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

Download results

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

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

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

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

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%



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Trial last modified: 25-07-2019 15:13pm AEST