Corn Rootworm Egg Hatch Peaking Around Iowa

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2017-06-12
Authors
Hodgson, Erin
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Integrated Crop Management News
Extension and Experiment Station Publications
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Abstract

Corn rootworm egg hatch in Iowa typically occurs from late May to the middle of June, with an average peak hatching date of June 6 in central Iowa. In 2017, the average hatching date will be about the same time as the 2014-2016 growing seasons. Development is driven by soil temperature and measured by growing degree days. Research suggests about 50 percent of egg hatch occurs between 684-767 accumulated degree days (base 52°F, soil). Most areas in Iowa have reached peak corn rootworm egg hatch or will within a few days (Figure 1).

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Sun Jan 01 00:00:00 UTC 2017
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