Key timings for fungicide applications to manage Septoria tritici blotch (STB) in wheat in the medium and low rainfall zones of Southern Australia

2022
CC BY 4.0

Research organisaton
Funding source

Trial details

Aims

To observe the effect of fungicide application timing in controlling Septoria tritici blotch in wheat in the MRZ and LRZ of the Southern Australia.

Key messages
  • Fungicide applications demonstrated effective suppression of STB development in all the trials.
  • Fungicides were required to protect grain yield in the MRZ, reduced yield loss by ~35% with two sprays (Z31 and Z39) in susceptible cultivars.
  • High stripe rust pressure at Nullawil, LRZ of Victoria compromised the ability to draw conclusions on the optimal fungicide timing to manage STB in the region.  
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 Agriculture Victoria, South Australian Research and Development Institute (SARDI), Birchip Cropping Group (BCG) and Hart Field Site (HFS) 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)
  • Fungicide: Timing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart (MRZ) 2022

Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30 cm row spacing

Sow date 5 May 2022
Harvest date 25 November 2022
Plot size 1.9m x 10m
Plot replication 6
Plot blocking Ranges
Plot randomisation Randomised Complete Block 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 : Soprano® (Epoxiconazole 500 g/L at the rate of 125 mL/ha)

Longerenong (MRZ) 2022

Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30 cm row spacing.

Sow date 28 April 2022
Harvest date 17 December 2022
Plot size 1.9m x 10m
Plot replication 6
Plot blocking Ranges
Plot randomisation Randomised Complete Block 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 : Soprano® at Z39 (Epoxiconazole 500 g/L at the rate of 125 mL/ha)

Nullawil (LRZ) 2022

Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30 cm row spacing.

Sow date 5 May 2022
Harvest date 15 December 2022
Plot size 2m x 12m
Plot replication 6
Plot blocking Ranges
Plot randomisation Randomised Complete Block 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 : Soprano® (Epoxiconazole 500 g/L at the rate of 125 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
Hart (MRZ), SA Not specified
Longerenong (MRZ), VIC Not specified
Nullawil (LRZ), VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Hart (MRZ), SA Chromosol
Longerenong (MRZ), VIC Vertosol
Nullawil (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

Hart (MRZ) SA 2022


Observed climate information

Rainfall avg ann (mm) 406mm
Rainfall avg gsr (mm) 325mm
Rainfall trial total (mm) 489mm
Rainfall trial gsr (mm) 411mm

Longerenong (MRZ) VIC 2022


Observed climate information

Rainfall avg ann (mm) 414mm
Rainfall avg gsr (mm) 286mm
Rainfall trial total (mm) 645mm
Rainfall trial gsr (mm) 547mm

Nullawil (LRZ) VIC 2022


Observed climate information

Rainfall avg ann (mm) 357mm
Rainfall avg gsr (mm) 264mm
Rainfall trial total (mm) 498mm
Rainfall trial gsr (mm) 427mm

Derived climate information

Hart (MRZ) VIC

Longerenong (MRZ) VIC

Nullawil (LRZ) VIC

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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Nullawil (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

2022 trial report



Trial last modified: 11-05-2023 11:08am AEST