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Retained canola seed options- Grading Harder, buying new seed, upping seed rate, mixes or living with

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) Grass Patch, WA
Retained canola seed options- Grading Harder, buying new seed, upping seed rate, mixes or living with locations
Aims

To investigate if retained open pollinated seed which is smaller than commercially available seed is less productive than new seed, and if grading or increasing seed rates can compensate.

Key messages
  • In dry years open-pollinated canola can produce small seed in low rainfall areas. Sowing the small seed at a low seeding rate of 2 kg/ha reduced yield and farmers could benefit by increasing the seeding rate to 4 kg/ha  in the following year or purchasing fresh seed.
  • Grading small seed hard was not as reliable as increasing the seeding rate to 4 kg/ha.
  • F2 hybrid seed produced lower yields than F1 seed unless seeding rates are increased to 4 kg/ha or mixes are made with F1 seed.
  • Hybrid TT was less productive than open pollinated TT canola.
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 Geoff Sanderson and family for hosting the trial and to the Esperance RSU for trial management.  Pam Burgess (DAFWA. Esperance) provided technical assistance to ensure all 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)
  • Crop : Type
  • Sowing : Rate
Trial type Experimental
Trial design Replicated

Grass Patch 2013

Sow rate or Target density 2Kg/ha and 4Kg/ha
Sow date 18 April 2013
Harvest date Not specified
Plot size Not specified
Plot replication 3
Fertiliser

Fertiliser (kg/ha): 99 kg/ha of Allstar at seeding (13.1%N, 14.8%P, 15%S, 0.1% Cu, 0.2% Zn, 7ppm Mo, 0.02% Mn), 120 kg/ha of Muriate of Potash and 400 kg/ha of gypsum (17% Ca, 14% S) topdressed over whole site 4 weeks after seeding, 145 L/ha of UAN (32%N) June 3.
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
Grass Patch, WA Loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Grass Patch, WA Sodosol
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 Grass Patch WA
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Climate

Grass Patch WA 2013

Observed climate information

Rainfall avg gsr (mm) 224mm

Derived climate information

Grass Patch WA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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 11:59am AEST