Re-thinking Ascochyta blight control strategy in field peas

2016

Research organisatons
Funding source

Trial details

Researcher(s) Jenny Davidson (SARDI)
Leigh Davis (SARDI)
Larn McMurray (SARDI)
Christine Walela (SARDI)
Year(s) 2016
Contributor SARDI Minnipa Agricultural Centre
Trial location(s) Hart Field Site group, SA
Minnipa Agricultural Centre, SA
Re-thinking Ascochyta blight control strategy in field peas locations
Aims

To develop improved AB disease control management strategies through the use of fungicides.

Key messages
  • The recommended field pea industry practice of P-Pickel T® seed treatment and 2 foliar fungicides of Mancozeb failed to significantly reduce disease infection levels or increase grain yield over untreated control treatments under high blackspot disease pressure in 2016.
  • Early disease control applications (four weeks after sowing) were important for reducing initial blackspot infection levels at Minnipa, conversely later spring applications were important at the higher rainfall site of Hart.
  • Over two consecutive years, a yield benefit of at least 15% has been obtained from application of new experimental fungicide actives over the current industry practice treatment of two foliar sprays of mancozeb.
  • Further research is required to understand the interaction in efficacy between fungicides and timing of disease infection, together with the drivers of Ascochyta blight onset and progression in different field pea growing environments.
Lead research organisation South Australian Research and Development Institute
Host research organisation SARDI Minnipa Agricultural Centre
Trial funding source GRDC DAV00150
Related program Southern Pulse Agronomy
Acknowledgments

Funding for this work was provided through GRDC project DAV00150 (Southern Pulse Agronomy) and their support is greatly appreciated. We also acknowledge the support of research colleagues from the SARDI teams at Clare and Minnipa. Much gratitude also goes to the land owners/managers of the different farms where the trial sites were located and to Rob Griffith former Bayer CropScience Pty Ltd for providing Aviator Xpro.


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

Method

Crop type Field peas
Treatment type(s)
  • Fungicide: Type
  • Fungicide: Rate
  • Fungicide: Timing
Trial type
Trial design

Hart Field Site group 2016

Sow rate or Target density Not specified
Sowing machinery Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fungicide Not specified

Minnipa Agricultural Centre 2016

Sow rate or Target density 55 plants/m2
Sowing machinery

six rows sown on 12 inch (30cm) row spacings

Sow date 6 May 2016
Harvest date Not specified
Plot size 10m x 2m
Plot replication 3
Fungicide
  1. Nil = No treatment applied
  2. PPT = P Pickle T® (PPT) - 200 ml/100 kg seed
  3. Chloro = Chlorothalonil - 2 L/ha
  4. Sys = Systiva – 150 ml/100 kg seed
  5. Flu = Fluid injection: Flutriafol – 400 ml/ha
  6. Uni =Fluid injection: Uniform – 400 ml/ha
  7. Avi.Xpro = Aviator Xpro® - 600 ml/ha
  8. Ami.Xtra = Amistar Xtra® - 600 ml/ha
  9. Manc low = Mancozeb – 0.5 kg/ha
  10. Manc Std. = Mancozeb – 2 kg/ha

Treatment*

Seed tmt&

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
Hart Field Site group, SA Not specified
Minnipa Agricultural Centre, SA Clay loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Hart Field Site group, SA Chromosol
Minnipa Agricultural Centre, SA Calcarosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Hart Field Site group SA Minnipa Agricultural Centre SA
2016 582.7mm441.5mm
2015 533.0mm440.3mm
2014 599.9mm499.1mm
2013 576.6mm421.3mm
2012 610.6mm453.1mm
2011 638.3mm481.0mm
2010 633.8mm475.3mm
2009 580.2mm480.8mm
2008 544.3mm396.6mm
2007 603.8mm398.4mm
2006 602.7mm431.4mm
2005 632.8mm399.7mm
2004 587.3mm398.4mm
2003 613.0mm404.4mm
2002 596.9mm393.7mm
2001 639.9mm446.8mm
2000 596.9mm461.1mm
National soil grid Source: CSIRO/TERN
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

Minnipa Agricultural Centre SA 2016


Observed climate information

Rainfall avg ann (mm) 325mm
Rainfall avg gsr (mm) 241mm
Rainfall trial total (mm) 391mm
Rainfall trial gsr (mm) 268mm

Derived climate information

Hart Field Site group SA

Minnipa Agricultural Centre SA

Hart Field Site group SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Minnipa Agricultural Centre 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.



Trial last modified: 08-10-2019 14:37pm AEST