{"id":231,"date":"2015-06-23T15:50:50","date_gmt":"2015-06-23T19:50:50","guid":{"rendered":"http:\/\/site.extension.uga.edu\/tattnall\/?p=231"},"modified":"2017-08-10T14:10:50","modified_gmt":"2017-08-10T18:10:50","slug":"bermudagrass-stem-maggot-damage-showing-up","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/tattnall\/2015\/06\/bermudagrass-stem-maggot-damage-showing-up\/","title":{"rendered":"Stem Maggot Damage Update"},"content":{"rendered":"

Yes, stem maggot damage is very bad again this year on bermudagrass.\u00a0 And no, we haven’t found any new products to control it.<\/p>\n

Dr. Will Hudson is the UGA Entomologist who has been doing research on stem maggot.\u00a0 Here’s his latest update:<\/p>\n

“The fall armyworm situation is much less severe this summer, but the stem maggot (BSM) is building in numbers in most of the southern 2\/3 of the state.\u00a0 We\u2019ve seen this pattern before, and our standard recommendation is that hay producers everywhere in the state should be watching closely as they begin the July cutting for signs of BSM activity.\u00a0 If there is damage in July, you can count on more in the August crop and a treatment may be warranted.\u00a0 Continuing research with insecticide control of BSM has shown that spraying a pyrethroid (active ingredients that end in \u2013thrin, like cypermethrin, cyfluthrin, etc) 7-10 days after cutting will reduce damage in the next crop.\u00a0 Under good growing conditions and light to moderate pressure from the flies, one application may be enough.\u00a0 Heavy pressure or poor growing conditions that slow the grass down may require a second application 7-10 days after the first.\u00a0<\/em><\/p>\n

At this point, we have no research results that show efficacy for any other insecticide active ingredients except the pyrethroids.\u00a0 Materials like Dimilin or those containing spinosad or chlorantraniliprole are good choices for armyworm control but do not appear to affect BSM.\u00a0 We have not found anything that provides residual control of the maggots, and nothing is more effective at killing the adult flies than the pyrethroids.\u00a0 For best results, slow down and apply as high a spray volume as your equipment and situation allow.<\/em> “<\/em><\/p>\n

 <\/p>\n

Here is a refresher on what stem maggot damage looks like :<\/p>\n

 <\/p>\n

\"Bermudagrass<\/a>
Bermudagrass Stem Maggot Damage<\/figcaption><\/figure>\n

Last week, I found some Bermudagrass Stem Maggot Damage in a Bermudagrass hay field.\u00a0 Luckily, it had already been cut and we saw the damage in a narrow strip where the cutter missed.\u00a0 You can see what the damage looks like in the picture above.\u00a0 The top 2 blades of grass on the stem turn completely brown.\u00a0 When you see this over a whole field, those brown blades at the top will give the grass a “frosted” appearance.\u00a0<\/span><\/p>\n

\"Here's<\/a>
Here’s another shot of the damage from Bermudagrass Stem Maggot.<\/figcaption><\/figure>\n

 <\/p>\n

\u00a0<\/span><\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Yes, stem maggot damage is very bad again this year on bermudagrass.\u00a0 And no, we haven’t found any new products to control it. Dr. Will Hudson is the UGA Entomologist who has been doing research on stem maggot.\u00a0 Here’s his latest update: “The fall armyworm situation is much less severe this summer, but the stem […]<\/p>\n","protected":false},"author":97,"featured_media":233,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/posts\/231","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/users\/97"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/comments?post=231"}],"version-history":[{"count":5,"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/posts\/231\/revisions"}],"predecessor-version":[{"id":615,"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/posts\/231\/revisions\/615"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/media\/233"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/media?parent=231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/categories?post=231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tattnall\/wp-json\/wp\/v2\/tags?post=231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}