Field Crop Diseases

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Tag archive: Western region

Planning for the 2019 season in WA – Sclerotinia management in canola

Conditions in Western Australia during the 2018 growing season were favourable for the development of sclerotinia in canola crops. Sclerotinia apothecia were first observed mid-July in Geraldton and persisted until September in many places. Infection in canola was detected as early as August with the first report being received in […]

New mechanism of fungicide resistance in spot type of net blotch discovered

Fran Lopez-Ruiz CCDM

Fran Lopez-Ruiz from the Centre for Crop and Disease Management (CCDM) explains the recent detections of fungicide resistance to spot form of net blotch in barley and the importance of its management, especially in southern Western Australia. The CCDM has received and analysed multiple samples from barley paddocks which have […]

Which foliar fungicide active ingredients are registered for WA?

WA foliar fungicides registrations

Registrations of foliar fungicides for use in cereals, canola & lupins in Western Australia were updated in April 2018. The information provided details of products with full registration or with permits for use in WA and provides further details on application rates, withholding periods and other instructions, along with how […]

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 […]

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 […]

Latest on Canola disease – 2018 GRDC Update Papers

Canola close up

Keep up with the latest research information on canola diseases including blackleg and sclerotinia. The following papers and key messages were presented at the GRDC Updates across Australia in February and March 2018. Southern region papers Western region papers Read the key messages below and click the paper titles to […]

Crown rot in winter cereals – Western region

West cereal crown rot 2017

*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 […]

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 […]

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 […]

Latest on Cereal disease – 2016 GRDC Update papers

Keep up with the latest research information on cereal diseases including Septoria tritici blotch of wheat, spot and net blotch of barley, rhizoctonia root rot, crown rot and the cereal rusts. The following papers were presented at the GRDC Updates across Australia in February and March 2016. Southern region papers […]