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Early Observations in Wheat (5/31/18)

Disease reports for small grains have been minimal for much of the state and the primary causes of symptomatic leaf tissue have been abiotic (non-living stressors).

Early Observations in Wheat (5/31/18)

Disease reports for small grains have been minimal for much of the state and the primary causes of symptomatic leaf tissue have been abiotic (non-living stressors). The most common abiotic disorder this year is heat canker (Figure 1). This disorder occurs when young leaf tissue is in contact with high temperature soil at early stages of development. The damage on the leaf will be yellow to white (bleached) and appear constricted.

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Eventually the leaf tip may die-off giving the plant a ragged appearance (Figure 2). No economic implications are associated with heat canker as the small grain plants tend to grow out of it. As always, it is important to diagnose the cause of a lesion before developing a potential management plan.

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Andrew Friskop

Extension Plant Pathology, Cereal Crops

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