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Small Grain Disease Update (07/23/20)

The IPM scouts were busy last week scouting wheat and barley fields.

The IPM scouts were busy last week scouting wheat and barley fields. The most common foliar diseases detected in wheat were tan spot (primarily in the southwest) and bacterial leaf streak (found in 32% of the fields). Leaf rust was also reported in one field in southeast ND (Figure 1.). The most common foliar diseases in barley were net blotch (Figure 2) and bacterial leaf streak. Reports of Fusarium head blight (FHB) in both wheat and barley are starting to occur, however field incidence and severity has been generally low. As the crop continues to progress, it is important to document fields that have a high level of FHB, as those fields may have elevated levels of deoxynivalenol (vomitoxin). For more information on handling small grain with high levels of DON/VOM, please read NDSU publication PP1302 Deoxynivalenol (DON) in Small Grains.

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Andrew Friskop

Extension Plant Pathology, Cereal Crops

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