ICE Canadian canola finished mixed on Wednesday in cautious trading ahead of a key government crop report. Statistics Canada, due to give its final production report on Friday, is expected to bump its canola harvest estimate to 15.6 million tonnes from 14.3 million. January canola gained 10 cents at $471.40 per tonne. Most-active March canola eased 60 cents to $479.50 per tonne. January-March spread traded 8,220 times.