| Researcher(s) |
Amanda Cook Brian Dzoma Daniel Huberli Marina Mudge Karyn Reeves Ian Richter Craig Standley Nigel Wilhelm |
|---|---|
| Year(s) | 2022 - 2023 |
| Contributor | SARDI Minnipa Agricultural Centre |
| Trial location(s) |
Poochera, SA
Warramboo, SA |
The aim of the current GRDC investment ‘Epidemiology and management of Rhizoctonia in low and medium rainfall zones’ (DAW2206-006RTX) is to examine innovative management strategies for rhizoctonia management in low and medium rainfall zones, by exploring new actives (chemicals and biologicals) that can reduce rhizoctonia infection, applied either pre-sowing or in-crop, and investigating the potential of different practices (e.g. soil amelioration and deeper sowing with long coleoptile varieties, and plant fumigants) to reduce the impact of rhizoctonia.
Poochera 2023:
Poochera 2022:
Despite no reduction in rhizoctonia disease at eight weeks, the application of Uniform® fungicide at seeding increased
barley grain yield by 0.26 t/ha, possibly due to lower foliar disease or by protecting the crown roots from rhizoctonia later in the season.
There was a yield improvement of 1 t/ha in barley due to 2020 deep rip plus biochar enriched with nutrients, and deep rip with animal manure.
Warramboo 2023:
| Lead research organisation |
Department of Primary Industries and Regional Development WA |
|---|---|
| Host research organisation |
South Australian Research and Development Institute |
| Trial funding source | GRDC DAW2206006RTX |
| Related program | N/A |
| Acknowledgments |
This research was funded by GRDC Epidemiology and management of Rhizoctonia in low and medium rainfall zones (DAW2206-006RTX). Thank you to the landholders for having the field trial on their properties. Thank you to Katrina Brands, Rebbecca Tomney and Cate Scholz for field work and processing samples and Karyn Reeves for undertaking the statistical analysis. |
| Other trial partners | Not specified |
| Crop types | Cereal (Grain): Barley Grain Legume: Field peas Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow rate or Target density | 60 kg/ha |
|---|---|
| Sowing machinery |
The trial was sown with a DBS seeder using ribbon seeding boots |
| Sow date | 13 May 2022 |
| Harvest date | Not specified |
| Trial design method | RCBD Randomised Complete Block Design |
| Plot size | 30m x 2m |
| Plot replication | 3 |
| Plot randomisation | Y |
| Fertiliser |
Starter fertiliser: DAP @ 50 kg/ha |
| Herbicide |
The trial was treated with a knockdown and soil-active herbicides immediately prior to seeding and subsequent weeds controlled with lntervix® mid-season. |
| Fungicide |
In 2022, the fungicide Uniform® (active ingredients, azoxystrobin & mefenoxam) was applied to one of the seeding passes in each plot. Uniform® was applied at 400 mU ha with 85 Uha of water as a split application (on top of the seed rows and banded under the seed rows). |
| Sow rate or Target density | 100 kg/ha |
|---|---|
| Sowing machinery |
The trial was sown with a DBS seeder using ribbon seeding boots |
| Sow date | 16 May 2023 |
| Harvest date | Unknown |
| Trial design method | RCBD Randomised Complete Block Design |
| Plot size | 30m x 2m |
| Plot replication | 4 |
| Plot randomisation | Y |
| Fertiliser |
Starter fertiliser: MAP @ 50 kg/ha |
| Herbicide |
The trial was treated with a knockdown and soil-active herbicides immediately prior to seeding. |
| Fungicide |
The fungicide Uniform® (active ingredients, azoxystrobin & mefenoxam) was applied as a split application (on top of the seed rows and banded under the seed rows) to one of the seeding passes in each plot. |
| Sow rate or Target density | 72 kg/ha |
|---|---|
| Sowing machinery |
The replicated trial was sown using a small plot seeder with Harrington knife points and press wheels. |
| Sow date | 31 May 2023 |
| Harvest date | 10 November 2023 |
| Trial design method | RCBD Randomised Complete Block Design |
| Plot size | 48m x 1.6m |
| Plot replication | 3 |
| Plot randomisation | Y |
| Fertiliser |
Starter fertiliser: MAP fertiliser @ 70 kg/ha placed below the seed. 50 kg/ha of urea was spread post crop emergence on 6 July. |
| Herbicide |
A pre-sowing knockdown consisted of 2 Uha Glyphosate, 80 Uha Hammer and Ll700 at 400ml/100L. |
| Fungicide |
The fungicide Uniform® (active ingredients, azoxystrobin & mefenoxam) was applied at 400 mL/ha with 80 L/ha of water as a split application (on top of the seed rows and banded under the seed rows). |
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.
