat for symptoms, with a view to fungicide control if necessary. This disease was common at low levels in the […]

Top 3 diseases to watch for fungicide resistance

Figure 1. A) Barley net form of net blotch, B) barley powdery mildew and C) Wheat powdery mildew have been highlighted in the 2016 Fungicide Resistance Group sampling report.

Three key fungicide resistance findings from the 2016 growing season remind Australian growers to stay vigilant when it comes to monitoring crop disease. These are findings of the annual sampling report by the Fungicide Resistance Group, a program within the Centre for Crop and Disease Management, co-supported by Curtin University […]

Lupin growers to keep an eye out for Lupin anthracnose

In the eastern Riverina region of NSW in October 2016 lupin anthracnose was detected for the first time in commercial crops. The disease is present in WA and SA but still remains a notifiable exotic disease in NSW and Victoria. Natural hosts of lupin anthracnose are not established in NSW […]

Spot the difference – identifying fungal diseases on canola

This article describes the different symptoms of canola fungal diseases blackleg, white leaf spot, downy mildew and alternaria leaf spot. Blackleg Blackleg, caused by the fungus Leptosphaeria maculans, is the most serious disease of canola in Australia. Blackleg lesions are grey, circular spots with black fruiting bodies (pycnidia) forming in the […]