Dr. David J. Shetlar

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  www.golfdom.com/golfdom/article/articleDetail.jsp?id=62 - [Cached Version]
  Published on: 8/26/2009    Last Visited: 9/5/2009  

  Nobody in the golf course maintenance world - make that the world - can talk more eloquently about insect control than Dave Shetlar, professor of Urban Landscape Entomology at the Ohio State University and known as The BugDoc.
  ...
  "If you haven't had them," Shetlar said of the turfgrass ant, "then you're probably lying or applying way too many pesticides."
  
  The turfgrass ant is one of the most common inhabitants of turfgrass in the northeastern U.S., Shetlar said. The ants build mounds on greens and tees, which can kill shortly cut turf, interfere with play and dull mower blades. You can apply insecticides with short residual activity and kill foraging worker ants on the surface, but this would only stop mounding activity for a few weeks because the colony survives, Shetlar said. The key, he added, is to kill the queen, the colony and the brood (larvae).
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  Amazingly, the ants can go up to four months in the fall and winter living off the replete ants, Shetlar said. Hence, another insecticide is needed to control them, rather than one with a short residual activity.
  
  "We're beginning to adopt the same strategies the pest control industry has adopted [to control ants]," Shetlar says. "The pest control industry has always had this mantra -- if you're going to kill an ant colony, you have to kill the queen. We need to get an insecticide into the colony, get it the workers and then to the queen. What we're talking about is colony elimination, not ant activity elimination."
  
  Shetlar says recent control tests using neonicotinoid insecticides have shown significant reductions in mounding activity five to eight weeks after application, which suggests the insecticides are either reducing food sources or they're slowing action within the colony to kill the brood and or/queen, Shetlar said. A fall application appears to reduce colony activity significantly the following season, Shetlar said.
  
  "This is true colony elimination," Shetlar said. "You're not just fooling around with the workers on the surface."
  
  The BugDoc not only knows best. He knows how to tell it best.

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  www.ohio.com/lifestyle/home_garden/50635017.html - [Cached Version]
  Published on: 7/13/2009    Last Visited: 7/17/2009  

  The beetles like to lay their eggs in soil with the right amount of moisture, explained David J. Shetlar, an entomologist at Ohio State University in Columbus. In mid-July last year, the northern third of Ohio had heavy rain that made for ideal egg-laying conditions in some areas, followed a couple of weeks later with enough additional rain to keep the soil sufficiently moist for those eggs to develop, he said.
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  In a wet year, the beetles will lay their eggs on higher ground, where the soil drains better, Shetlar said. Conversely, they'll seek low ground in a dry year.
  
  The amount of organic matter that's available in the soil to feed their grub babies - the beetle larvae - also plays a deciding factor. Shetlar said beetles seek out healthy, well-fed lawns where grass roots and other organic matter are abundant for their grubs to feast on.
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  Typically only some of the lawns in a neighborhood are treated, and beetles born in your neighbors' untreated yards can easily fly to yours, Shetlar said.
  ...
  The beetles like to lay their eggs in soil with the right amount of moisture, explained David J. Shetlar, an entomologist at Ohio State University in Columbus. In mid-July last year, the northern third of Ohio had heavy rain that made for ideal egg-laying conditions in some areas, followed a couple of weeks later with enough additional rain to keep the soil sufficiently moist for those eggs to develop, he said.
  ...
  In a wet year, the beetles will lay their eggs on higher ground, where the soil drains better, Shetlar said. Conversely, they'll seek low ground in a dry year.
  
  The amount of organic matter that's available in the soil to feed their grub babies - the beetle larvae - also plays a deciding factor. Shetlar said beetles seek out healthy, well-fed lawns where grass roots and other organic matter are abundant for their grubs to feast on.
  ...
  Typically only some of the lawns in a neighborhood are treated, and beetles born in your neighbors' untreated yards can easily fly to yours, Shetlar said.

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  www.buckandsons.com/feed/rss/ - [Cached Version]
  Published on: 10/9/2008    Last Visited: 10/11/2008  

  Dave Shetlar, entomologist with The Ohio State University extension service has determined that Central Ohio is seeing higher than normal adult beetles flying about.

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  www.onla.org/pub_newsletters.html - [Cached Version]
  Published on: 1/27/2006    Last Visited: 3/7/2007  

  Subscribers receive 16 timely issues (from mid-March through mid-October),written by Dr. David Shetlar, Landscape Entomologist, The Ohio State University.

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  www.ohio.com/news/top_stories/19814364.html - [Cached Version]
  Published on: 6/12/2008    Last Visited: 6/12/2008  

  Carpenter bee numbers are up in Ohio from last year, when a great many were killed in an April freeze, said David Shetlar, an entomologist with Ohio State University Extension in Columbus.
  
