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Old 02-03-2013, 06:00 PM
Smallaxe Smallaxe is offline
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Join Date: May 2007
Location: Central Wisconsin
Posts: 10,091
Actually it is the N being trapped at the surface that encourages roots to grow upward instead of down into the soil... that is why aeration is used to punch holes in the thatch and allow water and NPK to get down into the depths and feed the roots below the surface of the thatch layer...
There might be confusion as to the definition of thatch and dead grass clippings... check this out...

* "Thatch in lawns is often misunderstood; both its cause and control. Some lawns have serious thatch problems while others do not. Thatch is a layer of living and dead organic matter that occurs between the green matter and the soil surface. Excessive thatch (over 1/2 inch thick) creates a favorable environment for pests and disease, an unfavorable growing environment for grass roots, and can interfere with some lawn care practices. " *
Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage
,,, I wonder what does...
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