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ammonium sulfate

2373 Views 3 Replies 4 Participants Last post by  Mowerman2112
I want to put on ammonium sulfate and then pre. later on. In Nebraska with clay lawns with a high PH, I thought adding A.S. first to break up the binding of the PH and then put down pre with a slow release fertalizer. How much time should I leave in between the apps. since A.S. is a fast release fert? My biggest problem is controlling foxtail and some crabgrass.

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