The State of New South Wales, including the Department of Regional NSW (“the Department”), does not give any warranty, guarantee or representation about the accuracy, currency or completeness of any information contained in this document (including, without limitation, any information included in the document which was provided by third parties). The State of New South Wales (including the Department) provides this document without assumption of a duty of care to any person. To the fullest extent permitted by law, the State of New South Wales (including the Department) excludes all liability in relation to the information contained in this document or for any injury, expense loss, or damage whatsoever (including without limitation liability for negligence and consequential losses) suffered or incurred by any person acting, or purporting to act in reliance upon any information contained herein. The product trade names in this publication are supplied on the understanding that no preference between equivalent products is intended and that the inclusion of a product name does not imply endorsement by the department over any equivalent product from another manufacturer.
| Researcher(s) | N/A |
|---|---|
| Year(s) | 2019 |
| Contributor | Department of Primary Industries NSW |
| Trial location(s) |
Rand, NSW, NSW
|
| Further information | View external link |
This paper reports 2019 results from a subsoil amelioration experiment aimed at minimising the yield gap on sodic subsoils by treating them with various organic and inorganic amendments in pelletised form
• Deep placement of organic and inorganic amendments increased grain yield by 20–40% for three successive years on a sodic subsoil at Rand.
• Deep placement of organic and inorganic amendments increased root growth and soil water use from the deeper clay layers during the grain filling-stage.
• Improvements in grain yield with deep placement of organic and inorganic amendments were associated with reduced subsoil pH and exchangeable sodium percentage, and increased microbial activity.
Randomised complete block design (RCBD) with four replications
| Lead research organisation | N/A |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC DAV00149 |
| Trial funding source | DPI NSW |
| Related program | N/A |
| Acknowledgments |
This experiment was part of the project ‘Understanding the amelioration processes of the subsoil application of amendments in the Southern Region’, DAV00149, 2015–20. The project is a collaborative partnership between GRDC, Agriculture Victoria, NSW DPI, La Trobe University, University of South Australia, Southern Farming Systems, Primary Industries and Regions South Australia, South Australian Research and Development Institute and University of Tasmania. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow rate or Target density | Seed rate: 4.4 kg/ha |
|---|---|
| Sowing machinery |
Sown with an air seeder spaced at 250 mm using a GPS auto-steer system |
| Sow date | 10 April 2019 |
| Harvest date | 30 October 2019 |
| Plot size | Not specified |
| Plot replication | 4 |
| Plot randomisation | yes |
| Fertiliser |
• 90 kg/ha mono-ammonium phosphate (MAP) (at sowing) • Urea 220 kg/ha (top dressed on 28 June 2019) |
| Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2020, available at |
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.
Plant Breeders’ Rights (PBR)
Some crop varieties used in research trials may be covered by Plant Breeders' Rights (PBR). Users should confirm PBR status of relevant varieties by searching the IP Australia PBR database, http://pericles.ipaustralia.gov.au/pbr_db/ or Variety Central (http://varietycentral.com.au/) and contacting variety owners for further information if required. Where possible, varieties have been listed according to their registered PBR name, although OFT cannot and does not guarantee that the information is accurate or complete.
Note that PBR cover is administered through the Plant Breeders’ Right Act 1994 (