Battling Net Blotch in Barley

GRDC - Author: Linda Thomson, Megan Jones, Azin Moslemi, Ting Tang, Fran Lopez-Ruiz, Mark Gibberd, Lorenzo Covarelli

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

The authors of this paper note in the conclusion: “Two years ago (2018), SFNB fungicide resistance was limited to the Esperance and South Stirling areas, but is now found in more locations in south-west WA. In addition, reduced sensitivity to DMI fungicides is now very common across the southern WA wheatbelt.”. Please access the full paper via the link below if this research interests you.

Battling net blotch in barley – when co-innovation goes to work in WA’s south – resistance detection and in-field solutions

The take home messages from this GRDC funded research are below. Please access the full paper via the link below for methodology, references, acknowledgements and discussion.

  • Results from the first year of a three-year project between CCDM researchers and Western Australian farmers indicates barley net blotch Group 3 fungicide resistance is present in more locations in the south-west of WA than previous reports.
  • Reduced sensitivity to Group 3 fungicides is now very common across the southern WA wheatbelt
  • Working together, growers and researchers are developing an up-to-date snapshot of net blotch issues and solutions to control the disease.

Figure 4. Phenotypic test results of the high rainfall 2019 Farmer Cohort lesion isolations from south-west Western Australian barley samples. There are 210 isolations on the map, with 21 isolations categorized as sensitive, 161 as reduced sensitive and 28 as resistant.

2020 - Australia - GRDC - Author: Linda Thomson, Megan Jones, Azin Moslemi, Ting Tang, Fran Lopez-Ruiz, Mark Gibberd, Lorenzo Covarelli
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