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Timing of nitrogen in low rainfall canola

2013

Research organisation
Funding source
Department of Agriculture and Food WA
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Mark Seymour
Year(s) 2013
Contributor Department of Agriculture and Food WA
Trial location(s) Dalwallinu, WA
Timing of nitrogen in low rainfall canola locations
Aims

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

Key messages
  • Canola grain yield increased with nitrogen application up to 50 kg N/ha
  • Timing of nitrogen application had no effect on grain yield
  • Canola oil decreased as nitrogen rate increased
  • Applying nitrogen late (12 weeks after sowing) reduced oil%, but only if total N applied was 50 kg/ha
  • Overall gross margins were similar at all rates of applied nitrogen or timing of nitrogen application - due to the decline of oil% as nitrogen increased
  • Hyola 404RR produced higher yields, oil and gross margins than CB Telfer TT - at all rates and timings of nitrogen application.
Lead research organisation Department of Agriculture and Food WA
Host research organisation N/A
Trial funding source GRDC DAW00227
Related program N/A
Acknowledgments

This trial is one of a series conducted throughout WA as part of the GRDC/DAFWA co-funded project “Tactical Break Crop Agronomy in Western Australia”.  Thanks to the Osborne family for hosting the trial and to the Esperance RSU for trial management.  Pam Burgess (DAFWA. Esperance) provided technical assistance to ensure all treatments and measurements occurred in a timely and accurate fashion.
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Oilseed: Canola
Treatment type(s)
  • Fertiliser : Rate
  • Fertiliser : Timing
Trial type Experimental
Trial design Replicated

Dalwallinu 2013

Sow rate or Target density 30 plants/m²
Sow date 9 May 2013
Harvest date Not specified
Plot size Not specified
Plot replication 3
Fertiliser

Basal Fertiliser: 65 kg/ha BigPhos treated with Impact at sowing, 25th June 120 kg/ha Muriate of Potash.
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
Dalwallinu, WA Yellow deep sand
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Dalwallinu, WA Kandosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Dalwallinu WA
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Climate

Dalwallinu WA 2013

Observed climate information

Rainfall avg gsr (mm) 204mm

Derived climate information

Dalwallinu WA

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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 report and links

2013 trial report



Trial last modified: 28-05-2019 12:05pm AEST