Farmer best bet demonstrations for Rhizoctonia management

2013

Research organisaton
Funding source

Trial details

Researcher(s) Amanda Cook, Nigel Wilhelm, Wade Shepperd and Ian Richter (SARDI)
Year(s) 2013
Contributor SARDI Minnipa Agricultural Centre
Trial location(s) Warramboo, SA
Farmer best bet demonstrations for Rhizoctonia management locations
Aims

After an increase in Rhizoctonia research over the last decade, our understanding of this difficult to manage disease has increased substantially. The aim of the project summarised in this article is to use the latest findings from this Rhizoctonia research to demonstrate the collective value of ‘best bet’ strategies in broad acre environments of the upper EP in comparison to current farming practices. This SAGIT funded project has been looking at the impact of 2012 break crops on Rhizoctonia inoculum in 2013 and of crop management on disease expression in the 2013 cereal crop. Farmer fungicide strips were also monitored in 2013.

Key messages

In 2013 the Rhizoctonia best bets demonstrations using rotations were over sown with cereal and showed break crops which are grass free are the best option to lower Rhizoctonia inoculum levels.

Lead research organisation SARDI Minnipa Agricultural Centre
Host research organisation SARDI Minnipa Agricultural Centre
Trial funding source SAGIT S1201
Related program N/A
Acknowledgments

Thanks to the Sampson, Trezona and Pope families for organising and having these demonstrations on their properties. Thanks to Tanja Morgan, Rebecca Tonkin, Ian Ludwig, Carolyne Hilton, Peter Telfer and others involved in helping with the Mallee site.


Other trial partners Not specified
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Method

Crop type Wheat
Treatment type(s)
  • Crop: Type
Trial type Demonstration
Trial design Replicated

Warramboo 2013

Sow rate or Target density 65kg/ha
Sow date 12 May 2013
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser

Fluid fertiliser with 6 units P, 9 units N (dissolved urea) and trace elements (TE) of 1.5 kg/ha each of elemental Mn and Zn

Herbicide

300 ml/ha Diuron, 1 L/ha trifluralin and 1 L/ha glysophate pre-seeding In 2012, paddock was grass free sprayed twice, 400 ml/ha Targa in early July and 300 ml/ha Select in early August. The paddock was sprayed with 500 ml/ha glysophate in September and 500 ml/ha Paraquat in October.

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Download results

Trial results Mace wheat crop growth characteristics at Warramboo in 2013

# Variety
Treatment 1
Protein (%) Soil N (mg/kg) Colwell phosphorus (mg/kg) Rhizoctonia crown root infection (%) Grain yield (t/ha) pH 0-10cm (pH) Rhizoctonia patch score (0-5) Establishment plants (plants/m2)
1 Wheat:Mace Medic 10.9 42 21 86.1 1.2 8.1 0.95 174
2 Wheat:Mace Vetch 10.5 30 17 56.9 1.6 8 0.73 152

Grain yield t/ha


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Colwell phosphorus mg/kg


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Establishment plants plants/m2


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pH 0-10cm pH


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Protein %


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Rhizoctonia crown root infection %


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Rhizoctonia patch score 0-5


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Soil N mg/kg


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Warramboo, SA Calcareous loamy sand
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Warramboo, SA Calcarosol
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

Warramboo SA 2013


Observed climate information

Rainfall trial gsr (mm) 239mm

Derived climate information

Warramboo 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: 08-10-2019 11:19am AEST