  People typically encounter the nearsighted males, which are often aggressive in defending their territory.They are attracted by motion, like waving your arms at the insect, he said.
  
  The males, which cannot sting, often buzz and come close to you, but back off once they realize you are not another carpenter bee, he said.
  
  The insects get their name because they excavate wood and create galleries in wood as nest sites.And they are likely to return to that nesting site in subsequent years, he said.
  
  Dead red cedar trees are the preferred nesting site in Ohio for carpenter bees, Shetlar said.
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  Shetlar said generally the damage caused by two bees is slight, but it can grow over the years as the bees return to the same site.
  
  The female bees bore an entrance hole that is typically clean-cut, circular and less than a half-inch wide.The female bores in 1 to 2 inches and then makes a 90-degree turn and excavates along the wood grain for another 4 to 6 inches to create the gallery or tunnel.She excavates the gallery at the rate of 1 inch in six days, according to an Ohio State University Extension fact sheet.
  ...
  Carpenter bee numbers are up in Ohio from last year, when a great many were killed in an April freeze, said David Shetlar, an entomologist with Ohio State University Extension in Columbus.
  
  People typically encounter the nearsighted males, which are often aggressive in defending their territory.They are attracted by motion, like waving your arms at the insect, he said.
  
  The males, which cannot sting, often buzz and come close to you, but back off once they realize you are not another carpenter bee, he said.
  
  The insects get their name because they excavate wood and create galleries in wood as nest sites.And they are likely to return to that nesting site in subsequent years, he said.
  
  Dead red cedar trees are the preferred nesting site in Ohio for carpenter bees, Shetlar said.
  ...
  Shetlar said generally the damage caused by two bees is slight, but it can grow over the years as the bees return to the same site.
  
  The female bees bore an entrance hole that is typically clean-cut, circular and less than a half-inch wide.The female bores in 1 to 2 inches and then makes a 90-degree turn and excavates along the wood grain for another 4 to 6 inches to create the gallery or tunnel.She excavates the gallery at the rate of 1 inch in six days, according to an Ohio State University Extension fact sheet.

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  www.golfdom.com/golfdom/article/articleDetail.jsp?id=41 - [Cached Version]
  Published on: 4/4/2007    Last Visited: 4/5/2007  

  Dave Shetlar, a professor in Ohio State's Department of Entomology, spoke about recent insect control studies and new programs for 2007.Shetlar talked in-depth about some of the new insecticides coming out to battle grubs and other bugs.But he also noted that Milorganite can help in this area.
  
  Milorganite?
  
  Apparently, grub-infested turf treated with Milorganite , a natural fertilizer , deters skunks and raccoons from tearing up turf to get at grubs for their dinner.
  
  "They don't like the good old-fashioned smell of sewer," Shetlar says of the varmints.

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  www.landscapemanagement.net/landscape/Green+Industry+Ne - [Cached Version]
  Published on: 7/22/2009    Last Visited: 7/22/2009  

  Dr. Dave Shetlar, OSU Department of Entomology

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  www.bloomingarden.com/Enquirer%20Articles/09%20Articles - [Cached Version]
  Published on: 5/23/2009    Last Visited: 8/19/2009  

  A lot of this information was gathered from Gary Gao, an OSU Extension Agent who came up with the description Mulch Mania and volcano mulch and David Shetlar, the OSU Landscape Etomology specialist.
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  To quote David Shetlar, Mulching has become big business!

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  www.lawnandlandscape.com/store-public/productdetail.asp - [Cached Version]
  Published on: 3/21/2007    Last Visited: 3/21/2007  

  Destructive Turf Insects, 2nd Edition, by Harry D. Niemczyk, Ph.D. and David J. Shetlar, Ph.D., is the revised, definitive, practical guide to destructive turf insects for turfgrass owners, sports field managers, lawn service operators, golf course superintendents, students and others involved with turfgrass management.
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  Turf & Ornamental Insect Identification Series: Volume I: The Grubs - sponsored by Bayer Corporation Garden & Professional Care, is a state-of-the-art training tool featuring technical content by industry researcher Dr. David Shetlar, The Ohio State University, and original, full-color images of 8 commonly encountered grub species.

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  www.turfnet.com/view_news.php?obj_id=135 - [Cached Version]
  Last Visited: 6/4/2008  

  The event included research updates by Clemson University turfgrass pathologist Bruce Martin, Ph.D., and Ohio State University entomologist David Shetlar, Ph.D., followed by product presentations by Valent personnel.

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