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  #11  
Old 10-02-2012, 07:45 AM
Smallaxe Smallaxe is offline
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Join Date: May 2007
Location: Central Wisconsin
Posts: 9,814
Quote:
Originally Posted by nmez21 View Post
Just a heads up that oftentimes P levels decrease significantly as you go deeper into the soil. See the attached graphic taken from a Wisconsin putting green. Courtesy Dr. Soldat UW-M. Most important thing is consistency of depth from sample to sample though and year to year to ensure results that are worth interpreting.

Was the lawn tested because it had a visual problem?
To me that may indicate that the applications put on top of the surface are still sitting there as P doesn't really move through the soil profile...

Is this interpretation of the raw data trying to say that P is typically more prevalent at the surface and declines a bit every inch down???
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Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage
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  #12  
Old 10-03-2012, 09:53 AM
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nmez21 nmez21 is offline
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Join Date: Sep 2005
Location: Wisconsin
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Quote:
Originally Posted by Smallaxe View Post
To me that may indicate that the applications put on top of the surface are still sitting there as P doesn't really move through the soil profile...

Is this interpretation of the raw data trying to say that P is typically more prevalent at the surface and declines a bit every inch down???
You're dead on
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  #13  
Old 10-31-2012, 08:45 PM
timturf timturf is offline
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Join Date: Jan 2003
Location: central virgina, transition, plant hardy zone 7a, and heat index zone 7
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Quote:
Originally Posted by nmez21 View Post
Just a heads up that oftentimes P levels decrease significantly as you go deeper into the soil. See the attached graphic taken from a Wisconsin putting green. Courtesy Dr. Soldat UW-M. Most important thing is consistency of depth from sample to sample though and year to year to ensure results that are worth interpreting.

Was the lawn tested because it had a visual problem?
What depth was sample taken?

Does the lab know what depth the sample was taken?

Needs ca, p2o5, sop

Quanities ? need more info
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Almost 40 yrs exp., 20 as GC superintendent
Primarly work with cool season turf
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