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Article
Japanese Beetles Get a Slow Start to 2019
Integrated Crop Management News
Document Type
Article
Publication Date
6-17-2019
Disciplines
Abstract
Several reports from ISU Field Agronomists have indicated Japanese beetles are emerging in southern Iowa. The emergence is about 7-10 days behind the last few years, due to slowly accumulating degree days in 2019. Literature shows Japanese beetle adults need about 1,030 growing degree days (base 50°F) to complete development and will continue emergence until around 2,150 degree days. Based on accumulating degree-day temperatures in 2019, Japanese beetle adults should be active in some areas of southern Iowa this week (Figure 1).
Copyright Owner
Iowa State University
Copyright Date
2019
Language
en
File Format
application/pdf
Citation Information
Erin W. Hodgson. "Japanese Beetles Get a Slow Start to 2019" (2019) Available at: http://works.bepress.com/erin_hodgson/325/