To report on subsoil manuring: an innovative approach to addressing subsoil problems targeting higher water use efficiency in southern Australia.
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.
Please see attached trial report for further comments.
Lead research organisation
N/A
Host research organisation
N/A
Related program
N/A
Acknowledgments
This paper has been modified and adopted from a paper by Peries et.al., 2013 to the InterDrought (IV) conference in September 2013. The author gratefully acknowledges the contributions of J S Gill and Peter Sale of La Trobe University, who were co-authors of the above paper
Trial results Grain yield and grain protein for treatments at Penshurst from 2009 to 2012
#
Treatment 1
Grain yield (t/ha)
1
█
Commercial crop
2.3
2
█
Deep ripped only
2
3
█
Subsoil Manuring (20 t ha-1)
4.3
4
█
Subsoil Manuring (10 t ha-1)
2.9
5
█
Fertiliser nutrients (DAP/Urea)
1.9
6
█
½ Fertiliser
3.2
7
█
Grain yield t/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.
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.