Boll Weevil: Detection and Monitoring of Small Populations with In-field Traps12

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Abstract
In-field traps were superior to other techniques for detecting very low populations of Anthonomus grandis Boheman in cotton fields. Five, 10, 15, 20, and 25 infield traps/ha were compared in an isolated cotton field in Arkansas. Only one punctured square and no live weevils were found in hand examinations during the experiment. No weevils or punctured squares were found with an insect collecting machine. A total of 25 overwintered weevils and 71 field generation weevils was captured with in-field traps from May 26-Sept, 7. Twenty-five traps/ha captured the majority of weevils caught during the test.

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