To identify within paddock variability (subsoil limitations) and its effects on production and recharge.
To identify different paddock ‘zones’ and the effect of rainfall (amount and distribution) on production.
Key messages
EM38 surveys need to be calibrated through soil testing to identify areas with subsoil constraints.
Simulated wheat yields using historical rainfall data demonstrated the effects of soil type and subsoil limitations on potential crop yields and recharge.
Variable rate technology for fertiliser could optimise returns for paddocks with subsoil limitations.
Lead research organisation
N/A
Host research organisation
N/A
Trial funding source
NLP
Related program
N/A
Acknowledgments
This project was funded by the National Landcare Program through the North Central Catchment Management Authority. Landholders David and Ian Smith and Ken Hinkley kindly allowed us access to their paddocks and farm records. CSIRO Sustainable Ecosystem researcher Perry Poulton turned himself inside out to provide modelling support to the project team. Harm van Rees and Anne Jackman of CropFacts were critical to the implementation and completion of the project.
Trial source data and summary not available Check the trial
report PDF for trial results.
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.
Birchip VIC
CAUTION: Trial site locality unknown; Climate data sourced from Birchip Cropping Group office location
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.
