Better prediction and management of Rhizoctonia disease in cereals

2009

Research organisaton
Funding source

Trial details

Researcher(s) Amanda Cook (SARDI), Vadakattu Gupta, Stephanie Diallo (CSIRO), Daniel Smith, Wade Shepperd, Kathy Ophel-Keller, Alan McKay (SARDI) and David Roget (private consultant)
Year(s) 2009
Contributor SARDI Minnipa Agricultural Centre
Trial location(s) Site 1, Streaky Bay, SA
Better prediction and management of Rhizoctonia disease in cereals locations
Aims

To improve the long term control of Rhizoctonia by increasing the understanding of the interactions between disease inoculum and natural soil suppressive activity and to improve the prediction and management of disease.

Key messages
  • Rhizoctonia solani AG8 inoculum levels were reduced over summer and this may be associated with summer rainfall events.
  • Crop rotation does affect Rhizoctonia inoculum levels, i.e. levels were lowest immediately after canola compared to that after wheat.
  • The incidence and severity of Rhizoctonia bare patch disease in cereals depend on the amount of pathogen inoculum, soil microbial community activity and crop/root vigour.
  • Seed treatments did not reduce rhizoctonia levels in 2009 trials undertaken on EP and the Mallee.
  • To reduce risk of yield loss caused by Rhizoctonia:
  1. Control summer weeds to stop build-up of inoculum,
  2. Encourage early seedling vigour, sow early,
  3. Cultivate deep sow shallow (avoid disc seeders).
  • Canola can help reduce inoculum for the following wheat crop.
  • Barley and wheat are the most intolerant crops.
  • Minimise N deficiency at seeding, particularly for cereal on cereal rotations where summer rainfall has been low, by deep banding N and minimising stubble incorporation at seeding.
Lead research organisation SARDI Minnipa Agricultural Centre
Host research organisation N/A
Trial funding source GRDC
Related program Eyre Peninsula Farming Systems
Acknowledgments

Thank you to GRDC for funding this project. Thanks to the Williams and Goosay families for allowing us to have trials on their property.


Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop types Barley
Wheat
Medic
Canola
Treatment type(s)
  • Crop: Type
  • Soil: Preparation
Trial type Experimental
Trial design Randomised,Replicated

Streaky Bay 2009 Barley

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Streaky Bay 2009 Wheat

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Streaky Bay 2009 Medic

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Streaky Bay 2009 Canola

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 1, Streaky Bay, SA Not specified
Derived trial site soil information
National soil grid Source
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Site 1, Streaky Bay SA

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.




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Trial last modified: 03-09-2019 14:30pm AEST