Tag Archives: headworm

Grain Sorghum IPM 5/30/25

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Grain sorghum fields range from bloom to soft dough. We are still finding stink bugs in sorghum fields, average fields have 1 stink bug per head but some are higher.Treatment thresholds are low at bloom and increase as the grain matures.  Some of the fields have leaf footed bugs. These insects can be considered as stink bugs since they feed in a similar manner. Sugarcane aphid numbers were low this week.  Continue to monitor for aphids when scouting for stink bugs and headworms. More Grain Sorghum pest management… Read More →

Headworms in Grain Sorghum

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Grain sorghum maturity ranges from milk to hard dough.  Sorghum fields that have not reached hard dough should be scouted for headworms and stink bugs.  And all sorghum should be scouted for sugarcane/sorghum aphids. We have not found aphids in colonies greater than 20-40 feet in size.  Most of these are being consumed by beneficial insects such as lady beetle, lacewing, and syrphid fly larvae. What was most noticeable this week was worms in younger sorghum fields.  The older sorghum in soft dough or beyond did not seem… Read More →

Midge in Grain Sorghum

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Grain sorghum fields range in maturity from nearing bloom to soft dough and all of these fields need to be scouted frequently. Blooming sorghum is susceptible to sorghum midge and field scouts are finding more midge in the fields this week. Scout sorghum fields 2-3 times per week until past bloom. Start by scouting fields on the south side (downwind) as the midge is a poor flyer and will be found on the field margins first. When you are finding them on field margins, move 150-200 feet into… Read More →

Grain Sorghum Across the Board

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Sorghum fields range in maturity from 4-5 leaf to bloom. This is the result of planting across 5-6 weeks. As a result of this we need to be on the lookout for a wide variety of insect pests. Headed sorghum should be checked for stink bugs and headworms. Scout for these pests using a small bucket, beating the heads into the bucket and count what remains. Follow this link for a brief video demonstrating how to scout sorghum after bloom. LINK My economic threshold for headworms is 1… Read More →

Sorghum IPM Meeting – July 9

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Date: Tuesday, July 9 Time: 9 am Location: Sorghum Field near Port Lavaca on Gin Road, Just north of FM 2433 Topics: Crop development, Midge, Headworms, Stink Bugs and Sugarcane Aphids will be discussed CEUs: 1 hour CEU will be provided.