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

2016 - 2018
CC BY 4.0

Research organisation
Funding source
agVivo
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Joel Andrew (Map IQ)
Reece Curwen (‘Tooraweenah Pastoral Co.’)
Nathan Dovey (Stirling to Coast Farmers)
Jeremy Lemon (DPIRD)
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 Cereal (Grain): Barley Oilseed: Canola Forage: Mixed
Treatment type(s)
  • Management systems : Soil engineering
  • Soil Preparation : Tillage
Trial type Demonstration
Trial design Replicated

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 2016 Mixed

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

Stirling 2017 Canola

Sow date Unknown
Harvest date Unknown
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 2017 Mixed

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

Trial results Table 3: Average soil strength for each treatment

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

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

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

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

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
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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 report and links

Project Final Report

2017 trial report

2017 trial report



Trial last modified: 14-12-2022 16:10pm AEST