Start Date

30-11-2000 12:00 AM

Description

A variant of western com rootworm that lays eggs in crops other than com was recognized in east-central Illinois as early as 1987 (Steffey et al. 1992), although at the time we believed we were witnessing the phenomenon of extended diapause. Thereafter, the problem with com rootworm larvae damaging com planted after soybean in east-central Illinois and northwestern Indiana increased in frequency and severity during the early 1990s and emerged as a full-blown crisis in 1995. Since then, entomologists throughout the Com Belt have watched warily as the problem "spread" throughout northern Indiana and into southern Michigan and western Ohio. The "spread" of the problem westward and northward in Illinois has occurred relatively slowly. However, we annually add counties to the list of counties "threatened" by the new variant of western corn rootworm.

DOI

https://doi.org/10.31274/icm-180809-687

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Nov 30th, 12:00 AM

Another Corn Rootworm Management Tool Fails: Assessing the Status of Western Corn Rootworms Laying Eggs in Soybeans

A variant of western com rootworm that lays eggs in crops other than com was recognized in east-central Illinois as early as 1987 (Steffey et al. 1992), although at the time we believed we were witnessing the phenomenon of extended diapause. Thereafter, the problem with com rootworm larvae damaging com planted after soybean in east-central Illinois and northwestern Indiana increased in frequency and severity during the early 1990s and emerged as a full-blown crisis in 1995. Since then, entomologists throughout the Com Belt have watched warily as the problem "spread" throughout northern Indiana and into southern Michigan and western Ohio. The "spread" of the problem westward and northward in Illinois has occurred relatively slowly. However, we annually add counties to the list of counties "threatened" by the new variant of western corn rootworm.

 

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