The maintenance of a naturally occurring clubroot nursery provided an evaluation site for over 60 canola lines, varieties and cultivars over 4 years in southern Alberta. The nursery site was also used extensively for training and extension activities. When you get served lemons, make lemonade. In...

A set of clubroot surveillance practices was developed for effective monitoring of the occurrence and severity of Plasmodiophora brassicae in commercial fields. Clubroot, we’re watching you. A major focus of research into clubroot disease caused by P. brassicae is surveillance of the geographic spread of...

Dry canola seeds can be safely stored for up to 6 to 8 months in grain bags, but 12% moisture canola should only be stored for less than 5 months. Canola seeds above 12% moisture content should only be stored for 3 to 4 weeks...

Bleach (sodium hypochlorite) was most effective in killing clubroot (Plasmodiophora brassicae) spores at concentrations above 1.7%. Spray Nine was almost as effective, while 5 other products achieved greater than 95% control. Sanitation of equipment, vehicles, scouting tools and footwear is an important part of preventing the...

Research in southern Alberta found that canola fields seeded in April were the most susceptible to cabbage seedpod weevil. A new action threshold of 25 to 40 cabbage seedpod weevils per 10 sweeps at early flowering stage was developed. When cabbage seedpod weevil populations were...

For every 1-unit increase in disease severity rating on a scale of 1 to 5, yield loss in a susceptible variety was 17.2% and pod loss was 13.0%. Disease severity was lower and seed yield was 120% to 128% higher in the moderately resistant to...

Averaged over 6 years from 2010 to 2015, growing canola in rotation with other crops produced 19.4% (9.4 bu/ac) higher yield over continuous canola. Wheat yields were 4.7 bu/ac (7.2%) higher than continuous wheat. When a rotation included pea once every three years, a saving...

Diverse crop rotations had similar net returns to canola-wheat rotations one-half the time and up to $45 per acre more the rest of the time. Adding integrated weed management practices without relying on wild oat herbicides resulted in similar wild oat pressure as canola-wheat rotations....