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Delaware Wheat: Time to Sign Up for Fusarium Head Blight Prediction Updates

Ernst Undesser
By Nathan Kleczewski, University of Delaware April 19, 2017

Delaware Wheat: Time to Sign Up for Fusarium Head Blight Prediction Updates

Now is the time to ensure that you are signed up for alerts from the Fusarium Head Blight Prediction Center, and you should be checking the map every 2-3 days as plants approach flowering to determine your potential need to apply a fungicide for Fusarium Head Blight suppression. 

The model generates a risk level based primarily off of the preceding rainfall, which determines the amount of potential Fusarium spores that can be produced and spread to flowering wheat heads.  If your wheat is flowering, the risk predicted on that day indicates the potential risk that the crop will suffer from the disease or elevated vomitoxin levels.

The map is generated in the early morning and refreshed around noon, so check your map around lunch time for that day’s risk level. You can also do some predictive forecasting for up to three days, but remember that that is not including current or future rain events. Thus, if pop-up showers occur over night your risk may be greater than previously predicted.

Remember that fungicides for vomitoxin suppression (Prosaro, Caramba, Proline) can be applied from beginning of flowering (approximately 50% of main tillers with anthers extruded) until 5-6 days past the start of flowering without a dropoff in efficacy.

Click the link to access the Fusarium Head Blight Prediction Center.


Source: : http://extension.udel.edu/fieldcropdisease/2017/04/19/time-to-sign-up-for-fusarium-head-blight-prediction-updates/

Ernst Undesser
By Nathan Kleczewski, University of Delaware April 19, 2017