Joel Andrew (Map IQ) Tim Boyes (agVivo) Ty Fulwood (Mount Noddy Farming)
Year(s)
2017 - 2018
Contributor
agVivo
Trial location(s)
Northam, WA
Aims
To assess the impact of deep ripping on wheat yield in a sand over gravel soil type near Northam, WA.
Key messages
Deep ripping provided a 446 kg/ha wheat yield increase in 2017.
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 Ty Fulwood and Tim Boyes who setup the trial. This assessment of the trial and report is funded by the GRDC through the Kwinana West Region Cropping Solution Network.
Trial results Table 1: 2017 Average crop yield for deep ripping and control plots
#
Treatment 1
Grain yield (t/ha)
1
█
Control
4.85
2
█
Deep Rip
5.3
Grain yield t/ha
Trial results Table 2: Average soil strength for rip and control plots
#
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
█
Barrier
2500
-65
14
█
Barrier
2500
-70
15
█
Control
163
-5
16
█
Control
341
-10
17
█
Control
906
-15
18
█
Control
1786
-20
19
█
Control
1954
-25
20
█
Control
2078
-30
21
█
Control
2171
-35
22
█
Control
2216
-40
23
█
Control
2289
-45
24
█
Control
2569
-50
25
█
Control
2610
-55
26
█
Control
2635
-60
27
█
Control
2603
-65
28
█
Control
2612
-70
29
█
Deep Rip
375
-5
30
█
Deep Rip
709
-10
31
█
Deep Rip
922
-15
32
█
Deep Rip
827
-20
33
█
Deep Rip
710
-25
34
█
Deep Rip
1026
-30
35
█
Deep Rip
1089
-35
36
█
Deep Rip
1126
-40
37
█
Deep Rip
1090
-45
38
█
Deep Rip
1329
-50
39
█
Deep Rip
1944
-55
40
█
Deep Rip
2190
-60
41
█
Deep Rip
2167
-65
42
█
Deep Rip
2129
-70
Trial results Table 3: 2018 average crop yield
#
Treatment 1
Grain yield (t/ha)
1
█
Control
3.46
2
█
Deep Ripping
3.8
Grain yield t/ha
Trial results Table 4: The annual benefit for each treatment and cumulative return over the two years
#
Treatment 1
Return on investment compared to control ($/ha)
Net 2-year benefit ($/ha)
Treatment Cost ($/ha)
Net 1-year benefit ($/ha)
1
█
Control
0
0
0
0
2
█
Deep Ripping
198
102
60
156
Net 1-year benefit $/ha
Net 2-year benefit $/ha
Return on investment compared to control $/ha
Treatment Cost $/ha
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.
Northam WA
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.
