Are early fungicide applications effective for yellow spot and Stagonospora nodorum?

2012

Research organisaton
Funding source

Trial details

Researcher(s) Ciara Beard (DAFWA)
Year(s) 2012
Contributor North East Farming Futures
Trial location(s) Nabawa Road East, WA
Are early fungicide applications effective for yellow spot and Stagonospora nodorum? locations
Aims

To assess the efficacy of foliar fungicide application prior to stem extension for control of yellow spot or stagonospora nodorum in wheat in low rainfall zones.

Key messages

Initially there was disease evident at the site (14% on top 4 leaves at Z22) . The disease was found to predominantly yellow spot, with some septoria nodorum blotch also present (75:25). The disease continued to progress up the canopy and there were significant differences between fungicide treatments when disease was assessed at Z22, Z39 and Z65. There were no statistically significant yield differences, probably due to the dry spring, only approximately 60 mm of rain fell in the 8 weeks after flag leaf emergence. Average yield was 1.1 t/ha. Previous DAFWA research has found that at least 80 mm of rain needs to fall in this period for a Z39 flag leaf fungicide application to be profitable. While there were no significant yield impacts from the fungicide treatments there were significant grain quality results (see Table in attached document). The double spray strategy of applying fungicide at Z22 and Z39 gave the best disease control throughout the season. It, along with the Z39 spray on its own, were the best treatments for high hectolitre weight and lowest screenings.

Lead research organisation North East Farming Futures
Host research organisation N/A
Trial funding source GRDC UB00003
Related program N/A
Acknowledgments
  • Shaun Earl (Mindah)
  • DAFWA
  • Planfarm
  • AHRI
  • CSBP
  • Nufarm
  • GRDC
  • Landmark
  • Thank you to GRDC for funding the trial and to Shaun Earl for hosting the trial.

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

Method

Crop type Wheat
Treatment type(s)
  • Fungicide: Rate
  • Fungicide: Timing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Nabawa Road East 2012

Sow rate or Target density 80 kg/ha
Sow date 20 May 2012
Harvest date Not specified
Plot size 20m X 5m
Plot replication 4
Fertiliser

Agstar Xtra @ 50 kg/ha at seeding, Urea @ 30 kg/ha down boot.

Herbicide

Velocity 670 mL in July, LV680 @ 800 mL in Early August.

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Protein (%) Screenings (%)
1 Nil 13.1 2.2
2 Prosaro @150mL/ha at Z22 12.8 2.2
3 Prosaro @300mL/ha at Z39 12.8 1.7
4 Prosaro @ 150mL at Z22 and Z39 12.9 1.7

Protein %


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Screenings %


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Nabawa Road East, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Nabawa Road East, WA Tenosol
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 Nabawa Road East WA
2012 129.1mm
2011 188.1mm
2010 123.0mm
2009 145.6mm
2008 174.1mm
2007 120.9mm
2006 136.2mm
2005 147.3mm
2004 140.1mm
2003 144.4mm
2002 135.9mm
2001 121.6mm
2000 174.2mm
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.

Nabawa Road East WA

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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: 25-06-2019 12:21pm AEST