Queensland Department of Agriculture and Fisheries
Trial location(s)
Comet River, QLD
Aims
This project is gathering data from these trial sites to ascertain whether a one-off application of either P, K or sulfur (S) placed in these
deeper, more depleted layers can provide a grain yield benefit and whether that benefit can be maintained over several years.
Key messages
1. 20% yield response to deep-placed phosphorus at the highest rate in the third year of production.
2. No significant response to deep-placed potassium.
Lead research organisation
Queensland Department of Agriculture and Fisheries
Host research organisation
N/A
Trial funding source
GRDC UQ00063
Related program
N/A
Acknowledgments
It is greatly appreciated to have the continued support of trial co-operators, by hosting this trial site. This work is funded by the Grains
Research and Development Corporation and the Department of Agriculture and Fisheries under project UQ 00063 Regional soil testing
guidelines for the northern grains region.
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.
Comet River QLD
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.
Trial report and links
2015 trial report
GRDC Final Report
UQ00063
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