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Fletcher Wildlife Garden | all galleries >> Previous FWG blogs >> 2014 Blogs >> FWG Blog: June 2014 > Herbicide sign
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23-JUN-2014 Christine Hanrahan

Herbicide sign

Although the sign says that AAFC (Agriculture and Agri-Foods Canada) sprayed the site, what the sign does not say is that it was not AAFC that made the decision to spray, it was made by the committee overseeing the garden. It goes against our mandate to do this, but.... There is no doubt that dog-strangling vine (DSV) is a big problem at the garden, as everywhere in the Ottawa region. However, spraying a small section which is surrounded by millions of the DSV plant and which will release their seeds into the area for years if not decades to come, renders this 'test' useless. We know glyphosate, the chemical used, will kill DSV, we also know it will come back in force once the spraying stops.

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Guest 09-Jul-2014 14:06
My opposition to the spraying of glyphosate ( 'Roundup' in common parlance) at the FWG hinges partly on the belief that spraying a quarter acre which is surrounded by huge areas of DSV infested land will not be successful in controlling this pest even in the sprayed area in the long run. Yes, 3 years of repeated spraying will kill everything on the site sprayed including DSV. But unless the replanted area is tended like a garden with constant weeding or mowed like a lawn, the DSV will return and take over once again. Unmowed grasses certainly do not keep it out. Even the Backyard Garden which is the most intensively weeded area on the property is continually sprouting new DSV plants.
I dont know what the answer is. Hopefully biocontrol agents in the long term will control it. BUt this spraying approach is a useless experiment in my opinion. The use of a very powerful herbicide with potential problems for certain wildlife is unwarranted in this case.
Claudia
Martin Lamoon09-Jul-2014 09:55
Hope it does not affect the wildlife
v
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