| Researcher(s) |
Ross Brennan |
|---|---|
| Year(s) | 1995 |
| Contributor | Department of Agriculture and Food WA |
| Trial location(s) |
Lake Grace, WA
|
To determine the rates of boron required for maximum grain yield of canola grown on soils of the Lakes area.
Canola was thought to have a high B requirement so a range of sites were selected to determine any response incanola to B applications.
Summary 1994 experiment
Soil extractable B was 0..4 mg/kg.
B decreased seedling density (53 to 38).
B concentration in dry matter (DM) 15 mg/kg B nil; 19 mg B kg for highest B application
B fertiliser decreased the September Dry matter (DM) by 0.48 t/ha; decreased Seed yield by 0.32 t/ha & increased N % in DM (by 0.3%) and N in the seed (0.12% increase).
B had decreased %oil (0.59% decrease in Oil%) & decreased oil yield by 144 kg/ha .
Care needs to be taken on use of borax fertilizer as toxicity was induced in canola and lupin; 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 for the site with 0.40 soil extractable B.
| 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 |
| Acknowledgments |
Boron not required |
| Other trial partners | Not specified |
| Crop type | Oilseed: Canola |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| 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 |
| Fertiliser |
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) |
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.
