{"id":1134,"date":"2018-05-26T11:58:06","date_gmt":"2018-05-26T16:58:06","guid":{"rendered":"https:\/\/agrilife.org\/mid-coast-ipm\/?p=1134"},"modified":"2019-05-09T11:39:30","modified_gmt":"2019-05-09T16:39:30","slug":"stink-bugs-and-headworms-in-grain-sorghum","status":"publish","type":"post","link":"https:\/\/agrilife.org\/mid-coast-ipm\/stink-bugs-and-headworms-in-grain-sorghum\/","title":{"rendered":"Stink Bugs and Headworms in Grain Sorghum"},"content":{"rendered":"

\"\"<\/a>Some sorghum fields across the Mid-Coast of Texas have been inundated with Rice Stink Bugs <\/strong>or Headworms<\/strong>; 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.<\/p>\n

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.<\/a><\/p>\n

Economic thresholds for stink bugs and headworms depend on the cost of control, expected crop value, and sorghum heads per acre. Look here for an economic thresholds calculator<\/a>.<\/p>\n

I am using an economic threshold of 0.5 – 1 stink bug per head, depending on heads per acre.<\/p>\n

For an economic threshold for worms, divide them into medium larvae (1\/4 to 1\/2 inch) and large worms (>1\/2 inch). treat when the field averages \"\"<\/a>more than 1 medium worm per head or 1 large worm in 5 heads. Small worms under 1\/4 inch no not need to be considered as they feed very little and natural mortality is very high.<\/p>\n

For control of Rice Stink Bugs I typically recommend the pyrethroids. But with this week’s reports of local field failures, I suggest using Dimethoate, Stallion or Cobalt Advanced.<\/p>\n

Suggested insecticides for corn earworms include Prevathon, Beseige, Lannate, Blackhawk, Stallion, Cobalt Advanced and pyrethroid insecticides.<\/p>\n

Following treatment for stink bugs and\/or headworms, watch for Sugarcane Aphid populations to increase. This may occur after and insecticide application reduces the beneficial insect numbers.<\/p>\n","protected":false},"excerpt":{"rendered":"

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 →<\/a><\/span><\/p>\n","protected":false},"author":1158,"featured_media":158,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[11],"tags":[25,19,24,23,6],"class_list":["post-1134","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pest-management-news","tag-economic-threshold","tag-field-scouting","tag-headworm","tag-rice-stink-bug","tag-sorghum"],"acf":[],"yoast_head":"\nStink Bugs and Headworms in Grain Sorghum - Mid-Coast IPM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/agrilife.org\/mid-coast-ipm\/stink-bugs-and-headworms-in-grain-sorghum\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stink Bugs and Headworms in Grain Sorghum - Mid-Coast IPM\" \/>\n<meta property=\"og:description\" content=\"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... 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