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Grasshoppers Increasing (08/13/20)

Grasshopper damage to wheat and other field crops is generally concentrated near field margins.

Grasshopper damage to wheat and other field crops is generally concentrated near field margins. Individual plants will exhibit leaf stripping, beard loss after heading, head clipping, and kernels that have been fed upon or completely destroyed. Row crop producers should be aware of the potential for grasshoppers to move into row crops after small grains have begun to dry down or are harvested.

The NDSU IPM Scouts continue to observed moderate levels throughout North Dakota last week (see IPM map). Continue to scout for grasshoppers until crops are harvested or September. Be aware of PreHarvest Intervals (PHI) if any insecticides are applied near harvest for grasshopper control.

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Janet J. Knodel

Extension Entomologist

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