Researcher(s) |
Amanda Cook (SARDI) Ian Richter (SARDI) |
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Year(s) | 2017 |
Contributor | Eyre Peninsula Agricultural Research Foundation |
Trial location(s) |
Lock, SA
|
Related trials |
The GRDC project ‘Maintaining profitable farming systems with retained stubble - upper Eyre Peninsula’ aims to produce sustainable management guidelines to control pests, weeds and diseases while retaining stubble to maintain or improve soil health, and reduce exposure to wind erosion. The major outcome to be achieved is increased knowledge and skills allowing farmers and advisers to improve farm profitability while retaining stubble in farming systems on upper Eyre Peninsula (EP).
One issue EP farmers identified as a problem with stubble retained systems was sowing into non-wetting sands and the resulting uneven and reduced germination. A trial was undertaken from 2013 to 2015 at Murlong (near Lock) to compare crop establishment and performance with time of sowing, sowing rate, row position and sowing depth on a non-wetting sand. The trial site was moved in 2016 to another non-wetting site near Lock due to excessive weed issues.
Neither crop establishment, grain yield nor quality were changed by on-row seeding or by increased seeding rate in 2017, similar to results in 2016.
Crop establishment in the non-wetting soil was poor in 2017.
In 2015, with low moisture at seeding, improved crop establishment from on-row seeding in the non-wetting soil increased crop competition and lowered brome grass weed seed set.
Lead research organisation |
Eyre Peninsula Agricultural Research Foundation |
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Host research organisation |
SARDI Minnipa Agricultural Centre |
Trial funding source | GRDC EPF00001 |
Related program |
Maintaining profitable farming systems with retained stubble |
Acknowledgments |
Thank you to the Polkinghorne family for having this trial on their property, and the Hentschke family in previous seasons. Trial funded by GRDC Maintaining profitable farming systems with retained stubble - upper Eyre Peninsula (EPF00001). Ian Richter, Agricultural Officer. |
Other trial partners | Not specified |
Crop type | Cereal (Grain): Barley |
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Treatment type(s) |
|
Trial type | Experimental |
Trial design | Replicated |
Sow rate or Target density | 50 and 70 kg/ha sowing rate |
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Sowing machinery |
Plot size seeder and harvester |
Sow date | 19 May 2017 |
Harvest date | 21 November 2017 |
Plot size | 12m x 2m |
Plot replication | 3 |
Fertiliser |
Base fertiliser was 18:20:0:0 (DAP) @ 60 kg/ha and a trace element mix of manganese sulphate @ 1.5 kg Mn/ha, zinc sulphate @ 1 kg Zn/ha and copper sulphate @ 0.2 kg Cu/ha was also delivered as banded fluid at seeding. |
Herbicide |
The trial was sprayed with a knockdown of 1.5 L/ha of glyphosate, 1.5 L/ha trifluralin, 80 ml/ha of carfentrazone-ethyl and a wetter, LI700, prior to sowing. |
@T1: | @T2: | @T3: | ||||||||
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# |
Treatment 1
|
Treatment 2
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Screenings (%) | Protein (%) | Grain yield (t/ha) | Establishment plants (plants/m2) | Dry matter (t/ha) | Establishment plants (plants/m2) | Dry matter (t/ha) | Establishment plants (plants/m2) |
1 | █ On-row | █ 50 kg/ha | 5.9 | 12.7 | 0.45 | 4.6 | 0.38 | 9.9 | 1.51 | 24 |
1 | █ On-row | █ 70 kg/ha | 2.9 | 11.5 | 0.44 | 8.6 | 0.35 | 9.6 | 1.08 | 26 |
1 | █ Inter-row | █ 50 kg/ha | 2.5 | 13 | 0.47 | 9.8 | 0.44 | 15.2 | 1.21 | 21 |
1 | █ Inter-row | █ 70 kg/ha | 3.7 | 12.7 | 0.61 | 12.8 | 0.46 | 15 | 1.41 | 23 |
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Rainfall avg ann (mm) | 336mm |
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Rainfall avg gsr (mm) | 250mm |
Rainfall trial total (mm) | 338mm |
Rainfall trial gsr (mm) | 185mm |
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.