Field peas - Ascochyta blight management, MRZ Mid North

2015
CC BY 4.0

Research organisatons
Funding sources

Trial details

Researcher(s) Eric Armstrong (SARDI)
Jason Brand (DEDJTR)
Jenny Davidson (DEDJTR)
Sarah Day (DEDJTR)
Jon Evans (NSW DPI)
Luke Gaynor (SARDI)
Larn McMurray (SARDI)
Karl Moore (SARDI)
Amanda Pearce (DEDJTR)
Russell Pumpa (SARDI)
Mark Richards (SARDI)
Keisha Savage (DEDJTR)
Christine Walela (DEDJTR)
Andrew Ware (DEDJTR)
Year(s) 2015
Contributor Southern Pulse Agronomy
Trial location(s) Pinery, SA
Field peas - Ascochyta blight management, MRZ Mid North locations
Aims

To improve the success of early sown field pea crops through identifying foliar fungicides with higher levels of efficacy than the current foliar fungicide of Mancozeb on Blackspot disease (using PBA Coogee).

Key messages
  • Weather patterns experienced early in 2015 resulted in growers in many districts being advised by DAFWA’s Blackspot Manager Prediction model to delay sowing of field peas in SA. This sowing was often out of alignment with optimal sowing times based on best agronomic practice for some districts.
  • Under high disease risk situations, growers in low rainfall areas may be best suited to choose alternative break crop options to field peas to avoid significant yield losses through delayed sowing or disease infection. If field pea remains the preferred crop it is important that growers consider the current recommended fungicide strategy of PPT and Mancozeb treatments, selecting paddocks with little or no field pea history, avoiding close proximity to previous field pea stubbles, and delaying sowing as long as possible.
  • Several experimental fungicides with greater efficacy than Mancozeb showed improved blackspot control and significant yield increases over the nil and Mancozeb treatments in 2015.
  • Disease progression and grain yield were both reduced by dry and hot spring conditions in early October at all sites in 2015. Further evaluation is warranted in years and environments with more favourable spring conditions. Earlier application timings than the 8 week treatment used in these experiments may also be warranted, along with additional ‘spring’ treatments in longer more favourable seasons.
  • A number of industry support groups have reported the economic benefit of using fungicide in controlling blackspot in field pea. Results in 2015 showed the current fungicide application strategy, using PPT and two Mancozeb applications suppressed blackspot at most sites, but previous yield benefits reported from this treatment were not realised due to the hot and dry spring conditions experienced in 2015.
  • New fungicide actives and formulas being evaluated showed significant increases in efficacy for controlling blackspot compared to untreated plots and those treated with Mancozeb. Furthermore, a significant yield benefit (approx. 15%) were also identified in these treatments this year. Further trials are planned in 2016 to explore these results.
Lead research organisation Department of Economic Development, Jobs, Transport and Resources VIC
Host research organisation N/A
Trial funding source DEDJTRVic
Trial funding source SARDI
Trial funding source GRDC DAV00113
Related program Southern Pulse Agronomy
Acknowledgments

We sincerely want to thank and acknowledge all co-operators with whom we have worked with throughout the season, who have graciously allowed us to conducted trials on their land.

Technical support: 

  • Jason Ellifson Technical Officer, DEDJTR Horsham
  • Keisha Savage Technical Assistant, DEDJTR Horsham
  • Russel Argall Technical Officer, DEDJTR Horsham
  • Mick Brady Technical Officer, DEDJTR Mildura
  • Chris Davies Technical Assitant, DEDJTR Mildura
  • Henk Venter Technical Officer, Clare, SA
  • Cathy Fisher Technical Officer, Clare, SA
  • Lee Davis Technical Officer, Clare, SA
  • John Nairn Technical Officer, Clare, SA
  • Leigh Davis Technical Officer, Minnipa Ag Centre, SA

Other trial partners Pulse Breeding Australia, The University of Adelaide, Pulse Australia, Southern Farming Systems
Download the trial report to view additional trial information

Method

Crop type Field peas
Treatment type(s)
  • Fungicide
  • Fungicide: Type
  • Fungicide: Timing
  • Fungicide: Application
Trial type Experimental
Trial design Blocked

Pinery 2015

Sow rate or Target density 55 plant/m2
Sowing machinery

36cm row spacing

Sow date 1 May 2015
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser

MAP + Zn (2%) @ 90 kg/ha

Fungicide

Mancozeb 800 @ 2kg/ha + chlorothalonil 720 @ 2L/ha fortnightly from 6-8 weeks after emergence (see table below) plus carbendazim (500ml/ha) fortnightly during flowering (Total of 6 applications)

Seed treatment Apron (350 g/L Matalaxyl-M) seeding treatment was applied to all seed to control downy mildew
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
Pinery, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Pinery, SA Chromosol
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 Pinery SA
2015 138.8mm
2014 171.4mm
2013 147.8mm
2012 167.7mm
2011 230.5mm
2010 195.2mm
2009 128.7mm
2008 113.2mm
2007 174.7mm
2006 185.4mm
2005 181.1mm
2004 172.0mm
2003 214.5mm
2002 204.6mm
2001 230.9mm
2000 262.1mm
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

Derived climate information

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

Pinery 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: 25-07-2019 10:30am AEST