Fusarium Resources

On this page you will find the Fusarium Head Blight Risk Maps, the Fusarium Management Guide, the 2019 Guide to Crop Protection PDF, and more useful information about protecting your crops.

Risk Assessment Maps

The FHB risk assessment maps are available from June 1 to July 31 of each year. Please check back in June 2020 for the FHB maps.

PLEASE NOTE: This information is provided for reference purposes, to be used as a general guide to assist growers in their fusarium management strategies. We recommend you search maps by your estimated full head emergence date for the most accurate risk assessment. See below the maps for several resources to help determine timing around fusarium management.

Fusarium Management Guide


Use the Sask Wheat Fusarium Management Guide to help manage the fusarium risk in your crops. Click on the image or title to open the guide.


Click each image below for a larger version and more information about managing fusarium.

Protecting Your Crop


The Guide to Crop Protection, produced by the Saskatchewan Ministry of Agriculture, provides information on the use of herbicides, fungicides and insecticides for control of weeds, plant diseases and insects. This publication is only a guide. Always refer to the product label for application details and precautions. Click on the image or title to open the guide.


Chris Holzapfel from the Indian Head Agricultural Research Foundation speaks about agronomic techniques to help wheat producers prevent lodging and disease and maximize the protein levels and yield of their wheat and durum. Recorded at Think Wheat 2019 in Moose Jaw, Saskatchewan.

Mitchell Japp, Provincial Cereals Specialist with the Saskatchewan Ministry of Agriculture, presents information and strategies for managing diseases and pests that can impact wheat yield. Recorded at the Think Wheat extension meeting in Weyburn, Saskatchewan on March 13, 2018.

Keeping it Clean

Keep it Clean

To help keep marketing options open and maximize return on investment, Cereals Canada recommends growers use practices such as applying a fungicide when there is an elevated FHB risk to manage the disease and to reduce the presence of FHB on seed. It is important to only apply fungicides registered for the crop and to apply according to the instructions on the label.

Understanding the Saskatchewan and Manitoba Fusarium Head Blight Risk Maps

By: Faye Dokken-Bouchard (Plant Disease) and Mitchell Japp (Cereal Crops), Provincial Specialists, Saskatchewan and Pam de Rocquigny, Provincial Cereal Crops Specialist, Manitoba

Both Saskatchewan and Manitoba publish Fusarium Head Blight (FHB) risk maps. At a glance, on a given day the maps may appear to indicate a different risk for growers in each province, which can be concerning for farms along the Manitoba-Saskatchewan border. However, closer examination will reveal minor differences in the models and maps useful for considering FHB risk.

In Saskatchewan, maps are created with models (depending on spring or winter wheat) using temperature and/or relative humidity in the previous five days, plus four days forecast. While in Manitoba, maps are created with a model that uses the hours of precipitation and the hours with temperatures between 15°C and 30°C during the previous seven days. Each province then has its own categorization based on slightly different threshold values – low, moderate, high (and extreme in Manitoba) – based on the output from their respective models.

Models are also constantly validated and fine-tuned for the region where it is relevant. The model that is best for the Fusarium population and conditions in individual provinces in western Canada, or even across the border in the USA, might not be the same. However, crop scientists and pathologists continue to work together to determine how FHB risk maps can be most valuable to all farmers, including those along the border! Producers along the border may have a potential advantage in assessing risk, by using both maps and interpreting which one is most relevant for their farm. And keep in mind risk maps may not perfectly represent a producer’s individual field(s).

Regardless of the model used, no FHB risk map can be taken as a stand-alone tool to make management decisions about FHB as it only takes into account environment. The existence of disease requires three factors: the interaction of a susceptible host, a virulent pathogen, and an environment favourable for disease development. So although a risk map in Saskatchewan or Manitoba may show High risk due to environment, disease risk may be low if the wheat crop is not at the proper stage for infection.

We strongly encourage referring to additional information and consultation with local extension specialists and agrologists to determine if fungicide applications are needed to suppress FHB in your area.

If you have any questions on the FHB Risk maps or FHB management, please contact Manitoba Agriculture or the Saskatchewan Ministry of Agriculture.