Stink Bugs in Cotton and Soybeans

While many fields are harvest ready, stink bugs are potential pests in the cotton and soybean fields that have yet to reach maturity. Cotton should be scouted for stink bugs until 350 heat units, or approximately 15 days, after the field has cutout (<5 NAWF).  Scout by opening 20-25 one-inch bolls and inspecting the bolls for evidence of internal feeding. Treat a field with more than 20% evidence of internal feeding. Soybeans are susceptible to stink bug damage until the beans reach maturity. Some entomologists would say soybeans… Read More →

Sugarcane Aphids Above Threshold in Sorghum

While some sorghum fields in the Mid-Coast of Texas have already been harvested, the remaining fields should be inspected for Sugarcane Aphids (SCA). This week I have seen an increasing number of fields with treatable levels of aphids. Scout fields by walking at least 15-20 rows into the field and looking for honeydew on the plants. Two scouting methods can be followed depending on the threshold you plan on using. Once SCA are found in a field, use one of the following protocols to assess the need for… Read More →

2018 South Texas Crop Tours

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Texas A&M AgriLife Extension Service will hold crop tours across South Texas in June.  Below are the dates of these tours. June 5  San Patricio County – 361-364-6234 June 6  Nueces County – 361-767-5223 June 11  Jackson County – 361-782-3312 June 12  DeWitt County – 361-275-0816 June 13  Refugio County – 361-526-4340 June 14  Calhoun County – 361-552-9747 June 18  Fayette County – 979-968-5831 June 19  Victoria County – 361-575-4581 June 21  Colorado County – 979-732-2082

Stink Bugs and Headworms in Grain Sorghum

Some sorghum fields across the Mid-Coast of Texas have been inundated with Rice Stink Bugs or Headworms; or in some cases, both stink bugs and headworms. Adding to this problem, I have received several reports of pyrethroid insecticides failing to control rice stink bugs. Scout sorghum using a 2-gallon bucket and beat heads into the bucket and see what is being captured in the bucket. Look here for a brief video. Economic thresholds for stink bugs and headworms depend on the cost of control, expected crop value, and… Read More →

Cotton Fleahopper Numbers on the Rise

Cotton fields range from pinhead square to early bloom. Most fields are susceptible to cotton fleahopper damage and the potential for bollworm losses. We are finding cotton fleahoppers in numbers as high as 1 per plant, averaging around 20-30 per 100 plants. Continue to scout for cotton fleahoppers through the first week of bloom. This pest may cause fruit shed of small pinhead squares. Squares larger than matchhead size are generally safe from fleahopper damage. Once the plant has reached bloom, 80-90% of the fruit that will be… Read More →