For management of
Sclerotinia sclerotiorum (Sclerotinia stem rot).
Sclerotinia stem rot is the most economically significant disease of canola in Western Canada. Sclerotinia sclerotiorum, the fungal pathogen that causes the disease has staying power in the soil and, with the right combination of weather and crop conditions, can cause heavy infections in all canola growing regions of Western Canada.
Yield loss occurs through:
Smaller and fewer seeds
Premature ripening of infected stems
What is Sclerotinia costing you?
The presence of sclerotinia in your canola crop equates to lost bushels, which equates to lost yield. That's why a preventative approach is so important. And that's why there is such value in an application of Astound.
To calculate the potential yield loss per acre from sclerotinia, multiply the amount of infection (%) by 0.5. In 2010, the average incidence of sclerotinia across the 3 provinces was 22%1.
1. Yield loss due to sclerotinia: 22% infection x 0.5 = 11% yield loss
2. Potential $ yield loss per acre: 11% yield loss x 45* bu/ac x $14**/ac = $69/ac
3. ROI: $69 - $30/ac (Astound SRP $22/ac plus aerial application costs $8/ac)
= $6,240 per quarter section
1Canadian Plant Disease Survey 2011, The Canadian Phytopathological Society.
*To calculate your own ROI, substitute an estimated yield.
**http://canola.ab.ca/canola_prices.aspx (April 2012).