To assess the effects of nitrogen rates on roundup ready canola varieties.
Key messages
Of the varieties planted, the hybrid variety CB Eclipse provided the highest grain yield per hectare of 2.59 t/ha, and achieved the highest grain value/Ha.
The nitrogen treatments showed that providing more than 82N/ha increased grain yield. 108kg/ha N increased yield by approx. 0.3t/ha. The 122kg/ha N rate did not increase grain yield however, suggesting that perhaps this rate was over the top of the Nitrogen response curve. Both the higher N treatments reduced oil content.
Hybrid vigour was evident early in both the Eclipse and 502 plots, but was less noticeable at the end of the season.
Hyola 502RR had a slightly poorer establishment compared to Eclipse and GT61.
Seed Costs are a consideration, with RR hybrids around $28-$30/kg and RR Ops around $16-18/kg.
Lead research organisation
North East Farming Futures
Host research organisation
N/A
Related program
N/A
Acknowledgments
Grant Thompson- Crop Circle Consulting.
Pacific Seeds - Justin Kudnig – Oilseeds Specialist – technical support and presentations on Field Day.
Hamish Maclean - CBH.
Oilseeds of WA- seed supply.
Paul and Nino Messina, David Parradella (Bindu Farms) – technical support, seeding, harvesting etc.
CBH – grains analysis and canola value calculations.
No observed climate data available for this trial. Derived climate data is
determined from trial site location and national weather sources.
Eradu WA
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.
