Assessing the yield response to deep ripping near Muradup, Western Australia

2016 - 2018

Research organisaton
Funding source

Trial details

Researcher(s) Simon Zacher (Parahills Farm), Emma Russell (Southern DIRT), Jeremy Lemon (DPIRD) and Joel Andrew (Map IQ)
Year(s) 2016 - 2018
Contributor agVivo
Trial location(s) Muradup, WA
Assessing the yield response to deep ripping near Muradup, Western Australia locations
Aims

To assess the impact of deep ripping on crop yield in a gravelly loam soil type near Muradup, WA.

Key messages
  • Deep ripping provided a 260kg/ha yield increase in barley in 2016,
  • Deeper ripping and the use of inclusion plates did not improve barley yield at this 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 the Zacher family who setup the demonstration sites in conjunction with Southern Dirt and Jeremy Lemon from DPIRD. This assessment of the trial and report is an investment by the GRDC

GRDC Project Number: AVP00003-A  


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

Method

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

Muradup 2016 Barley

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

Muradup 2016 Canola

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

Muradup 2017 Barley

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

Muradup 2017 Canola

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

Muradup 2018 Barley

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

Muradup 2018 Canola

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

Trial results Table 1: Grain Yield x Ripping Method

# Treatment 1
Grain yield (t/ha)
1 Nil 4.1
2 Rip_550mm 4.4
3 Rip_350mm 4.6
4 Rip_350mm+Slot 4.4
5 Heliripper_600mm 3.75
6 OffsetDisk_150mm 4.05
7 Scarifier_250mm 4.4

Trial results Table 2: Grain yield x ripping Method - 2017 Canola

# Treatment 1
Grain yield (t/ha)
1 Nil 1.81
2 Rip_550mm 1.45
3 Rip_350mm 1.62
4 Rip_350mm+Slot 1.52
5 Helirpper_600mm 1.8
6 OffsetDick_150mm 1.17
7 Scarifier 1.2

Grain yield t/ha


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Trial results Table 3: Average Soil Strength

# 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 Nil 500 -5
14 Nil 1500 -10
15 Nil 1800 -15
16 Nil 2100 -20
17 Nil 2200 -25
18 Nil 2600 -30
19 Nil 2650 -35
20 Nil 2600 -40
21 Nil 3000 -45
22 Nil 3250 -50
23 Nil 3500 -55
24 Nil 4100 -60
25 Helirpper_60cm 200 -5
26 Helirpper_60cm 500 -10
27 Helirpper_60cm 800 -15
28 Helirpper_60cm 900 -20
29 Helirpper_60cm 1250 -25
30 Helirpper_60cm 1100 -30
31 Helirpper_60cm 1100 -35
32 Helirpper_60cm 1000 -40
33 Helirpper_60cm 1250 -45
34 Helirpper_60cm 1100 -50
35 Helirpper_60cm 3600 -55
36 Helirpper_60cm 5000 -60

Trial results Table 4: Bulk density of soil from each plot was calculated across the trial area.

# Treatment 1
20cm Bulk Density ((g/cm3)) 30cm Bulk density (g/cm3) 10cm Bulk Density ((g/cm3)) 50cm Bulk Density (g/cm3)
1 Control 1.41 1.5 1.29 1.4
2 DAFWA 350mm 1.36 1.37 1.49 1.51
3 DAFWA 350mm + Slotting 1.3 1.98 1.1 1.72
4 DAFWA 550mm 1.48 1.78 1.13 1.63

Trial results Table 5: Plant biomass as measured by plant cuts from the 2018 wheat crop.

# Treatment 1
Shoot dry weight (g/m2)
1 Control 613
2 DAFWA 350mm 633
3 DAFWA 350mm + Slotting 537
4 DAFWA 550mm 717

Shoot dry weight g/m2


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Trial results Table 6: Economic return of the treatments for the 2016 season.

# Treatment 1
Return on investment compared to control ($/ha) Net 1-year benefit ($/ha) Treatment Cost ($/ha)
1 Control 0 0 0
2 Rip 350mm 54 68 40
3 Rip 350mm + Slotting 108 123 45
4 Rip 550mm 50 68 55
5 Heliripper_600mm -108 -85 70
6 Offset Disk_150mm 93 98 15
7 Scarifier_250mm 64 69 15

Net 1-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
Muradup, WA 0 - 10cm 5.50
Muradup, WA 10 - 20cm 4.80
Muradup, WA 20 - 30cm 4.90
Muradup, WA 30 - 40cm 5.30
Muradup, WA 40 - 50cm 5.60
Soil conditions
Trial site Soil texture
Muradup, WA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Muradup, WA Chromosol
National soil grid Source
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.

Muradup 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.

Event Date Type Effect
Uneven N Application

Uneven N Application

July 2018 Pests 10%