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| Researcher(s) |
Helen Burns Jason Condon Richard Hayes Guangdi Li Sergio Moroni Ehsan Tavakkoli |
|---|---|
| Year(s) | 2015 - 2017 |
| Contributor | Department of Primary Industries NSW |
| Trial location(s) |
Holbrook, NSW
|
| Further information | View external link |
A three year deep ripping experiment was conducted on a highly acidic soil to test how effective a range of inorganic soil amendments were to ameliorate subsoil acidity and improve crop growth and yield. A novel product, MgSi (a blend of 70% Doonba dunite and 30% F70 superfine lime), was tested in the field for the first time.
• Deep ripping had an adverse effect on crop establishment and crop yield in the establishment year.
• Both lime and magnesium silicate (a blended product of 70% Doonba dunite and 30% F70 lime) were capable of increasing soil pH and decreasing exchangeable aluminium (Al) at the 20–30 cm depth where the soil amendment was applied.
• Deep placement of gypsum had no effect on soil acidity and did not improve grain yield.
Crop sequence
2015 Hyola® 970CL canola
2016 EGA WedgetailA wheat
2017 EGA WedgetailA wheat
| Lead research organisation |
Department of Primary Industries NSW |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC DAN00206 |
| Trial funding source | DPI NSW |
| Related program | N/A |
| Acknowledgments |
The project ‘Innovative approaches to managing subsoil acidity in the southern grain region’, DAN00206, 2015–20, is a joint investment by NSW DPI and GRDC. MgSi product was sourced from PW English & Associates P/L at Armidale NSW. Richard Lowrie, Adam Lowrie, Graeme Poile, Albert Oates, Binbin Xu, Andrew Price and Yan Jia (NSW DPI, Wagga Wagga), Alek Zander, Matt Dunn and Kerry Schirmer (Charles Sturt University) provided quality technical support. Our thanks extend to land owner Tony Geddes for his ongoing cooperation during the experiment. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| 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 |
| Sow date | Not applicable |
|---|---|
| Harvest date | Not applicable |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
Fertiliser at sowing: 60 kg/ha mono-ammonium phosphate (MAP) – 11% nitrogen (N), Top-dressing fertiliser (urea): 2015 (130 kg N/ha)
|
| Soil amelioration |
There were nine treatments (Table 1) with four treatment contrasts: • Surface vs. deep application • Lime vs. MgSi (blend with 30% of lime) vs. gypsum • Surface application of urea vs calcium nitrate [Ca(NO3)2] under deep ripping • Deep liming with ripping width of 50 cm vs. 80 cm. |
| Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2018, available at |
| Rainfall trial total (mm) | 590mm |
|---|---|
| Rainfall trial gsr (mm) | 337mm |
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.
