Impact of inoculum loads on in crop disease risk from Septoria tritici blotch (STB) in wheat

2023
CC BY 4.0

Research organisation
Funding source

Trial details

Researcher(s) Hari Dadu
Tara Garrard
Grant Hollaway
Julian Taylor
Contact phone 0343443111
Year(s) 2023
Contributor Agriculture Victoria
Trial location(s) Wallup (MRZ), VIC
Related trials
Impact of inoculum loads on in crop disease risk from Septoria tritici blotch (STB) in wheat locations
Aims

To determine the impact of inoculum loads of STB on wheat grain yield and quality.

Key messages

Stubble management was found to be an important strategy to manage STB risk but in-crop disease severity was related to in season rainfall which aids in dispersal of pycnidiospores from lesions.

Lead research organisation Agriculture Victoria
Host research organisation Agriculture Victoria
Trial funding source GRDC DJP2104_004RTX
Related program N/A
Acknowledgments

This research was co-invested by the Victorian Government (Agriculture Victoria) and GRDC through the ‘Epidemiology of Septoria Tritici Blotch in the low and medium rainfall zones of the Southern region to inform IDM strategies’ (DJPR2104_004RTX).

Thanks to Agriculture Victoria’s field crops pathology team Horsham for technical and continued support in trial management. Thanks also to our research collaborators Drs Mark Mclean (Project Platypus), Andrew Milgate (NSW DPI), Julian Taylor (University of Adelaide) and Tara Garrard (SARDI) for their scientific inputs.


Other trial partners Birchip Cropping Group (BCG)
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Method

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

Wallup (MRZ) 2023

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Sow rate or Target density 150 plants/m2
Sowing machinery

Knife points, press wheels, 30cm row spacing 

Sow date 2 May 2023
Harvest date 17 December 2023
Trial design method RCBD Randomised Complete Block Design
Plot size 2m x 12m
Plot replication 6
Psuedoreplication N
Plot blocking Ranges
Plot randomisation Y
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 : Soprano® (Epoxiconazole 500 g/L at the rate of 125 mL/ha) 

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

Hart (MRZ) 2023

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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
Wallup (MRZ), VIC Clay
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Wallup (MRZ), VIC Vertosol

Climate

Wallup (MRZ) VIC 2023


Observed climate information

Rainfall avg ann (mm) 373mm
Rainfall avg gsr (mm) 286mm
Rainfall trial total (mm) 308mm
Rainfall trial gsr (mm) 231mm

Derived climate information

Wallup (MRZ) 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

2023 trial report



Trial last modified: 14-08-2024 10:27am AEST