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Researcher(s) |
Helen Burns (NSW DPI) Jason Condon (NSW DPI) Richard Hayes (NSW DPI) Guangdi Li (NSW DPI) Adam Lowrie (NSW DPI) Richard Lowrie (NSW DPI) Sergio Moroni (NSW DPI) Albert Oates (NSW DPI) Graeme Poile (NSW DPI) Andrew Price (NSW DPI) Ehsan Tavakkoli (NSW DPI) Alek Zander (NSW DPI) |
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Year(s) | 2017 |
Contributor | Department of Primary Industries NSW |
Trial location(s) |
Cootamundra, NSW
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Further information | View external link |
1. Manage subsoil acidity through innovative amelioration methods that will increase productivity, profitability and sustainability
2. Study soil processes, such as the changes in soil chemical, physical and biological properties under vigorous soil amelioration techniques over the longer term.
• Deep placement of organic amendments (e.g. lucerne pellets) did not increase soil pH as high as measured in laboratory/glasshouse experiments, but it did reduce exchangeable aluminium (Al) significantly at 10–20 cm and 20–30 cm, indicating that the organic amendment would relieve Al toxicity by combining Al3+ to form insoluble compounds, hence reducing toxicity to plant growth.
• There was a large crop yield response to deep organic amendments in year 1 due to extra nutrients supplied from the lucerne pellets, but no crop response was detected in year 2, partly due to lack of soil moisture during the crop growing season. To date, soil treatments have had little effect on soil water.
• Soil chemical, physical and biological properties will continue to be monitored to understand the soil–plant interactions, the factors driving the differences in crop response to the various treatments, and the residual value of the amendments over the long-term.
Crop rotation
Phase 1 EGA GregoryA wheat
Phase 2 Hyola® 559TT canola
Phase 3 La TrobeA barley
Phase 4 MorganA field pea (2016), PBA SamiraA faba bean (2017)
Lead research organisation | N/A |
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Host research organisation | N/A |
Trial funding source | GRDC DAN00206 |
Trial funding source | DPI NSW |
Related program | N/A |
Acknowledgments |
This experiment was part of the ‘Innovative approaches to managing subsoil acidity in the southern grain region’ project, DAN00206, 2015–20, with joint investment by NSW DPI and GRDC. Our thanks extend to the property manager, Tony Flanery, and land owner, Ian Friend, Dirnaseer, west of Cootamundra, NSW for their ongoing cooperation since 2016. |
Other trial partners | Not specified |
Crop types | Cereal (Grain): Barley Cereal (Grain): Wheat Oilseed: Canola Grain Legume: Faba beans Grain Legume: Field peas |
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Treatment type(s) |
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Trial type | Experimental |
Trial design | Replicated |
Sow date | Not applicable |
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Harvest date | Not applicable |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser |
Starter fertiliser: 75 kg/ha di-ammonium phosphate (DAP) – 14% nitrogen (N), 15% phosphorus (P), 1% sulfur (S) for all crops |
Soil amelioration |
Ripping machine: 3-D Ripper (5 tynes), designed and fabricated by NSW DPI ID Treatment Treatment description 1: No amendment No amendment, representing the ‘do nothing’ approach. 2: Surface liming Lime was applied at 4.0 t/ha, incorporated into 0–10 cm depth, to achieve an average pHCa of 5.5 over 8 years. 3: Deep ripping only Soil was ripped down to 30 cm to quantify the physical effect of ripping. No amendment was applied below 10 cm, but lime was applied at 2.5 t/ha at the surface, incorporated into 0–10 cm depth after plots were ripped, to achieve an average pHCa of 5.0 over 8 years. 4: Deep liming Lime was placed at three depths (surface, 10–20 cm a |
Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2018, available at |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser | Not specified |
Soil amelioration | Not specified |
Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2018, available at |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser | Not specified |
Soil amelioration | Not specified |
Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2018, available at |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser | Not specified |
Soil amelioration | Not specified |
Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2018, available at |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser | Not specified |
Soil amelioration | Not specified |
Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2018, available at |
Rainfall avg gsr (mm) | 347mm |
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Rainfall trial gsr (mm) | 269mm |
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.