Grain sorghum producers should be on alert in coming weeks for armyworms as the crop heads out.

 “The second-generation trap counts showed they were very high,” said Dr. Calvin Trostle, AgriLife Extension agronomist, Lubbock. “Compared to 2011, which was considered a bad year, they were even higher in July.”

Pat Porter, AgriLife Extension entomologist at Lubbock, reports large numbers of both armyworm moths and larvae throughout the region. But the situation requires even more vigilance in late August as sorghum heads mature.

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“The worm damage in the whorl is mostly a cosmetic thing as long as they don’t go down into the head,” Trostle said. “Now we have a lot of headed sorghum in the South Plains and West Texas.”

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