Geometric uniformity improves yield of canola and lupin


Research organisatons
Funding source

Trial details

Researcher(s) Martin Harries, Mark Seymour and Stephanie Boyce
Year(s) 2018
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Woorree, WA
Geometric uniformity improves yield of canola and lupin locations

To determine if spacing lupin (Lupinus angustifolius L) and canola (Brassica napus) plants in more uniform geometric patterns can improve yield of these species in the Northern Agricultural Region of Western Australia.

Key messages
  • Canola yield increased up to 17% when plants were spaced evenly apart compared to the spacing observed in commercial paddocks.
  • Lupin yield improved up to 7% when plants were spaced evenly apart, but this was not statistically significant.
  • Moving towards improved plant spacing without achieving perfect spacing is likely to improve yield.
Lead research organisation Department of Agriculture and Food WA
Host research organisation Department of Agriculture and Food WA
Trial funding source GRDC DAW00227
Related program N/A

Thanks to Belinda White and the Geraldton DPIRD Research Support Unit for trial management and measurements and the GRDC for project funding.

Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Oilseed: Canola
Treatment type(s)
  • Sowing: Row spacing
Trial type Experimental
Trial design Replicated
Sow rate or Target density 5,10,20,40 and 80 p/m2
Sowing machinery

Cone Seeder.

Plot size 20m
Plot replication Not specified
Plot blocking Not specified
Plot randomisation Not specified
Paddock history Not specified
Fertiliser Not specified
Herbicide Not specified
Insecticide Not specified
Fungicide Not specified
Pesticide Not specified
Soil amelioration Not specified
Seed treatment Not specified
Inoculant Not specified
Tillage Not specified
Other trial notes 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
Woorree, WA Deep loamy earth
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Woorree, WA 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



Woorree WA 2018

Observed climate information
Rainfall avg gsr (mm) 272mm
Derived climate information
BOM Data source [] 0km proximity to trial site location


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

SILO weather estimates sourced from
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.