HYC Disease Management Germplasm Interaction

2021

Research organisaton
Funding source

Trial details

Researcher(s) Nick Poole
Darcy Warren
Year(s) 2021
Contributor Field Applied Research (FAR) Australia
Trial location(s) Hagley, TAS
HYC Disease Management Germplasm Interaction locations
Aims

To develop profitable and sustainable approaches to disease management in HRZ wheat.


Individual objectives specific to the trial were:
- Monitor the effectiveness of flutriafol in furrow for early disease control in wheat.
- To evaluate whether newer germplasm or new fungicide chemistry allows a reduction in the number of fungicide applications whilst increasing profitability (note: reducing the number of fungicides is seen as a key measure for slowing down resistance development in cropping systems).
- Examine whether there is germplasm (varieties tested) that has sufficient early season disease resistance to replace the need for the Timing 1 (T1) spray applied at GS31-32.
- To determine the cost benefit ratio of fungicide application in HRZ regions of differentseason lengths.

Key messages

 Yields of 14t/ha and above were achieved with three varieties of wheat - Big Red, RGT Cesario and RGT Accroc with untreated plots of RGT Cesario and Big Red yielding 13.52 and 13.68t/ha.
 Although the untreated crops of RGT Cesario and Big Red were lower yielding than treated plots there was no statistically significant yield response to fungicides in these varieties with a maximum 0.5t/ha response in Cesario and 0.7t/ha response in Big Red.
 These responses to fungicides compared to the more susceptible RGT Accroc giving a maximum of 3t/ha to fungicide, intermediate susceptibility of Anapurna giving a maximum of 2.57t/ha.
 These larger responses to fungicides were the result of higher infection levels of Septoria tritici blotch (STB) and late leaf rust infection which were far less significant in Cesario and Big Red.
 The response to four units of fungicide in Revenue, the most susceptible cultivar for both STB and leaf rust was almost 4t/ha and the yield penalty for dropping to 2 units of fungicide was a minimum of 0.7t/ha.
 With RGT Cesario the yield increase associated with moving from a single flag spray to 4 units of fungicide was only 0.22t/ha (not significant) valued at $66/ha at $300/t, which was approximately the cost of the extra fungicide units (seed treatment and two foliars) and their application.
 With Big Red two units of fungicides (IDM 2-unit approach – GS31 and GS39) gave a 0.28t/ha advantage (not significant) over one spray at flag leaf (GS39).
 Where leaf rust was more severe than early STB the 2-spray straddle approach of a later first and second spray (GS33 & GS55-59) were more successful than the 2 spray IDM approach which had earlier spray timings GS31 and GS39.

Hagley TAS 2021

Sown: 29 April 2021
Harvested: 20 January 2022 – 4 February 2022
Rotation position: 1st cereal following Poppies
Soil Type: Chromosol

Lead research organisation Field Applied Research (FAR) Australia
Host research organisation N/A
Trial funding source GRDC FAR2004-002SAX
Related program FAR Hyper Yielding Crops 2020-2022
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Variety
  • Fungicide: Rate
  • Fungicide: Timing
  • Fungicide: Type
  • Pest Management: Fungal
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hagley 2021

Sow rate or Target density 180 Seeds/m2
Sow date 29 April 2021
Harvest date 20 January 2022 – 4 February 2022
Plot size Not specified
Plot replication Not specified
Fertiliser

Please see report for treatment details

Fungicide

Please see report for treatment details

Seed treatment Vibrance & Goucho
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
Hagley, TAS Chromosol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Hagley, TAS Chromosol
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.

Hagley TAS

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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: 21-03-2023 12:16pm AEST