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New beekeeper this season. Wondering if any experienced keepers had strong feelings about herbicides and bees. I have a recently discovered patch of poison ivy behind my hives. Any advice?

Thanks,

David
 

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Local feral survivors in eight frame medium boxes.
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I'm not fond of chemicals. There are lots of ways to kill weeds. Putting a sheet of black plastic on the ground is pretty effective as are scraps of plywood etc. But I have resorted to chemicals for the thistles on occasion. The Roundup I have usually regretted because it killed too much of the grass around the thistle.
 

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About Round-up,

I was asking myself the same question a few days ago about the inocuity of round-up with the bees. Monsanto (the company that sells Round-up) says that there is no toxicity with bees, at recommanded dosage, neither by direct contact or by the nectar: the product is rapidly absorbed by the plant's leaves.

Hope this helps...
 

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Local feral survivors in eight frame medium boxes.
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When I buy it, I just get the Ace Hardare or True Value Hardware brand. It will be a broadleaf killer that you can put on grass. Read the ingredients. It will be 2 (something) 4 (somthing) Dimethyl(somthing).
If you want their roundup equivilant (which kills everything that grows) it will be advertised to kill everything.
 

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There are a bunch of blends....I believe I read somewhere once that it is one of the first herbicides from just after WWII era. I believe it is component of most any broadleaf killer that you can pick up at the garden center or feed store.
 

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I researched glyphosate (the active ingredient in Roundup) quite extensively about 8 years ago when I put in my water garden. The source for the following was the old EXTOXNET which at that time was maintained by a number of universities including Cornell Mich State, Oregon State and U of CA, Davis.

I have made no attempt since then to search for more recent research, but I found no particular cause for concern at that time with fish or honeybees assuming proper use and application.

" Glyphosate is relatively non-toxic to honeybees. Its oral and dermal LD50 is greater than 0.1 mg/ bee (7)."

(7) The Agrochemicals handbook. 1991. The Royal Society of Chemistry, Cambridge, England.


Hope this helps.

Bill
 
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