HYC Disease Management Germplasm Interaction

2020

Research organisaton
Funding source

Trial details

Researcher(s) Nick Poole
Darcy Warren
Year(s) 2020
Contributor Field Applied Research (FAR) Australia
Trial location(s) Wallendbeen, NSW
HYC Disease Management Germplasm Interaction locations
Aims

To develop profitable and sustainable approaches to disease management in high yielding and HRZ regions.

Individual objectives specific to the trial were:
- Monitor the effectiveness of fluxapyroxad (Systiva) 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 different season lengths.

Key messages

• The feed winter wheats RGT Accroc and Anapurna significantly out yielded all other cultivars at all three levels of disease management and achieved over 10t/ha with fungicide input.
• There was a significant interaction between cultivar and fungicide management with the stripe rust susceptible cultivars Trojan and DS Bennett giving yield responses of 5.27 and 3.07 t/ha to a single flag leaf fungicide compared to less than a 1t/ha with the majority of cultivars.
• Septoria tritici blotch (STB) was the principal disease in untreated crops of Scepter and Beckom, whilst stripe rust was the main disease in Trojan, DS Bennett, Coolah, RGT Accroc and Catapult. Other cultivars were subject to low levels of both stripe rust and STB disease pressure.
• Only Trojan, Catapult, Coolah and DS Bennett gave significant yield increases to the application of four units of fungicide (seed treatment and three foliar fungicides) over a single flag spray.
• It was noted that compared to lower altitude locations stripe rust infection was relatively later at the Wallendbeen, NSW location (540m above sea level).
• Note of caution. At the southern Victorian location at Gnarwarre Trojan was almost completely defoliated in the lower canopy under the one spray regime compared to Wallendbeen and the 1 spray approach was little better than the untreated (both approaches yielding under 3t/ha).
• The significant interaction observed in grain yields was also apparent in the grain quality (test weights and screenings).

Wallendbeen NSW 2020

Rotation position: Canola 2018, Wheat 2019.
Soil type: Clay loam

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
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Wallendbeen 2020

Sow rate or Target density 180 seeds/m2 (150 plants/m2 target)
Sow date 22 April 2020
Harvest date 28 November, 2020 (spring cultivars) & 14 December, 2020 (winter cultivars)
Plot size Not specified
Plot replication Not specified
Fertiliser

Please see trial report for treatment details

Fungicide

Please see trial report for treatment details

Seed treatment As per treatment list
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
Wallendbeen, NSW Clay loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Wallendbeen, NSW Kandosol
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.

Wallendbeen NSW

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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

2020 trial report



Trial last modified: 21-04-2023 12:26pm AEST