Variable rate nitrogen: making dollars and sense

2011

Research organisaton

Trial details

Researcher(s) N/A
Year(s) 2011
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Variable rate nitrogen: making dollars and sense locations
Aims

To assess the economic benefit of variable rate nitrogen application, when combined with crop sensor information and yield potential zones to build the variable rate application map.

Key messages
  • In 2011 optimised variable rate N applications increased gross margins by $11- $22/ha in two barley crops.
  • In 2012 variable rate N applications increased gross margins by $13-$20/ha in three wheat crops, based on yield response and fertiliser savings.
  • Increases in grain protein of 0.3 – 0.5% have been observed.
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Wheat
Treatment type(s)
  • Fertiliser
  • Fertiliser: Rate
Trial type Precision agriculture
Trial design Not applicable

Hart 2011

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA Chromosol
National soil grid Source
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Site 5, Hart SA 2011


Observed climate information

Rainfall trial gsr (mm) 168mm

Derived climate information

Site 5, Hart SA

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Some data on this site is sourced from the Bureau of Meteorology

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 last modified: 06-06-2019 14:22pm AEST