To look at the technology, the resulting productivity increases and the economics of the practice of subsoil manuring.
Key messages
Subsoil manuring resulted in consistent grain yield increases across the network of sites in the HRZ of Victoria. In years with drier finishes, the yield of the commercial control crop was constrained due to water deficits during grain filling, while the subsoil manured crops were able to access additional subsoil water. Thus, these crops were not constrained and significantly higher yields were achieved.
For further results and discussion please see the attached trial report.
Trial results Wheat growth parameters at Derrinallum in 2012
#
Treatment 1
Protein (%)
Grain yield (t/ha)
1
█
Commercial crop
10.6
6.3
2
█
Deep ripped only
11.3
6.9
3
█
Subsoil manuring (20 t/ha
10.6
10.4
4
█
Subsoil manuring (10 t/ha)
11.3
8.8
5
█
Fertiliser nutrients (DAP/Urea)
11.9
7.9
6
█
1/2 Fertiliser + 10 t manure
11.3
8.8
Grain yield t/ha
Protein %
Trial results Wheat growth parameters at Derrinallum in 2011
#
Treatment 1
Protein (%)
Grain yield (t/ha)
1
█
Commercial crop
10.3
5
2
█
Deep ripped only
11
5.5
3
█
Subsoil manuring (20 t/ha
11.6
7.4
4
█
Subsoil manuring (10 t/ha)
10.9
6.9
5
█
Fertiliser nutrients (DAP/Urea)
13
7.3
6
█
1/2 Fertiliser + 10 t manure
11.4
7.1
Grain yield t/ha
Protein %
Trial results Wheat growth parameters at Derrinallum in 2009
#
Treatment 1
Protein (%)
Grain yield (t/ha)
1
█
Commercial crop
11.5
5
2
█
Deep ripped only
11.7
4.5
3
█
Subsoil manuring (20 t/ha
12.9
9.8
4
█
Subsoil manuring (10 t/ha)
12.1
6.8
5
█
Fertiliser nutrients (DAP/Urea)
12.7
6
6
█
1/2 Fertiliser + 10 t manure
12.7
5.7
Grain yield t/ha
Protein %
Trial results Wheat growth parameters at Penhurst in 2009
#
Treatment 1
Protein (%)
Grain yield (t/ha)
1
█
Commercial crop
13.3
4.8
2
█
Deep ripped only
13.3
4.5
3
█
Subsoil manuring (20 t/ha
15.8
7.6
4
█
Subsoil manuring (10 t/ha)
13.6
6.8
5
█
Fertiliser nutrients (DAP/Urea)
15.8
6
6
█
1/2 Fertiliser + 10 t manure
15.7
5.7
Grain yield t/ha
Protein %
Trial results Wheat growth parameters at Penhurst in 2011
#
Treatment 1
Protein (%)
Grain yield (t/ha)
1
█
Commercial crop
9.3
6.8
2
█
Deep ripped only
9.6
7.4
3
█
Subsoil manuring (20 t/ha
10.7
11.3
4
█
Subsoil manuring (10 t/ha)
10
10
5
█
Fertiliser nutrients (DAP/Urea)
10.6
7.7
6
█
1/2 Fertiliser + 10 t manure
10.8
6.8
Grain yield t/ha
Protein %
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.
Derrinallum VIC
Penshurst VIC
Derrinallum VIC
NOTE: Exact trial site locality unknown - Climate data may not be accurate
Penshurst VIC
NOTE: Exact trial site locality unknown - Climate data may not be accurate
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.
