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Leafy Spurge Flea Beetles - DD Update (06/30/16)

Accumulated growing degree days (AGDD) from NDAWN (sunflower degree days/growth stage application) indicated that we are at optimal time to collected flea beetles between 1,200 and 1,600 AGDD.

Leafy Spurge Flea Beetles - DD Update

Accumulated growing degree days (AGDD) from NDAWN (sunflower degree days/growth stage application) indicated that we are at optimal time to collected flea beetles between 1,200 and 1,600 AGDD. Currently, North Dakota ranges from 1105 AGDD in the northeast to 1,615 AGDD in the southeast (see map below). After 1,600 AGDD, flea beetles begin to lay eggs and should not be moved or collected.

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Janet J. Knodel

Extension Entomologist

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