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Scab Risk (06/18/15)

Using the NDSU and National scab forecasting models, the greatest risk of scab remains in south central to southwest ND and a few pockets on the eastern side of the state.

Scab Risk

Using the NDSU and National scab forecasting models, the greatest risk of scab remains in south central to southwest ND and a few pockets on the eastern side of the state. Although a majority of the state is considered to be at low risk for scab, the recent moisture and prolonged periods of dew will likely increase the risk of scab. The overwintering structures of the pathogen release the greatest amount of spores under periods of prolonged moisture, warm temperatures and high relative humidity. Survey small grain fields to determine relative growth stages, monitor weather conditions in respective regions, and consider fungicide applications at appropriate growth stages (refer to Crop and Pest Article “Fungicide Choice and Growth Stage Timing for Wheat and Barley” for more information).

Andrew Friskop

Extension Plant Pathology, Cereal Crops

 

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