Stalk Borer Scouting

Stalk Borer Scouting

Nebraska map showing accumulated GDDs

Degree day accumulations indicate that scouting should begin for stalk borer larvae across most of the corn growing areas of Nebraska this week.

Begin scouting corn when 1,300-1400 DD have accumulated. This corresponds with the beginning of larvae moving out of grassy hosts. Determine the need for treatment when 1,400-1,700 DD have accumulated. For more information on scouting and treatment of common stalk borer in corn, see the May 30 CropWatch article.