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Old 01/18/2016, 08:49 PM   #2710
bertoni
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Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 85,847
Tree stump remover often (maybe always) contains potassium nitrate. I'm not sure what good it would do in a system in that condition, which already has a lot of fixed nitrogen available.


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Jonathan Bertoni
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