Joel Andrew (Map IQ) Tim Boyes (agVivo) Adam Smith (Ferndale Farming Co.)
Year(s)
2017 - 2018
Contributor
agVivo
Trial location(s)
Beverley, WA
Aims
To assess the impact of deep ripping on crop yield in different soil types and production zones near Beverley, WA.
Key messages
Assessing yield responses on different soil types will guide where future deep ripping work is carried out, with priority given to those soils with the greatest yield increases.
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 Smith family who setup the demonstration sites. This assessment of the trial and report is funded by the GRDC through the Kwinana West Region Cropping Solution Network.
GRDC Project Number: AVP00003-A
Trial results Table 1: 2017 Average crop yield for deep ripping and control plots
#
Treatment 1
Grain yield (t/ha)
1
█
High Control North
3.58
2
█
High Rip North
3.94
3
█
High Control South
3.42
4
█
High Rip South
3.7
5
█
Med Control South
2.25
6
█
Med Rip South
2.2
7
█
Low control North
1.75
8
█
Low Rip North
1.6
9
█
Low Control South
1.4
10
█
Low Rip South
1.68
Grain yield t/ha
Trial results Table 2: Average treatment 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
█
Barrier
2500
-65
14
█
Control
276
-5
15
█
Control
653
-10
16
█
Control
1204
-15
17
█
Control
1719
-20
18
█
Control
2053
-25
19
█
Control
2477
-30
20
█
Control
3352
-35
21
█
Control
3724
-40
22
█
Control
3615
-45
23
█
Control
3359
-50
24
█
Control
3041
-55
25
█
Control
2680
-60
26
█
Control
2680
-65
27
█
Rip
277
-5
28
█
Rip
471
-10
29
█
Rip
644
-15
30
█
Rip
843
-20
31
█
Rip
1010
-25
32
█
Rip
1158
-30
33
█
Rip
1858
-35
34
█
Rip
2528
-40
35
█
Rip
2698
-45
36
█
Rip
2660
-50
37
█
Rip
2656
-55
38
█
Rip
2732
-60
39
█
Rip
2723
-65
Trial results Table 3: 2018 average crop yield for deep rip and control strips
#
Treatment 1
Grain yield (t/ha)
1
█
High Control North
3.99
2
█
High Rip North
4.12
3
█
High Control South
3.55
4
█
High Rip South
4
5
█
Med Control South
3.15
6
█
Med Rip South
3.11
7
█
Low control North
1.43
8
█
Low Rip North
1.56
9
█
Low Control South
0.97
10
█
Low Rip South
1.21
Grain yield t/ha
Trial results Table 4: Economic benefit of ripping
#
Treatment 1
Return on investment compared to control ($/ha)
Net 2-year benefit ($/ha)
Treatment Cost ($/ha)
Net 1-year benefit ($/ha)
1
█
 Control North
-
-
-
-
2
█
High Rip North
70.8
32.5
45
83.3
3
█
High Control South
-
-
-
-
4
█
High Rip South
188
112.5
45
120.5
5
█
Med Control South
-
-
-
-
6
█
Med Rip South
-67
-10
45
-12
7
█
Low control North
-
-
-
-
8
█
Low Rip North
-54.6
32.5
45
-42.1
9
█
Low Control South
-
-
-
-
10
█
Low Rip South
118.4
60
45
103.4
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.
Beverley 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.
