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Old 11-21-2012, 08:07 AM
Smallaxe Smallaxe is offline
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Join Date: May 2007
Location: Central Wisconsin
Posts: 9,826
Actually both light and water are not listed... without those 2 elements, nothing happens except death...

One thing that is for sure in my area is that no cell elongation in the leaves have taken place in the past several weeks,,, so N hasn't been valuable in that area(how about the rest of the plant)...

I still say that the roots in a lawn could not use even a 1/4 pound of N/k during the past weeks, let alone applying it several weeks ago and not getting response until now...

I expect that cool season grasses are able to continue to extract nutrients from the soil well after the first frost, but I suspect there is a soil temperature cut-off point for doing so... In fact I wouldn't be surprised that the 2weeks of 'response time' + about 4 weeks of active growing that 1 pound/k of N gets used up during September and another 1/2 pound/k applied on Oct. 1st might also get used up, in spite of CenroWisco grinding to a halt...

Anyways, it would be nice if that Turf Association mentioned the soil temps and accessability to N... AND... what are the chances of the roots actively growing again once the ground freezes in the Fall even IF it thaws again for Indian Summer???
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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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