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Article
Stalk Borers Moving in Southern Iowa
Integrated Crop Management News
Document Type
Article
Publication Date
5-26-2017
Disciplines
Abstract
Tracking degree days is a useful tool to estimate when common stalk borer larvae begin moving into cornfields from their overwintering hosts. Foliar insecticide applications, if needed, are only effective when larvae are migrating and exposed. Start scouting corn for larvae when 1,300-1,400 degree days (base 41°F) have accumulated. Southern Iowa counties reached this important benchmark over the holiday weekend (Figure 1), and therefore scouting for migrating larvae should begin now to make timely treatment decisions. Stalk borer larvae in central and northern Iowa will migrate later in June.
Copyright Owner
Iowa State University
Copyright Date
2017
Language
en
File Format
en
Citation Information
Erin Hodgson. "Stalk Borers Moving in Southern Iowa" (2017) Available at: http://works.bepress.com/erin_hodgson/294/