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Researcher(s) |
Luke Gaynor (NSW DPI) Neroli Graham (NSW DPI) Daniel Johnston (NSW DPI) Glenn Morris (NSW DPI) Tony Napier (NSW DPI) Cynthia Podmore (NSW DPI) Deb Slinger (NSW DPI) |
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Year(s) | 2016 |
Contributor | Department of Primary Industries NSW |
Trial location(s) |
Leeton, NSW
|
Further information | View external link |
To evaluate the effects of varietal selection, sowing date, plant population and N management on grain yield, oil content and lodging
• Pioneer® 45Y88 (CL) was the highest yielding variety, averaging over 4 t/ha, with Nuseed Diamond and Pioneer® 45Y25 (RR) also achieving high yields.
• Sowing on 5 April resulted in higher grain yield, reduced lodging and lower oil content compared with sowing on 26 April.
• A plant population of 35–56 plants/m2 resulted in higher grain yields than populations of 18 plants/m2 or 68 plants/m2.
• Applying 200 kg N/ha resulted in higher grain yields than 150 kg N/ha when the soil available nitrogen (N) at sowing was 64 kg/ha. Nitrogen rates above 200 kg N/ha resulted in no extra yield.
• Increasing N application rates above 200 kg N/ha reduced oil concentration.
• Crop lodging increased with plant populations above 35 plants/m2 and N rates above 150 kg N/ha.
Lead research organisation | N/A |
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Host research organisation | N/A |
Trial funding source | GRDC DAN00198 |
Trial funding source | DPI NSW |
Related program | N/A |
Acknowledgments |
The ‘Southern irrigated cereal and canola varieties achieving target yields’ project, DAN00198, 2014–17, with joint investment by GRDC and NSW DPI. The support of Gabby Napier and Michael Hately with field assessments and data collection is greatly acknowledged. |
Other trial partners | Not specified |
Crop type | Oilseed: Canola |
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Treatment type(s) |
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Trial type | Experimental |
Trial design | Randomised,Replicated,Blocked |
Sow rate or Target density | 40 plants per square metre |
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Sow date | varied - as per report |
Harvest date | varied - as per report |
Plot size | Not specified |
Plot replication | 3 |
Plot randomisation | yes |
Fertiliser |
Base fertiliser: SuPerfect 400 kg/ha (32 kg P/ha and 44 kg C/ha) MAP 150 kg/ha (15 kg N/ha and 15 kg P/ha) Topdressed fertiliser: (at visible bud)
|
Fungicide |
Prosaro® (210 g/L prothioconazole and 210 g/L tebuconazole) at 400 mL/ha was applied twice to each experiment at the 6-leaf and 20% flowering stages |
Other trial notes |
This research paper is an extract from the publication Southern NSW Research Results 2017, available at |
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.