Integrated disease management options to control rhizoctonia bare-patch in cereals
Hüberli, D., Connor, M., Miyan, S., MacLeod, W., Desbiolles, J., Bogacki, P. and McKay, A. (2013) Integrated disease management options to control rhizoctonia bare-patch in cereals. In: North Mallee Farm Improvement Group Crop Updates 2013, 14 March, Salmon Gums, Western Australia
Rhizoctonia bare-patch (R. solani AG8) is a major problem across WA’s cereal growing regions and is estimated to reduce WA state-wide cereal yields by 1% to 5% annually at a cost of $27M in wheat and barley (Murray and Brennan, 2009, 2010). Until 2013, Australia had only one registered fungicide for use on seed (Dividend®). Now new options are available for use in the current season, including Vibrance® and EverGol Prime®. Current management practices recommended to minimise the impacts of Rhizoctonia bare-patch in WA are combinations of, cultivation with a fungicide seed-dressing and adequate nutrition.
In South Australia it has been shown that canola and other non-grasses can reduce the inoculum level of R. solani following cereals and thus, are effective break crops (Gupta et al., 2012). In WA, benefits from crop rotation have yet to be demonstrated.
Our aims were to determine the efficacy of the new fungicides to control Rhizoctonia in cereals. Also, the effect of rotation and current management options to control R. solani were examined.
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