Evaluation of the seed treatment Rancona Dimension as a standalone option for managing crown rot in wheat – 2015

2015

Research organisaton

Funding sources

Trial details

Researcher(s)	Steven Simpfendorfer (NSW DPI)
Year(s)	2015
Contributor	Department of Primary Industries NSW
Trial location(s)	Coonamble, NSW Garah, NSW Gilgandra, NSW Merriwa, NSW Mullaley, NSW North Star, NSW Nyngan, NSW Trangie, NSW Wangarbon, NSW Macalister, QLD Mungindi, QLD Westmar, QLD
Further information	View external link

Evaluation of the seed treatment Rancona Dimension as a standalone option for managing crown rot in wheat – 2015 locations

Aims

To determine the impact of Rancona Dimension on yield loss from CR infection across sites in the northern region.

Crown rot, caused predominantly by the fungus Fusarium pseudograminearum is a significant disease of winter cereal crops in the northern NSW and southern Qld. Rancona® Dimension (ipconazole + metalaxyl) was recently registered in Australia as a fungicidal seed treatment with good activity against cereal bunts and smuts, pythium and suppression of rhizoctonia. Rancona® Dimension is also the first seed treatment to be registered (at 320 mL/100 kg seed) for the suppression of crown rot. Suppression by definition indicates that the seed treatment reduces growth of the pathogen for a set period of time early in the season. This is distinct from control which Rancona® Dimension and other seed treatments provide against bunts and smuts of wheat and barley in that they prevent infection throughout the season. It is recommended by the manufacturer that Rancona® Dimension is used as part of an integrated disease management strategy for crown rot and not as a standalone option. However, growers may still be tempted to try and use Rancona® Dimension under medium to high crown rot risk situations where other management strategies have not sufficiently reduced inoculum levels. This is not uncommon following seasons with low in-crop rainfall which limits the effectiveness of break crops such as chickpea, faba bean, canola and sorghum in decomposing cereal stubble which harbours the crown rot fungus. Under this scenario growers are often forced into sowing another winter cereal within the rotation sequence and may be tempted to resort to a seed treatment as their main option in trying to reduce yield loss associated with crown rot infection. Replicated research therefore appeared warranted to determine the impact of Rancona® Dimension on yield loss from crown rot infection across sites in the northern region. This will hopefully ensure that growers have a realistic expectation of what this seed treatment can achieve if used in isolation of other management strategies.

Key messages

Key messages:

Treating EGA GregoryA seed with Rancona Dimension reduced establishment losses associated with the addition of crown rot inoculum to 7% compared with 26% when no seed treatment was used.
In this instance, Rancona Dimension did not provide a significant or consistent yield benefit in the presence of high levels of crown rot infection across the 12 trial sites in 2015.
Growers should not expect Rancona Dimension to provide a significant and consistent reduction in yield loss from crown rot infection when used as a standalone management strategy.
Growers considering the use of Rancona Dimension should follow the manufacturer’s advice and only consider it as part of an integrated management strategy against crown rot.

Conclusions

Rancona® Dimension is registered in Australia for the suppression of crown rot infection. Rancona® Dimension reduced establishment losses associated with severe early infection, created by the addition of crown rot inoculum to the seed furrow at sowing, to 7% compared to 26% in the absence of a seed treatment. Further research is required to determine if this improvement in establishment is associated with reduced Fusarium seedling blight. It should also be established whether such severe establishment losses are an artefact of the inoculation process used in the trials or occurs naturally in paddocks with high stubble-borne inoculum loads. In a separate larger trial conducted at Tamworth in 2015 in which infected stubble at the surface was the inoculum source Rancona® Dimension did not have a significant impact on the establishment of EGA Gregory compared to the Nil seed treatment (data not presented). Establishment benefits apparent in the 12 trials unfortunately did not translate into any improvement in grain yield. Rancona® Dimension did not provide a significant yield benefit over the use of no seed treatment or the two other commonly used seed treatments examined in this study under high crown rot pressure across 12 sites in 2015.

