Effect of boron on canola on sandy soils of the Koojan-Yerecoin district


Research organisaton

Trial details

Researcher(s) Mason, MG &, , Brennan RF
Year(s) 1995
Contributor Department of Agriculture and Food WA
Trial location(s) Koojan, WA
Effect of boron on canola  on sandy soils of the Koojan-Yerecoin district locations

To determine the rates of boron required for maximum grain yield of canola grown on  sandy soils  across  seasons.

Key messages
  • Summary of   experiment

  • Soil extractable B was 0.7 mg/kg.

  • Plant density were not effected by B fertiliser (64 plants/m2)
  • Plant B concentrations 22 -27 mg/kg.

  • B fertiliser had no effect on seedling density; September Dry matter (DM) (5.1 t/ha); Seed yield (1.73 t/ha) or N % in DM (3.0 % N) or N in the seed (3.5 %).

  • B had no effect on %oil (44.2) or on oil yield (750 kg/ha).

  • Soil extractable B Hot CaCl2 of 0.7 was adequate

    Care needs to be taken on use of borax fertilizer as toxicity was induced in canola with 0.34 to 1 kg B ha−1(3-10 kg borax ha−1) at sowing depressing seed yield, mostly by decreasing plant density. Rather than making general recommendation for B fertilizer application based on 0.01M CaCl2 soil extractable B, soil and plant analysis should be used to diagnose B deficiency and B fertilizer use limited to calcium borate or foliar borax rather than soil-applied borax on low B sands.
  • Boron not required

Lead research organisation Department of Agriculture and Food WA
Host research organisation Department of Agriculture and Food WA
Related program More Profit from Crop Nutrition

Boron not required

Other trial partners Not specified


Crop type Canola
Treatment type(s)
  • Fertiliser
  • Fertiliser: Type
Trial type Experimental
Trial design Replicated

Koojan 1995

Sow rate or Target density 5.0 kg canola /ha,
Sowing machinery

12 run sowing machine 

Sow date Not specified
Harvest date Not specified
Plot size 1.5m x 25m
Plot replication 3

B at nil, 3 & 5 kg borax /ha.

Experiments involved rates of N fertiliser and timing and other micronutrients 

120 kg Plain super/ha; K basal to soil test value/.

 Copper as Cu sulfate & Zn as Zn oxide as a basal fertiliser

Mo fertiliser (200g/ha)

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
Koojan, WA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Koojan, WA Sodosol
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



Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Koojan WA


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.

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Trial last modified: 21-05-2019 14:08pm AEST