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Old 05-06-2009, 09:32 AM
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upidstay upidstay is offline
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Join Date: Oct 2004
Location: CT
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Yes, a good aeration and power raking will shatter the chemical barrier created by the pre-emergent.

Heard from the manufacturer of Dimension and Pendimethalin that the chemical does in fact create a chemical barrier in the soil. There are no systemic properties.
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