Although Rancona® Dimension is registered for the suppression of crown rot, with activity against early infection and potential establishment losses evident in this study, growers should not expect this to translate into a significant and consistent reduction in yield loss from crown rot infection when the product is used as a standalone management strategy. Integrated management remains the best strategy to reduce losses to crown rot. Growers may like to consider including Rancona® Dimension (320 mL/100 kg seed) as one additional component in their integrated management of crown rot.

Gilgandra NSW 2015 Barley

Seed treatments evaluated:

Nil seed treatment
Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed
Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed
Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed

Lead research organisation	Department of Primary Industries NSW
Host research organisation	N/A
Trial funding source	GRDC DAN00175
Trial funding source	DPI NSW
Related program	National crown rot epidemiology and management program
Acknowledgments	This research was undertaken as part of project DAN00175: National crown rot epidemiology and management program and is made possible by the significant contributions of growers through both trial co-operation and the support of the GRDC; the author would like to thank them for their continued support. The project is cofunded by the NSW State Government through NSW DPI which is also thanked for its support in fully funding my position, laboratory and other infrastructure costs. Technical assistance provided by Robyn Shapland, Tim O’Brien, Finn Fensbo, Patrick Mortell, Carla Lombardo, Chrystal Fensbo, Kay Warren, Karen Cassin and Rachael Bannister is gratefully acknowledged. Soil-borne pathogen levels were determined using the DNA-based soil test service PreDicta B® provided by the South Australian Research and Development Institute. We are also extremely thankful to NVT operators Peter Matthews (NSW DPI), Douglas Lush (QDAF) and Research A
Other trial partners	Not specified

Download the trial report to view additional trial information

Method

Crop types	Cereal (Grain): Barley Cereal (Grain): Wheat
Treatment type(s)	Crop: Variety
Trial type
Trial design

Coonamble 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Coonamble 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Garah 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Garah 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Gilgandra 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Gilgandra 2015 Barley

Sow date	15 May 2015
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Inoculated versus uninoculated trial design to evaluate the relative impact of seed treatments on the yield impact associated with crown rot infection at each site.
Seed treatment	Seed treatments evaluated: 1. Nil seed treatment 2. Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed 3. Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed 4. Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed
Inoculant	High levels of crown rot infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Merriwa 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Merriwa 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Mullaley 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Mullaley 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

North Star 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

North Star 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Nyngan 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Nyngan 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Trangie 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Trangie 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Wangarbon 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Wangarbon 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Macalister 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Macalister 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Mungindi 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Mungindi 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Westmar 2015 Barley

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

Westmar 2015 Wheat

Sow date	Not specified
Harvest date	Not specified
Plot size	Not specified
Plot replication	Not specified
Plot randomisation	Not specified
Seed treatment	Not specified
Inoculant	Not specified
Other trial notes	Treatments Inoculated versus uninoculated trial design to evaluate the relative seed treatment effects on the yield impact associated with CR infection at each site. High levels of (CR) infection induced in inoculated plots (added CR) by incorporating non-viable durum seed colonised by at least five different isolates of Fp into the seeding furrow (2.0 g/m of row) at sowing. One crown rot susceptible bread wheat variety EGA GregoryA was used across all sites at a target plant population of 100 plants/m2 seed treatments evaluated: Nil seed treatment Rancona® Dimension (ipconazole 25 g/L + metalaxyl 20 g/L) at 320 mL/100 kg seed Dividend M® (difeniconazole 92 g/L + metalaxyl-M 23 g/L) at 260 mL/100 kg seed Jockey Stayer® (fluquinconazole 167 g/L) at 450 mL/100 kg seed. Dividend M® and Jockey Stayer® are NOT registered for the suppression of CR, but were included to represent commonly used wheat seed treatments for bunt and smut control, or early control of stripe rust (a leaf disease), respectively. Including four treatments across each site ensured statistical rigour of yield outcomes.

