Adult plant resistance and strategic fungicide use for integrated management of cereal rust

2010

Research organisaton
Funding source

Trial details

Researcher(s) Toby Campbell, Bruce Dixon (SFS), Nick Poole and Tracey Wylie (FAR NZ)
Year(s) 2010
Contributor Southern Farming Systems
Trial location(s) Site 6, Lake Bolac, VIC
Adult plant resistance and strategic fungicide use for integrated management of cereal rust locations
Aims
  • To define the expression of adult plant resistance (APR) in a range of wheat cultivars in relation to environmental conditions and growth stage.
  • To develop improved strategies for intervention with fungicides in the control of stripe rust and yellow leaf spot in susceptible and resistant wheat, and the communication of the strategies to industry stakeholder.
  • To develop a model to support growers on the relative merits of applying fungicide for diease control, which takes account of climate, expected yield, economic outlook and genetic inputs including APR.
Key messages
  • The maximum response to fungicide was 17% (0.65 t/ha) with Bolac, 40% (1.24 t/ha) and Yipti and Chara 73% (2.11 t/ha).
  • Impact (flutriafol) was particularly effective at delaying the built up of stripe rust in the Chara which has a susceptible rating to the disease.
  • The effect of flutriafol was less evident in more resistant cultivars or where stem rust ws the principal disease (Yipti).
  • Foliar fungicides at GS32-33 (2nd - 3rd node) gave their greatest benefits where Impact had not been applied, however, its use was still positive with Impact treated crops.
  • A flag leaf spray was the most influential component of the fungicide strategies evaluated irrespecitve of cultivar.
  • The flag leaf spray reduced late stem rust pressure and controlled the earlier infection of stripe rust on the flat leaf itself.
Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC
Related program N/A
Acknowledgments

This is a Sydney University led project funded by GRDC.

We would like to place on record our grateful thanks to the host farmer Mr Neil Vallance.


Other trial partners Not specified
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Method

Crop type Wheat
Treatment type(s)
  • Fungicide: Type
  • Fungicide: Timing
  • Variety: Type
Trial type Experimental
Trial design Unknown

Lake Bolac 2010

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
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Download results

Trial results Table 1

# Variety
Treatment 1
Grain yield (t/ha) Disease incidence (wheat) (% damage)
1 Bolac Untreated; no fungicide 4.3 0
2 Yitpi Untreated; no fungicide 3.07 2.75
3 Chara Untreated; no fungicide 2.89 15.1
4 Bolac Untreated; Fungicide at GS39 4.73 0
5 Yitpi Untreated; Fungicide at GS39 4.33 1.58
6 Chara Untreated; Fungicide at GS39 4.91 0.6
7 Bolac Untreated; Fungicide at GS32+39 5.01 0
8 Yitpi Untreated; Fungicide at GS32+39 4.15 0
9 Chara Untreated; Fungicide at GS32+39 4.58 0.8
10 Bolac Untreated; Fungicide at GS32 4.6 0
11 Yitpi Untreated; Fungicide at GS32 3.86 0.33
12 Chara Untreated; Fungicide at GS32 4.14 9.2
13 Bolac Impact; no fungicide 4.51 0.93
14 Yitpi Impact; no fungicide 3.27 1.65
15 Chara Impact; no fungicide 3.66 15.2
16 Bolac Impact; Fungicide at GS39 4.12 0
17 Yitpi Impact; Fungicide at GS39 4.14 0.05
18 Chara Impact; Fungicide at GS39 4.61 0.9
19 Bolac Impact; Fungicide at GS32+39 5.05 0
20 Yitpi Impact; Fungicide at GS32+39 4.31 0.15
21 Chara Impact; Fungicide at GS32+39 5 0.4
22 Bolac Impact; Fungicide at GS32 4.16 0
23 Yitpi Impact; Fungicide at GS32 3.74 0.01
24 Chara Impact; Fungicide at GS32 4.4 6.1

Grain yield t/ha


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Disease incidence (wheat) % damage


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 6, Lake Bolac, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 6, Lake Bolac, VIC Sodosol
National soil grid Source
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.

Site 6, Lake Bolac VIC

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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.




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Trial last modified: 05-11-2019 10:06am AEST