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) 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:
- 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 “at sowing fungicide” and 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, Anapurna and RGT Cesario significantly out yielded all other cultivars at all three levels of fungicide input 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 Catapult giving yield responses of 1.09 and 3.58t/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 (pathotype 239 dominant with 198 pathotype also present) was the main disease in Trojan, RGT Accroc and Catapult. Other cultivars were subject to low levels of both stripe rust and STB disease pressure.
 Only Trojan and Catapult gave significant yield increases to the application of more than one fungicide unit while only Trojan gave a significant yield increase to four units of fungicide (seed treatment and three foliar fungicides).
 The significant interaction observed in grain yields was also apparent in the grain quality (protein, test weights and screenings) and the resulting wheat grade.
 Highest return on investment with fungicide was seen in the spring wheat cultivars Trojan, Beckom and Catapult due to both higher grain yield and better grain quality.

Increasing fungicide input across seven cultivars of wheat produced significant interactions in both grain yield and quality (protein, test weight and screenings) (Tables 1 – 5). The influence of treatment on net margin, cost benefit ratios ($ earnt for $ spent) and gross margins are presented in Tables 6-8. The disease recorded in the trials was principally Septoria tritici blotch (STB), stripe rust
and leaf rust, levels of which are presented.

Wallendbeen NSW 2021

Sown: 20 April 2021
Harvested: 5 January 2022
Rotation position: 1st Cereal after canola 2020
Soil type and management: Red clay loam – Kelly chained over summer
 

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
  • Fertiliser: Type
  • Fungicide: Timing
  • Fungicide: Type
  • Pest Management: Fungal
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Wallendbeen 2021

Sow rate or Target density 180 seeds/m2 (150 plants/m2 target)
Sow date 20 April 2021
Harvest date 5 January 2022
Plot size Not specified
Plot replication Not specified
Fertiliser

Please see report for 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
Wallendbeen, NSW Red 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

2021 trial report



Trial last modified: 21-03-2023 09:40am AEST