Thread: gypsum
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Old 12-21-2001, 06:33 PM
Forever Green Lawn Forever Green Lawn is offline
LawnSite Senior Member
Join Date: Feb 2001
Location: NW Indiana
Posts: 276
Applying gypsum won't help those clay soils much. Gypsum is used quite often out west on clay soils that are sodium based (red clay) as they help add structure. Most of the clay soils in this area are calcium based and gypsum (calcium sulfate) just doesn't have the same effect. Lime doesn't either. To be sure of the type of clay you have, talk to your county extention agent or do a soil test. You mentioned aeration, which will help with compaction and thatch. Unless a soil test shows a lack of calcium or a ph problem, I would skip the gypsum and lime and go with the core areation. Good luck and Happy Holidays!!!
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