Tag Archives: Sugarcane aphid

Crop Scouting Field Meeting – June 20

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Monday, June 20,  8:30 a.m. Location: Calhoun County, Cotton field at corner of Hwy 87 and FM 2433. Topics: Scouting Cotton and Sorghum

Mid-Coast Grain Sorghum IPM Update

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Grain sorghum in the Mid-Coast of Texas ranges from Milk to hard dough.  Harvest is just around the corner for some fields.  This was noticeable by seeing combines and headers out of the barns getting ready for use. We are finding light numbers of stink bugs and headworms in fields across the mid-coast.  Continue to check fields weekly for these pests. One question asked of me this past week involved how to manage stink bugs or headworms in fields with light sugarcane aphids.  My suggestion is not to… Read More →

Mid-Coast Grain Sorghum Update

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Grain sorghum maturity ranges from boot to soft dough.  Some fields are turning color. We are finding varying populations of Sorghum Midge in fields ranging from 0-5 per head.  Treatment thresholds are 0.5-1 midge per head depending on the number of flowering heads per acre. We are finding headworms in Refugio County sorghum fields ranging from 0-4 per head.  Many of these are fall armyworms.  The economic threshold for headworms ranges from 0.15 to 1 large worm (> 0.5 inch) per head.  For medium worms (0.25-0.5 inch) the ET… Read More →

Mid-Coast Grain Sorghum Insect Management

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Fields of grain sorghum in Calhoun, Refugio and Victoria Counties range from 6-7 leaf to mid-late bloom.  The most important insects we are seeing are sorghum midge and aphids. Sorghum midge are only pests of grain sorghum during bloom.  The adult sorghum midge is a 1.3-mm-long, fragile-looking, orange-red fly, with a yellow head, brown antennae and legs, and gray membranous wings. (Source) During the single day of adult life, each female lays about 50 yellowish-white eggs between the glumes of flowering spikelets of sorghum.  Larvae complete development in… Read More →

Aphid Management in Sorghum

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Aphids are being found in many of the sorghum fields of the Coastal Bend of Texas.  Some sorghum fields are no longer protected by the insecticide seed treatments and several kinds of aphids are being found in these fields. Corn leaf aphids, yellow sugarcane aphids and sugarcane aphids are all being found in sorghum fields.  It is important to be able to distinguish between these aphids as their economic thresholds are different. The Corn Leaf Aphid is usually green, with dark cornicles (tail pipes) and dark legs.  Yellow… Read More →