The Value of Traps in Japanese Beetle Control

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Abstract
Data collected in a large scale trapping demonstration in Maryland show that 5,338 traps on 6,749 acres of land caught 30% of the beetles produced in the area. Results obtained on individual farms indicate that a much higher efficiency may be expected if one trap to the acre is used and the trap is operated efficiently. Farmers caught from 40% to over 100% of the quantity of beetles produced on their property. Lacking accurate checks, field observations indicate that traps can be profitably used to lessen crop losses.

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