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
Coonamble, NSW	Not specified
Garah, NSW	Not specified
Gilgandra, NSW	Not specified
Merriwa, NSW	Not specified
Mullaley, NSW	Not specified
North Star, NSW	Not specified
Nyngan, NSW	Not specified
Trangie, NSW	Not specified
Wangarbon, NSW	Not specified
Macalister, QLD	Not specified
Mungindi, QLD	Not specified
Westmar, QLD	Not specified

Derived trial site soil information

Australian Soil Classification Source: ASRIS

Trial site	Soil order
Coonamble, NSW	Vertosol
Garah, NSW	Vertosol
Gilgandra, NSW	Sodosol
Merriwa, NSW	Vertosol
Mullaley, NSW	Ferrosol
North Star, NSW	Sodosol
Nyngan, NSW	Vertosol
Trangie, NSW	Vertosol
Wangarbon, NSW	Kandosol
Macalister, QLD	Vertosol
Mungindi, QLD	Kandosol
Westmar, QLD	Sodosol

Soil Moisture Source: BOM/ANU

Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.

Year	Coonamble NSW	Garah NSW	Gilgandra NSW	Merriwa NSW	Mullaley NSW	North Star NSW	Nyngan NSW	Trangie NSW	Wangarbon NSW	Macalister QLD	Mungindi QLD	Westmar QLD
2015	45.0mm	250.5mm	506.4mm	352.1mm	269.2mm	579.5mm	460.8mm	594.3mm	544.4mm	306.7mm	173.9mm	638.7mm
2014	76.0mm	238.9mm	478.4mm	399.8mm	244.6mm	533.5mm	473.9mm	581.8mm	584.0mm	288.7mm	140.3mm	610.6mm
2013	128.7mm	227.5mm	526.7mm	427.2mm	263.5mm	548.6mm	489.4mm	595.8mm	606.2mm	283.3mm	155.2mm	608.4mm
2012	195.6mm	254.7mm	563.8mm	404.5mm	285.8mm	576.8mm	549.7mm	652.7mm	678.8mm	290.9mm	197.6mm	622.5mm
2011	163.1mm	257.0mm	529.3mm	364.2mm	306.2mm	601.5mm	541.4mm	639.5mm	651.6mm	308.7mm	190.4mm	635.7mm
2010	245.2mm	282.0mm	587.0mm	421.9mm	323.5mm	621.2mm	567.7mm	695.3mm	714.5mm	323.5mm	247.5mm	629.8mm
2009	184.7mm	278.7mm	515.0mm	386.5mm	310.2mm	591.5mm	518.9mm	649.7mm	642.2mm	328.4mm	249.0mm	623.0mm
2008	140.7mm	293.5mm	490.8mm	380.8mm	322.0mm	595.0mm	489.0mm	614.4mm	625.8mm	342.8mm	251.9mm	632.4mm
2007	84.2mm	309.0mm	427.8mm	400.2mm	325.0mm	560.2mm	403.0mm	551.8mm	529.2mm	375.8mm	271.6mm	630.5mm
2006	118.4mm	310.7mm	423.0mm	346.0mm	343.4mm	590.7mm	402.1mm	546.8mm	539.6mm	341.8mm	276.3mm	625.5mm
2005	155.7mm	327.0mm	464.8mm	366.1mm	374.1mm	555.4mm	430.8mm	577.1mm	561.2mm	396.0mm	316.2mm	632.0mm
2004	166.9mm	385.9mm	426.2mm	320.0mm	411.3mm	546.5mm	408.5mm	558.2mm	513.8mm	428.5mm	367.7mm	640.1mm
2003	202.2mm	443.4mm	429.4mm	315.9mm	459.4mm	506.0mm	411.4mm	552.2mm	528.7mm	511.2mm	394.6mm	640.6mm
2002	258.7mm	464.3mm	441.0mm	282.5mm	443.4mm	492.8mm	431.5mm	532.6mm	542.4mm	521.3mm	385.5mm	621.9mm
2001	365.2mm	479.1mm	510.0mm	348.3mm	566.0mm	522.3mm	489.6mm	543.3mm	597.6mm	569.3mm	425.9mm	629.7mm
2000	437.2mm	578.4mm	519.2mm	440.7mm	600.0mm	522.0mm	508.6mm	515.6mm	589.9mm	571.4mm	473.6mm	623.7mm

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

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.

Coonamble QLD

Garah QLD

Gilgandra QLD

Merriwa QLD

Mullaley QLD

North Star QLD

Nyngan QLD

Trangie QLD

Wangarbon QLD