Posts tagged ‘honeybee colony collapse disorder’

Study: Pesticides Not Cause of Honey Bee Problems

An international team of scientists published a paper studying the possible causes of Colony Collapse Disorder (CCD) which as affected managed honey bee colonies in the U.S. The study was published on PLoS ONE, a journal published by the Public Library of Science. The article is available at: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0006481#top

The study compared the risk factors between hive populations afflicted by and not afflicted by CCD. The sutdy found that bees in CCD colonies had higher pathogen levels than control populations. The affected hives were also co-infected with a greater number of pathogens. The researchers suggest that an increased exposure to pathogens or a reduced resistance of bees toward pathogens could be a cause. The researchers, led by the Pennsylvania state apiarist Dennis vanEnglesdorp, suggest that CCD involved an interaction between pathogens and other stress factors.

Source: EPA Office of Pesticide Programs

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September 16, 2009 at 1:05 pm 2 comments

Soybean Insecticides: Scout First

Ron Hammond, Ohio State University Extension Entomologist, and John Obermeyer and Larry Bledsoe, Purdue University Extension Entomologists, have a shared voice when it comes to insecticide applications in soybeans: “Scout first and resist the urge to ‘clean up’ insects in your soybean fields.”

Dr. Hammond articulates this point well, discussing the potential effect of unjustified insecticide applications on honeybees. Specifically, he discusses the impact on bees:

Although soybean aphids remain at low levels in Ohio, we are aware that many growers are adding insecticides to tanks when spraying fungicides and even late applications of herbicides [without regard for insect thresholds]. We do NOT recommend an insecticide application UNLESS there is a real need. Remember that numerous insecticides have a caution statement on their label about spraying around bees and blooming crops. The typical statement is: “This product is highly toxic to bees exposed to direct treatment or residues on blooming crops or weeds.”

Listen to my full podcast about this subject here:

August 6, 2008 at 7:00 am


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