{"id":218,"date":"2015-07-02T20:50:42","date_gmt":"2015-07-02T20:50:42","guid":{"rendered":"http:\/\/agrilife.org\/mid-coast-ipm\/?p=218"},"modified":"2015-07-21T15:58:07","modified_gmt":"2015-07-21T15:58:07","slug":"nozzle-selection-for-sugarcane-aphid-control","status":"publish","type":"post","link":"https:\/\/agrilife.org\/mid-coast-ipm\/nozzle-selection-for-sugarcane-aphid-control\/","title":{"rendered":"Nozzle Selection for Sugarcane Aphid Control"},"content":{"rendered":"

Proper application techniques for controlling sugarcane aphids is essential for obtaining adequate control of these insects.\u00a0 The labels for both Sivanto and Transform contain instructions on using plenty of water when treating sorghum fields.\u00a0 Both recommend using 10 gallons per acre or more.\"Canopy<\/a><\/p>\n

The reason for the higher application volumes is because this aphid tends to populate the lower canopy.\u00a0 Lower application volumes will get less canopy penetration, especially in narrow rows.<\/p>\n

Last week, I looked at coverage in the lower canopy using water sensitive paper.\u00a0 We place the papers on the upper surfaces of\u00a0 the leaf below the flag leaf and the lowest green leaf in the canopy underneath other leaves.\u00a0 We sprayed water in a typical application evaluating 6 spray tips and 1 or 2 application volumes per tip ranging from 7 to 19.5 gallons per acre.\u00a0 The tips included hollow cones and a variety of flat fan tips.<\/p>\n

On the top of the canopy the percent coverage ranged from 28-70% coverage.\u00a0 All of the leaves on top were covered sufficiently so as not to be of concern for controlling the aphids.\u00a0 However, in the lower canopy, the spray tips provided 2-5% leaf coverage.\u00a0<\/span> While no statistical differences were found between application tips, the applications with the lower spray volumes had lower percent coverage values.<\/p>\n

Nozzles producing coarse resulted in fewer droplets on the leaves than hollow cone spray tips but these droplets were larger in size.\u00a0 The larger droplets may be an advantage when excessive honey dew is on the leaf.<\/p>\n

These results demonstrate the need to make insecticide applications for aphid control at higher spray volumes.<\/span>\u00a0 Hollow cone nozzles are my preference, but flat fan nozzles at higher spray volumes should be as effective.<\/p>\n","protected":false},"excerpt":{"rendered":"

Proper application techniques for controlling sugarcane aphids is essential for obtaining adequate control of these insects.\u00a0 The labels for both Sivanto and Transform contain instructions on using plenty of water when treating sorghum fields.\u00a0 Both recommend using 10 gallons per acre or more. The reason for the higher application volumes is because this aphid tends to populate the lower canopy.\u00a0 Lower application volumes will get less canopy penetration, especially in narrow rows. Last week, I looked at coverage in the lower canopy using water sensitive paper.\u00a0 We place… Read More →<\/a><\/span><\/p>\n","protected":false},"author":1158,"featured_media":222,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[11],"tags":[31,6,7],"class_list":["post-218","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pest-management-news","tag-nozzle-selection","tag-sorghum","tag-sugarcane-aphid"],"acf":[],"yoast_head":"\nNozzle Selection for Sugarcane Aphid Control - 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\/nozzle-selection-for-sugarcane-aphid-control\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nozzle Selection for Sugarcane Aphid Control - Mid-Coast IPM\" \/>\n<meta property=\"og:description\" content=\"Proper application techniques for controlling sugarcane aphids is essential for obtaining adequate control of these insects.\u00a0 The labels for both Sivanto and Transform contain instructions on using plenty of water when treating sorghum fields.\u00a0 Both recommend using 10 gallons per acre or more. The reason for the higher application volumes is because this aphid tends to populate the lower canopy.\u00a0 Lower application volumes will get less canopy penetration, especially in narrow rows. Last week, I looked at coverage in the lower canopy using water sensitive paper.\u00a0 We place... 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