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Practices

Stakeholders

Winter wheat crops in Canada from Fusarium Head Blight it through the application of foliar fungicides. Foliar fungicides are sprayed onto the plant itself rather than soaking seeds as is done in a seed treatment. These are also popular, especially for preventing initial FHB infections from the dormant chlamydospores in the soil. These seed treatments are however, not as effective in prevention of the spread of FHB once the crop begins to grow and are most vulnerable (Agriculture and Agri-Food Canada, 2010). A suppressive spraying method is used, meaning crops are sprayed at the point in growth that they are most vulnerable to infection by FHB. Farmers will begin to spray for approximately 8 days after 75% of the heads on the main stem are fully emerged until 50% of them have flowered (Provincial Crop Protection Laboratory, 2015.)

Table 1: Product information regarding foliar fungicides that target FHB in winter wheat (Bayer CropScience, Syngenta, 2015).

Fungicide	Recommended Vol. / Acre (mL)	Cost / Acre	Cost / Bushel
Folicur EW	201	$12.13	?
Prosaro	324	$19.62	?
Fuse	118	?	?

Table 2: Seed treatments that target FHB in winter wheat (Bayer CropScience, Syngenta, 2015).

Seed Treatment	Volume (mL) / 100kg of Seeds
Raxil Pro	?
Cruser-Maxx	325-650
Vibrance XL	180-325

The information provided in Table 1 about FHB combatant fungicides combined with the knowledge of currently used crop spraying techniques (about 8 days in the lifespan of the wheat crop) previously mentioned determines that the average cost to spray winter wheat for FHB is $TBA. This is an approximate cost because different retailers will charge consumers slightly different amounts for the same product. The information in Table 2.

References

1. Agriculture and Agri-Food Canada. 2010. Crop Profile for Winter Wheat in Canada, 2010. Pesticide Risk Reduction Program Pest Management Centre Agriculture and Agri-Food Canada. 1-65.
2. Government of Saskatchewan. 2015. Fusarium Head Blight. Provincial Crop Protection Laboratory. http://www.agriculture.gov.sk.ca/fusarium-head-blight
3. Bayer CropScience Canada. 2015. http://www.cropscience.bayer.ca/Products/Fungicides
4. Syngenta Canada. 2015. http://www.syngentafarm.ca/Productsdetail/Fuse/