Kansas State University

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Extension Entomology

Sorghum Update

–by Dr. Jeff Whitworth

The 1st sugarcane aphids have been detected in Kansas (i.e., Mr. Jeff Seiler, et al., reported finding colonies (see pic) on 30 July in Sumner County). Most sorghum is in the whorl to boot stage throughout south central and north central Kansas and thus this situation needs to be closely monitored throughout the rest of the season. Unfortunately, “headworms” will just be hatching, probably at pretty good infestation levels, about the same time as these sugarcane aphids will probably be trying to colonize. Fortunately, however, there are a pretty good number of beneficial insects which seems to have really helped control the aphids the last couple of years.

Predator eating an aphid (picture by Jeff Seiler)

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