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Article
Watch for Japanese Beetle Emergence
Integrated Crop Management News
Document Type
Article
Publication Date
6-11-2020
Disciplines
Abstract
Several Iowa State University Extension and Outreach Field Agronomists have reported fields with high numbers of grubs this spring. There are a number of grub species in Iowa, including Japanese beetle. With warm temperatures accelerating insect development, expect adult Japanese beetles to begin emergence in southern Iowa counties this weekend (Figure 1). The emergence is about 7-10 days ahead of the last few years. 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.
Copyright Owner
Iowa State University
Copyright Date
2020
Language
en
File Format
application/pdf
Citation Information
Erin W. Hodgson. "Watch for Japanese Beetle Emergence" (2020) Available at: http://works.bepress.com/erin_hodgson/351/