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Old 05-13-2012, 08:01 PM
NattyLawn NattyLawn is offline
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Join Date: Feb 2005
Location: Lancaster, PA
Posts: 1,648
When I used NPP there was no preventative rate, just curative. If you feel the need to apply a preventative, I would say go ahead. Follow that up with an organic fert app (NPP is not nice to biology) and don't fertilize in the summer, as the N will help fuel the disease.
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