Management strategies for Septoria tritici blotch (STB) in wheat in the medium and low rainfall zones of Southern Australia: Variety selection

2021
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Hari Dadu
Tara Garrard
Grant Hollaway
Julian Taylor
Contact email hari.dadu@agriculture.vic.gov.au
Contact phone 03 4344 3111
Year(s) 2021
Contributor Agriculture Victoria
Trial location(s) Booleroo (LRZ), SA
Hart (MRZ), SA
Longerenong (MRZ), VIC
Watchupga (LRZ), VIC
Management strategies for Septoria tritici blotch (STB) in wheat in the medium and low rainfall zones of Southern Australia: Variety selection locations
Aims

To evaluate the impact of Septoria tritici blotch on wheat of different resistant ratings and determine yield loss in the MRZ and LRZ of the Southern Australia

Key messages
  • Septoria tritici blotch (STB) severity varied between varieties. The more susceptible the variety the higher was the disease severity.
  • STB reduced grain yield by 8% in susceptible varieties in the Victorian and not the South Australian MRZ or in either LRZ location.
  • The suppression in STB levels in the partially resistant varieties demonstrated avoiding susceptible in these regions would be adequate to manage STB.
Lead research organisation Agriculture Victoria
Host research organisation N/A
Trial funding source GRDC DJP2104_004RTX
Related program N/A
Acknowledgments

This research was co-funded by GRDC, Agriculture Victoria and SARDI through the "Epidemiology of Septoria tritici blotch in the low and medium rainfall zones of Southern Australia to inform IDM strategies (DJP2104_004RTX)". The authors would like to thank Dr Andrew Milgate (NSW DPI) for his scientific input and field teams at AgVic, SARDI, BCG, HFS and UNFS for technical input and continued assistance in trial management. 


Other trial partners South Australian Research and Development Institute (SARDI), Birchip Cropping Group (BCG), Hart Field Site (HFS), Upper North Farming Systems (UNFS), The University of Adelaide
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Variety
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Booleroo (LRZ) 2021

Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30 cm row spacing.

Sow date 29 May 2021
Harvest date 30 May 2021
Plot size 1.9m x 10m
Plot replication 6
Plot blocking Ranges
Plot randomisation Split Plot Design
Fertiliser

MAP and UREA applied to achieve 4 t/ha grain yield.

Fungicide

Seed treatment: Jockey Stayer® (Fluquinconazole 167g/L at the rate of 300 mL/100 Kg seed)

Foliar application at Z31 : Elatus Ace® (Benzovindiflupyr 40g/L + Propiconazole 250 g/L at the rate of 500 mL/ha)

Foliar application at Z39 : Opus 125®  (Epoxiconazole 125 g/L at the rate of 500 mL/ha)

Note: Opus 125® is not registered for Septoria tritici blotch control and is used for trial purpose only

Hart (MRZ) 2021

Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30 cm row spacing

Sow date 1 June 2021
Harvest date 29 November 2021
Plot size 1.9m x 10m
Plot replication 6
Plot blocking Ranges
Plot randomisation Split Plot Design
Fertiliser

MAP and UREA applied to achieve 4 t/ha grain yield.

Fungicide

Seed treatment: Jockey Stayer® (Fluquinconazole 167g/L at the rate of 300 mL/100 Kg seed)

Foliar application at Z31 : Elatus Ace® (Benzovindiflupyr 40g/L + Propiconazole 250 g/L at the rate of 500 mL/ha)

Foliar application at Z39 : Opus 125®  (Epoxiconazole 125 g/L at the rate of 500 mL/ha)

Note: Opus 125® is not registered for Septoria tritici blotch control and is used for trial purpose only

Longerenong (MRZ) 2021

Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30cm row spacing 

Sow date 29 April 2021
Harvest date 21 December 2021
Plot size 1.9m x 10m
Plot replication 6
Plot blocking Ranges
Plot randomisation Split plot Design
Fertiliser

MAP and Urea applied to achieve 4 t/ha grain yield.

Fungicide

Seed treatment : Jockey Stayer® (Fluquinconazole 167g/L at the rate of 300 mL/100 Kg seed)

Foliar application at Z31 : Elatus Ace® (Benzovindiflupyr 40g/L + Propiconazole 250 g/L at the rate of 500 mL/ha)

Foliar application at Z39 : Opus 125®  (Epoxiconazole 125 g/L at the rate of 500 mL/ha)

Note: Opus 125® is not registered for Septoria tritici blotch control and is used for trial purpose only

Watchupga (LRZ) 2021

Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30 cm row spacing

Sow date 7 May 2021
Harvest date 29 November 2021
Plot size 2m x 12m
Plot replication 6
Plot blocking Ranges
Plot randomisation Split Plot Design
Fertiliser

MAP and UREA applied to achieve 4 t/ha grain yield.

Fungicide

Seed treatment : Jockey Stayer® (Fluquinconazole 167g/L at the rate of 300 mL/100 Kg seed)

Foliar application at Z31 : Aviator® Xpro® (Prothioconazole 150 g/L + Bixafen75 g/L at the rate 500 mL/ha)

Foliar application at Z39 : Elatus Ace® (Benzovindiflupyr 40g/L + Propiconazole 250 g/L at the rate of 500 mL/ha)

 

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
Booleroo (LRZ), SA Not specified
Hart (MRZ), SA Not specified
Longerenong (MRZ), VIC Not specified
Watchupga (LRZ), VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Booleroo (LRZ), SA Sodosol
Hart (MRZ), SA Chromosol
Longerenong (MRZ), VIC Vertosol
Watchupga (LRZ), VIC Calcarosol
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

Booleroo (LRZ) SA 2021


Observed climate information

Rainfall avg ann (mm) 391mm
Rainfall avg gsr (mm) 250mm
Rainfall trial total (mm) 334mm
Rainfall trial gsr (mm) 217mm

Hart (MRZ) SA 2021


Observed climate information

Rainfall avg ann (mm) 405mm
Rainfall avg gsr (mm) 268mm
Rainfall trial total (mm) 401mm
Rainfall trial gsr (mm) 232mm

Longerenong (MRZ) VIC 2021


Observed climate information

Rainfall avg ann (mm) 414mm
Rainfall avg gsr (mm) 284mm
Rainfall trial total (mm) 348mm
Rainfall trial gsr (mm) 262mm

Watchupga (LRZ) VIC 2021


Observed climate information

Rainfall avg ann (mm) 346mm
Rainfall avg gsr (mm) 229mm
Rainfall trial total (mm) 291mm
Rainfall trial gsr (mm) 172mm

Derived climate information

Booleroo (LRZ) VIC

Hart (MRZ) VIC

Longerenong (MRZ) VIC

Watchupga (LRZ) VIC

Booleroo (LRZ) VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Hart (MRZ) VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Longerenong (MRZ) VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Watchupga (LRZ) VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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 report and links

2021 trial report



Trial last modified: 06-05-2022 11:13am AEST