Deep ripping demonstration on varying soil types near South Stirling, Western Australia

2016 - 2018
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Reece Curwen (&lsquo, Tooraweenah Pastoral Co.&rsquo, ), Jeremy Lemon (DPIRD), Nathan Dovey (Stirling to Coast Farmers), Joel Andrew (Map IQ)
Year(s) 2016 - 2018
Contributor agVivo
Trial location(s) Stirling, WA
Deep ripping demonstration on varying soil types near South Stirling, Western Australia locations
Aims

To assess the impact of deep ripping on barley and canola yield on sand over gravel and deep sand soil types in the South Stirling area of WA.

Key messages
  • Yield increases from deep ripping ranged from 220 to 750 kg/ha.
  • Deep ripping demonstrations provide a tool to assess possible yield gains across various soil types.
  • Replicated trials are needed to validate the yield increases seen at this demonstration site.
Lead research organisation agVivo
Host research organisation N/A
Trial funding source GRDC AVP00003-A
Related program N/A
Acknowledgments

The research undertaken as part of this project is made possible by the significant contributions of Reece Curwen who setup and hosted the trial with support from Jeremy Lemon of Department of Primary Industries and Regional Development and the GRDC. A further thank you to Jeremy Lemon and Nathan Dovey for processing and access to the trial yield data. This assessment of the trial and report is funded by the GRDC through the Albany Region Cropping Solution Network.
GRDC Project Number: AVP00003-A


Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop types Mixed
Barley
Canola
Treatment type(s)
  • Soil
  • Soil: Preparation
Trial type
Trial design

Stirling 2016 Mixed

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2016 Barley

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2016 Canola

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2017 Mixed

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2017 Canola

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2017 Barley

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2018 Barley

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2018 Canola

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Stirling 2018 Mixed

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1: Average yield for each plot

# Treatment 1
Treatment 2
Grain yield (t/ha)
1 Gravel_2016 Nil 3.51
2 Gravel_2016 Rip_350mm 4.48
3 Gravel_2016 Rip_700 3.6
4 Gravel_2017 Nil 1
5 Gravel_2017 Rip_350mm 1.27
6 Gravel_2017 Rip_700 1.11
7 Sand_2016 Nil 2.75
8 Sand_2016 Rip_350mm 2.82
9 Sand_2016 Rip_700 3.04
10 Sand_2017 Nil 0
11 Sand_2017 Rip_350mm 0
12 Sand_2017 Rip_700 0

Grain yield t/ha


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Trial results Table 2: Soil strength by treatment

# Treatment 1
Soil loosening depth (cm) Soil strength (kPa)
1 Control -5 1345
2 Control -10 2077
3 Control -15 2279
4 Control -20 3031
5 Control -25 3875
6 Control -30 3572
7 Control -35 4201
8 Control -40 4497
9 Control -45 4721
10 Control -50 4895
11 Barrier -5 2500
12 Barrier -10 2500
13 Barrier -15 2500
14 Barrier -20 2500
15 Barrier -25 2500
16 Barrier -30 2500
17 Barrier -35 2500
18 Barrier -40 2500
19 Barrier -45 2500
20 Barrier -50 2500
21 Deep Rip 300mm -5 699
22 Deep Rip 300mm -10 1658
23 Deep Rip 300mm -15 1755
24 Deep Rip 300mm -20 1788
25 Deep Rip 300mm -25 1902
26 Deep Rip 300mm -30 2500
27 Deep Rip 300mm -35 3577
28 Deep Rip 300mm -40 4255
29 Deep Rip 300mm -45 4100
30 Deep Rip 300mm -50 4566
31 Deep Rip 600mm -5 850
32 Deep Rip 600mm -10 1245
33 Deep Rip 600mm -15 1982
34 Deep Rip 600mm -20 1456
35 Deep Rip 600mm -25 1478
36 Deep Rip 600mm -30 1687
37 Deep Rip 600mm -35 1875
38 Deep Rip 600mm -40 2344
39 Deep Rip 600mm -45 2477
40 Deep Rip 600mm -50 2601

