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Contact: Krishna Ramanujan
National Science Foundation

Evening Primrose in Ithaca, N.Y.

Caption: This is a large natural population of evening primrose (yellow), which is a common plant in eastern North America. Agrawal's team set up 16 identical plots. During each growing season for five years, eight of the plots were treated biweekly with an insecticide; the other eight were controls.

Credit: Anurag Agrawal

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Related news release: Why we need insects -- even 'pesky' ones

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