Friday, September 6, 2013

Outbreak of Sorghum Webworms

Scott Blankenship, Kelly Ag and Chris Parker, Wiregrass Research Center, Headland, AL, report a heavy outbreak of sorghum webworms on grain sorghum in the Wiregrass region of Alabama. As many as 70 to 80 larvae per head have been recorded. Pyrethroid insecticides have given poor control. Other treatment options include: Belt, chlorpyrifos (Lorsban or generics), Lannate, Sevin or Tracer. Growers should note the “days to harvest” restrictions with the various insecticide choices. Webworm picture provided by S. Blankenship.


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