Trial results Table 3: Average soil strength for each treatment

# Treatment 1
Soil loosening depth (cm) Soil strength (kPa)
1 Barrier -5 2500
2 Barrier -10 2500
3 Barrier -15 2500
4 Barrier -20 2500
5 Barrier -25 2500
6 Barrier -30 2500
7 Barrier -35 2500
8 Barrier -40 2500
9 Barrier -45 2500
10 Barrier -50 2500
11 Barrier -55 2500
12 Barrier -60 2500
13 Control -5 1345
14 Control -10 2077
15 Control -15 2279
16 Control -20 3031
17 Control -25 3875
18 Control -30 3572
19 Control -35 4201
20 Control -40 4497
21 Control -45 4721
22 Control -50 4895
23 Control -55 4725
24 Control -60 4896
25 Rip_350mm -5 699
26 Rip_350mm -10 1658
27 Rip_350mm -15 1755
28 Rip_350mm -20 1788
29 Rip_350mm -25 1902
30 Rip_350mm -30 2500
31 Rip_350mm -35 3577
32 Rip_350mm -40 4255
33 Rip_350mm -45 4100
34 Rip_350mm -50 4566
35 Rip_350mm -55 4123
36 Rip_350mm -60 4000
37 Rip_700mm -5 850
38 Rip_700mm -10 1245
39 Rip_700mm -15 1982
40 Rip_700mm -20 1456
41 Rip_700mm -25 1478
42 Rip_700mm -30 1687
43 Rip_700mm -35 1875
44 Rip_700mm -40 2344
45 Rip_700mm -45 2477
46 Rip_700mm -50 2601
47 Rip_700mm -55 2799
48 Rip_700mm -60 2677

Trial results Table 4: The bulk density of soil collected at the centre of each plot

# Treatment 1
10cm Bulk Density ((g/cm3)) 50cm Bulk Density (g/cm3) 20cm Bulk Density ((g/cm3)) 30cm Bulk density (g/cm3)
1 Sand Control 1.16 1.71 1.51 1.55
2 Sand 350mm 1.17 1.44 1.62 1.42
3 Sand 700mm 1.17 1.41 1.34 1.5
4 Gravel Control 1.21 N/A 1.47 1.96
5 Gravel 350mm 1 N/A 1.39 1.59
6 Gravel 700mm 1.06 N/A 1.47 1.89

10cm Bulk Density (g/cm3)


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20cm Bulk Density (g/cm3)


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30cm Bulk density g/cm3


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50cm Bulk Density g/cm3


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Trial results Table 5: Economic return of each treatment

# Treatment 1
Net 2-year benefit ($/ha) Net 1-year benefit ($/ha) Return on investment compared to control ($/ha) Treatment Cost ($/ha)
1 Control Gravel 0 0 0 0
2 Rip 350mm Gravel 140 188 278 50
3 Rip 700mm Gravel 55 93 68 80
4 Control Sand 0 0 0 0
5 Rip 350mm Sand - 55 47 40
6 Rip 700mm Sand - 80 68 60

Net 1-year benefit $/ha


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Net 2-year benefit $/ha


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Return on investment compared to control $/ha


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Treatment Cost $/ha


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Observed trial site soil information
Trial site soil testing
Site Depth Type pH EC P K N A OC CAT
Stirling, WA 0 - 10cm 4.80
Stirling, WA 10 - 20cm 4.50
Stirling, WA 20 - 30cm 4.40
Stirling, WA 30 - 40cm 4.50
Stirling, WA 40 - 50cm 5.00
Soil conditions
Trial site Soil texture
Stirling, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Stirling, WA Podosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Stirling WA
2018 217.0mm
2017 227.2mm
2016 210.4mm
2015 200.0mm
2014 201.8mm
2013 225.2mm
2012 218.6mm
2011 209.1mm
2010 187.3mm
2009 203.7mm
2008 228.4mm
2007 205.4mm
2006 177.8mm
2005 210.5mm
2004 194.1mm
2003 206.2mm
2002 203.9mm
2001 197.6mm
2000 210.4mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Stirling WA

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Some data on this site is sourced from the Bureau of Meteorology

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.



Trial last modified: 30-07-2019 18:25pm AEST