Southern Illinois Moth and Beetle Trap Count,
This Week's Activity
Ron's August 5th comments:
Although small increases in captures of Japanese beetles (JB) occurred in Sangamon and St. Clair Counties this past week, captures at all other locations continue to decline. That is welcome news. Scouting for possible silk clipping should continue on late pollinating corn.
The second flight of southwestern corn borer continues to be significant along the I-64 portion of the southern part of Illinois. With this timing of the second flight, it is possible that a third flight could occur about the first part of September. Once again, late maturing corn and grain sorghum will be their primary interest for egg laying and feeding.
The fall armyworm flight appears to be reaching a peak at the Sangamon County trap site. Late maturing corn and grain sorghum will also be their preferred feeding sites.
The flight of corn earworm moths continues across the southern part of Illinois. This also indicates the potential for significant feeding on late maturing crops.
The "*" that appears in the Franklin and Sangamon County JB capture columns during the week prior to July 8th is to indicate that due to business travel, the traps at those locations could not be emptied on a daily basis during that week, and they were over-flowing when serviced. Thus, the capture numbers that were entered were not actual totals for the week, but all that we were able to capture.
Following are some helpful web sites for determining insect
development and control recommendations across the southern part
of Illinois:
http://www.ipm.uiuc.edu/bulletin/index.php
http://www.ipm.uiuc.edu/degreedays/index.html
http://www.ipm.uiuc.edu/fieldcrops/corn/insects.html
http://wwwagwx.ca.uky.edu/calculators.html
University
of Kentucky moth trap catch data
University of Missouri Pest Monitoring Network
http://www.ipm.uiuc.edu/fieldcrops/insects/japanese_beetles.pdf
http://www.ca.uky.edu/entomology/entfacts/ef409.asp
http://www.oardc.ohio-state.edu/biocontrol/j_beetle.htm
Until next week.
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